NOTICEWhen handling supplemental restraint system components (removal,installation or inspection, etc.), always follow the direction given in the repairmanuals listed above to prevent accidents and supplemental restraintsystem malfunction.
FOREWORD
This wiring diagram manual has been prepared to provide
information on the electrical system of the 2004 COROLLA.
Applicable models: ZZE130 Series
For service specifications and repair procedures of the above
models other than those listed in this manual, refer to the
following manuals;
Manual Name Pub. No. 2004 COROLLA Repair Manual
Volume 1Volume 2
2004 COROLLA New Car FeaturesSupplement
RM1037U1RM1037U2
NCF249U
All information in this manual is based on the latest product
information at the time of publication. However, specifications
and procedures are subject to change without notice.
2003All rights reserved. This book may not bereproduced or copied, in whole or in part, withoutthe written permission of Toyota MotorCorporation.
2004 COROLLA (EWD533U)
1
2004 COROLLAELECTRICAL WIRING DIAGRAM
Section Code Page
INTRODUCTION A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
HOW TO USE THIS MANUAL B. . . . . . . . . . . . . . . . . . 3
TROUBLESHOOTING C. . . . . . . . . . . . . . . . . . . . . . . . . 12
ABBREVIATIONS D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
GLOSSARY OF TERMS AND SYMBOLS E. . . . . . . . 18
RELAY LOCATIONS F. . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ELECTRICAL WIRING ROUTING G. . . . . . . . . . . . . . . 32
SYSTEM CIRCUITS H. . . . . . . . . . . . . . . . . . . . . . . . . . . 47
GROUND POINT I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
POWER SOURCE (Current Flow Chart) J. . . . . . . . . 198
CONNECTOR LIST K. . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
PART NUMBER OF CONNECTORS L. . . . . . . . . . . . . 210
OVERALL ELECTRICAL WIRING DIAGRAM M. . . . . 214
2004 COROLLA (EWD533U)
2
A INTRODUCTION
This manual consists of the following 13 sections:
No. Section Description
AINDEX Index of the contents of this manual.
AINTRODUCTION Brief explanation of each section.
B HOW TO USE THISMANUAL Instructions on how to use this manual.
C TROUBLE–SHOOTING Describes the basic inspection procedures for electrical circuits.
D ABBREVIATIONS Defines the abbreviations used in this manual.
EGLOSSARY OFTERMS ANDSYMBOLS
Defines the symbols and functions of major parts.
F RELAY LOCATIONS Shows position of the Electronic Control Unit, Relays, Relay Block, etc.This section is closely related to the system circuit.
G ELECTRICALWIRING ROUTING
Describes position of Parts Connectors, Splice points, Ground points, etc.This section is closely related to the system circuit.
INDEX Index of the system circuits.
HSYSTEM CIRCUITS
Electrical circuits of each system are shown from the power supply through groundpoints. Wiring connections and their positions are shown and classified by codeaccording to the connection method. (Refer to the section, ”How to use this manual”).The ”System Outline” and ”Service Hints” useful for troubleshooting are also containedin this section.
I GROUND POINT Shows ground positions of all parts described in this manual.
J POWER SOURCE(Current Flow Chart) Describes power distribution from the power supply to various electrical loads.
K CONNECTOR LIST Describes the form of the connectors for the parts appeared in this book.This section is closely related to the system circuit.
L PART NUMBER OFCONNECTORS Indicates the part number of the connectors used in this manual.
MOVERALLELECTRICALWIRING DIAGRAM
Provides circuit diagrams showing the circuit connections.
2004 COROLLA (EWD533U)
3
HOW TO USE THIS MANUAL B
This manual provides information on the electrical circuits installed on vehicles bydividing them into a circuit for each system.
The actual wiring of each system circuit is shown from the point where the powersource is received from the battery as far as each ground point. (All circuitdiagrams are shown with the switches in the OFF position.)
When troubleshooting any problem, first understand the operation of the circuitwhere the problem was detected (see System Circuit section), the power sourcesupplying power to that circuit (see Power Source section), and the ground points(see Ground Point section). See the System Outline to understand the circuitoperation.
When the circuit operation is understood, begin troubleshooting of the problemcircuit to isolate the cause. Use Relay Location and Electrical Wiring Routingsections to find each part, junction block and wiring harness connectors, wiringharness and wiring harness connectors, splice points, and ground points of eachsystem circuit. Internal wiring for each junction block is also provided for betterunderstanding of connection within a junction block.Wiring related to each system is indicated in each system circuit by arrows(from__, to__). When overall connections are required, see the Overall ElectricalWiring Diagram at the end of this manual.
[A]
[B]
[H]
[D]
[F]
[E]
[ I ]
[L]
[M]
[J]
[K]
[G][C]
1
2
IB
IB
3
4
47
2 1 11
13
4
1
2
6
3
1
2
B18
BL
R LG
R
B18G R
3
4
Rea
r C
ombi
natio
n Li
ght R
HR
7
Rea
r C
ombi
natio
n Li
ght L
HR
6
High MountedStop Light
H17
Light Failure Sensor
Stop Light SW
ABS ECU
S 6
CombinationMeter
C 7
BV11 W B
(Shielded)
BV11
I 5G W
IB2
IB1
IE114
BO
50
8L 4
15ASTOP
7.5AGAUGE
From Power Source System (See Page 66)
Stop Light
GR
WB
WB
WB
WB
GB
YG
RL
R
GR
WR
GW
WB
GW
W/G
)
( S/D
)L
L
( ( S/D
)
Sto
p
Sto
p
Rea
r Li
ghts
2004 COROLLA (EWD533U)
4
B HOW TO USE THIS MANUAL
∗ The system shown here is an EXAMPLE ONLY. It is different to the actualcircuit shown in the SYSTEM CIRCUITS SECTION.
2004 COROLLA (EWD533U)
5
B
[A] : System Title
[B] : Indicates a Relay Block. No shading is used andonly the Relay Block No. is shown to distinguish itfrom the J/BExample: Indicates Relay Block No.1
[C] : ( ) is used to indicate different wiring andconnector, etc. when the vehicle model, enginetype, or specification is different.
[D] : Indicates related system.
[E] : Indicates the wiring harness and wiring harnessconnector. The wiring harness with male terminal isshown with arrows ( ).Outside numerals are pin numbers.
Female Male ( )
The first letter of the code for each wiring harnessand wiring harness connector(s) indicates thecomponent’s location, e.g, ”E” for the EngineCompartment, ”I” for the Instrument Panel andSurrounding area, and ”B” for the Body andSurrounding area.
When more than one code has the first and secondletters in common, followed by numbers (e.g, IH1,IH2), this indicates the same type of wiring harnessand wiring harness connector.
[F] : Represents a part (all parts are shown in sky blue).The code is the same as the code used in partsposition.
[G] : Junction Block (The number in the circle is the J/BNo. and the connector code is shown beside it).Junction Blocks are shaded to clearly separatethem from other parts.
3C indicates thatit is insideJunction BlockNo.3
Example:
[H] : Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
B = Black W = White BR = Brown
L = Blue V = Violet SB = Sky Blue
R = Red G = Green LG = Light Green
P = Pink Y = Yellow GR = Gray
O = Orange
The first letter indicates the basic wire color and thesecond letter indicates the color of the stripe.
Example: L – Y
L(Blue)
Y(Yellow)
[I] : Indicates a wiring Splice Point (Codes are ”E” for theEngine Room, ”I” for the Instrument Panel, and ”B”for the Body).
The Location of splice Point I 5 is indicated by theshaded section.
[J] : Indicates a shielded cable.
[K] : Indicates the pin number of the connector.The numbering system is different for female andmale connectors.
Example: Numbered in orderfrom upper left tolower right
Numbered in orderfrom upper right tolower left
Female Male
[L] : Indicates a ground point.
The first letter of the code for each ground point(s)indicates the component’s location, e.g, ”E” for theEngine Compartment, ”I” for the Instrument Paneland Surrounding area, and ”B” for the Body andSurrounding area.
[M] : Page No.
[N]
[O]
[P]
[Q]
[R]
[S]
[T]
[U]
2004 COROLLA (EWD533U)
6
B HOW TO USE THIS MANUAL
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flowsthrough the rear lights warning light to TERMINAL 4 of the light failure sensor.
Stop Light Disconnection WarningWhen the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the currentflowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects thedisconnection and the warning circuit of the light failure sensor is activated.As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lightswarning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warningcircuit on and holds the warning light on until the ignition SW is turned off.
S6 Stop Light SW2–1 : Closed with the brake pedal depressed
L4 Light Failure Sensor1, 2, 7–Ground : Approx. 12 volts with the stop light SW on
4, 8–Ground : Approx. 12 volts with the ignition SW at ON position11–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
C7 34 L4 36 R7 37
H17 36 R6 37 S6 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 18 R/B No.1 (Instrument Panel Brace LH)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IB 20 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3C 22 Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IE1 42 Floor Wire and Instrument Panel Wire (Left Kick Panel)
BV1 50 Luggage Room Wire and Floor Wire (Luggage Room Left)
: Ground Points
Code See Page Ground Points Location
BL 50 Under the Left Center Pillar
BO 50 Back Panel Center
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I5 44 Cowl Wire B18 50 Luggage Room Wire
System Outline
Service Hints
2004 COROLLA (EWD533U)
7
B
[N] : Explains the system outline.
[O] : Indicates values or explains the function for reference during troubleshooting.
[P] : Indicates the reference page showing the position on the vehicle of the parts in the system circuit.
Example : Part ”L4” (Light Failure Sensor) is on page 36 of the manual.∗ The letter in the code is from the first letter of the part, and the number indicates its order in parts
starting with that letter.Example : L 4 Á
ÁParts is 4th in orderLight Failure Sensor
[Q] : Indicates the reference page showing the position on the vehicle of Relay Block Connectors in the system circuit.
Example : Connector ”1” is described on page 18 of this manual and is installed on the left side of the instrumentpanel.
[R] : Indicates the reference page showing the position on the vehicle of J/B and Wire Harness in the system circuit.
Example : Connector ”3C” connects the Instrument Panel Wire and J/B No.3. It is described on page 22 of thismanual, and is installed on the instrument panel left side.
[S] : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiringharness is shown first, followed by the male wiring harness).
Example : Connector ”IE1” connects the floor wire (female) and Instrument panel wire (male). It is described onpage 42 of this manual, and is installed on the left side kick panel.
[T] : Indicates the reference page showing the position of the ground points on the vehicle.
Example : Ground point ”BO” is described on page 50 of this manual and is installed on the back panel center.
[U] : Indicates the reference page showing the position of the splice points on the vehicle.
Example : Splice point ”I5” is on the Cowl Wire Harness and is described on page 44 of this manual.
2004 COROLLA (EWD533U)
8
B HOW TO USE THIS MANUAL
The ground points circuit diagram shows the connections from all major parts to the respective ground points. Whentroubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identifythe problem ground quickly. The relationship between ground points ( EA , IB and IC shown below) can also bechecked this way.
5
5
5
5
4
4
4
4
4BA15
IB18
EA2
ID115
IC33
IA12
E 3
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B W–B
W–B
W–B W–B
W–B
W–B W–B W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B W–B W–B
W–B
BR
W–B
BR BR
W–B
W–BW–B
W–B
W–B
W–B
W–BW–B W–B
W–B
W–B
W–B
W–B
W–B
BR
W–B
BRBR
BR
W–B (4A–GZE)
W–BW–B
I 2
I 2
B 5I 5
I 5
I 5
B 5
B 5
B 5
I 5
I 5
I 3I 3
E 3
E 3
E 3
E 2
E 4
E 5
E 4
E 5
E 6E 4
E 4
B 4
EA
I 4
B 4
B 4
I 4 I 8
IB IC
4
4
3E5
3E6
3G13
3F3
3D1
3B7
W–B
W–B
W–BW–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
I 6
I 6
I 23C7
10
A
A
A
A
A
A
JunctionConnector
J 1
W–B
W–B
W–B
W–B
BR
W–B
W–B
W–B
W–B
W–B
W–B
I GROUND POINT
FAN MAIN Relay
FAN MAIN Relay
A/C Relay No.2
A/C Relay No.3
Radiator Fan Motor
Headlight Cleaner Relay
Headlight LH
Headlight RH
Front Fog Light LH
Brake Fluid Level SW
Front Fog Light RHFront Turn Signal Light RH
Front Clearance Light RH
Front Turn Signal Light LH
Front Clearance Light LH
Door Lock Control SW
Door Courtesy SW RH
Door Lock Motor RH
Door Lock Control Relay
Blower Resistor
Idle–Up SW
A/C Amplifier
Radio and Player
HEATER Relay
Auto Antenna Motor
A/C Control Assembly
Blower Motor
Blower SW
Parking Brake SW
Combination Meter
Combination SW
Cruise Control ECU
Remote Control Mirror SW
Turn Signal Flasher
Defogger SW
Unlock Warning SW
Power Window Master SW
Power Window ControlRelay
Door Courtesy SW LH
Door Lock Control SW
Door Lock Motor LH
Fuel Control SW
Woofer Speaker Amplifier
Combination Meter
Combination Meter
Fuel Sender
Cigarette Lighter
O/D Main SW
Clock
Combination SW
∗ The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
2004 COROLLA (EWD533U)
9
B
The ”Current Flow Chart” section, describes which parts each power source (fuses, fusible links, and circuit breakers)transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each systemare explained. Since all System Circuit diagrams start from the power source, the power source system must be fullyunderstood.
AC
C
S 2
6
6 5
2
2
2
Battery 30A AM2
Starter
Short Pin
100A ALT
Fusible Link Block
60A ABS
10A ECU–B
7.5A DOME
15A EFI
10A HAZARD
20A RADIO NO.1
10A HORN
20A
10A
Fuse Page
214230112122
194187180166210
ABS
Cigarette LighterCombination Meter
Key Reminder and Seat Belt WarningLight Auto Turn OffTheft Deterrent and Door Lock Control
ABS and Traction ControlCruise ControlElectronically Controlled TransmissionMultiplex Communication System
STOP
System
DOMEHeadlightInterior Light
3 EA2 1 EA1
E 6
E 7
E 7
2
2
22
2
2
2
2
INJECTION Relay
STARTER Relay
B
B
B
B–O 1
1
2
2
3
4
3
4
W–B
W–B
B–W
B–W
E 7
E 7
B
B
W 1.25B FL MAIN
50A MAIN
7.5A AM2
15A HAZ–RADIO
2
2
2
2
2
W
W
EB1
EB1
7
6W–R
I 2 I 2
I 2
W W
W
W
W
1
1
1
1
40A DOOR LOCK CB
7.5A DOME
1 W–L
R
1
1
2
4 3
1
11
1
1 1
1
G
G
W–R
15A TAIL
20A DEFOGB–Y
8 4
3 2
Ignition SWI 8
B–Y1 1
P–L
Battery
15A RAD CIG
2
TAILRelay
Power Source
J POWER SOURCE (Current Flow Chart)
Engine Room R/B (See Page 20)
2
WW
BB
BB
B
W–R
WW
W
G–WA
M2
AM
1
IG2
IG1
W
W
The chart below shows the route by which current flows from the battery to each electrical source(Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.
∗ The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
Black
[D]
K CONNECTOR LIST
J4 K1 K2 L1
L2 L3 L4 M1 M2 M3
M4 N1 N2 O1 O2
Dark Gray
Gray
Dark GrayBlackGrayGray
A B BA A B C C C
D DD D
AA
AA
AAA A 1
1 2 1 2
1 12 1
2
1 2 36 7 8 9 101112
4 5
71 23 45 6 8
4321
1 2 3 2 3 48 9 105 6
17
1 2 1 1
[A]
[C]
[B]J3
1 2 1 2
6 7 8
1 2A
A
A
AA AA B BA A B C C C
D DD D
I14 I15 I16 J1 J2Dark Gray Gray Black
2004 COROLLA (EWD533U)
10
B HOW TO USE THIS MANUAL
[A] : Indicates connector to be connected to a part. (The numeral indicates the pin No.)
[B] : Junction ConnectorIndicates a connector which is connected to a short terminal.
Junction Connector
Short TerminalSame Color
Junction connector in this manual include a short terminal which isconnected to a number of wire harnesses. Always performinspection with the short terminal installed. (When installing thewire harnesses, the harnesses can be connected to any positionwithin the short terminal grouping. Accordingly, in other vehicles,the same position in the short terminal may be connected to a wireharness from a different part.)Wire harness sharing the same short terminal grouping have thesame color.
[C] : Parts CodeThe first letter of the code is taken from the first letter of part, and the numbers indicates its order in parts whichstart with the same letter.
[D] : Connector ColorConnectors not indicated are milky white in color.
A 1
L PART NUMBER OF CONNECTORS
A/C Ambient Temp. Sensor
Code
90980–11070
Part Number
D 4 Diode (Courtesy)
Code
90980–11608
A 2 A/C Condenser Fan Motor 90980–11237 D 5 Diode (Interior Light) 90980–10962
A 3 A/C Condenser Fan Relay 90980–10940 D 6 Diode (Moon Roof) 90980–11608
A 4 A/C Condenser Fan Resistor 90980–10928
90980–11271
D 7 Door Lock Control Relay 90980–10848
A 5 A/C Magnetic Clutch
90980–11413
D 8 Door Lock Control SW LH90980–11148
A 6 A/T Oil Temp. Sensor
90980–11151
D 9 Door Lock Control SW RH
A 7 ABS Actuator
90980–11009
Door Courtesy SW LH90980–11097
A 8 ABS Actuator
90980–10941
Door Courtesy SW RH
A 9 ABS Speed Sensor Front LH
90980–11002
Door Courtesy SW Front LH
ABS Speed Sensor Front RH
90980–11856
Door Courtesy SW Front RH90980–11156
Airbag Sensor Front LH Door Courtesy SW Rear LH
Airbag Sensor Front RH Door Courtesy SW Rear RH
A10
A11
A12
A13 Airbag Squib 90980–11194 Door Key Lock and Unlock SW LH90980–11170
90980–11070
D10
D11
D12
D13
D14
D15
D16
D17 Door Key Lock and Unlock SW RH
Part NumberPart NamePart Name
[A] [B] [C]
2004 COROLLA (EWD533U)
11
B
[A] : Part Code
[B] : Part Name
[C] : Part NumberToyota Part Number are indicated.
Not all of the above part numbers of the connector are established for the supply.
To Ignition SWIG Terminal
Fuse
VoltmeterSW 1
Relay
SW 2 Solenoid
[A]
[B]
[C]
Ohmmeter
SW
Ohmmeter
Diode
Digital Type Analog Type
2004 COROLLA (EWD533U)
12
C TROUBLESHOOTING
VOLTAGE CHECK
(a) Establish conditions in which voltage is present at the checkpoint.Example:
[A] – Ignition SW on[B] – Ignition SW and SW 1 on[C] – Ignition SW, SW 1 and Relay on (SW 2 off)
(b) Using a voltmeter, connect the negative lead to a good groundpoint or negative battery terminal, and the positive lead to theconnector or component terminal.This check can be done with a test light instead of a voltmeter.
CONTINUITY AND RESISTANCE CHECK
(a) Disconnect the battery terminal or wire so there is no voltagebetween the check points.
(b) Contact the two leads of an ohmmeter to each of the checkpoints.
If the circuit has diodes, reverse the two leads and checkagain.When contacting the negative lead to the diode positive sideand the positive lead to the negative side, there should becontinuity.When contacting the two leads in reverse, there should be nocontinuity.
(c) Use a volt/ohmmeter with high impedance (10 kΩ/Vminimum) for troubleshooting of the electrical circuit.
To Ignition SWIG Terminal
Test Light
RelayLight
SW 2 Solenoid
Disconnect
Short [A]
DisconnectDisconnect
SW 1
Fuse Case
Short [B]
Short [C]
Pull Up
Press Down Press Down
Pull Up
2004 COROLLA (EWD533U)
13
C
FINDING A SHORT CIRCUIT
(a) Remove the blown fuse and disconnect all loads of the fuse.(b) Connect a test light in place of the fuse.(c) Establish conditions in which the test light comes on.
Example:[A] – Ignition SW on[B] – Ignition SW and SW 1 on[C] – Ignition SW, SW 1 and Relay on (Connect the
Relay) and SW 2 off (or Disconnect SW 2)
(d) Disconnect and reconnect the connectors while watching thetest light.The short lies between the connector where the test lightstays lit and the connector where the light goes out.
(e) Find the exact location of the short by lightly shaking theproblem wire along the body.
CAUTION:(a) Do not open the cover or the case of the ECU unless
absolutely necessary. (If the IC terminals are touched,the IC may be destroyed by static electricity.)
(b) When replacing the internal mechanism (ECU part) ofthe digital meter, be careful that no part of your body orclothing comes in contact with the terminals of leadsfrom the IC, etc. of the replacement part (spare part).
DISCONNECTION OF MALE AND FEMALECONNECTORS
To pull apart the connectors, pull on the connector itself, notthe wire harness.
HINT : Check to see what kind of connector you aredisconnecting before pulling apart.
10
3
0.21
1
(mm)
Reference:
ToolUpExample:(Case 1)
Terminal Retainer
Terminal Retainer
[Retainer at Full Lock Position]
[Retainer at Temporary Lock Position]
StopperTerminalRetainer
SecondaryLocking Device
Example:(Case 2)
2004 COROLLA (EWD533U)
14
C TROUBLESHOOTING
HOW TO REPLACE TERMINAL(with terminal retainer or secondary locking device)
1. PREPARE THE SPECIAL TOOL
HINT : To remove the terminal from the connector, pleaseconstruct and use the special tool or like object shown onthe left.
2. DISCONNECT CONNECTOR
3. DISENGAGE THE SECONDARY LOCKING DEVICE OR
TERMINAL RETAINER.
(a) Locking device must be disengaged before the terminallocking clip can be released and the terminal removed fromthe connector.
(b) Use a special tool or the terminal pick to unlock the secondarylocking device or terminal retainer.
NOTICE:Do not remove the terminal retainer from connector body.
[A] For Non–Waterproof Type Connector
HINT : The needle insertion position varies according to the
connector’s shape (number of terminals etc.), so
check the position before inserting it.
”Case 1”
Raise the terminal retainer up to the temporary lock
position.
”Case 2”
Open the secondary locking device.
ToolTab
Tab
TerminalRetainer
Access Hole( Mark)
Tool
Tool
[Female]
Example:
[Male]
(Case 1)
[Male] [Female]
Retainerat Full Lock Position
Retainerat Temporary Lock Position
Terminal Retainer
[Male] Press Down [Female]Press Down
ToolTool
Example:(Case 2)
2004 COROLLA (EWD533U)
15
C
[B] For Waterproof Type Connector
HINT : Terminal retainer color is differentaccording to connector body.
Example:Terminal Retainer : Connector BodyBlack or White : GrayBlack or White : Dark GrayGray or White : Black
”Case 1”Type where terminal retainer is pulledup to the temporary lock position (PullType).
Insert the special tool into the terminalretainer access hole (Mark) and pullthe terminal retainer up to thetemporary lock position.
HINT : The needle insertion position variesaccording to the connector’s shape(Number of terminals etc.), so checkthe position before inserting it.
”Case 2”Type which cannot be pulled as far asPower Lock insert the tool straight intothe access hole of terminal retainer asshown.
Retainer atFull Lock Position
[Male] [Female]
Retainer atTemporary Lock Position
Locking Lug
Tool
2004 COROLLA (EWD533U)
16
C TROUBLESHOOTING
Push the terminal retainer down to the temporary lock position.
(c) Release the locking lug from terminal and pull the terminal outfrom rear.
4. INSTALL TERMINAL TO CONNECTOR
(a) Insert the terminal.HINT:1. Make sure the terminal is positioned correctly.2. Insert the terminal until the locking lug locks firmly.3. Insert the terminal with terminal retainer in the temporary lock
position.
(b) Push the secondary locking device or terminal retainer in tothe full lock position.
5. CONNECT CONNECTOR
∗ The titles given inside the components are the names of the terminals (terminal codes) and are not treated as beingabbreviations.
2004 COROLLA (EWD533U)
17
ABBREVIATIONS D
ABBREVIATIONS
The following abbreviations are used in this manual.
A/C = Air Conditioning
A/T = Automatic Transaxle
ABS = Anti–Lock Brake System
ECU = Electronic Control Unit
ESA = Electronic Spark Advance
EVAP = Evaporative Emission
IAC = Idle Air Control
IC = Integrated Circuit
J/B = Junction Block
LED = Light Emitting Diode
LH = Left–Hand
M/T = Manual Transaxle
O/D = Overdrive
R/B = Relay Block
RH = Right–Hand
SFI = Sequential Multiport Fuel Injection
SRS = Supplemental Restraint System
SW = Switch
TEMP. = Temperature
TVIP = TOYOTA Vehicle Intrusion Protection
VSV = Vacuum Switching Valve
VVT = Variable Valve Timing
w/ = With
w/o = Without
2004 COROLLA (EWD533U)
18
E GLOSSARY OF TERMS AND SYMBOLS
BATTERYStores chemical energy andconverts it into electrical energy.Provides DC current for the auto’svarious electrical circuits.
GROUNDThe point at which wiring attaches tothe Body, thereby providing a returnpath for an electrical circuit; without aground, current cannot flow.
CAPACITOR (Condenser)A small holding unit for temporarystorage of electrical voltage.
HEADLIGHTSCurrent flow causes a headlightfilament to heat up and emit light. Aheadlight may have either a single(1) filament or a double (2) filament
1. SINGLE FILAMENT
CIGARETTE LIGHTERAn electric resistance heatingelement.
2. DOUBLE FILAMENT
CIRCUIT BREAKERBasically a reusable fuse, a circuitbreaker will heat and open if toomuch current flows through it.Some units automatically reset whencool, others must be manually reset.
HORNAn electric device which sounds aloud audible signal.
DIODEA semiconductor which allowscurrent flow in only one direction.
IGNITION COILConverts low–voltage DC currentinto high–voltage ignition current forfiring the spark plugs.
DIODE, ZENERA diode which allows current flow in onedirection but blocks reverse flow only upto a specific voltage. Above that potential,it passes the excess voltage. This acts asa simple voltage regulator.
LIGHTCurrent flow through a filamentcauses the filament to heat up andemit light.
PHOTODIODEThe photodiode is a semiconductorwhich controls the current flowaccording to the amount of light.
LED (LIGHT EMITTING DIODE)Upon current flow, these diodes emitlight without producing the heat of acomparable light.
DISTRIBUTOR, IIAChannels high–voltage current fromthe ignition coil to the individualspark plugs.
METER, ANALOGCurrent flow activates a magneticcoil which causes a needle to move,thereby providing a relative displayagainst a background calibration.
FUSEA thin metal strip which burns throughwhen too much current flows through it,thereby stopping current flow andprotecting a circuit from damage.
FUSIBLE LINK
METER, DIGITALCurrent flow activates one or manyLED’s, LCD’s, or fluorescentdisplays, which provide a relative ordigital display.
FUEL
FUSIBLE LINKA heavy–gauge wire placed in highamperage circuits which burns through onoverloads, thereby protecting the circuit.The numbers indicate the crosssectionsurface area of the wires.
(for Medium Current Fuse)
(for High Current Fuse or Fusible Link)
MOTORA power unit which convertselectrical energy into mechanicalenergy, especially rotary motion.
M
2004 COROLLA (EWD533U)
19
E
RELAYBasically, an electrically operatedswitch which may be normallyclosed (1) or open (2).Current flow through a small coilcreates a magnetic field which eitheropens or closes an attached switch.
1. NORMALLY CLOSED
2. NORMALLY OPEN
SWITCH, MANUALOpens and closesi it th b
SPEAKERAn electromechanical device whichcreates sound waves from currentflow.
RELAY, DOUBLE THROWA relay which passes currentthrough one set of contacts or theother.
circuits, therebystopping (1) orallowing (2) currentflow.
1. NORMALLY OPEN
2. NORMALLY CLOSED
RESISTORAn electrical component with a fixedresistance, placed in a circuit toreduce voltage to a specific value.
SWITCH, DOUBLE THROWA switch which continuously passescurrent through one set of contactsor the other.
RESISTOR, TAPPEDA resistor which supplies two ormore different non adjustableresistance values.
SWITCH, IGNITIONA key operated switch with severalpositions which allows variouscircuits, particularly the primaryignition circuit, to becomeoperational.
RESISTOR, VARIABLE or RHEOSTATA controllable resistor with a variablerate of resistance.Also called a potentiometer orrheostat.
SENSOR (Thermistor)A resistor which varies its resistancewith temperature.
SWITCH, WIPER PARKAutomatically returns wipers to thestop position when the wiper switchis turned off.
(Reed Switch Type)
SENSOR, SPEEDUses magnetic impulses to openand close a switch to create a signalfor activation of other components.
TRANSISTORA solidstate device typically used asan electronic relay; stops or passescurrent depending on the voltageapplied at ”base”.
SHORT PINUsed to provide an unbrokenconnection within a junction block.
WIRESWires are always drawn asstraight lines on wiringdiagrams.Crossed wires (1) without ablack dot at the junction are
t j i d
(1) NOT CONNECTED
SOLENOIDAn electromagnetic coil which formsa magnetic field when current flows,to move a plunger, etc.
jnot joined;crossed wires (2) with ablack dot or octagonal ( )mark at the junction arespliced (joined)connections.
(2) SPLICED
2004 COROLLA (EWD533U)
20
F RELAY LOCATIONS
[Engine Compartment]
[Body]
2004 COROLLA (EWD533U)
21
F
[Instrument Panel]
2004 COROLLA (EWD533U)
22
F RELAY LOCATIONS
1 : Engine Room R/BEngine Compartment Left (See Page 20): Engine Room J/B Engine Compar tment Left (See Page 20)
2004 COROLLA (EWD533U)
23
Memo
2004 COROLLA (EWD533U)
24
F RELAY LOCATIONS
: Instrument Panel J/B Lower Finish Panel (See Page 21)
2004 COROLLA (EWD533U)
25
F
2004 COROLLA (EWD533U)
26
F RELAY LOCATIONS
[Instrument Panel J/B Inner Circuit]
2004 COROLLA (EWD533U)
27
F
2004 COROLLA (EWD533U)
28
F RELAY LOCATIONS
3 : RH R/B Right Side of the Instrument Panel Reinforcement : RH J/B
Right Side of the Instrument Panel Reinforcement (See Page 21)
2004 COROLLA (EWD533U)
29
F
[RH J/B Inner Circuit]
2004 COROLLA (EWD533U)
30
F RELAY LOCATIONS
: Center J/B Behind the Combination Meter (See Page 21)
2004 COROLLA (EWD533U)
31
F
[Center J/B Inner Circuit]
2004 COROLLA (EWD533U)
32
G ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
A 1 A/C Magnetic ClutchA 2 A/T Shift Lever Position SW
Back–Up Light SWPark/Neutral Position SW
A 3 ABS Speed Sensor Front LHA 4 ABS Speed Sensor Front RHA 5 Airbag Sensor Front LHA 6 Airbag Sensor Front RHA 7 Ambient Temp. Sensor
B 1 Back–Up Light SWB 2 Brake Fluid Level Warning SW
C 1 Camshaft Position SensorC 2 Camshaft Timing Oil Control Valve (VVT)C 3 Crankshaft Position SensorC 4 Cruise Control Actuator
E 1 Electronically Controlled Transmission SolenoidE 2 Engine Coolant Temp. Sensor
F 1 Front Fog Light LHF 2 Front Fog Light RHF 3 Front Parking Light LH
Front Turn Signal Light LHF 4 Front Parking Light RH
Front Turn Signal Light RHF 5 Front Washer MotorF 6 Front Wiper Motor
G 1 GeneratorG 2 Generator
H 1 Headlight LH (High)H 2 Headlight LH (Low)H 3 Headlight RH (High)H 4 Headlight RH (Low)H 5 Heated Oxygen Sensor (Bank 1 Sensor 1)H 6 Horn
2004 COROLLA (EWD533U)
33
G
Position of Parts in Engine Compartment
I 1 Idle Air Control ValveI 2 Ignition Coil and Igniter No.1I 3 Ignition Coil and Igniter No.2I 4 Ignition Coil and Igniter No.3I 5 Ignition Coil and Igniter No.4I 6 Injector No.1I 7 Injector No.2I 8 Injector No.3I 9 Injector No.4
J 1 Junction Connector
K 1 Knock Sensor
M 1 Mass Air Flow Meter
N 1 Noise Filter (Ignition)
O 1 Oil Pressure SW
P 1 Power Steering Oil Pressure SWP 2 Pressure SW
R 1 Radiator Fan MotorR 2 Radiator Fan Resistor
S 1 Skid Control ECU with ActuatorS 2 StarterS 3 Starter
T 1 Throttle Position Sensor
V 1 Vehicle Speed Sensor (Combination Meter)V 2 VSV (Canister Closed Valve)V 3 VSV (EVAP)
W 1 Washer Level Sensor
2004 COROLLA (EWD533U)
34
G ELECTRICAL WIRING ROUTING
Position of Parts in Instrument Panel
A 8 A/C SWAir Inlet Control SWDefroster Mode Detection SW
A10 A/T Shift Lever IlluminationO/D Main SW
A 11 Air Inlet Control Servo MotorA12 Airbag Sensor AssemblyA13 Airbag Sensor AssemblyA14 Airbag Sensor AssemblyA15 Airbag Squib (Front Passenger Airbag Assembly)A16 Airbag Squib (Steering Wheel Pad)A17 Antenna AmplifierA18 Automatic Light Control Sensor
B 3 Blower MotorB 4 Blower ResistorB 5 Blower SWB 6 Buckle SW LH
Seat Position SensorB 7 Buckle SW RH
Occupant Detection Sensor
C 5 Cigarette LighterPower Outlet (Front)
C 6 Cigarette Lighter IlluminationC 7 ClockC 8 Clutch Start SWC 9 Combination MeterC10 Combination SWC11 Combination SWC12 Combination SWC13 Cruise Control Clutch SWC14 Cruise Control ECU
D 1 Data Link Connector 3D 2 Daytime Running Light Relay
E 3 Engine Control ModuleE 4 Engine Control ModuleE 5 Engine Control ModuleE 6 Engine Control Module
2004 COROLLA (EWD533U)
35
G
Position of Parts in Instrument Panel
F 7 Front Passenger Seat Belt Warning Light
G 3 Glass Breakage Sensor ECU
H 7 Hazard SWH 8 Heated Oxygen Sensor (Bank 1 Sensor 2)
I 10 Ignition SWI 11 Integration Relay
J 2 Junction ConnectorJ 3 Junction ConnectorJ 4 Junction ConnectorJ 5 Junction ConnectorJ 6 Junction ConnectorJ 7 Junction Connector
P 3 Parking Brake SWP 4 Power Outlet (Rear)
R 3 Radio and PlayerR 4 Radio and PlayerR 5 Rear Window Defogger SWR 6 Remote Control Mirror SWR 7 Rheostat
S 4 Security IndicatorS 5 Shift Lock Control ECUS 6 Side Airbag Squib LHS 7 Side Airbag Squib RHS 8 Starter Cut RelayS 9 Stop Light SW
T 2 Turn Signal Flasher RelayT 3 TVIP ECU
U 1 Unlock Warning SW
2004 COROLLA (EWD533U)
36
G ELECTRICAL WIRING ROUTING
Position of Parts in Body
A19 ABS Speed Sensor Rear LHA20 ABS Speed Sensor Rear RH
D 3 Door Control ReceiverD 4 Door Courtesy SW Front LHD 5 Door Courtesy SW Front RHD 6 Door Courtesy SW Rear LHD 7 Door Courtesy SW Rear RHD 8 Door Key Lock and Unlock SW Front LH
Door Lock Motor Front LHDoor Unlock Detection SW Front LH
D 9 Door Key Lock and Unlock SW Front RHDoor Lock Motor Front RHDoor Unlock Detection SW Front RH
D10 Door Lock Control SW Front LHD11 Door Lock Control SW Front LH
Power Window Master SWD12 Door Lock Control SW Front RHD13 Door Lock Motor Rear LHD14 Door Lock Motor Rear RH
F 8 Front Door Speaker LHF 9 Front Door Speaker RHF 10 Fuel Pump
Fuel Sender
H 9 High Mounted Stop Light
I 12 Inner MirrorPersonal Light
I 13 Interior Light
J 8 Junction ConnectorJ 9 Junction ConnectorJ 10 Junction Connector
L 1 License Plate Light LHL 2 License Plate Light RHL 3 Luggage Compartment LightL 4 Luggage Compartment Light SW
2004 COROLLA (EWD533U)
37
G
Position of Parts in Body
M 2 Moon Roof Control Relay and SWPersonal Light
M 3 Moon Roof Motor and Limit SW
N 2 Noise Filter (Rear Window Defogger)
P 5 Power Window Control SW Front RHP 6 Power Window Control SW Rear LHP 7 Power Window Control SW Rear RHP 8 Power Window Motor Front LHP 9 Power Window Motor Front RHP10 Power Window Motor Rear LHP 11 Power Window Motor Rear RHP12 Pretensioner LHP13 Pretensioner RH
R 9 Rear Combination Light LHR10 Rear Combination Light LHR11 Rear Combination Light RHR12 Rear Combination Light RHR13 Rear Speaker LHR14 Rear Speaker RHR15 Rear Window DefoggerR16 Rear Window DefoggerR17 Remote Control Mirror LHR18 Remote Control Mirror RH
S10 Side Airbag Sensor LHS 11 Side Airbag Sensor RH
T 4 Tweeter LHT 5 Tweeter RH
V 4 Vapor Pressure SensorV 5 VSV (Vapor Pressure Sensor)
2004 COROLLA (EWD533U)
38
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points
: Location of Splice Points
2004 COROLLA (EWD533U)
39
G
Connector Joining Wire Harness and Wire Harness
1 2 3 4 56 7 8 9 10
5 4 3 2 110 9 8 7 6
EA1
Code Joining Wire Harness and Wire Harness (Connector Location)
EA1 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
2004 COROLLA (EWD533U)
40
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness
: Location of Ground Points
2004 COROLLA (EWD533U)
41
G
Connector Joining Wire Harness and Wire Harness
Code Joining Wire Harness and Wire Harness (Connector Location)
IA1
IA2
IA4 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA5
g ( )
IA6
IB1 Engine Room Main Wire and Floor Wire (Cowl Side Panel LH)
IC1
IC2 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IC3
( )
2004 COROLLA (EWD533U)
42
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness
: Location of Splice Points
2004 COROLLA (EWD533U)
43
G
Connector Joining Wire Harness and Wire Harness
Code Joining Wire Harness and Wire Harness (Connector Location)
ID1Instrument Panel Wire and Floor Wire (Left Kick Panel)
ID2Instrument Panel Wire and Floor Wire (Left Kick Panel)
IE1 Instrument Panel Wire and Instrument Panel No.4 Wire (Behind the Combination Meter)
IF1 Console Box Wire and Instrument Panel Wire (Under the Instrument Panel Center)
IG1 Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)
IH1 Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit)
II1Engine Wire and Instrument Panel Wire (Blower Unit RH)
II2Engine Wire and Instrument Panel Wire (Blower Unit RH)
IJ1Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IJ2Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IK1 Roof Wire and Instrument Panel Wire (Left Side of the Instrument Panel)
2004 COROLLA (EWD533U)
44
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points
: Location of Splice Points
2004 COROLLA (EWD533U)
45
G
Connector Joining Wire Harness and Wire Harness
1 2 34 5 6 7 8
1238 7 6 5 4
1 2 34 5 6 7 8
1238 7 6 5 4
1 2 2 1
1 2 12 1 2 12 1 2 12
BA1 BB1 BC1
BD1
Gray
BE1 BF1
Code Joining Wire Harness and Wire Harness (Connector Location)
BA1 Rear Door LH Wire and Floor Wire (Left Center Pillar)
BB1 Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)
BC1 Skid Control Sensor Wire LH and Floor Wire (Quarter Wheel House LH)
BD1 Skid Control Sensor Wire RH and Floor Wire (Quarter Wheel House RH)
BE1 Speaker Tweeter LH Wire and Front Door LH Wire (Inside of the Front Door LH)
BF1 Speaker Tweeter RH Wire and Front Door RH Wire (Inside of the Front Door RH)
2004 COROLLA (EWD533U)
46
Memo
2004 COROLLA (EWD533U)
47
SYSTEM CIRCUITS H
2004 COROLLAELECTRICAL WIRING DIAGRAM
SYSTEM CIRCUITSPage
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188Automatic Glare–Resistant EC Mirror with Compass . . . . . . . . . . . . . . . . . . . 112Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118Electronically Controlled Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90Key Reminder Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168Light Reminder Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168Moon Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114Radiator Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186Radio and Player . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166SRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78TVIP System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98Wireless Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
2004 COROLLA (EWD533U)
48
Power Source
1A
11 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 21
1
1
1
1
1
1
1C
1
1
1
1
1 2
IB
1
IF12
1B1 G 2
IA4
2
IM
3 6
IM
1D1
1
3
2
5
3
1
5
2
1
1
1
1
1
1
1
1
1 21
30A ABS NO. 1
40A ABS NO. 2
30A RDI FAN
15A FOG
100A ALT
5A ALT–S
15A EFI
30A MAIN
10A HAZARD
40A HEAD MAIN
10A HORN
15A DOME
HEAD Relay
DIMMER Relay
30A POWER
15A AM2
25A DOOR
15A TAIL
15A STOP
15A P/POINT
10A ECU–B
7. 5A OBD
25A AM1
R
L
B–W
G
W
W
R–W
B–R
G–W
B–R
R
R–Y
W–R
R–B
R
R–B
B–W
L–W
B
W
B
WW
B–G
B
RR
–B
FL M
AIN
2. 0
LB
atte
ry1
B Generator
2004 COROLLA (EWD533U)
49
1
5
3
2
6
4
AM2
AM1
ACC
IG1
IG2
ST2
IF
6
IA1
1
1
10A HEAD RH LWR
10A HEAD LH LWR
1
1
1
1
2
2
10A HEAD RH UPR
10A HEAD LH UPR
1
1
1
1
2
2
1 2
1 2 5
1
3
2
IF2
5
1
3
2
IF4 IH10
IE IG
J 7J 6
IM
2
2
5
1
3
4
3
3
3
3 3
IM5
30A DEFOG
40A HEATER
IG1 Relay
DEF Relay
I10
HTR Relay
10A M–HTR/DEF I–UP
10A A/C
10A GAUGE
10A ECU–IG
15A WASHER
25A WIPER
R–W
R
R–W
R
R–B
R
W
B B–W
R
B–Y
L–R
L–WR–W
15A CIG
W
AA
A
W–B
W–B
W–B
B–W
W–B B
Ignition SW
JunctionConnector
JunctionConnector
21Noise Filter
2004 COROLLA (EWD533U)
50
Power Source
HEAD Relay3–5 : Closed with the light control SW at Head position or the dimmer SW at Flash position
: Closed with the engine running and the parking brake lever is released (Parking brake SW off)
I10 Ignition SW1–3 : Closed with the ignition SW at ACC or ON position1–2 : Closed with the ignition SW at ON or ST position5–6 : Closed with the ignition SW at ON or ST position5–4 : Closed with the ignition SW at ST position
: Parts Location
Code See Page Code See Page Code See Page
G2 32 J6 35
I10 35 J7 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IA25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IB25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IF25
IH25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IM 24
( )
1A22 Engine Wire and Engine Room J/B (Engine Compartment Left)
1B22 Engine Wire and Engine Room J/B (Engine Compartment Left)
1C22 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
1D22 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA4 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
Service Hints
2004 COROLLA (EWD533U)
51
Memo
2004 COROLLA (EWD533U)
52
Starting and Ignition
1A1
30AMAIN
1
2
1
5 6
4
AM2 IG2
ST2
I10
IM6
15AAM2
IM3
IA42
5 1
3 2
IM1 IL11
MA1
B1
II17
4 2
3 1
IF4
IE
S 8
A
I 7
IA23 II212
AA AA
BE
P
N
9
6
I 9
I 2
IA510
B–R
21
T 3
2
1
II211
AGAG
AG
J 6
S 2(A), S 3(B)
C 8
A 2
J 2(
A) ,
J 3
( B)
J 2(
A)
R
B–WB–W
R
B–R B B
B
B B B B
B B B
R
B
R R
R R
(A/T)
( M/T
)
( A/T
)( A
/T)
( M/T
)
R
( A/T
)( A
/T)B–R
B–W B–R
(*1)(*1)
( *2)
SR
LY
STRelay
Battery
FL MAIN2. 0L
B
B
B B
B
B
B
B
B
B
(*1)
(*1)
(*2)
( *1
M/T
)
(* 1)
(*2)
( *1)
( *2
M/T
)
( *2)
( M/T
)
( A/T
)
(M/T)
(A/T)
( A/T
)
( A/T
)
( M/T
)
W–B
( *1)
R
(A/T)
W–B
B
Par
k/N
eutr
al P
ositi
on S
W
Clu
tch
Sta
rt S
W
Ignition SW
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
JunctionConnector
Starter
Sta
rter
Cut
Rel
ay TVIP
EC
U
2004 COROLLA (EWD533U)
53
EC
B8
E 2
GND
4
IGT
3
IGF
2
A11
1
+B
GND
4
IGF
2
IGT
3
1
+B
GND
4
IGF
2
IGT
3
1
+B
GND
4
IGF
2
IGT
3
1
+B
B9
B
B
(A/T)
(M/T)
1
A8 A9 A10
E 3 E 3 E 3
EA110
IC12
IL5
E 2 E 2
AF AF
BH
AF AF
I 5I 4I 3I 2
A23
N 1
J 2(A), J 3(B)
E 3(A), E 4(B)
B–W
R
( A/T
)
B–W
B–W
B–W
B–W
B–W
B–W
B–W
B–W
B–W B–W B–W
W–B
L–Y
W
W–B
L–Y
GR
W–B
L–Y
Y–G
W–B
L–Y
R–L
Y–G GR
L–Y
WR–LR
L–Y
L–Y
L–Y
W–B
W–BW–BW–B
W–B
( A/T
)
L–Y
* 1 : w/ TVIP System* 2 : w/o TVIP System
Engine Control Module
Ignition Coil andIgniter No. 1
Ignition Coil andIgniter No. 2
Ignition Coil andIgniter No. 3
Ignition Coil andIgniter No. 4
Junction Connector
Noi
se F
ilter
( Ign
ition
)
IGFIGT1 IGT2 IGT3 IGT4
STA
NSW
2004 COROLLA (EWD533U)
54
Starting and Ignition
I10 Ignition SW5–4 : Closed with the ignition SW at ST position5–6 : Closed with the ignition SW at ON or ST position
S2 (A), S3 (B) StarterPoints closed with the shift lever at P or N position and the ignition SW at ST position (A/T)Points closed with the clutch pedal depressed and the ignition SW at ST position (M/T)
: Parts Location
Code See Page Code See Page Code See Page
A2 32 I4 33 N1 33
C8 34 I5 33 S2 A 33
E3 A 34 I10 35 S3 B 33
E4 B 34 J2 A 35 S8 35
I2 33 J3 B 35 T3 35
I3 33 J6 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IF 25
IL24
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IM24
( )
1A 22 Engine Wire and Engine Room J/B (Engine Compartment Left)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 38 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA2
IA4 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA5
g ( )
II142 Engine Wire and Instrument Panel Wire (Blower Unit RH)
II242 Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code See Page Ground Points Location
EC 38 Left Side of the Cylinder Head
IE 40 Behind the Combination Meter
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
E238 Engine Wire
I742 Instrument Panel Wire
E338 Engine Wire
I942 Instrument Panel Wire
I2 42 Instrument Panel Wire
Service Hints
2004 COROLLA (EWD533U)
55
Memo
2004 COROLLA (EWD533U)
56
Charging
1A1
B
100A
ALT
1
2
1B1
5A A
LT–S
1
2
1
30A
MA
IN
1
2
1
B–R
IA42
B–R
IM3
15AAM2
IM6
5 6AM2 IG2
ST2
B
WB–G
I10
IG L S B
IC REGULATOR
A2 A1 A3 B1
IL5
IK8
Cha
rge
32
31
C 9
3B9
3B10
II22
AB
BC
3B22
3B20
II214
10AGAUGE
From Power Source System(See Page 48)
IG2
R–W
R–W
Y
R–W
YB
–O
J 4(A), J 5(B)
G 1(A), G 2(B)
R–W Y
W
B–G
Battery
FL MAIN2. 0L
EA15
W
B–W
W
B–G
Com
bina
tion
Met
er
Generator
Ignition SW
JunctionConnector
2004 COROLLA (EWD533U)
57
G1 (A) Generator(A) 3–Ground : 13.2–14.0 volts with the engine running at 5000 rpm and 115°C (239°F)(A) 1–Ground : 0–4 volts with the ignition SW at ON position and the engine not running
: Parts Location
Code See Page Code See Page Code See Page
C9 34 G2 B 32 J4 A 35
G1 A 32 I10 35 J5 B 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IG 25
IKInstrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IM
1A22 Engine Wire and Engine Room J/B (Engine Compartment Left)
1B22 Engine Wire and Engine Room J/B (Engine Compartment Left)
3B 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 38 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA4 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
II2 42 Engine Wire and Instrument Panel Wire (Blower Unit RH)
Service Hints
2004 COROLLA (EWD533U)
58
Engine Control
Battery
1A1
30A
MA
IN
15A
EFI
1 1
IA42
IM3
15A
AM
2
IM6
5 6
4
AM2 IG2
ST2
3 2
5 1
3 2
5 1
1 1 IL5 IK8IC12
EA13 EA110
E 3
IG4 ID19 IG1
1 1
5
4
BH
II19EA19
I10
ED
I 7
IA23 II212
2
1
AA AA
BE
IA510
II211
AG
AG
P
N
9
6
IA21
I10
FL MAIN2. 0L
B
B
W–B
B
BB
B–R
G–R
W–B
B
G–R
B
B
R
R–W
B–W
B–O
B–W
R
R–W
R R
R R
R
BB
B
B
B–W
B–W
B–W B–O
B–W
R–W
R–W
R–W
B–R
B–R
B
2 2
1 1
B–WB–W
EFI
Rel
ay
B–W
( M/T
)
( A/T
)
( M/T
)
( A/T
)
( M/T
)( M
/T)
( A/T
)
( A/T
)
( M/T
)
(A/T)
(M/T)
(A/T)
C/O
PN
Rel
ayF
10
J 2(
A)
A 2
J 2(
A) ,
J 3(
B)
C 8
Par
k/N
eutra
lP
ositi
on S
W
Clu
tch
Sta
rt S
W
Fue
l Pum
p
Ignition SW
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
M
2004 COROLLA (EWD533U)
59
E 3
EC
E 2
E 3 E 3
E 2 E 2
AF AF AF
BH
AF
BB BB
AC AC
I10
2
1
I10
B–O
B–W
R–W
R
B
B
G–R
B
B–W
(A/T)
(M/T)
(A/T)
+B GND +B GND +B GND +B GND
DUTY
IGT IGF IGT IGF IGF IGT IGF IGT
GND VISC
1
1 4 1 4 1 4 1 4
3 2
3 2 3 2 2 3 2 3
R
( A/T
)
R–W R–L
Y–G L–Y
GR
L–Y
W
R–L
L–Y
L–Y
GR
L–Y
WW
–B
B–W
W–B
B–W
W–B
B–W
W–B
B–W
W–B
B–O
B–W
W–B
B–W
W–B
B–W
BBB
W–B
B
( A/T
)
B
( M/T
)
G–R
W–B
W–B
W–B
W–B
W–B
B–L
L–B
BB
W–B
I 2 I 3 I 4 I 5
L–Y
Y–G
J 2(A), J 3(B)
J 4(
A) ,
J 5
( B)
I 1 V 3
Idle
Air
Con
trol
Val
ve
Igni
tion
Coi
l and
Igni
ter
No.
1
Igni
tion
Coi
l and
Igni
ter
No.
2
Igni
tion
Coi
l and
Igni
ter
No.
3
Igni
tion
Coi
l and
Igni
ter
No.
4
Junction Connector
Junc
tion
Con
nect
or
VS
V (
EV
AP
)
B8
B9 D10
D3 A8 A11A10A9 A23
B5 A7 A6 A5 A12
IGT3 IGT4
E03 E01 E02
E 3(A), E 4(B), E 5(C), E 6(D)Engine Control Module
FCSTA RSO
BATT IGT1 IGT2 IGFNSW
EVP
2004 COROLLA (EWD533U)
60
Engine Control
2
1
2
1
2
1
2
1
I10 I10 I10
II18
2
1
10AM–HTR/DEF I–UP
From Power Source System (See Page 48)
IL8
II217 II210
2
1
I10
IG
A
1
I10
1
2
B–O
B–W
B B B
BR
BR
B–O
B–W B–W
B–W
B–W
B–W
B–W
B–W
W
B–YYLWBY
L
W–B
L–R G
L–W
Y–B W
LB
W–B B BR
3 2 4
1 5
I 6 I 7 I 8 I 9 C 2
V 2
P 1
M 1
E 2
J 7
Cam
shaf
t Tim
ing
Oil
Con
trol
Val
ve (
VV
T)
Eng
ine
Coo
lant
Tem
p.
Sen
sor
Inje
ctor
No.
1
Inje
ctor
No.
2
Inje
ctor
No.
3
Inje
ctor
No.
4
JunctionConnector
Mas
s A
ir F
low
Met
er
Pow
er S
teer
ing
Oil
Pre
ssur
e S
W
VS
V (
Can
iste
r C
lose
d V
alve
)
VG E2G THA
+B E2
A1 A2 A3 A4 A15 A14 D13
C1 B28 B29 B24 B32 A20 A19
OCV–OCV+
CCV EC THW
E 3(A), E 4(B), E 5(C), E 6(D)Engine Control Module
THAEVGVGPSW
#10 #20 #30 #40 ELS2
2004 COROLLA (EWD533U)
61
AH AH
BF BF
AH
ID21 ID22
ID26
BD
AB AB
II216
2
1
ID28
ID27
15ATAIL
From Power Source System (See Page 48)
IH7
OFF
Tail
Head
Ligh
tC
ontr
ol S
W
2 5
1 3
3 3
3 3
I 4
15ASTOP
IC14
1
2
IC5 IL1
3C13 3C11
II7
IJ6
B–O
BR
BR
B B
B
B–O
G–W G–W
G
Y
Y
BR
B
BR
BR
Y
Y
BR L
L
Y LG
BR
RR
B
G–W
G–B G
GG
–W
Y
L–W
Y
1 2 1 3
3 2
23 13
GSW2 IDL
BR
II27
BR
BR
J 2(
A) ,
J 3(
B)
V 4
J 2(
A) ,
J 3
( B)
T 1
V 5
( Can
ada)
(Canada)
( US
A)
( US
A)
(USA) (USA)
C12
TAIL
Rel
ay
G–W
G–W
R–W
( w/ C
ruis
e C
ontr
ol)
A13
C14
S 913
10
Airb
ag S
enso
r A
ssem
bly
Combination SW
Cru
ise
Con
trol E
CU
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
Sto
p Li
ght S
W
Thro
ttle
Pos
ition
Sen
sor
Vap
or P
ress
ure
Sen
sor
VS
V (
Vap
or P
ress
ure
Sen
sor)
A28 D21 A18 A21 D4
D12 C19 D14 D16
E2
E 3(A), E 4(B), E 5(C), E 6(D)Engine Control Module
ELS F/PS IDLO
VC VTA TBPPTNK
STP
2004 COROLLA (EWD533U)
62
Engine Control
4B2 4B1 4B4
4B3
II1
6
I10
II218 II29
H 5
H 8
I11
FA
N N
O. 2
Rel
ayLG
–B
FA
N N
O. 1
Rel
ayLG
A/C
SW
G–W
M/G
CLT
Rel
ayY
–B
Pre
ssur
e S
WY
A/C
The
rmis
tor
B–L
1
2
AE AE
BA
2
1
B–O B–O
(*1)
(*1)
BR
BR
B
B B
B W
W W W W( *1)
( *1)
B
2 4
1 3
2 4
1 3
B BR
B B B
( *1) B BR
( *1)
( *1) W
( *1) W
P–B
P
B
+B E1
+B E1
HT OX
HT OX
C 3
C 1
J 2(
A) ,
J 3(
B)
BR
* 1 : Shielded
B( *1)
(* 1)
Cam
shaf
t Pos
ition
Sen
sor
Cra
nksh
aft
Pos
ition
Sen
sor
Hea
ted
Oxy
gen
Sen
sor
( Ban
k 1
Sen
sor
1)
Hea
ted
Oxy
gen
Sen
sor
( Ban
k 1
Sen
sor
2)Ju
nctio
n C
onne
ctor
Def
rost
er M
ode
Det
ectio
n S
W
YA
/C S
WD
efro
ster
Mod
e D
etec
tion
SW
D1B4 B23 C4 B21
D7 D6 C33
A/CS
31 CC2 A13 C32 27 A A34 A26
NE+
+B
E 3(A), E 4(B), E 5(C), E 6(D)Engine Control Module
CFFAN ACLDACMG PRS THR NE– G22+
HT1A OX1A OX1BHT1B
2004 COROLLA (EWD533U)
63
II2
8
AA AA
BA BA BA BA
AA AA AA
EB
3B2 4C3
3B3 4C4
II11
IE
4B21
4B16
7. 5AOBD
From Power Source System (See Page 48)
IJ7
B–O B–O
R–Y
Y–R
B
V–W
(*1)
(*1)
BR
BR
BR
L–R
P–B P
L–R
P–B P BR
W–B
R–B
R–B
( *1)
BR B W
V–W B
Y–R
( *1)
( *1)
( *1)
BR
W–B
R–Y
BR
BR
BR
BR
BR
BR
2
7 13 15 5 4 16
SIL TC WFSE SG CG BAT
D 1
A
J 4(
A) ,
J 5(
B)
J 6
W–B
1
K 1
Data Link Connector 3
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
Kno
ck S
enso
r
B7 B1 B2
D18 D20 D19
D11C14D5C17
E1 EKNK TACH
E 3(A), E 4(B), E 5(C), E 6(D)Engine Control Module
THWO W
SIL TC WFSE
KNK1 SPD
2004 COROLLA (EWD533U)
64
Engine Control
10AGAUGE
From Power Source System (See Page 48)
IG2
3B22
3B203B16
II214
AB
BC
4C8
4C9
I 2
IA614 II24
AC
BC
EB
Spe
edom
eter
Tach
omet
er
32 4
33 8 19 10 9
17 3 1 2
Y–R B
V–W
W–G
R–W
R–W
B–O
R–W
B–O
R–Y
Y–R
B
V–W
Mal
func
tion
Indi
cato
r La
mp
( w/o
AB
S)
R–W
( w/o
AB
S)
R–W
( w/o
AB
S)
SP1
BR
( w/o
AB
S)
( w/o
AB
S)
BR
( w/o
AB
S)
W–G
( w/o
AB
S)
W–G
( w/ A
BS
)
W–G
( w/ A
BS
)
W–G
V 1
S 1
J 2(
A) ,
J 3(
B)
J 4(
A) ,
J 5
( B)
C 9
Skid Control ECUwith Actuator
Com
bina
tion
Met
er
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
Vehicle Speed Sensor(Combination Meter)
2004 COROLLA (EWD533U)
65
The engine control system utilizes a microcomputer and maintains overall control of the engine, etc. An outline of enginecontrol is given here.
1. Input Signals(1) Engine coolant temp. signal system
The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance whichvaries according to the engine coolant temp. Thus the engine coolant temp. is input as a control signal to TERMINALTHW of the engine control module.
(2) Intake air temp. signal systemThe intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as acontrol signal to TERMINAL THA of the engine control module.
(3) Power steering oil pressure signal systemPower steering oil pressure is detected by the power steering oil pressure SW and is input as a control signal toTERMINAL PSW of the engine control module.
(4) RPM signal systemCamshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor.Camshaft position is input as a control signal to TERMINAL G2+ of the engine control module, and engine RPM is inputinto TERMINAL NE+.
(5) Throttle signal systemThe throttle position sensor detects the throttle valve opening angle, which is input as a control signal to TERMINAL VTAof the engine control module.
(6) Vehicle speed signal systemThe vehicle speed is detected by the ABS speed sensor and the signal is input to TERMINAL SPD of the engine controlmodule via the comb. meter and the skid control ECU with actuator. (w/ ABS)The vehicle speed is detected by the vehicle speed sensor installed in the transaxle and the signal is input toTERMINAL SPD of the engine control module via the comb. meter. (w/o ABS)
(7) NSW signal system (A/T)The Park/Neutral position SW detects whether the shift position is in neutral or not, and inputs a control signal toTERMINAL NSW of the engine control module.
(8) A/C SW signal systemThe operating voltage of the A/C SW is detected and is input as a control signal to TERMINAL A/CS of the enginecontrol module.
(9) Battery signal systemVoltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned to on,voltage for engine control module operation is applied via the EFI relay to TERMINAL +B of the engine control module.
(10) Intake air volume signal systemIntake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the enginecontrol module.
(11) STA signal systemTo confirm that the engine is cranking, the voltage applied to the starter motor during cranking is detected and is input asa control signal to TERMINAL STA of the engine control module.
(12)Oxygen sensor signal systemThe oxygen density in the exhaust gases is detected and is input as a control signal into TERMINALS OX1A and OX1Bof the engine control module. To maintain stable detection performance by the oxygen sensor, a heater is used forwarming the sensor. The heater is also controlled by the engine control module (HT1A and HT1B).
(13)Engine knock signal systemEngine knocking is detected by the knock sensor and input as a control signal to TERMINAL KNK1 of the engine controlmodule.
(14)Electrical load signal systemWhen systems which cause a high electrical load such as the rear window defogger, taillight are turned on, a signal isinput to TERMINALS ELS and ELS2 as a control signal.
(15)Vapor pressure signal systemVapor pressure is detected by the vapor pressure sensor and is input as a control signal to TERMINAL PTNK of theengine control module.
System Outline
2004 COROLLA (EWD533U)
66
Engine Control
2. Control System∗ SFI system
The SFI system monitors the engine conditions through the signals, which are input from each sensor to the enginecontrol module. Based on this data and the program memorized in the engine control module, the most appropriate fuelinjection timing is decided and current is output to TERMINALS #10, #20, #30 and #40 of the engine control module,operating the injectors (to inject fuel). This is the system which finely controls the fuel injection in response to the drivingconditions, through the engine control module.
∗ ESA systemThe ESA system monitors the engine conditions using the signals, which are input to the engine control module from eachsensor. Based on this data and the program memorized in the engine control module, the most appropriate ignition timingis decided and current is output to TERMINALS IGT1, IGT2, IGT3 and IGT4 of the engine control module. This outputcontrols the ignition coil and igniter No. 1 , No. 2 , No. 3 and No. 4 to produce the most appropriate ignition timing for thedriving conditions.
∗ IAC systemThe IAC system increases the RPM and provides idle stability for fast idle–up when the engine is cold, and when the idlespeed has dropped due to electrical load and so on. The engine control module evaluates the signals from each sensor,and outputs current to TERMINAL RSO to control the idle air control valve.
∗ Knock control systemKnock control system controls the gate based on the engine rotation speed and detects knocking by the peak value of theknock sensor output during the gate open period, and then controls it to the most suitable ignition timing in proportion tothe driving condition.
∗ Evapoparge control systemThis system leads the vapor stuck to the canister to the serge tank in order not to agitate the air fuel by adjusting the fuelinjection volume.The signal at this time will be output from TERMINAL EVP of the engine control module to VSV (EVAP).
3. Diagnosis SystemWith the diagnosis system, when there is a malfunctioning in the engine control module signal system,the malfunctionsystem is recorded in the memory. The malfunctioning system can be found by reading the display (Code) of the malfunctionindicator lamp.
4. Fail–Safe SystemWhen a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control basedon the signals from that system, the fail–safe system either controls the system by using the data (Standard values)recorded in the engine control module memory or else stops the engine.
2004 COROLLA (EWD533U)
67
C/OPN Relay5–3 : Closed with the starter running and the engine running
EFI Relay5–3 : Closed with the ignition SW at ON or ST position
E2 Engine Coolant Temp. Sensor1–2 : Approx. 15.04 kΩ (–20°C, –4°F)
Approx. 5.74 kΩ ( 0°C, 32°F)Approx. 2.45 kΩ (20°C, 68°F)Approx. 0.318 kΩ (80°C, 176°F)
E3 (A), E4 (B), E5 (C), E6 (D) Engine Control ModuleVoltage at engine control module wiring connectors
+B–E1 : 9–14 volts (Ignition SW at ON position)VC–E1 : 4.5–5.5 volts (Ignition SW at ON position)
VTA–E1 : 0.3–0.8 volts (Ignition SW on and throttle valve fully closed): 3.2–4.9 volts (Ignition SW on and throttle valve fully open)
EVG–E1 : 3.3–3.9 volts (Ignition SW at ON position)THA–E1 : 0.5–3.4 volts (Engine idling and intake air temp. 0–80°C, 32–176°F)THW–E1 : 0.2–1.0 volts (Engine idling and engine coolant temp. 60–120°C, 140–248°F)STA–E1 : 6–14 volts (Engine cranking)
IGT1, IGT2, IGT3, IGT4–E1 : Pulse generation (Engine idling)IGF–E1 : Pulse generation (Engine idling)FC–E1 : 9–14 volts (Ignition SW on and engine stopping)
0–3 volts (Engine idling)W–E1 : 9–14 volts (Engine idling and warning light off)
A/CS–E1 : 9–14 volts (Ignition SW on and A/C SW off)SPD–E1 : Pulse generation (Driving approx. 20 km/h)ELS–E1 : 7.5–14 volts (Ignition SW on and taillight on)
ELS2–E1 : 7.5–14 volts (Ignition SW on and rear window defogger on)NSW–E1 : 0–3 volts (Engine cranking)
#10, #20, #30, #40–E1 : Pulse generation (Engine idling)NE+ –NE– : Pulse generation (Engine idling)
RSO–E1 : Pulse generation (Engine idling)G2+ –NE– : Pulse generation (Engine idling)
TBP–E1 : 9.0–14.0 volts (Ignition SW on)PTNK–E1 : 3.0–3.6 volts (Ignition SW at ON position and remove fuel cap)
OX1A, OX1B–E1 : Pulse generation (Maintain engine speed at 2500 rpm for two minutes after warming up.)HT1A, HT1B–E1 : 9.0–14.0 volts (Ignition SW at ON position)
0–3.0 volts (Engine idling)KNK1–E1 : Pulse generation (Engine idling)
EVP–E1 : 9.0–14.0 volts (Ignition SW at ON position)TACH–E1 : Pulse generation (Engine idling)
Service Hints
2004 COROLLA (EWD533U)
68
Engine Control
: Parts Location
Code See Page Code See Page Code See Page
A2 32 F10 36 J4 A 35
A13 34 H5 32 J5 B 35
C1 32 H8 35 J6 35
C2 32 I1 33 J7 35
C3 32 I2 33 K1 33
C8 34 I3 33 M1 33
C9 34 I4 33 P1 33
C12 34 I5 33 S1 33
C14 34 I6 33 S9 35
D1 34 I7 33 T1 33
E2 32 I8 33 V1 33
E3 A 34 I9 33 V2 33
E4 B 34 I10 35 V3 33
E5 C 34 J2 A 35 V4 37
E6 D 34 J3 B 35 V5 37
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IG
IH25
II25
IJ Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IK
( )
IL 24
IM
1A 22 Engine Wire and Engine Room J/B (Engine Compartment Left)
3B28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3C28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 38 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA2
IA440 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA540 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA6
ID2 42 Instrument Panel Wire and Floor Wire (Left Kick Panel)
II142 Engine Wire and Instrument Panel Wire (Blower Unit RH)
II242 Engine Wire and Instrument Panel Wire (Blower Unit RH)
2004 COROLLA (EWD533U)
69
: Ground Points
Code See Page Ground Points Location
EB38 Left Side of the Cylinder Head
EC38 Left Side of the Cylinder Head
ED 38 Front Left Suspension Tower
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
BH 44 Under the Left Quarter Pillar
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
E238 Engine Wire
I7 42 Instrument Panel Wire
E338 Engine Wire
I1042 Engine Wire
I242 Instrument Panel Wire
I1142 Engine Wire
I442 Instrument Panel Wire
2004 COROLLA (EWD533U)
70
Headlight
From Power Source System (See Page 48)
IG2
3B8
3B10
3B16
R–W
10A
GA
UG
E
R–W
12
8
II22
L
1
3B22
3B12
OFF Low
Head
High
Dim
mer
SW
Tail
Flash
Ligh
tC
ontro
l SW
3C6
3C4
Y R
3C5
IE
AA
IA43
ED
C12
15 7 2
13 12 8
IE11 IE13 IE12
20 19 18
A18
1 4 3
G–Y
G–B
G–W
G–Y
G–O
G–R
Y R
Y
W–B
W–B
W–B
10 11
R
G–W
W–B
W–B
D 2
G 1
A
W–BW–B
R–W
J 6
R–W
3
R–B
10A
EC
U–B
IH1
R–B
( *1)
( *1)
( *1)
( *1)
( *1)
( *1)
CSB CSO CSE
ER
–Y
R–Y
16
( *1)
(* 1)
9
( *1)
1
15A
DO
ME
L–W
L–W
1
2
CLTB CLTS CLTE
Automatic LightControl Sensor
Combination SW
Daytime Running Light Relay
Gen
erat
or
JunctionConnector
T H HI
IG+B
CHG
4B
11
4B
21
2004 COROLLA (EWD533U)
71
From Power Source System (See Page 48)
40AHEADMAIN
1
1
11
R–B
R–B
P 3
2 5
1 3
1 1
1 1
IA24 1
10AHEAD LHLWR
1
2
1
10AHEAD RHLWR
1
2
1
1
2
1
2
IA41
61101314
IA515 IA515
B
B
2
1
B 2
J 1
G–B
W–R
R–W
R–W
R–B
R–Y
R–W
R–W
R–W
W–B
W–B
W–R
G–B(*1)
W–B
R–W
R–Y
R–Y
R–B
R–W R
R–B
R–B
R–B
W–B
R–W
D 2
R–B
R–B
R
R
HEADRelay
R–B
DRL
H 2
H 4
( *2)
( *2)
( *3)
( *3)
( *1)
* 1 : USA* 2 : w/ ABS* 3 : w/o ABS
L–W L–W
2
1
I 3
Bra
ke F
luid
Lev
elW
arni
ng S
W
Daytime Running Light Relay
Hea
dlig
ht L
H (
Low
)
Hea
dlig
ht R
H (
Low
)Junc
tion
Con
nect
or
ParkingBrake SW
4
G–O
FOG
Com
bina
tion
SW
PKB
TAIL DIM H–LPBRK
(*4)
* 4 : w/ Fog Light
12
S 1
Ski
d C
ontr
ol E
CU
with
Act
uato
r
PKB
2004 COROLLA (EWD533U)
72
Headlight
1
10AHEAD LHUPR
1
2
1
10AHEAD RHUPR
1
2
1
5 2
3 1
1 1
1 1
IA210IA66
ED EA
1
2
1
2
14
13
5 4 18
Hig
h B
eam
5 2
3 1
3 3
3 3
15ATAIL
From Power Source System (See Page 48)
IH7
R–W
L–W
R–B
4C19
4C20
IL4
IC7
G–WR–B G–W
R
W–R G
G–B
R
L–W
R–W G
L–W
R–B
L–W
RR
R–W
R
W–B
W–B
W–B
W–R
W–B
W–B
R–W R
W–B
W–R
G–B(*1)
W–B
C 9H 1
H 3
( *1)
( *1)
( *1)
(* 1)
( *1)
W–B
* 1 : USA
TAIL
Rel
ay
DIM
ME
R R
elay
E 4
Combination Meter
Hea
dlig
ht L
H (
Hig
h)
Hea
dlig
ht R
H (
Hig
h)
2004 COROLLA (EWD533U)
73
The current is always flowing from the HEAD MAIN fuse to HEAD relay (Coil side) to TERMINAL 6 of the daytime runninglight relay, from ECU–B fuse to TERMINAL 3 of the daytime running light relay and from the TAIL fuse to TAIL relay (Coilside) to TERMINAL 14 of the daytime running light relay (USA).When the ignition SW is turned on, the current flowing through the GAUGE fuse flows to TERMINAL 12 of the daytimerunning light relay.
1. Daytime Running Light OperationWhen the engine is started, voltage generated at TERMINAL L of the generator is applied to TERMINAL 8 of the daytimerunning light relay. If the parking brake lever is pulled up (Parking brake SW on) at this time, the relay is not activated so thedaytime running light system does not operate. If the parking brake lever is then released (Parking brake SW off), a signal isinput to TERMINAL 11 of the relay.This activates the daytime running light relay and the HEAD relay is turned to on, so the current flows from the HEAD MAINfuse to the HEAD relay (Point side) to HEAD LH LWR, HEAD RH LWR fuses to TERMINAL 2 of the headlights to TERMINAL1 to TERMINAL 1 of the daytime running light relay to TERMINAL 2 to GROUND, causing the headlights to light up(Headlights light up dimmer than normal brightness.). Once the daytime running light system operates and the headlightslight up, the headlights remain on even if the parking brake lever is pulled up (Parking brake SW on).If the engine stalls and the ignition SW remains on, the headlights remain light up even through current is no longer outputfrom TERMINAL L of the generator. If the ignition SW is then turned off, the headlights go off.If the engine is started with the parking brake lever released (Parking brake SW off), the daytime running light systemoperates and headlights light up when the engine starts.
2. Headlight OperationWhen the light control SW is switched to Head position and the dimmer SW is set to Low position, causing the daytimerunning light relay and the HEAD relay to turn on, so the current flows from the HEAD MAIN fuse to HEAD relay (Coil side) toTERMINAL 6 of the daytime running light relay to TERMINAL 7 to TERMINAL 12 of the light control SW to TERMINAL 11 toGROUND. The current to HEAD relay (Point side) then flows to HEAD LH LWR, HEAD RH LWR fuses to TERMINAL 2 of theheadlights (Low) to TERMINAL 1 to TERMINAL 1 of the daytime running light relay to TERMINAL 2 to GROUND, causingthe headlights to light up at normal intensity.When the light control SW is switched to Head position and the dimmer SW is set to High position, the signal from thedimmer SW is input to the daytime running light relay. This activates the daytime running light relay and the HEAD relay isturned on, so the current flows from the HEAD MAIN fuse to HEAD relay (Point side) to TERMINAL 1 of the DIMMER relay toTERMINAL 2 to TERMINAL 13 of the daytime running light relay, activating the DIMMER relay. This causes current to flowfrom TERMINAL 3 of the DIMMER relay to TERMINAL 5 to HEAD LH UPR, HEAD RH–UPR fuses to TERMINAL 2 of theheadlights (High) to TERMINAL 1 to GROUND, causing the headlights to light up at high beam and the high beam indicatorlight to light up.When the dimmer SW is switched to Flash position, the signal from the dimmer SW is input to the daytime running light relay.This activates the daytime running light relay and the HEAD relay is turned on, so the current flows from the HEAD MAINfuse to HEAD relay (Point side) to TERMINAL 1 of the DIMMER relay to TERMINAL 2 to TERMINAL 13 of the daytimerunning light relay, activating the DIMMER relay, and also flows from the HEAD LH UPR, HEAD RH UPR fuses toTERMINAL 2 of the headlights to TERMINAL 1 to GROUND, causing the headlights to light up at high beam and the highbeam indicator light to light up.
3. Automatic Light Control Operation (USA)When the daytime running light is operating and the Automatic control sensor detects a decrease in the ambient light, theautomatic light control operation starts. At the same time, daytime running light relay is activated, so current flows from theTAIL fuse to the TAIL relay (Coil side) to TERMINAL 14 of the daytime running light relay, and the HEAD MAIN fuse to theHEAD relay (Coil side) to TERMINAL 6 of the daytime running light relay, activating both the TAIL relay and the HEAD relay,so that the taillights and headlights light up.When the automatic light control sensor detects an increase in the ambient light, the ignition SW is turned to off, the lightcontrol SW is turned to Head position, and the automatic light control operation stops.
System Outline
2004 COROLLA (EWD533U)
74
Headlight
HEAD Relay1–2 : Closed with the light control SW at Head position or the dimmer SW at Flash position
Closed with the engine running and the parking brake lever is released (Parking brake SW off)
D2 Daytime Running Light Relay12–Ground : Approx. 12 volts with the ignition SW at ON position
7–Ground : Approx. 12 volts with the light control SW at Head position or the dimmer SW at Flash position3, 6, 14–Ground : Always approx. 12 volts
11–Ground : Continuity with the parking brake lever pulled up8–Ground : 13.2–14.0 volts with the engine running at 5000 rpm and 115°C (239°F)2–Ground : Always continuity
16–Ground : Continuity with the dimmer SW at High or Flash position10–Ground : Continuity with the brake fluid level not enough or the parking brake lever pulled up
: Parts Location
Code See Page Code See Page Code See Page
A18 34 G1 32 J1 33
B2 32 H1 32 J6 35
C9 34 H2 32 P3 35
C12 34 H3 32 S1 33
D2 34 H4 32
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IG25
IH25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24
( )
3B28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3C28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA2
IA440 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA540 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA6
IE1 42 Instrument Panel Wire and Instrument Panel No.4 Wire (Behind the Combination Meter)
II2 42 Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code See Page Ground Points Location
EA 38 Front Right Fender
ED 38 Front Left Suspension Tower
IE 40 Behind the Combination Meter
Service Hints
2004 COROLLA (EWD533U)
75
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
E4 38 Engine Room Main Wire I3 42 Engine Room Main Wire
2004 COROLLA (EWD533U)
76
Fog Light
10AECU–B
From Power Source System (See Page 48)
IH1
10AGAUGE
IG2
3B22
3B12
OFF Low
Head
High
Dim
mer
SW
Tail
Flash
Ligh
tC
ontr
ol S
W
IE
11
AJ 6
W–B
12 8 9
C12
3C43C5
3C6
EA
15AFOG
1
1
2
1
2 3
1 5
1
1 1
OFF
On
Fog
Ligh
tS
WIA59
2
4C12
2
1
ED
1
2 F 2
F 1
R–W G
R–B
R–W
R–Y R
R–Y
R R
W–B
W–B
RR
R–Y
G–O
G–O
R
W–B
R
G
FOGRelay
Combination SW
Combination SW
Fro
nt F
og L
ight
LH
Fro
nt F
og L
ight
RH
JunctionConnector
7 16 4
3 12D 2
FOG
Daytime Running Light Relay
H HI
IG+B
2004 COROLLA (EWD533U)
77
FOG Relay3–5 : Closed with light control SW at Head position, dimmer SW at Low position and fog light SW at On position
: Parts Location
Code See Page Code See Page Code See Page
C12 34 F1 32 J6 35
D2 34 F2 32
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IG25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IH25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3B28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3C28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA5 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
: Ground Points
Code See Page Ground Points Location
EA 38 Front Right Fender
ED 38 Front Left Suspension Tower
IE 40 Behind the Combination Meter
Service Hints
2004 COROLLA (EWD533U)
78
Turn Signal and Hazard Warning Light
10AGAUGE
IG2
10AHAZARD
From Power Source System (See Page 48)
1
3B22
3B15
IG6IH13IH5IH11IK1IL9
IC1 ID17 ID12IC8 IG5IH12
4
3
4
3
2
3
2
3
BIEAED
W–B
IA58
3 2
2
24 25
F 3
F 4
R 9
R11
C 9
T 2
R–W
G–W
G–W
R–W
G–B
G–Y
G–B
G–Y
W–B
W–B
W–B
W–B
G–B
G–Y
1 4
LL LR
W–B
IG +B
Turn
Turn
G–Y
G–B
LH RH
2
1
G–B
G–Y
Com
bina
tion
Met
er
Fro
nt T
urn
Sig
nal L
ight
RH
Fro
nt T
urn
Sig
nal L
ight
LH
Rea
r C
ombi
natio
n Li
ght L
H
Rea
r C
ombi
natio
n Li
ght R
H
Turn Signal Flasher Relay
2004 COROLLA (EWD533U)
79
3 3C
3C2
21 3A
3A11
LH
RHTur
n S
W
2
3
IG
A
15 4B
4B21
17 4B
4B18
IE
W–B
J 7
7 5 6
6
8
5 7
H 7
C12
T 2
W–B
G–R
G–O
Y–B
Y–B
Y–B
W–B
W–B
W–B
W–B
GND EL ER HAZ
( *1)
( *2)
( *1)
* 1 : w/ Wireless Door Lock* 2 : w/o Wireless Door Lock
AJ 6
Combination SW
Hazard SW
JunctionConnector
JunctionConnector
Turn Signal Flasher Relay
2004 COROLLA (EWD533U)
80
Turn Signal and Hazard Warning Light
T2 Turn Signal Flasher Relay1–Ground : Approx. 12 volts with the ignition SW at ON position7–Ground : Always continuity4–Ground : Always approx. 12 volts
: Parts Location
Code See Page Code See Page Code See Page
C9 34 H7 35 R11 37
C12 34 J6 35 T2 35
F3 32 J7 35
F4 32 R9 37
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IG25
IH25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)IK
24
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL24
3A
3B 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3C
( g )
4B 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA5 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
: Ground Points
Code See Page Ground Points Location
EA 38 Front Right Fender
ED 38 Front Left Suspension Tower
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
BI 44 Lower Back Panel
Service Hints
2004 COROLLA (EWD533U)
81
Memo
2004 COROLLA (EWD533U)
82
Taillight
OFF
Tail
Head
IE
A
4B11
4B21
2 5
1 3
3 3
3 3
15ATAIL
IB1
I 4
13
10
Ligh
tC
ontr
olS
W
G
( US
A)
G–B
( US
A)
G–W
( US
A)
BW
G–W
( US
A)
W–B
( US
A)
W–B
( US
A)
G
(Canada)
TAILRelay
J 6
C12
IL2 IC2 ID2
A
A
2
1F
3 2
1
ED EA
F 4
J 1
GG GG G
W–B
W–B
G
A
IH7
100AALT
1C1
1A1
Battery
G–W
G–W
(USA)
( Can
ada)
FL MAIN2. 0L
W–B
2
1
Combination SW
Fro
nt P
arki
ng L
ight
LH
Fro
nt P
arki
ng L
ight
RH
Junc
tion
Con
nect
or
JunctionConnector
14
15
D 2Daytime RunningLight Relay
TAIL
T
2004 COROLLA (EWD533U)
83
4
1
4
1
Tail
Tail
1
2
1
2
AC AC
BB BB
R 9
R11
L 1
L 2
BI BH
AC
J 8(A)
J 8(A), J 9(B)
G
W–B
W–B
W–B
W–B
W–B
W–B
G G G G
G G
JunctionConnector
Junction Connector
Lice
nse
Pla
te L
ight
LH
Lice
nse
Pla
te L
ight
RH
Rea
r C
ombi
natio
n Li
ght
LH
Rea
r C
ombi
natio
n Li
ght
RH
AA
AA
AA
2004 COROLLA (EWD533U)
84
Taillight
C12 Combination SW10–13 : Continuity with the light control SW at Tail or Head position
TAIL Relay5–3 : Closed with the light control SW at Tail or Head position
: Parts Location
Code See Page Code See Page Code See Page
C12 34 J1 33 L1 36
D2 34 J6 35 L2 36
F3 32 J8 A 36 R9 37
F4 32 J9 B 36 R11 37
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IB25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IC25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IH 25Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1A 22 Engine Wire and Engine Room J/B (Engine Compartment Left)
1C 22 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4B 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Ground Points
Code See Page Ground Points Location
EA 38 Front Right Fender
ED 38 Front Left Suspension Tower
IE 40 Behind the Combination Meter
BH 44 Under the Left Quarter Pillar
BI 44 Lower Back Panel
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I4 42 Instrument Panel Wire
Service Hints
2004 COROLLA (EWD533U)
85
Memo
2004 COROLLA (EWD533U)
86
Illumination
1A1
15ADOME
1
IB1
15ATAIL
IH7
L–W
Battery
FL MAIN2. 0L
B
100AALT
IC7
IL4
3
1
5
10
I 4
I 5I 5
A10
B5
I 4 I 4
OFF
Tail
Head
Ligh
tC
ontr
olS
W
2 5
1 3
3 3
3 3
I 4
1
2 14
G–WG
–W ( *1)
G–W ( *1)
G–B
( *1)
G ( *1)
(* 2)
W
G G G
G G G G
W–BW–B
W–B
G
W–B
W–B
13 10
* 1 : USA* 2 : Canada
C12
D 2
TAILRelay
L–W
A 8
R 5
1C1
L–W
( *2)
R 3
( A) ,
R 4
( B)
A/C
SW
Combination SW
Daytime RunningLight Relay
Rad
io a
nd P
laye
r
Rea
r W
indo
w D
efog
ger
SW
TAIL
1
2
2004 COROLLA (EWD533U)
87
20 4C
18 4C
19 4B
21 4B
IE
A
Illum
inat
ion
1
3
1
2
3
8
4
5
I 4I 4I 4I 4I 4
I 5 I 5 I 5 I 5
5 1 3
2 6
12
G G G G
G
G
L–W
L–W
W–R
W–B
W–B
W–R
W–B
28
18
LED ILL– GND
G G G G G G
W–BW–BW–BW–BW–B
W–B
W–B
W–B
W–B
G
E 6
C 9
L–W
R 7
J 6
H 7
B 5
C 6
A10
+BTAIL
A/T
Shi
ft Le
ver
Illum
inat
ion
Blo
wer
SW
Cig
aret
te L
ight
er Il
lum
inat
ion
Combination Meter
Engine ControlModule
Haz
ard
SW
Junc
tion
Con
nect
or
Rhe
osta
t
ELS
2004 COROLLA (EWD533U)
88
Illumination
C12 Combination SW10–13 : Continuity with the light control SW at Tail or Head position
TAIL Relay5–3 : Closed with the light control SW at Tail or Head position
: Parts Location
Code See Page Code See Page Code See Page
A8 34 C12 34 R3 A 35
A10 34 D2 34 R4 B 35
B5 34 E6 34 R5 35
C6 34 H7 35 R7 35
C9 34 J6 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IB25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IC25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IH 25Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
1A 22 Engine Wire and Engine Room J/B (Engine Compartment Left)
1C 22 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I4 42 Instrument Panel Wire I5 42 Instrument Panel Wire
Service Hints
2004 COROLLA (EWD533U)
89
Memo
2004 COROLLA (EWD533U)
90
Interior Light
15ADOME
1
10AGAUGE
From Power Source System (See Page 48)
25ADOOR
IF4 IH10 IE1
IE
A
ID1 IL3 IK4
1 4C19
4C20
IL4 IE6
1
2
IE4
IC7
ID4
2
1
A
A
1
B 1B
W–B(*1)
B(*2 *5)
D 4
L 3
L 4
J10
L–W
L–W
R–Y
L–W
R
R–W
R–W
W–B
( *1)
C 9
I13
J 6
2
L–W
I11(A)
R–W
R–W
5
17 20
W–B
W–B
W–B
B( *
2 *5
)
(*1 *5)
L–W
L–W
9 5 6
10 1
IG +B
GND DCTY PRCTY
1
L–W
Com
bina
tion
Met
er
Door Courtesy SWFront LH
Integration Relay
Inte
rior
Ligh
t
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
Lugg
age
Com
part
men
tLi
ght
Lugg
age
Com
partm
ent
Ligh
t SW
IG
A
J 7
W–B
Junc
tion
Con
nect
or
Doo
r
2004 COROLLA (EWD533U)
91
IE
A
Off
On
Doo
r
1
1
IE3 ID14 ID15 IK3 IG3
4B9 4B7
4B10
1 1 1
B
W–B(*1)
B(*2 *5)
M 2
I12
B
J 6
R 7
B
R–B
R–Y
R–W
R–B
I11(A)
W–B
B( *
2 *5
)
B( *
2 *6
)
3 6
W–B
(* 1 *5)
D 6
D 7
D 5
R–W
R–W
R–W
R–W
R–W
R–W
A3 A13
LP PCTY
(*4)
( *4)
7
4
( *3)
( *4)
( *3)
( *3)
(*4)
* 1 : w/ Moon Roof* 2 : w/o Moon Roof* 3 : w/o Door Lock Control* 4 : w/ Door Lock Control* 5 : w/ Automatic Glare–Resistant EC Mirror* 6 : w/o Automatic Glare–Resistant EC Mirror
( *1
*6)
( *2,
*1
*5)
4B21
4B19
W–B
3
Doo
r C
ourt
esy
SW
Fro
nt R
H
Doo
r C
ourt
esy
SW
Rea
r LH
Doo
r C
ourt
esy
SW
Rea
r R
H
Integration Relay
JunctionConnector
Per
sona
l Lig
ht
Per
sona
l Lig
ht
Rhe
osta
t
( *1)
B 1
B( *
1 *5
)
B
A12
LP2
(*2
*6)
IK13
B
( *2
*6)
( *5)
( *6)
( *5)
( *6)
( *6)
( *5)
( *6)
( *5)
2004 COROLLA (EWD533U)
92
Interior Light
D4, D5, D6, D7 Door Courtesy SW Front LH, RH, Rear LH, RH1–Ground : Closed with the door open
L4 Luggage Compartment Light SW1–Ground : Closed with the luggage compartment door open
: Parts Location
Code See Page Code See Page Code See Page
C9 34 I11 A 35 J10 36
D4 36 I12 36 L3 36
D5 36 I13 36 L4 36
D6 36 J6 35 M2 37
D7 36 J7 35 R7 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IE 25 Roof Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IG 25
IH Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IK24
( )
IL24
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IK1 42 Roof Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
B1 44 Roof Wire
Service Hints
2004 COROLLA (EWD533U)
93
Memo
2004 COROLLA (EWD533U)
94
Stop Light
15ASTOP
From Power Source System (See Page 48)
IC14
IC5
ID7
1
2
AB AB
BC BC
4
2
4
2
2
1
BHBI
1
2
G–W
G–W
W–B
W–B
W–B
( LE
D T
ype)
G–W
( LE
D T
ype)
H 9
R 9
R11
H 9
J 8(A)
J 8(A), J 9(B)
S 9
R–W
G–W
G–W
G–W
G–W
( Bul
b T
ype)
W–B
( Bul
b T
ype)
W–B
Sto
p
Sto
p
W–B
High MountedStop LightH
igh
Mou
nted
Sto
p Li
ght
Junction Connector
Junction Connector
Rea
r C
ombi
natio
n Li
ght L
H
Rea
r C
ombi
natio
n Li
ght R
H
StopLight SW
AA AA
AA
2004 COROLLA (EWD533U)
95
S9 Stop Light SW2–1 : Closed with the brake pedal depressed
: Parts Location
Code See Page Code See Page Code See Page
H9 36 J9 B 36 R11 37
J8 A 36 R9 37 S9 35
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code See Page Ground Points Location
BH 44 Under the Left Quarter Pillar
BI 44 Lower Back Panel
Service Hints
2004 COROLLA (EWD533U)
96
Back–Up Light
10AGAUGE
From Power Source System (See Page 48)
IG2
3B22
3B20
II214
1
2
II213
ID6
IK9
C
2
1
2
1
AA
BA BA
BH BI
R–W
R–W
R–W
R–B
R–B
R–B
R–B
R–B
W–B
W–B
W–B
C
B 1
J10
R12
R10
B
B
R–W
R–W
(A/T)
R–B
(A/T)
J 4
( M/T
)( M
/T)
R–B
C
J 8(A), J 9(B)
W–B
Bac
k–U
p
Bac
k–U
p
2
3
A 2Back–Up Light SW Back–Up Light SW
JunctionConnector
JunctionConnector
Junction Connector
Rea
r C
ombi
natio
nLi
ght
LH
Rea
r C
ombi
natio
nLi
ght
RH
2004 COROLLA (EWD533U)
97
A2 Back–Up Light SW (A/T)2–3 : Closed with the shift lever at R position
B1 Back–Up Light SW (M/T)2–1 : Closed with the shift lever at R position
: Parts Location
Code See Page Code See Page Code See Page
A2 32 J8 A 36 R10 37
B1 32 J9 B 36 R12 37
J4 35 J10 36
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IG 25Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IK 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3B28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
II2 42 Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code See Page Ground Points Location
BH 44 Under the Left Quarter Pillar
BI 44 Lower Back Panel
Service Hints
2004 COROLLA (EWD533U)
98
Wiper and Washer
25AWIPER
From Power Source System (See Page 48)
IC11 IL7
15AWASHER
IC9
1
2
IA29
M
4 1 2 3
L–R L
L–W
L–W
B+1+2 S
OFF
HI
Off
MIST
INT
LO
( *2)
( *1)
( *3)
Wip
er R
elay
(*4
)
IE
A
IA26IA28
L L L
F 5
J 6
8 9 7 6 5 4
L
L–R
L–W
L–W
W–B
L–Y
C11
Wip
er S
WW
ashe
rS
W
W–B
F 6
E
EA
5W–B
On
L–Y
L–Y
* 1 : w/ Intermittent Volume SW* 2 : w/o Intermittent Volume SW* 3 : w/ Washer Continuous* 4 : w/ Intermittent
L–R
L–W
IA27
L–W
+B +2 +1 +S EW W
Combination SW
Front WasherMotor
Front Wiper Motor
JunctionConnector
M
2004 COROLLA (EWD533U)
99
With the ignition SW turned on, the current flows to TERMINAL 8 of the wiper and washer SW, TERMINAL 2 of the frontwiper motor through the WIPER fuse, and the current flows to TERMINAL 2 of the washer motor through the WASHER fuse.
1. Low Speed PositionWith wiper SW turned to LO position, the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 7to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and causes to the front wiper motor to run at lowspeed.
2. High Speed PositionWith wiper SW turned to HI position, the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 9to TERMINAL 4 of the front wiper motor to TERMINAL 5 to GROUND and causes to the wiper motor to run at high speed.
3. INT PositionWith wiper SW turned to INT position, the relay operates and the current which is connected by relay function flows fromTERMINAL 8 of the front wiper and washer SW to TERMINAL 5 to GROUND. This flow of current operates the intermittentcircuit and the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 7 to TERMINAL 1 of the frontwiper motor to TERMINAL 5 to GROUND and the functions.The intermittent operation is controlled by the charge/discharge function of the condenser installed in the relay, and theintermittent time is controlled by a time control SW (w/ intermittent volume SW) to change the charging time of thecondenser.
4. MIST PositionWith wiper SW turned to MIST position, the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and causes to the front wiper motor to run at lowspeed.
5. Washer Continuous OperationWith the washer SW turned to on, the current flows from TERMINAL 2 of the washer motor to TERMINAL 1 to TERMINAL 4of the front wiper and washer SW to TERMINAL 5 to GROUND and causes to the washer motor to run, and the windowwasher jet operates. This causes the current to flow to washer continuous operation circuit in TERMINAL 8 of the front wiperand washer SW to TERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and the washeroperates continuously.
C11 Combination SW5–Ground : Always continuity8–Ground : Approx. 12 volts with ignition SW at On position7–Ground : Approx. 12 volts with wiper and washer SW at LO position
: Approx. 12 volts with wiper and washer SW at MIST position: Approx. 12 volts every approx. 1 to 10 seconds intermittently with wiper and washer SW at INT position
6–Ground : Approx. 12 volts with ignition SW on unless wiper motor at STOP position9–Ground : Approx. 12 volts with ignition SW on and wiper and washer SW at HI position
F6 Front Wiper Motor2–3 : Closed unless wiper motor at STOP position
: Parts Location
Code See Page Code See Page Code See Page
C11 34 F6 32
F5 32 J6 35
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA2 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
System Outline
Service Hints
2004 COROLLA (EWD533U)
100
Wiper and Washer
: Ground Points
Code See Page Ground Points Location
EA 38 Front Right Fender
IE 40 Behind the Combination Meter
2004 COROLLA (EWD533U)
101
Memo
2004 COROLLA (EWD533U)
102
Horn
10AHORN
From Power Source System (See Page 48)
1
2 3
1 5
1 1
1 1
4A12
4A13
1
C10
H 6
HORNRelay
B–W
G–Y
G–Y
B
B–W
G–Y
( *2)
G–Y
( *1)
( *1)
Hor
n
* 1 : w/ Wireless Door Lock
1
2
* 2 : w/o Wireless Door Lock
Combination SW
Horn
IA518
2004 COROLLA (EWD533U)
103
HORN Relay5–3 : Closed with the horn SW on.
: Parts Location
Code See Page Code See Page Code See Page
C10 34 H6 32
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
4A 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA5 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
Service Hints
2004 COROLLA (EWD533U)
104
Cigarette Lighter
15ACIG
From Power Source System (See Page 48)
IF8
1
2
IE
A
3A10
3A9
GR
GR
W–B
C 5
J 6
CigaretteLighter
JunctionConnector
2004 COROLLA (EWD533U)
105
C5 Cigarette Lighter2–Ground : Approx. 12 volts with the ignition SW at ACC or ON position1–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
C5 34 J6 35
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IF 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
Service Hints
2004 COROLLA (EWD533U)
106
Clock
15ADOME
1
15ACIG
IF8
IC7
IL4
4C20
4C16
3A10
3A5
3A18
3A11
IG
A
OFF
Tail
Head
IE
A
4B11
4B21
2 5
1 3
3 3
3 3
15ATAIL
From Power Source System (See Page 48)
IH7
1 4
3 2
13
10
Ligh
tC
ontr
olS
W
L–W
L–W
L–W
GR
GR
W–B
W–B
G
G
( US
A)
G–B
( US
A)
G–W
( US
A)
G–W
( Can
ada)
G–W
( US
A)
G–W
( US
A)
W–B
( US
A)
W–B
( US
A)
I 4G
(Canada)
TAILRelay
C 7
J 6 J 7
C12Combination SW
Clock
JunctionConnector
JunctionConnector
2
1
14
15
D 2Daytime RunningLight Relay
TAIL
T
2004 COROLLA (EWD533U)
107
C7 Clock4–Ground : Approx. 12 volts with the ignition SW at ACC or ON position1–Ground : Always approx. 12 volts3–Ground : Approx. 12 volts with the light control SW at Tail or Head position2–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
C7 34 D2 34 J7 35
C12 34 J6 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IF25
IH25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24
( )
3A 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I4 42 Instrument Panel Wire
Service Hints
2004 COROLLA (EWD533U)
108
Power Outlet
15AP/POINT
IH6
3A10
3A6
1 5
2 3
3 3
3 3
3A12
3A11
IG IE
IF11
IF12
15ACIG
From Power Source System (See Page 48)
IF8
2
1
GR L
GR
W–B
W–B
L–Y
W–B
W–B
L–Y
P 4
P–POINTRelay
A AJ 7JunctionConnector
Power Outlet(Rear)
3A9
2
1
GR
W–B
C 5Power Outlet(Front)
A
Junc
tion
Con
nect
or
J 6
GR
2004 COROLLA (EWD533U)
109
P–POINT Relay3–5 : Closed with ignition SW at ACC or ON position
1–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
C5 34 J7 35
J6 35 P4 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IF25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IH25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IF1 42 Console Box Wire and Instrument Panel Wire (Under the Instrument Panel Center)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
Service Hints
2004 COROLLA (EWD533U)
110
Remote Control Mirror
SelectSW
OperationSW
RightLeftRightLeft
Right/Down
Left/Up
DownUpRightLeft
M MMM
15ACIG
From Power Source System (See Page 48)
IF8
3A10
3A8
4B22
4B21
IE
A
5 2 4 3 6 7
3C16
3C14 3C15
8
GR
L R LG R–W
BR
–W
W–B
W–B
BR
–W
BR
–W
BR
–W BR
–W
RLG
GR
HL HR VL VR M+ E
B
R 6
MH MV
M+
MH MV
M+
J 6
IC210 IC28 IJ110 IJ18
L
R–W
IJ19 IC29
BR
–W
2 2
1 3 1 3
R17
R18
JunctionConnector
Rem
ote
Con
trol
Mirr
or L
H
Rem
ote
Con
trol
Mirr
or R
H
Remote Control Mirror SW
2004 COROLLA (EWD533U)
111
R6 Remote Control Mirror SW8–6 : Continuity with the operation SW at Down or Right position6–7 : Continuity with the operation SW at Up or Left position
8–Ground : Approx. 12 volts with the ignition SW at ACC or ON position7–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
J6 35 R17 37
R6 35 R18 37
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IF 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3C28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC2 40 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IJ1 42 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
Service Hints
2004 COROLLA (EWD533U)
112
Automatic Glare–Resistant EC Mirror with Compass
10AGAUGE
From Power Source System (See Page 48)
IE5
IG
IE1
IH10
B 1
6
A
7B
–LB
W–B
W–B
J 7
I12
JunctionConnector
Inner Mirror
( *1)
( *1)
B ( *2)
* 1 : w/ Moon Roof* 2 : w/o Moon Roof
2004 COROLLA (EWD533U)
113
I12 Inner Mirror7–Ground : Approx. 12 volts with the ignition SW at ON position6–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
I12 36 J7 35
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IE 25 Roof Wire and Instrument Panel J/B (Lower Finish Panel)
IH 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code See Page Ground Points Location
IG 40 Right Kick Panel
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
B1 44 Roof Wire
Service Hints
2004 COROLLA (EWD533U)
114
Power Window
10AGAUGE
30APOWER
From Power Source System (See Page 48)
2 3
1 5
IF4 ID18
IE
A
IC16
4 5
IG
7
4B
10
4B6 4B9
4B7
IC11 IC32
4B8
6 7
B
B B
W–B B B B
W–B A
W–B
W–B
B B
B B
P 8
1 3 4 9
W–B
W–B Y G
D11
2
1
Y G
J 6
P/WRelay
JunctionConnector
Power Window Master SW
Power Window MotorFront LH
IC
Front LHB B
E E DU DD
Down
B
B
B
M
B 4
2004 COROLLA (EWD533U)
115
SU SU SU
D D D
SD SD SDB B B
UUU
Up
Dow
n
Up
Dow
n
Up
Dow
n
3 1
Y G
3 1
Y G G
1
Y
3
IC31 IC37 IC36 IC35 IC34 IC33
ID13 ID14
BB15BB14BB12BA15BA14BA12IJ25IJ24IJ26
18 15 12 13 10 16
G–R
L–W
R–G L–B
R–B
L–R
R–G L–B
R–B
L–R
R–G L–B
G–R
L–W B
P 9 P10 P11
B
5 2
4
5 2
4
5 2
4
P 5
P 6
P 7
D11
B
G–R
L–W B
R–B
L–R B
R–B
L–R
4 5 5 4 5 4
Pow
er W
indo
w C
ontr
olS
W F
ront
RH
Pow
er W
indo
w C
ontr
olS
W R
ear
LH
Pow
er W
indo
w C
ontr
olS
W R
ear
RH
Power Window Master SW
Power Window MotorFront RH
Power Window MotorRear LH
Power Window MotorRear RH
RRURLDRLUPD
Window Lock SW
Lock
Normal
Front RH Rear RHRear LH
PU RRD
B
B
B
MM M
2004 COROLLA (EWD533U)
116
Power Window
When the ignition SW is turned on, the current flows through the GAUGE fuse to TERMINAL 1 of the P/W relay toTERMINAL 2 to GROUND. This activates the relay and the current flows through the POWER fuse to TERMINAL 5 of therelay to TERMINAL 3 to TERMINAL B of the power window master SW, TERMINAL 4 of the power window control SW.
1. Manual Operation (Driver’s Window)With the ignition SW turned on and with the power window master SW (Front LH) in Up position, the current flowing toTERMINAL B of the power window master SW flows to TERMINAL DU of the master SW to TERMINAL 4 of the powerwindow motor to TERMINAL 5 to TERMINAL DD of the master SW to TERMINAL E to GROUND and rotates the powerwindow motor in the up direction. The window ascends only while the SW is being pulled. In down operation, the flows ofcurrent from TERMINAL B of the power window master SW to TERMINAL DD to TERMINAL 5 of the motor to TERMINAL 4to TERMINAL DU of the master SW to TERMINAL E to GROUND, flowing in the opposite direction to manual up operationand rotating the motor in reverse, thus opening the window.
2. Auto Down Operation (Driver’s Window)When the front LH window control SW in the power window master SW is pushed strongly on the down side, current flowsfrom TERMINAL B of the master SW to TERMINAL DD to TERMINAL 5 of the power window motor to TERMINAL 4 toTERMINAL DU of the master SW to TERMINAL E to GROUND. Because the hold circuit inside the master SW keeps therelay on the down side activated, the power window motor continues operating even if the power window master SW isreleased. When the driver’s window is fully opened, the hold circuit turns off and the relay on the down side turns off, andauto down operation is completed.
3. Stopping of Auto Down Operation (Driver’s Window)When the master SW (Front LH) is pulled to the up side during auto down operation, a ground circuit opens in the masterSW and current does not flow from TERMINAL DU of the master SW to TERMINAL E, so the motor stops, causing autodown operation to stop. If the master SW is pulled continuously, the motor rotates in the up direction in manual up operation.
4. Manual Operation (Front RH Window)With the power window control SW (Front RH) pulled to the up side, current flowing from TERMINAL 4 of the power windowcontrol SW flows to TERMINAL 3 to TERMINAL 4 of the power window motor to TERMINAL 5 to TERMINAL 1 of the powerwindow control SW to TERMINAL 2 to TERMINAL PD of the master SW to TERMINAL E to GROUND and rotates the powerwindow motor (Front RH) in the up direction. Up operation continues only while the power window control SW is pulled to theup side. When the window descends, the current flowing to the motor flows in the opposite direction, from TERMINAL 4 toTERMINAL 5, and the motor rotates in reverse. When the window lock SW is pushed to the lock side, the ground circuit tothe passenger’s window becomes open. As a result, even if Open/Close operation of the passenger’s window is attempted,the current from TERMINAL E of the power window master SW is not grounded and the motor does not rotate, so thepassenger’s window can not be operated and window lock occurs.
5. Manual Operation (Rear LH, Rear RH Window)With the power window control SW (Rear LH, rear RH) pulled to the up side, current flowing from TERMINAL 4 of the powerwindow control SW flows to TERMINAL 3 to TERMINAL 5 of the power window motor to TERMINAL 4 to TERMINAL 1 of thepower window control SW to TERMINAL 2 to TERMINAL RLD, RRD of the master SW to TERMINAL E to GROUND androtates the power window motor (Rear LH, rear RH) in the up direction. Up operation continues only while the power windowcontrol SW is pulled to the up side. When the window descends, the current flowing to the motor flows in the oppositedirection, from TERMINAL 5 to TERMINAL 4, and the motor rotates in reverse. When the window lock SW is pushed to thelock side, the ground circuit to the passenger’s window becomes open. As a result, even if Open/Close operation of thepassenger’s window is attempted, the current from TERMINAL E of the power window master SW is not grounded and themotor does not rotate, so the passenger’s window can not be operated and window lock occurs.
D11 Power Window Master SWB–Ground : Approx. 12 volts with the ignition SW at ON position
DU–Ground : Approx. 12 volts with the ignition SW on and master SW (Front LH window) at Up positionDD–Ground : Approx. 12 volts with the ignition SW on and master SW (Front LH window)
at Down or Auto Down positionE–Ground : Always continuity
Window Lock SWOpen with window lock SW at Lock position
System Outline
Service Hints
2004 COROLLA (EWD533U)
117
: Parts Location
Code See Page Code See Page Code See Page
D11 36 P6 37 P9 37
J6 35 P7 37 P10 37
P5 37 P8 37 P11 37
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IF25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IG25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
4B 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC140 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IC340 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
ID1 42 Instrument Panel Wire and Floor Wire (Left Kick Panel)
IJ2 42 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BA1 44 Rear Door LH Wire and Floor Wire (Left Center Pillar)
BB1 44 Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
B4 44 Front Door LH Wire
2004 COROLLA (EWD533U)
118
Door Lock Control
From Power Source System (See Page 48)
25ADOOR
IF4
IEIG
IH10
3
6 5
IJ212IJ27
B6A5
B5A8
A3B3
IC14IC15
4A20 4A17 4A21 4A18
4A22 4A19
A9 A8
B 3
B 4
IC16IJ21
1
A A A A
9
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
L–W L
L–W L
L–W L
L–W L
L–W L
W–B
W–B
W–B
W–B
W–B
(*1)(*2)
(*1)(*2)
J 7 J 6
D10
( B) ,
D11
( A)
D12
I11(A)
Lock
Unl
ock
Lock
Unl
ock
Doo
r Lo
ck C
ontr
ol S
W F
ront
LH
Doo
r Lo
ck C
ontr
ol S
W F
ront
RH
Integration Relay
JunctionConnector
JunctionConnector
GND L1 UL1
+B
2004 COROLLA (EWD533U)
119
9 10 8
M
1 4
IC111 IC110 IC13 IC18 IC19
A6 A19 A1
11
6 5 7 1
M
4
IJ2 IJ210 IJ23 IJ28 IJ29
4A1
4A34A2
A7 A5 A18
7 8
L–Y
W R G L–B
W–R
G L–Y
W R L G L–B
W–R
G L–Y
W R L G L–B
W–R R L
W–B
W–B
W–B
L
R
L
G
I11(A)
D 8 D 9
Unl
ock
Lock
Unl
ock
Lock
Det
ectio
n
Det
ectio
n
* 1 : w/ Power Window* 2 : w/o Power Window
Door Key Lock and Unlock SW Front LHDoor Lock Motor Front LHDoor Unlock Detection SW Front LH
Door Key Lock and Unlock SW Front RHDoor Lock Motor Front RHDoor Unlock Detection SW Front RH
Integration Relay
UL3 LSWD ACTD L2 UL2 LSWP
2004 COROLLA (EWD533U)
120
Door Lock Control
4A8 4A4 4A9 4A5 4A7
4A6 4A10
IK5 IK2 ID20 ID9
BB18 BB13 BA18 BA13
1
M
4 1
M
4
R L R L
R L
R L R L
L
R
L
I11(A)
D14 D13
3 2
Door Lock Motor Rear LHDoor Lock Motor Rear RH
Integration Relay
ACT– ACT+
2004 COROLLA (EWD533U)
121
D 4
1
R–W
13 A
ID1
R–W
D 6
1
ID14
R–B
D 7
1
ID15
R–Y
D 5
1
65
4A15
4A16
IJ8
U 1
2
IE
L–B
L–B
W–B
4
A
1
J 6
I11(A)
Doo
r C
ourt
esy
SW
Fro
nt L
H
Doo
r C
ourt
esy
SW
Fro
nt R
H
Doo
r C
ourt
esy
SW
Rea
r LH
Doo
r C
ourt
esy
SW
Rea
r R
H
Integration Relay
JunctionConnector
Unl
ock
War
ning
SW
PRCTYDCTY PCTY KSW
2004 COROLLA (EWD533U)
122
Door Lock Control
The current always flows to TERMINAL 1 of the integration relay through the DOOR fuse.
1. Manual Lock OperationWhen the door lock control SW or door key lock and unlock SW are operated to Lock position, a lock signal is input toTERMINAL (A) 9 or (A) 7 of the integration relay and causes the relay to function. The current flows from TERMINAL 1 of therelay to TERMINAL 2 to the door lock motors to TERMINALS (A) 1 and 3 of the relay to TERMINAL 9 to GROUND and thedoor lock motors locks the door.
2. Manual Unlock OperationWhen the door lock control SW or door key lock and unlock SW are operated to Unlock position, an unlock signal is input toTERMINAL (A) 8, (A) 6 or (A) 5 of the integration relay and causes the relay to function. The current flows from TERMINAL 1of the relay to TERMINALS (A) 1 and 3 to the door lock motors to TERMINAL 2 of the relay to TERMINAL 9 to GROUNDand the door lock motors unlocks the door.
3. Double Operation Unlock OperationWhen the door key lock and unlock SW LH is turned to the unlock side, only the driver’s door is unlocked. By turning thedoor key lock and unlock SW LH to the unlock side, a signal is input to TERMINAL (A) 6 of the relay, and if the signal is inputagain within 3 seconds by turning the SW to the unlock side again, current flows from TERMINAL 3 of the integration relay tothe door lock motors to TERMINAL 2 of the relay to TERMINAL 9 to GROUND, causing the door lock motors to operate andunlock the doors.
4. Ignition Key Reminder Operation∗ Operating door lock knob (Operation of door lock motors)
With the ignition key in the cylinder (Unlock warning SW on), when the door is opened and locked using door lock knob(Door lock motor), the door is locked once but each door is unlocked soon by the function of the relay. As a result, thecurrent flows from TERMINAL 1 of the integration relay to TERMINALS (A) 1 and 3 to the door lock motors toTERMINAL 2 of the relay to TERMINAL 9 to GROUND and unlocks all the doors.
∗ Operating door lock control SW or door key lock and unlock SWWith the ignition key in the cylinder (Unlock warning SW on), when the door is opened and locked using door lockcontrol SW or key SW, the door is locked once but each door is unlocked by the function of SW contained in motors,and the signal is input to TERMINAL (A) 19 of the relay. According to this input signal, the current flows from TERMINAL1 of the relay to TERMINALS (A) 1 and 3 to the door lock motors to TERMINAL 2 of the relay to TERMINAL 9 toGROUND and unlocks all the doors.
∗ In case of key less lockWith the ignition the key in the cylinder (Unlock warning SW on), when the unlock function is disturbed, for examplepushing the door lock knob etc., the door holds on lock condition. After closing the door after, door courtesy SW inputsthe signal into TERMINAL 5 or 6 or (A) 13 of the integration relay. By this input signal, the relay works and current flowsfrom TERMINAL 1 of the relay to TERMINALS (A) 1 and 3 to the door lock motors to TERMINAL 2 of the relay toTERMINAL 9 to GROUND and unlocks all the doors.
System Outline
2004 COROLLA (EWD533U)
123
I11 (A) Integration Relay9–Ground : Always continuity5–Ground : Continuity with the driver’s door open1–Ground : Always approx. 12 volts2–Ground : Approx. 12 volts 0.2 seconds with following operation
∗ Door lock control SW locked∗ Locking the driver’s, front passenger’s door cylinder with the key
(A) 9–Ground : Continuity with the door lock control SW locked(A)13–Ground : Continuity with the front passenger’s door open(A)19–Ground : Continuity with the driver’s door lock knob unlocked(A) 8–Ground : Continuity with the door lock control SW unlocked(A) 5–Ground : Continuity with the front passenger’s door lock cylinder unlock with the key(A) 6–Ground : Continuity with the driver’s door lock cylinder unlocked with the key(A) 7–Ground : Continuity with the driver’s, front passenger’s door lock cylinder locked with the key(A) 1 or 3–Ground : Approx. 12 volts 0.2 seconds with following operation
∗ Door lock control SW unlocked∗ Door lock control SW locked with the ignition key in cylinder and the driver’s door open(Ignition key reminder function)∗ Door lock knob locked with the ignition key in cylinder and the driver’s door open(Ignition key reminder function)∗ Unlocking the driver’s, front passenger’s door cylinder with the key
D4, D5, D6, D7 Door Courtesy SW Front LH, RH, Rear LH, RH1–Ground : Closed with the door open
U1 Unlock Warning SW1–2 : Closed with the ignition key in cylinder
: Parts Location
Code See Page Code See Page Code See Page
D4 36 D9 36 D14 36
D5 36 D10 B 36 I11 A 35
D6 36 D11 A 36 J6 35
D7 36 D12 36 J7 35
D8 36 D13 36 U1 35
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IH 25Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IJInstrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IK 24
4A 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC1 40 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IJ2 42 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BA1 44 Rear Door LH Wire and Floor Wire (Left Center Pillar)
BB1 44 Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
Service Hints
2004 COROLLA (EWD533U)
124
Door Lock Control
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
B3 44 Front Door RH Wire B4 44 Front Door LH Wire
2004 COROLLA (EWD533U)
125
Memo
2004 COROLLA (EWD533U)
126
Wireless Door Lock Control
From Power Source System (See Page 48)
25ADOOR
IF4
IEIG
IH10
3
6 5
IJ212IJ27
B6A5
B5A8
A3B3
IC14IC15
4A20 4A17 4A21 4A18
4A22 4A19
A9 A8
B 3
B 4
IC16IJ21
1
A A A A
9
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
L–W L
L–W L
L–W L
L–W L
L–W L
W–B
W–B
W–B
W–B
W–B
(*1)(*2)
(*1)(*2)
J 7 J 6
D10
( B) ,
D11
( A)
D12
I11(A)
Lock
Unl
ock
Lock
Unl
ock
Doo
r Lo
ck C
ontr
ol S
W F
ront
LH
Doo
r Lo
ck C
ontr
ol S
W F
ront
RH
Integration Relay
JunctionConnector
JunctionConnector
GND L1 UL1
+B
2004 COROLLA (EWD533U)
127
9 10 8
M
1 4
IC111 IC110 IC13 IC18 IC19
A6 A19 A1
11
6 5 7 1
M
4
IJ2 IJ210 IJ23 IJ28 IJ29
4A1
4A34A2
A7 A5 A18
7 8
L–Y
W R G L–B
W–R
G L–Y
W R L G L–B
W–R
G L–Y
W R L G L–B
W–R R L
W–B
W–B
W–B
L
R
L
G
I11(A)
D 8 D 9
Unl
ock
Lock
Unl
ock
Lock
Det
ectio
n
Det
ectio
n
* 1 : w/ Power Window* 2 : w/o Power Window
Door Key Lock and Unlock SW Front LHDoor Lock Motor Front LHDoor Unlock Detection SW Front LH
Door Key Lock and Unlock SW Front RHDoor Lock Motor Front RHDoor Unlock Detection SW Front RH
Integration Relay
UL3 LSWD ACTD L2 UL2 LSWP
2004 COROLLA (EWD533U)
128
Wireless Door Lock Control
4A8 4A4 4A9 4A5 4A7
4A6 4A10
IK5 IK2 ID20 ID9
BB18 BB13 BA18 BA13
1
M
4 1
M
4
D 4
1
R–W
13 A
ID1
R–W
D 6
1
ID14
R–B
D 7
1
ID15
R–Y
D 5
1
65
R L R L
R L
R L R L
L
R
L
D14 D13
3 2
I11(A)
Doo
r C
ourt
esy
SW
Fro
nt L
H
Doo
r C
ourt
esy
SW
Fro
nt R
H
Doo
r C
ourt
esy
SW
Rea
r LH
Doo
r C
ourt
esy
SW
Rea
r R
H
Door Lock Motor Rear LHDoor Lock Motor Rear RH
Integration Relay
PCTYDCTY PRCTYACT+ACT–
2004 COROLLA (EWD533U)
129
4A15
4A16
IJ8
U 1
2
IE
ID8 10 ID
BH
AA
BA
13 ID
IC7
15ADOME
From Power Source System (See Page 48)
1
L–B
L–R
L–B
G–Y
L–Y
L–W
W–B
W–B
W–B
4 7 8
1
A
2 3 5
GND
KSW RDA PRG
1
2
1
RDA PRG +BD 3
J 6
J 8(A), J 9(B)
I11(A)
Y–B
Y–B
3 3C
3C1
T 2
8
A25
EHW
A10
18 IA5
1
1 5
2 3
1
HORNRelay
1 1
10AHORN
1
G–Y B
G–Y
G–Y
B–W
B–W
13 4A
4A11
A11R
3C6
R
3C5
7 6
4 IA2
1
2 5
1 3
1
HEADRelay
1 1
40AHEADMAIN
1
R–Y
R–B
R
R
D 2
R–Y
2
1
2
1
DaytimeRunningLight Relay
Door Control Receiver
Integration Relay
JunctionConnector
Junction Connector
Tur
n S
igna
l Fla
sher
Rel
ay
Unl
ock
War
ning
SW
HAZ HORN HRLY
H H–LP
2004 COROLLA (EWD533U)
130
Wireless Door Lock Control
Door lock control (Lock and unlock) and panic control (TVIP alarm and flash) is performed by remote control, without theignition key inserted in the door key cylinder, using low–power electrical waves emitted by a transmitter.
1. Wireless Door Lock or Unlock Normal OperationWith the ignition key not inserted into the ignition key cylinder (Unlock warning SW off) and all the doors completely closed,when the lock or unlock button (Transmitter) is pushed, the door control receiver receives the electrical waves from thetransmitter, and sends a signal to the integration relay causing it to operate.As a result, the integration relay judges whether the door is locked or unlocked based on the signal from the door lock motorand door unlock detection SW, and sends a signal to switch the condition from lock to unlock or vice versa, causing the doorlock motor to operate.
2. Visual Confirmation of Lock or UnlockIf all doors indicate that they are locked after the lock command, parking lights and taillights will flash once. If any doorindicates that it is open after the unlock command, parking lights and taillights will flash twice.
3. Wireless Door Unlock OperationPushing the unlock button (Transmitter) once, driver’s door is unlocked. Furthermore, pushing the button again within 3seconds, the other doors are unlocked.
4. Automatic Lock OperationWith the ignition key not inserted into the ignition key cylinder (Unlock warning SW off) and all the doors completely closed,after pushing the button (Transmitter) to unlock all the doors, if a door is not opened within 30 seconds, all the doors will beautomatically relocked.
5. Wireless Control Stop FunctionIf a door is open (Door courtesy SW on), a signal is input from the door courtesy SW to the integration relay stoppingwireless door lock or unlock.If the ignition key is in the ignition key cylinder (Unlock warning SW on), the unlock warning SW inputs a signal to theintegration relay stopping wireless door lock or unlock.
6. Repeat FunctionIn case an appropriate lock detection signal is not received after outputting a lock signal when pushing the lock button(Transmitter), 1 seconds later, the integration relay output the lock signal again.
7. Remote Panic OperationPanic will function when doors are locked or unlocked, open or closed. When the panic button (Transmitter) is pushed once,theft alarm sounds and headlights and taillights flash. Then, the panic or the unlock button (Transmitter) is pushed oncemore, sounding and flashing will stop. Panic will not function when ignition key is in ignition key cylinder.
System Outline
2004 COROLLA (EWD533U)
131
I11 (A) Integration Relay9–Ground : Always continuity5–Ground : Continuity with the driver’s door open1–Ground : Always approx. 12 volts2–Ground : Approx. 12 volts 0.2 seconds with following operation
∗ Door lock control SW locked∗ Locking the driver’s, front passenger’s door cylinder with the key
(A) 9–Ground : Continuity with the door lock control SW locked(A)13–Ground : Continuity with the front passenger’s door open(A)19–Ground : Continuity with the driver’s door lock knob unlocked(A) 8–Ground : Continuity with the door lock control SW unlocked(A) 5–Ground : Continuity with the front passenger’s door lock cylinder unlock with the key(A) 6–Ground : Continuity with the driver’s door lock cylinder unlocked with the key(A) 7–Ground : Continuity with the driver’s, front passenger’s door lock cylinder locked with the key(A) 1 or 3–Ground : Approx. 12 volts 0.2 seconds with following operation
∗ Door lock control SW unlocked∗ Door lock control SW locked with the ignition key in cylinder and the driver’s door open(Ignition key reminder function)∗ Door lock knob locked with the ignition key in cylinder and the driver’s door open(Ignition key reminder function)∗ Unlocking the driver’s, front passenger’s door cylinder with the key
D4, D5, D6, D7 Door Courtesy SW Front LH, RH, Rear LH, RH1–Ground : Closed with the door open
U1 Unlock Warning SW1–2 : Closed with the ignition key in cylinder
D3 Door Control Receiver5–Ground : Always approx. 12 volts1–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
D2 34 D9 36 J6 35
D3 36 D10 B 36 J7 35
D4 36 D11 A 36 J8 A 36
D5 36 D12 36 J9 B 36
D6 36 D13 36 T2 35
D7 36 D14 36 U1 35
D8 36 I11 A 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IH 25Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IJInstrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IK 24
3C 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4A 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
Service Hints
2004 COROLLA (EWD533U)
132
Wireless Door Lock Control
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA240 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA540 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IC1 40 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IJ2 42 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BA1 44 Rear Door LH Wire and Floor Wire (Left Center Pillar)
BB1 44 Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
BH 44 Under the Left Quarter Pillar
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
B3 44 Front Door RH Wire B4 44 Front Door LH Wire
2004 COROLLA (EWD533U)
133
Memo
2004 COROLLA (EWD533U)
134
TVIP System
10AECU–IG
From Power Source System (See Page 48)
IF9
10AECU–B
IH1
I 7
I 25 2
3 1
IL11
IM1 IF4
II17
4 2
3 1
1A1
30AMAIN
1
IA42
IM3
15AAM2
IM6
5
4
AM2 IG2
ST2
IA23 II212
I 7
2
1
IA510 II211
I 9
IE
BB
–R B
W–B
B
W–B
B
R R
R
RR
B–W R–B
B–W R–B
BB
B B B
B
B–W
R
B–W
R–B
B–R
1
8 1
B
P
N
9
6
A 2
J 2
J 2
S 8
S 3
I10
C 8
G 3
J 6
FL MAIN2. 0L
Battery
B–R
( M/T
)
( A/T
)
( M/T
)
( A/T
)( A
/T)
( A/T
)( A
/T)
( M/T
)( M
/T)
( A/T
)
B–R
STRelay
A
A
G
A
G
TRIG S+B
1
2
IH10
A A
W–B
W–B
W–B
W–B
W–B
W–BA
W–B
W–B
W–B
Par
k/N
eutr
al P
ositi
on S
W
Clu
tch
Sta
rt S
W
Glass Breakage Sensor ECU
Ignition SW
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
JunctionConnector
Starter
Sta
rter
Cut
Rel
ay
2004 COROLLA (EWD533U)
135
I 8 I 8
2
3A19
3A11
IG
1
2
12
KSW CTY
19
DSWD
40
R
U 1
R–W
DSWL
35
1
L 4
ID211
R–W
R–W L–
B
A
A
R–W
J10
HORN
G–Y
5
W–B
T 3
R–W
W–BL
B–R
R–B
B–W
B–W
R–B
B–R
3 6
3 4 1
10 2 21 11 29 25
4 5
W
G 3
IG +B1 SRLY IOUT E IND
MIC GMIC
IOUT GND
W–B
L
W–B
W–B
R–W
W–B
( Shi
elde
d)
S 4
J 7
A
W–B
L–B
R
G–Y
Sec
urity
W–B
W–B
W–B
A W–BAW–B
W–B
W–B
Glass BreakageSensor ECU
Junction Connector
Junc
tion
Con
nect
orLu
ggag
e C
ompa
rtm
ent
Ligh
t S
W
Sec
urity
Indi
cato
r
TVIP ECU
Unl
ock
War
ning
SW
R–W
Microphone
2004 COROLLA (EWD533U)
136
TVIP System
Unl
ock
Lock
7
9 10
Unl
ock
Lock
8
6 5
IC16
D 8
D 9
I 1
8 7
4A1
4A2
IC111 IC110 IC13 IJ211 IJ210 IJ23
W–B
G L–Y
W G L–B
W–R
W–R
L–B
GWL–Y
GG L–
Y
W L–B
W–R
G
Det
ectio
n
Det
ectio
n
16 17 37 18 38
UL3 LSWD UL2 LSWP
IJ21
W–B
W–B
T 2
8
3C2
3C3
Y–B
8
HAZD
Y–B
EH
W
G–Y
RR
G–Y
R–W
W–B
T 3
L2
R
6
HEAD
R
5 3C
6 3C
W–B
R–W
W
IRSG
28
W
2
1
15ADOME
From Power Source System (See Page 48)
1
L–W
IE4
IC7
1
2
I13
4
7
Off
On
Doo
r
IG
3
IE
6
3
9
DMLP
R–W
R–W
R–B
L–W
4B21
4B19
W–B W–B
W–B
R–Y
R 7
R
Doo
r K
ey L
ock
and
Unl
ock
SW
Fro
nt L
HD
oor
Unl
ock
Det
ectio
n S
W F
ront
LH
Doo
r K
ey L
ock
and
Unl
ock
SW
Fro
nt R
HD
oor
Unl
ock
Det
ectio
n S
W F
ront
RH
Inte
rior
Ligh
t
Rhe
osta
t
TVIP ECU
Turn
Sig
nal F
lash
er R
elay
2004 COROLLA (EWD533U)
137
R–W
IL3 ID1 IK4
1
R–W
D 4
R
D 6
1
ID14
R–B
D 7
1
ID15
R–Y
D 5
1
A13
R–W
65
4A12
4A13
IA518
1
2 3
1 5
1
1 1
1
10AHORN
From Power Source System (See Page 48)
1
G–Y
R
G–Y
G–Y B
B–W
B–W
HORNRelay
H 6
I11(A)
6
H–LP
4 IA2
1
2 5
1 3
1
HEADRelay
1 1
40AHEADMAIN
1
R–Y
R–B
R
R
D 2
R–Y
R7
1 1
2 2
R–W
W
26 A
Day
time
Run
ning
Ligh
t R
elay
Doo
r C
ourt
esy
SW
Fro
nt L
H
Doo
r C
ourt
esy
SW
Fro
nt R
H
Doo
r C
ourt
esy
SW
Rea
r LH
Doo
r C
ourt
esy
SW
Rea
r R
H
Hor
n
Integration Relay
PRCTYDCTY PCTYTVSS
H
2004 COROLLA (EWD533U)
138
TVIP System
T3 TVIP ECU10–Ground : Approx. 12 volts with the ignition SW at ON position
2–Ground : Always approx. 12 volts29–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
A2 32 G3 35 L4 36
C8 34 H6 32 R7 35
D2 34 I10 35 S3 33
D4 36 I11 A 35 S4 35
D5 36 I13 36 S8 35
D6 36 J2 35 T2 35
D7 36 J6 35 T3 35
D8 36 J7 35 U1 35
D9 36 J10 36
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IE 25 Roof Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IG 25
IHInstrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IKInstrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24
IM
1A 22 Engine Wire and Engine Room J/B (Engine Compartment Left)
3A28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3C28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4A30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA2
IA4 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA5
g ( )
IC1 40 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
ID2 42 Instrument Panel Wire and Floor Wire (Left Kick Panel)
II142 Engine Wire and Instrument Panel Wire (Blower Unit RH)
II242 Engine Wire and Instrument Panel Wire (Blower Unit RH)
IJ2 42 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
Service Hints
2004 COROLLA (EWD533U)
139
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I1 I842 Instrument Panel Wire
I2 42 Instrument Panel Wire I942 Instrument Panel Wire
I7
2004 COROLLA (EWD533U)
140
Moon Roof
30APOWER
10AGAUGE
From Power Source System (See Page 48)
3 2
5 1
IE2 IF4 IH10 IE1
IE IG
A A
Open
Close
Up
Down
IG LS1 LS2 MTR– GNDMTR+
G–W R–L R G
W–B
W–B
W–B
B
W–B W–B W–B
M 3
M 2
B
W–B
W–B
W–B
W–B
W–B
P/WRelay
J 7
J 6
LS2
LS1
1
2
2 6 7 4 5 8
5 6 1 2
4 3
B 2 B 2
Junc
tion
Con
nect
or
JunctionConnector
Moon Roof Control Relay and SW
Moon Roof Motor and Limit SW
M
2004 COROLLA (EWD533U)
141
The moon roof can be operated when the ignition SW is turned to ON position.
1. Slide Open OperationThe moon roof fully opens automatically by pressing the slide open button of the moon roof control SW once. If the moonroof control switch is pressed again when the moon roof is operating, the movement of the moon roof stops.The operation of slide open is not worked when the moon roof at tilt up position.
2. Slide Close OperationIf you keep pressing the slide close button of the moon roof control SW when the moon roof is open, the moon roof closeshalf and stops the operation once. If you keep pressing the slide close once again, the moon roof fully closes.
3. Tilt Up OperationIf you press the tilt up button of the moon roof control SW, the moon roof is tilted up. However, the moon roof is not tilted upwhen it is open
4. Tilt Down OperationIf you press the tilt down button when the tilt up of the moon roof control SW is pressed, the moon roof is tilted down.
P/W Relay5–3 : Closed with the ignition SW at ON position
M2 Moon Roof Control Relay and SW2–Ground : Approx. 12 volts with the ignition SW at ON position8–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
J6 35 M2 37
J7 35 M3 37
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IE 25 Roof Wire and Instrument Panel J/B (Lower Finish Panel)
IF25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IH25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
B2 44 Roof Wire
System Outline
Service Hints
2004 COROLLA (EWD533U)
142
Electronically Controlled Transmission
1A1
30AMAIN
15AEFI
1 1
15A
AM
2
IM3
IM6
IA42
5 6AM2 IG2
ST2
1
3 2
5 1
1
1 1
4B1
4B3
EA13 IA21 2
1AH AH
BF AB AB
ED
II16EA19
BB
–RB
–RB
B
W–B
B–W
R–W WBR Y
BR
BB
R–W P
R–Y
L–W
R–W
B–W B–O
B
BR
2 2
1 1
E 2
J 2(
A) ,
J 3
( B)
J 2(
A)
I10
Battery
EFIRelay
SLT+ SLT– S1 SL
R–W
R–W
B–W
FL MAIN2. 0L
EA110
IK
8
IL
5
B–W
S2
IC
12
B–O
BR
Y
L
E 1
1 4 3 2 6
Electronically Controlled Transmission Solenoid
Eng
ine
Coo
lant
Tem
p.
Sen
sor
Ignition SW
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
G W Y BGR
E2
A17 16 A 15 B B13
3 D A19A28 A18
D1
+B
E 3(A), E 4(B), E 5(C), E 6(D)Engine Control Module
VC
SLT+ SLT– S1 SL
THWBATT
2004 COROLLA (EWD533U)
143
B–O
(*1)
( *1)
( *1)
AD AD
BB
II13
L
R–Y
LL
6 14
C14
J 2(
A) ,
J 3(
B)
BR
Y
L
3C11
3C13
IL1
IC5
15ASTOP
From Power Source System (See Page 48)
IC14
1
2
R–B
R–W
B–O
R–B
W–B
IG
3A11
B–O
3A17
4
2
II210
BR
EB
W–B
W–B
AA
BR
AA
W–BLG
–B
LL 2L RL
8 4 2
3
II12 II15 13 II2
R–B
LG–B
G–W
LGLG
LG–B
G–W
LG
G–W
IK9
BR
IK10
A A
S 9
A 2
R–W
J 7
A10
J 4(
A)
R–B
R–W
RB
31
2
AC AC
BB
LGV–W
W–B
W–B
W–B
W–B
EC
P–B
P–B
4 4C
4C3
D 1
13
J 4(
A) ,
J 5(
B)
TC
LG
V–W
* 1 : w/ Cruise Control
T 1
A/T
Shi
ft Le
ver
Pos
ition
SW
O/D
Mai
n S
W
Cruise Control ECU
Data LinkConnector 3
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
Junc
tion
Con
nect
or
Sto
p Li
ght
SW
Thro
ttle
Pos
ition
Sen
sor
ODECT
E 3(A), E 4(B), E 5(C), E 6(D)
B14 C18
E1EC
21 A C19
C29 B28 B7
C8 C9 C11
E02E01E03
7 A A6B5
20 D
C7C17
Engine Control Module
TC
ODLPSPDODMSOD1S2
R2LSTPVTA
2004 COROLLA (EWD533U)
144
Electronically Controlled Transmission
10AGAUGE
From Power Source System (See Page 48)
IG2
3B16
3B22
9 4C
4C8
3B20
II214
AB
BC
I 2
AC
BC
EB
B–O
R–W
R–W
R–W
R–W
LG V–W
W–G
W–G
W–G
W–G
BR
BR
R–W
R–W
B–O
R–W
2
3
17
1
32 4
3 10 9
V 1
S 1
O/D
OF
F
C 9
( *2)
J 4(A), J 5(B)
AB(*
2)( *
2)
J 2(A), J 3(B)
( *2)
( *2)
II24IA614
* 2 : w/o ABS
Spe
edom
eter
LG
V–W
V–W
Skid Control ECUwith Actuator
Combination Meter
JunctionConnector
JunctionConnector
Vehicle Speed Sensor(Combination Meter)
SP1
W–G
2004 COROLLA (EWD533U)
145
Previous automatic transaxle have selected each gear shift using mechanically controlled throttle hydraulic pressure,governor hydraulic pressure and lock–up hydraulic pressure. The electronically controlled transmission, however, controlsthe line pressure and lock–up pressure etc. electrically, through the solenoid valve. The engine control module controls eachsolenoid valve based on the input signals from each sensor, which makes smooth driving possible by shift selection for eachgear that is most appropriate to the driving conditions at that time.
1. Gear Shift OperationDuring driving, the engine control module selects the shift for each gear which is most appropriate to the driving conditions,based on input signals from the engine coolant temp. sensor to TERMINAL THW of the engine control module, and also theinput signals to TERMINAL SPD of the engine control module from the vehicle speed sensor devoted to the electronicallycontrolled transmission. Current is then output to the electronically controlled transmission solenoid. When shifting to 1stspeed, the current flows from TERMINAL S1 of the engine control module to TERMINAL 3 of the solenoid to GROUND, andfrom TERMINAL S2 of the engine control module to TERMINAL 6 of the electronically controlled transmission solenoid toGROUND, and continuity to the No.1 and No.2 solenoid causes the shift.For 2nd speed, the current flows from TERMINAL S1 of the engine control module to TERMINAL 3 of the solenoid toGROUND, and from TERMINAL S2 of the engine control module to TERMINAL 6 of the solenoid to GROUND, andcontinuity to solenoids No.1 and No.2 causes the shift.For 3rd speed, there is no continuity to No. 1 solenoid, only to No. 2, causing the shift.Shifting into 4th speed (Overdrive) takes place when there is no continuity to both No.1 and No.2 solenoid.
2. Stop Light SW CircuitIf the brake pedal is depressed (Stop light SW on ) when driving in lock–up condition, a signal is input to TERMINAL STP ofthe engine control module, the engine control module operates and continuity to the lock–up solenoid is cut.
3. Overdrive Circuit∗ Overdrive on
When the engine is turned on from ignition off, the engine control module turns the O/D on. When the O/D main SW ispushed while the O/D is off, a signal is input into TERMINAL ODMS of the engine control module, and the O/D is turnedon by the engine control module. In this case, the engine control module controls the gear shift according to the vehicle’sdriving condition, using the O/D range. At this time, the O/D off indicator light is off.
∗ Overdrive offWhen the O/D main SW is pushed while the O/D is on, a signal is input into TERMINAL ODMS of the engine controlmodule, and the O/D is turned off. At this time, the current flows through the O/D off indicator light to TERMINAL ODLP ofthe engine control module. As a result, the O/D off indicator light turns on, and the engine control module controls the gearshift according to the vehicle’s driving condition, without using the O/D range.
E3 (A), E4 (B), E5 (C), E6 (D) Engine Control ModuleS1, S2–E1 : 9.0–14.0 volts with the ignition SW on and the solenoid on
0–1.5 volts with the ignition SW on and the solenoid offL–E1 : 7.5–14.0 volts with the ignition SW on and the shift lever at L position2–E1 : 7.5–14.0 volts with the ignition SW on and the shift lever at 2 positionR–E1 : 7.5–14.0 volts with the ignition SW on and the shift lever at R position
STP–E1 : 9.0–14.0 volts with the brake pedal depressedTHW–E2 : 0.2–1.0 volts with the engine coolant temp. 60°C (140°F) –120°C (248°F) and engine idlingVTA–E2 : 0.3–0.8 volts with the ignition SW on and the throttle valve fully closed
3.2–4.9 volts with the ignition SW on and the throttle valve fully openVC–E2 : 4.5–5.5 volts with the ignition SW on
ODMS–E1 : 9.0–14.0 volts with the ignition SW on0–3.0 volts with the ignition SW on and press continuously the O/D main SW
+B–E1 : 9.0–14.0 volts with the ignition SW onODLP–E1 : Approx. 12 volts with the ignition SW on and the O/D main SW turned off
A2 A/T Shift Lever Position SW3–2 : Closed with the shift lever in R position3–4 : Closed with the shift lever in 2 position3–8 : Closed with the shift lever in L position
System Outline
Service Hints
2004 COROLLA (EWD533U)
146
Electronically Controlled Transmission
: Parts Location
Code See Page Code See Page Code See Page
A2 32 E3 A 34 J4 A 35
A10 34 E4 B 34 J5 B 35
C9 34 E5 C 34 J7 35
C14 34 E6 D 34 S1 33
D1 34 I10 35 S9 35
E1 32 J2 A 35 T1 33
E2 32 J3 B 35 V1 33
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IG 25
IKInstrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IM
1A 22 Engine Wire and Engine Room J/B (Engine Compartment Left)
3A
3B 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3C
( g )
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 38 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA2
IA4 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA6
g ( )
II142 Engine Wire and Instrument Panel Wire (Blower Unit RH)
II242 Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code See Page Ground Points Location
EB38 Left Side of the Cylinder Head
EC38 Left Side of the Cylinder Head
ED 38 Front Left Suspension Tower
IG 40 Right Kick Panel
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I2 42 Instrument Panel Wire
2004 COROLLA (EWD533U)
147
Memo
2004 COROLLA (EWD533U)
148
Cruise Control
Spe
edom
eter
3B22
4C20
3B20
4C19
10AGAUGE
IG2
5 6AM2 IG2
ST2
4C7
4C8
1A1
30AMAIN
1
IA42
1M3
15AAM2
1M6
15ADOME
From Power Source System (See Page 48)
1
3B19
3B
16
CR
UIS
E
II214
B
B
3C19
3C20II14
IA55
2
1
IA514
3C17
IC7
IL4
3245
2
1 10 23
BB
–RB
–R
L–W
L–W
L–W
R–W B–O
R–W
R–W
R–W
LR
–W
R–W
L
L
V–W
V–W
G–R
B–W
L
G–R
V–W
L
R–W
J 4
C13
C 9
Battery
FL MAIN2. 0L
B
I10
IL5
IK8
B–W
( M/T
)
( M/T
)( M
/T)
( A/T
)
R–W
7
( A/T
)( A
/T)
( A/T
)
(A/T)
( M/T
)A 2
3
A/T ShiftLeverPosition SW
Com
bina
tion
Met
er
Cru
ise
Con
trol
Clu
tch
SW
Ignition SW
JunctionConnector
D
2
1
2004 COROLLA (EWD533U)
149
CRUISE
M
RES/ACC
SET/COAST
CANCEL
II13
AD
BB
10AECU–IG
From Power Source System (See Page 48)
IF9
3B5
3B6
15ASTOP
From Power Source System (See Page 48)
IC14
IL1
IL5
3C12
3C13
IA513IA54IA512
MC MO L
GND
CCS
ECC
IA53
4B14
4B12 4B214B13
IE
2
3 2
312
43
62
4 5 12 11 7 15 8 3 16
4 1
B14C18D16
4C3
4C2
101413
GND
L
G–R
V–W
G–Y
R–L
R–G
G–O
G–W
W–B
R–Y
W–B
W–B
G–W
G–W
W–B
W–B
P–B
P–B
LL
R–Y
L–W
R–W
B–W
B–W
L
G–O
R–GR–L
R–W
G–R
V–W
L
W–B
+B
C10 C 4
C14
D 1
E 4(B), E 5(C), E 6(D)
J 2(A), J 3(B)
S 9
( *1)
( *1)
( *1)
( *1)
13
TC
W–B
A
J 6
* 1 : A/T
Combination SW Cruise Control Actuator
Cruise Control ECU
Data LinkConnector 3
Engine Control Module
JunctionConnector
Junc
tion
Con
nect
or
Sto
p Li
ght S
W
OD1
IDL OD ECT TC
D PI SPD CCS MC MO L STP–
IDLO S2
2004 COROLLA (EWD533U)
150
Cruise Control
The current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.With the ignition SW turned to on, the current flows through the MAIN fuse to AM2 fuse to ignition SW (IG2) to TERMINAL 32of the combination meter and the current through the ECU–IG fuse flows to TERMINAL 2 of the cruise control ECU.When the ignition SW is on and the CRUISE SW is turned on, a signal is input from TERMINAL 2 of the cruise control SW toTERMINAL 1 of the cruise control ECU. As a result, the cruise control ECU functions and the current flows from the ECU–IGfuse to TERMINAL 2 of the cruise control ECU to TERMINAL 16 of the cruise control ECU to GROUND, and the cruisecontrol system is in a condition ready for operation.At the same time, the current flows through the MAIN fuse to AM2 fuse to ignition SW (IG2) to TERMINAL 32 of the cruiseindicator light to TERMINAL 23 to TERMINAL 5 of the cruise control ECU to TERMINAL 16 to GROUND, causing the cruiseindicator light to light up, indicating that cruise control is ready for operation.
1. Set OperationWhen the CRUISE SW is turned on and the SET SW is pushed with the vehicle speed within the set limit (Approx. 40 km/h,25 mph to 200 km/h, 124 mph), a signal is input to TERMINAL 11 of the cruise control ECU, and the vehicle speed at thetime the SET SW is released is memorized in the ECU as the set speed.
2. Set Speed ControlDuring cruise control driving, the ECU compares the set speed memorized in the ECU with the actual vehicle speed inputinto TERMINAL 12 of the cruise control ECU from the combination meter, and controls the cruise control actuator to maintainthe set speed.When the actual speed is lower than the set speed, the ECU causes the current to the cruise control actuator to flow fromTERMINAL 15 of the cruise control ECU to TERMINAL 1 of the cruise control actuator to TERMINAL 2 to TERMINAL 7 ofthe cruise control ECU. As a result, the motor in the cruise control actuator is rotated to open the throttle valve and thethrottle cable is pulled to increase the vehicle speed. When the actual driving speed is higher than the set speed, the currentto the cruise control actuator flows from TERMINAL 7 of the ECU to TERMINAL 2 of the cruise control actuator toTERMINAL 1 to TERMINAL 15 of the cruise control ECU.This causes the motor in the cruise control actuator to rotate to close the throttle valve and return the throttle cable todecrease the vehicle speed.
3. Coast ControlDuring cruise control driving, while the COAST SW is on, the cruise control actuator returns the throttle cable to close thethrottle valve and decrease the driving speed. The vehicle speed when the COAST SW is turned off is memorized, and thevehicle continues at the new set speed.
4. Accel ControlDuring cruise control driving, while the ACC SW is turned on, the cruise control actuator pulls the throttle cable to open thethrottle valve and increase the driving speed.The vehicle speed when the ACC SW is turned off is memorized and the vehicle continues at the new set speed.
5. Resume ControlUnless the vehicle speed falls below the minimum speed limit (Approx. 40km/h, 25mph) after canceling the set speed by theCANCEL SW, pushing the RES SW will cause the vehicle to resume the speed set before cancellation.
6. Manual Cancel MechanismIf any of the following operations occurs during cruise control operation, the magnetic clutch of the actuator turns off and themotor rotates to close the throttle valve and the cruise control is released.∗ Placing the shift lever to positions except ”D” position (Park/Neutral position SW except ”D” position)(A/T), depressing the
clutch pedal (Cruise control clutch SW off)(M/T). ”Signal is not input to TERMINAL 4 of the ECU”∗ Depressing the brake pedal (Stop light SW on). ”Signal input to TERMINAL 3 of the ECU”∗ Pushing the CANCEL SW (CANCEL SW on). ”Signal input to TERMINAL 1 of the ECU”∗ Pushing the CRUISE SW off ”signal input to TERMINAL 1 of the ECU”.
7. Tap–Up Control FunctionWhen the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can beincreased 1.6 km/h (1 mph) each time by operating the RES/ACC SW quickly within 0.6 seconds.
8. Tap–Down Control FunctionWhen the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can belowered 1.6 km/h (1 mph) each time by operating the SET COAST SW quickly within 0.6 seconds.
System Outline
2004 COROLLA (EWD533U)
151
9. Auto Cancel FunctionA) If any of the following operating conditions occurs during cruise control operation, the set speed is erased, current flow tothe magnetic clutch is stopped and the cruise control is released, (CRUISE SW turns off).When this occurs, the ignition SW must be turned off once before the CRUISE SW will turn on.∗ When current continues to flow to the motor inside the actuator in the throttle valve ”OPEN” direction.∗ The motor does not operate despite the motor drive signal being output.B) If any of the following operating conditions occurs during cruise control operation, the set speed is erased, current flow tothe magnetic clutch is stopped and the cruise control is released. (CRUISE SW turn off).When this occurs, the cancel state is cleared as the CRUISE SW will turn on again.∗ Over current to transistor driving the motor or the magnetic clutch.∗ Open circuit in the magnetic clutch.∗ Momentary interruption of vehicle speed signal.∗ Short circuit in the cruise control SW.C) If any of the following conditions occurs during cruise control operation, the set speed is erased and the cruise control isreleased. (The power to the magnetic clutch is cut off until the SET SW is ”ON” again.)∗ When the vehicle speed falls below the minimum speed limit, approx. 40 km/h (25 mph)∗ When power to the cruise control system is momentarily cut off.
10. Automatic Transaxle Control Function (A/T)∗ In overdrive. If the vehicle speed becomes lower than the overdrive cut speed (Set speed minus approx. 4 km/h, 2.5 mph)
during cruise control operation, such as driving up a hill, the overdrive is released and the power is increased to prevent areduction in vehicle speed.
∗ After releasing the overdrive, if the vehicle speed becomes higher than the overdrive return speed (Set speed minusapprox. 2 km/h, 1.2 mph) and the ECU judges by the signals from the actuator’s potentiometer that the upward slope hasfinished, the overdrive is resumed after approximately 2 seconds.
∗ During cruise control driving, the cruise control operation signal is output from the cruise control ECU to the engine controlmodule. Upon receiving this signal, the engine control module changes the shift pattern to normal.To maintain smooth cruise control operation (on a downward slope etc.), the lock–up release of the transaxle when theidling point of the throttle position is ”ON” is forbidden.
C10 Combination SW2–3 : Continuity with the CRUISE SW on2–3 : Approx. 1540 Ω with the CANCEL SW on
Approx. 240 Ω with the RES/ACC SW onApprox. 630 Ω with the SET/COAST SW on
C14 Cruise Control ECU2–Ground : 12 volts with the ignition SW at ON position1–Ground : Approx. 1540 Ω with the CANCEL SW on in the control SW
Approx. 630 Ω with the SET/COAST SW on in the control SWApprox. 240 Ω with the RES/ACC SW on in the control SW
16–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
A2 32 D1 34 J3 B 35
C4 32 E4 B 34 J4 35
C9 34 E5 C 34 J6 35
C10 34 E6 D 34 S9 35
C13 34 I10 35
C14 34 J2 A 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
Service Hints
2004 COROLLA (EWD533U)
152
Cruise Control
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IF25
IG25
IK Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24
( )
IM
1A 22 Engine Wire and Engine Room J/B (Engine Compartment Left)
3B28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3C28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA440 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA540 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
II142 Engine Wire and Instrument Panel Wire (Blower Unit RH)
II242 Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
2004 COROLLA (EWD533U)
153
Memo
2004 COROLLA (EWD533U)
154
ABS
5 6AM2
ACC
IG2
ST2
15AAM2
IM3
IM6
IA42
1
30AMAIN
1A1
10AGAUGE
IG2
3B22
3B16
IK8
IL5
15ADOME
From Power Source System (See Page 48)
1
IC7
IL4
4C19
4C20
4
Bra
ke
AB
S
IA517
2
1
ED
4B21
4B18
IE
35
2
W–B
W–B
R–W
R–W
W–B
AJ 6
B 2
Spe
edom
eter
32 5
I10
BB
–RB
–RB
R–W
R–W
B–O
L–W
L–W
L–W
37 36
1
2
Battery
9
W–G
R
W–R
C 9
FLMAIN2. 0L
B–W
B–W
2
1
Bra
ke F
luid
Lev
elW
arni
ng S
W
Com
bina
tion
Met
er
Ignition SW
JunctionConnector
2004 COROLLA (EWD533U)
155
IA614 IA516 IA65
EA
E 1
1
2
1
2
1
2
1
2
10AECU–IG
IC13
15ASTOP
IC
1
2
30AABSNO. 1
From Power Source System (See Page 48)
1
40AABSNO. 2
114
3 16 2 24
IA611 IA612 IA64
4C3 3B2
4C1 3B1
12 13 7
1
IA515
D 1
D 2
10 11
R–B
R–W
R–WL–
R
P–BGR
GR
P–B
L–R
P–B
L–R
W–G R
W–R
W–B
W–B R G B W
B Y R W
BB Y W
W–B
W–G
B–W
R–W
G–W
R L
P 3
10 8 11 12
TS TC SIL
17 19 30 23 1 13 26 27 28 7 6 5 4
A 3
A 4
A19
A20
R
W–R
S 1
22
1 1
S 9
IB11 IB12 IB13 IB14
Skid Control ECUwith Actuator
AB
S S
peed
Sen
sor
Fro
nt L
H
AB
S S
peed
Sen
sor
Fro
nt R
H
AB
S S
peed
Sen
sor
Rea
r LH
AB
S S
peed
Sen
sor
Rea
r R
H
Data Link Connector 3
Daytime Running LightRelay
Par
king
Bra
ke S
W
StopLight SW
BC11 BD11
W W
B R
GND2 GND1 FL+ FL– FR+ FR– RL+ RL– RR+ RR–
+BSIG1 +BM TS TC
SP1 BRL WA
D/GSTP PKB
BRK PKB
BC12 BD12
2004 COROLLA (EWD533U)
156
ABS
ABS is a brake system designed to improve the operating ability and securing the stability of the vehicle by preventing thelock–up of the vehicle by controlling the wheel cylinder pressure of all the four wheels at the time of sudden braking.
1. Input Signals(1) Speed sensor signal
The speed of the wheels is detected and input to TERMINALS FL+, FR+, RL+, and RR+ of the skid control ECU andactuator.
(2) Stop light SW signalA signal is input to TERMINAL STP of the skid control ECU with actuator when brake pedal is depressed.
2. System OperationWhen the wheels are locked–up, the solenoid inside the actuator is controlled by the signal from the skid control ECU withactuator, and the brake fluid in the wheel cylinder will flow through the reservoir and reduce the hydraulic pressure.While the ABS is in operation, as the skid control ECU with actuator always outputs the operation signal to the pump insidethe actuator, and the brake fluid stored inside the reservoir will be sucked up by the pump inside the actuator and returned tothe master cylinder.When the hydraulic pressure of the wheel cylinder is decompressed or increased until the necessary hydraulic pressure, thesolenoid inside the actuator is controlled by the control signal from the skid control ECU with actuator and as a result,hydraulic pressure of the wheel cylinder will be closed at both the master cylinder and reservoir sides routes, and thehydraulic pressure of the wheel cylinder will be in the hold condition.If increase of the hydraulic pressure volume of the wheel cylinder becomes necessary, the control signals from the skidcontrol ECU with actuator control the solenoid inside the actuator, to resume to the normal condition. Thus the brake fluid ofthe master cylinder will be sent to the wheel cylinder and will increase the hydraulic pressure of the wheel cylinder. At thistime, in the case that the brake fluid is left in the reservoir, it will be sucked up by the pump inside the actuator and will besent to the wheel cylinder.
A3, A4 ABS Speed Sensor Front LH, RH2–1 : 0.92 –1.22 kΩ (25°C, 77°F)
A19, A20 ABS Speed Sensor Rear LH, RH1–2 : 1.0 –1.4 kΩ (25°C, 77°F)
S1 Skid Control ECU with Actuator23, 1–Ground : Always continuity
3–Ground : Approx. 12 volts with the ignition SW at ON position16–Ground : Approx. 12 volts with the brake pedal depressed
2, 24–Ground : Always approx. 12 volts
: Parts Location
Code See Page Code See Page Code See Page
A3 32 C9 34 P3 35
A4 32 D1 34 S1 33
A19 36 D2 34 S9 35
A20 36 I10 35
B2 32 J6 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
System Outline
Service Hints
2004 COROLLA (EWD533U)
157
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IG 25
IKInstrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IM
1A 22 Engine Wire and Engine Room J/B (Engine Compartment Left)
3B 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA4
IA5 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA6
g ( )
IB1 40 Engine Room Main Wire and Floor Wire (Cowl Side Panel LH)
BC1 44 Skid Control Sensor Wire LH and Floor Wire (Quarter Wheel House LH)
BD1 44 Skid Control Sensor Wire RH and Floor Wire (Quarter Wheel House RH)
: Ground Points
Code See Page Ground Points Location
EA 38 Front Right Fender
ED 38 Front Left Suspension Tower
IE 40 Behind the Combination Meter
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
E1 38 Engine Room Main Wire
2004 COROLLA (EWD533U)
158
Memo
2004 COROLLA (EWD533U)
159
SRS
NOTICE: When inspecting or repairing the SRS, perform the operation in accordance with the following precautionaryinstructions and the procedure and precautions in the Repair Manual for the applicable model year.
Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of informationwhen troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.
Work must be started after 90 seconds from when the ignition switch is turned to the ”LOCK” position and thenegative (–) terminal cable is disconnected from the battery.(The SRS is equipped with a back–up power source so that if work is started within 90 seconds fromdisconnecting the negative (–) terminal cable of the battery, the SRS may be deployed.)
When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will becanceled. So before starting work, make a record of the contents memorized in the audio memory system. When work isfinished, reset the audio systems as they were before and adjust the clock. This vehicle has power tilt and powertelescopic steering, power seat and power outside rear view mirror which are all equipped with memory function.However, it is not possible to make a record of the memory contents. So when the work is finished, it will be necessaryto explain this fact tot the customer, and ask the customer to adjust the features and reset the memory. To avoid erasingthe memory in each memory system, never use a back–up power supply from outside the vehicle.
Before repairs, remove the airbag sensor if shocks are likely to be applied to the sensor during repairs.
Do not expose the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner,airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly directly to hot air or flames.
Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front passenger airbagassembly, side airbag assembly, seat belt pretensioner, airbag sensor assembly, front airbag sensor assembly and sideairbag sensor assembly should be inspected.
Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.
Never disassemble and repair the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat beltpretensioner, airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly in order to reuse it.
If the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner, airbag sensorassembly, front airbag sensor assembly or side airbag sensor assembly has been dropped, or if there are cracks, dentsor other defects in the case, bracket or connector, replace them with new ones.
Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting the system’s electrical circuits.
Information labels are attached to the periphery of the SRS components. Follow the instructions on the notices.
After work on the SRS is completed, perform the SRS warning light check.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the RepairManual.
2004 COROLLA (EWD533U)
160
SRS
5 6AM2 IG2
ST2
15AAM2
30AMAIN
IM6
1
IM3
1A1
IA42
A11A4A3
I 6
C8
IG13 IG11
IG
IG12IG14
3A153A14
3A11
1
1
1
2543423
A
LBE+LSP–LSP+
G–Y
L–W
B–W
GR–B
G–W
G–YBB
L–W
W–B
W–B
W–B
B
G–YB
L–W
BB
–RB
–RB
B–W
RBE+
2
I10
B 6
B 7
A12(A), A13(B), A14(C)
W–B
W–B
J 7
FL MAIN2. 0L
Battery
Airbag Sensor Assembly
Buckle SW LHSeat Position Sensor
Buckle SW RHOccupantDetection Sensor
Ignition SW
JunctionConnector
VS GND
Seat PositionSensor
Buc
kle
SW
Buc
kle
SW
Occ
upan
tD
etec
tion
Sen
sor
2004 COROLLA (EWD533U)
161
A6 A5 C1 C2
A2 A1 C5 C6
21 21
A12 A9 A10 A7
B14 B13 B16 B17
C7 C10 C9 C12
B10 B11 B8 B7
1 2 1 2 1 2 3 4 1 2 3 4
1 2 4 3 1 2 3 4
P2–P2+P–P+D2–D2+D–D+PR–PR+PL–PL+
G–Y
L–W
B–W
G–Y
L–W
B–W
Y–P
Y–G
R
Y–G
Y–R
Y–GY–VYY–BYY–BYY–B
Y–R
Y–G
Y–R
Y–G
GR
–L
L–W
LG–B
P–L GR
L–Y
LG P
VUPRFSRSSR–ESRVUPLFSLSSL–ESLSFR–SFR+SFL–SFL+
( *1)
( *1)
( *1)
( *1)
( *1)
( *1)
( *1)
( *1)
( *1)
( *1)
( *1)
( *1)
S 6 S 7S10 S11
A12(A), A13(B), A14(C)
P12 P13 A16 A15
Airbag Sensor Assembly
Airbag Squib(Front Passenger Airbag Assembly)
Airbag Squib(Steering Wheel Pad)
Pretensioner LH Pretensioner RH
Side Airbag Sensor LH Side Airbag Sensor RHSide AirbagSquib LH
Side AirbagSquib RH
VUPRFSRSSR–ESRVUPLFSLSSL–ESL
* 1 : w/ Side Airbag
D+ D– D2+ D2– P+ P– P2+ P2–
2004 COROLLA (EWD533U)
162
SRS
G–Y
L–W
B–W
A12(A), A13(B), A14(C)
IA13
B15
IA14 IA11 IA12
B26 B9 B20
2 1 2 1
A 5 A 6
W–R BR
B–W
BR
–W
W–R BR
B–W
BR
–W
+SL –SL +SR –SR
+SL +SR–SL –SR
B5
IL5
II8
B28 B27 B23 B19 B12 B3
IH10 IF4 IJ6 IJ4 IJ5 IJ1
II10 II3 II7 II1 II2 II5
IG
4C5 3B4 4C15
4C3 3B2 4C13
IK8
4C14 4B18
4B21
IE
10AGAUGE
From Power Source System (See Page 48)
IG2
15ADOME
1
39 2
32 12 11 4 5
A
14 13 7 11
AA
W–B
B–Y
W–B
W–B
B–Y
L–R
P–BY
W–B
W–B
Y
W–B
W–B
P–B
L–R
B–Y
P–B
L–R
B–Y
B–O
B–O
B–W
L–W
G–Y
3B22
IC7
4C20
IL4
4C19
3B16
L–W
L–W
L–W
R–W
R–W
E2 E1 GSW2 TC SIL LA
IG2
D 1
J 6J 7
C 9
E 6
TC SIL A/B
SR
S
Airbag Sensor Assembly
Airbag Sensor Front LH Airbag Sensor Front RH
Combination Meter
Data Link Connector 3
Eng
ine
Con
trol
Mod
ule
JunctionConnectorJunction
Connector
F/PS
1
2
2004 COROLLA (EWD533U)
163
The SRS is a driver and front passenger protection device which has a supplemental role to the seat belts.When the ignition SW is turned to ON, current from the MAIN fuse flows to AM2 fuse to ignition SW (IG2) to TERMINAL (B) 5of the airbag sensor assembly.If an accident occurs while driving, when the frontal impact exceeds a set level, the current from the TERMINAL (B) 5 of theairbag sensor assembly flows to TERMINALS (B) 14, (B) 16, (B) 10, (B) 8, (A) 2 and (C) 5 of the airbag sensor assembly tothe airbag squibs and the pretensioners to TERMINALS (B) 13, (B) 17, (B) 11, (B) 7, (A) 1 and (C) 6 of the airbag sensorassembly to TERMINAL (B) 20, (B) 27 or BODY GROUND to GROUND, so that the current flows to the front airbag squibsand the pretensioners, and causes them to operate.When the side impact also exceeds a set level, the current from the TERMINAL (B) 5 of the airbag sensor assembly flows toTERMINALS (A) 6 and (C) 1 of the airbag sensor assembly to the side airbag squibs to TERMINALS (A) 5 and (C) 2 of theairbag sensor assembly to TERMINAL (B) 20, (B) 27 or BODY GROUND to GROUND, causing side airbag squibs tooperate.The airbag stored inside the steering wheel pad is instantaneously expanded to soften the shock to the driver.The airbag stored inside the passenger’s instrument panel is instantaneously expanded to soften the shock to the frontpassenger.Side airbags are instantaneously expanded to soften the shock of side to the driver and front passenger.The pretensioners make sure of the seat belt restrainability.
: Parts Location
Code See Page Code See Page Code See Page
A5 32 B6 34 J7 35
A6 32 B7 34 P12 37
A12 A 34 C9 34 P13 37
A13 B 34 D1 34 S6 35
A14 C 34 E6 34 S7 35
A15 34 I10 35 S10 37
A16 34 J6 35 S11 37
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IG
IH 25
IIInstrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IJInstrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IK
IL 24
IM
1A 22 Engine Wire and Engine Room J/B (Engine Compartment Left)
3A28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3B28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA140 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA440 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IG1 42 Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)
System Outline
2004 COROLLA (EWD533U)
164
SRS
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I6 42 Instrument Panel No.3 Wire
2004 COROLLA (EWD533U)
165
Memo
2004 COROLLA (EWD533U)
166
Shift Lock
Shift LockSolenoid
10AECU–IG
IF9
3A11
3A16
3B5
7 3B
3C
3C10
13
IC
IL1
5
S 9
15ASTOP
From Power Source System (See Page 48)
IC14
IG
A
B–W
R–W
G–W
G–W
G–W
B–W
W–B
W–B
1 5 3
E IG STP
SLS+ SLS–
S 5J 7
1
2
JunctionConnector Shift Lock Control ECU
StopLight SW
2004 COROLLA (EWD533U)
167
When the ignition SW is turned to ON position, the current from the ECU–IG fuse flows to TERMINAL 5 of the shift lockcontrol ECU.
Shift Lock MechanismWith the ignition SW at ON position, when a signal that the brake pedal is depressed (Stop light SW on) and a signal that theshift lever is put in P position is input to the ECU, the ECU operates and the current flows from TERMINAL 5 of the ECU toTERMINAL SLS+ of the shift lock solenoid to TERMINAL SLS– to TERMINAL 1 of the ECU to GROUND. This causes theshift lock solenoid to turn on (Plate stopper disengages) and the shift lever can shift into position other than P.
S5 Shift Lock Control ECU5–Ground : Approx. 12 volts with the ignition SW at ON position1–Ground : Always continuity3–Ground : Approx. 12 volts with the brake pedal depressed
S9 Stop Light SW2–1 : Closed with the brake pedal depressed
: Parts Location
Code See Page Code See Page Code See Page
J7 35 S5 35 S9 35
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IF 25Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A
3B 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3C
( g )
: Ground Points
Code See Page Ground Points Location
IG 40 Right Kick Panel
System Outline
Service Hints
2004 COROLLA (EWD533U)
168
Light Reminder Buzzer and Key Reminder Buzzer
10AGAUGE
IG
15ATAIL
IH7
IL4
IC7
4C19
4C20
OFF
Tail
Head
Ligh
tC
ontr
ol S
W
15ADOME
From Power Source System (See Page 48)
1
IE
A
1
2
A
4B21
4B18
2 5
1 3
3 3
3 3
IL3
ID1
1
17 2 16
4 5 18
15
14
R–W
L–W
L–W
L–W
G
R–W
R–W
W–B
W–B
W–B
L–B
( *2)
3B16
3B22
2
R–W
G ( *4)
G–W ( *4)
G–W ( *3)
G–W
(*3)
G–B
(*3)
G–W
(*3)
G–W
(*3)
G
(*3)
C12
D 2
TAILRelay
Buzzer
U 1
D 4
J 6
C 9
* 1 : w/ Door Lock Control* 2 : w/o Door Lock Control* 3 : USA* 4 : Canada
2
1
4A15
4A14
L–B
(*1)
L–B
(*1)
I 4
13
10
Combination Meter
Combination SW
Day
time
Run
ning
Ligh
t R
elay
Door Courtesy SWFront LH
JunctionConnector
UnlockWarning SW
T
TAIL
2004 COROLLA (EWD533U)
169
The current is applied at all times to TERMINAL 5 of the combination meter through the DOME fuse.When the ignition SW is turned to ON position, the current flows to TERMINAL 4 of the combination meter through theGAUGE fuse. When the light control SW is turned to Tail or Head position, current is applied to TERMINAL 18 of thecombination meter through the TAIL fuse via the TAIL relay (USA) or the light control SW (Canada).
1. Light Reminder SystemWhen the light control SW is in Tail or Head position, the ignition SW turned to OFF from ON position, and the driver’s dooropened (Door courtesy SW on), the current flows to TERMINAL 4 of the combination meter stops. As a result, thecombination meter is activated and current flows from TERMINAL 5 of the combination meter to TERMINAL 2 to GROUND,the buzzer in the combination meter goes on to remind the light is lighting up.
2. Key Reminder SystemWhen the driver door is opened with the ignition SW off and ignition key remaining in the key cylinder (Unlock warning SWon), a signal is input from the unlock warning SW to TERMINAL 16 of the combination meter, and from the door courtesy SWfront LH to TERMINAL 17 of the combination meter. As a result, the buzzer in the combination meter goes on and warns thedriver that the key is remaining in the key cylinder.
C9 Combination Meter4–Ground : Approx. 12 volts with the ignition SW at ON position
18–Ground : Approx. 12 volts with the light control SW at Tail or Head position17–Ground : Continuity with the driver’s door open
2–Ground : Always continuity
D4 Door Courtesy SW Front LH1–Ground : Closed with the driver’s door open
U1 Unlock Warning SW2–1 : Closed with the ignition key in cylinder
: Parts Location
Code See Page Code See Page Code See Page
C9 34 D2 34 J6 35
C12 34 D4 36 U1 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID 25 Floor Wire and Instrument Panel J/B (Lower Finish Panel)
IG25
IH25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24
( )
3B 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4A
4B 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C
( )
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
System Outline
Service Hints
2004 COROLLA (EWD533U)
170
Light Reminder Buzzer and Key Reminder Buzzer
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I4 42 Instrument Panel Wire
2004 COROLLA (EWD533U)
171
Memo
2004 COROLLA (EWD533U)
172
Seat Belt Warning
SeatBelt
10AGAUGE
IG2
15ADOME
From Power Source System (See Page 48)
1
3B22 IC7
3B16 IL4
4C19
4C20
IG13 IG11
IG14
IG12
IG
A
3 3
1
1
1211
4 5
1
II25
C
C
EB
BR
BR
BR
W–B
W–B
W–BW
–B
W–B
L–W
G–Y
G–Y
L–W
W–B
R–W
L–W
L–W
L–W
R–W
R–W
W–B
B 7
B 6
J 7
J 3
C 9
1
2
3A15 3A14 3A11
Buc
kle
SW
LH
Buc
kle
SW
RH
Combination Meter
JunctionConnector
JunctionConnector
3B11
3
1
4B18
4B21
IE
A
BR
BR
26
PA
SS
EN
GE
R
R–W
L
JunctionConnector
J 6
F 7
Fron
t P
asse
nger
Sea
t Bel
tW
arni
ng L
ight
2 4
B
Occ
upan
t Det
ectio
n S
enso
r
Buc
kle
SW
Occ
upan
tD
etec
tion
Sen
sor
2004 COROLLA (EWD533U)
173
Current is always applied from the DOME fuse to TERMINAL 5 of the combination meter. When the ignition SW is turned toON position, the current from the GAUGE fuse flows to TERMINAL 4 of the combination meter and flows TERMINAL 1 of thefront passenger seat belt warning light.
Seat Belt Warning SystemWhen the ignition SW turned on, a signal is input to the combination meter. To determine whether the driver has fastened theseat belt, a signal is input from the buckle SW LH to TERMINAL 12 of the combination meter. When the seat belt is notfastened, the seat belt warning light in the combination meter blinks, and emits a warning sound.In addition, the front passenger is recognized by a sensor (Occupant detection sensor) is installed in the front passengerseat, and determines whether the seat belt is fastened. When not fastened, the signals from the occupant detection sensoris input to TERMINAL 11 of the combination meter, and the front passenger seat belt warning light blinks.
B6 Buckle SW LH3–1 : Open with the driver’s seat belt in use
C9 Combination Meter5–Ground : Always approx. 12 volts4–Ground : Approx. 12 volts with the ignition SW at ON position1–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
B6 34 F7 35 J7 35
B7 34 J3 35
C9 34 J6 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IG 25Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3B28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IG1 42 Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)
II2 42 Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code See Page Ground Points Location
EB 38 Left Side of the Cylinder Head
IE 40 Behind the Combination Meter
IG 40 Right Kick Panel
System Outline
Service Hints
2004 COROLLA (EWD533U)
174
Rear Window Defogger
10AGAUGE
IG2
40ADEFOG
From Power Source System (See Page 48)
1 3
2 5
IL10
IE
IM4
ID18
B 5
1
BJ
5 4
2
IG D
E
B
B
BB B
B
W–B
R15(A), R16(B) N 2
DEFRelay
R 5
A1
B1
1
2
3B22
3B14
R–W
R–W
Rear Window Defogger SW
Rear WindowDefogger
Noise Filter(Rear Window Defogger)
2004 COROLLA (EWD533U)
175
DEF Relay5–3 : Closed with the ignition SW at ON position and the rear window defogger SW on
: Parts Location
Code See Page Code See Page Code See Page
N2 37 R15 A 37
R5 35 R16 B 37
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IG 25
IL24
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IM24
( )
3B 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
ID1 42 Instrument Panel Wire and Floor Wire (Left Kick Panel)
: Ground Points
Code See Page Ground Points Location
IE 40 Behind the Combination Meter
BJ 44 Under the Right Quarter Pillar
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
B5 44 Floor Wire
Service Hints
2004 COROLLA (EWD533U)
176
Radio and Player
15ADOME
From Power Source System (See Page 48)
1
IC7
IL4
A4
A7 A2 A6 A1 A5
+B ANT+
GND FL+ FL– FR+ FR–
A8
1
L–W
B
BR
P V LG L
P( *
2)
V( *
2)
LG( *
2)
L(*2
)
LG ( *1) L
( *1)
L(*1
)
LG( *
1)
P( *
1)
V( *
1)
P V
IF
R 3(A), R 4(B)
A17
T 4 T 5
F 9F 8
* 1 : w/ Tweeter* 2 : w/o Tweeter
IC24 IC23 IJ14 IJ13
1 2
1 2 21
21
4C20
4C17
L–W
L–W
1
2
Antenna Amplifier
Front DoorSpeaker LH
Front DoorSpeaker RH
Radio and Player
Tweeter LH Tweeter RH
(*1)
( *1)
BE11 BE12 BF11 BF12
LG( *
1)
L(*1
)
L(*1
)
LG( *
1)
2004 COROLLA (EWD533U)
177
15ACIG
From Power Source System (See Page 48)
IF8
3A10
3A7
A3
B2 B6 B1 B3
ACC
RL+ RL– RR+ RR–
R 3(A), R 4(B)
GR
GR
B Y R WWRYB
R13 R14
ID12 ID16 ID11 ID15
1 12 2
Radio and Player
Rear Speaker LH Rear Speaker RH
2004 COROLLA (EWD533U)
178
Radio and Player
R3 (A) Radio and Player(A) 4–Ground : Always approx. 12 volts(A) 3–Ground : Approx. 12 volts with the ignition SW at ACC or ON position(A) 7–Ground : Always continuity
: Parts Location
Code See Page Code See Page Code See Page
A17 34 R3 A 35 R14 37
F8 36 R4 B 35 T4 37
F9 36 R13 37 T5 37
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IF 25Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4C 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IC2 40 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
ID1 42 Instrument Panel Wire and Floor Wire (Left Kick Panel)
IJ1 42 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
BE1 44 Speaker Tweeter LH Wire and Front Door LH Wire (Inside of the Front Door LH)
BF1 44 Speaker Tweeter RH Wire and Front Door RH Wire (Inside of the Front Door RH)
: Ground Points
Code See Page Ground Points Location
IF 40 Behind the Combination Meter
Service Hints
2004 COROLLA (EWD533U)
179
Memo
2004 COROLLA (EWD533U)
180
Combination Meter
Spe
edom
eter
Doo
r
Hig
h B
eam
5 6AM2 IG2
ST2
15AAM2
B–W
30AMAIN
FL MAIN2. 0L
Battery
15ADOME
1 1A
IM3IC7
IM64 IL
1 1
10AGAUGE
IG2
3B22
3B20
3B16
II214
AB
BC
1
L–W B
L–W
B–R
B
R–W
( w/o
AB
S)
1 1
2 IA4
B–R
22
I10
R–W
( w/o
AB
S)
( w/o
AB
S)
R–W
R–W
J 4(A), J 5(B)
V 1
10AHEAD RHUPR
From Power Source System (See Page 48)
1
R
2
1
IA66
14
R
5
L–W
4C19
4C20
L–W
R
20
R–W
17
Y–R
8
Doo
r C
ourt
esy
SW
Fro
nt R
H,
Rea
r LH
, R
H
Inte
grat
ion
Rel
ayD
oor
Cou
rtes
y S
W F
ront
LH
Eng
ine
Con
trol
Mod
ule
R–W
IE
AA
2 3W–G
(w/o ABS)BR
(w/o ABS)
W–B
W–B
B–W
R–W
13
W–B
W–B
C 9
J 6
Combination Meter
Ignition SW
JunctionConnector
Junc
tion
Con
nect
or
Vehicle Speed Sensor(Combination Meter)
2004 COROLLA (EWD533U)
181
Out Side Temp. ODO/TRIP
Buzzer
Tac
hom
eter
Fue
l
Tem
p.
Fuel
ODO/TRIP
4C9 4C7
4C8
10
V–W
V–W
V–W
Eng
ine
Con
trol
Mod
ule
Cru
ise
Con
trol
EC
U
II2
IA614
I 2
9
AC
BC BC
II25
EB
1
W–G
W–G
BR
BR
BR
BR
W–G
(w/o ABS)
W–G
( w/ A
BS
)
BR
( w/o
AB
S)
J 2(
A) ,
J 3
( B)
Ski
d C
ontr
olE
CU
with
Act
uato
r
4
B
19
L–B
16
G–Y
12
L–W
11
Eng
ine
Con
trol
Mod
ule
Unl
ock
War
ning
SW
Buc
kle
SW
LH
Buc
kle
SW
RH
3
2
ID25ID213
22 7
BR Y
BR Y
F10
4
R–W
R–W
W–G
(w/o ABS)BR
(w/o ABS)W–B
W–B
B–W B–W
C 9Combination Meter
Fuel
Sen
derJu
nctio
n C
onne
ctor
( w/ A
BS
)
2004 COROLLA (EWD533U)
182
Combination Meter
Tur
n R
H
Tur
n LH
Mal
func
tion
Indi
cato
r La
mp
O/D
OFF
Cha
rge
CR
UIS
E
Sea
tB
elt
Was
her
Leve
l
6 24 25
Turn SignalFlasher Relay
L
G–B
G–Y
32
B–O
IA63 IA610
2
1
26 30
B B–L
B B–L
A 7 Eng
ine
Con
trol M
odul
e
Gen
erat
or
31 33 3
Y
R–Y LG
23C
ruis
e C
ontr
ol E
CU
G–R
B–W
4B18
4B21
2
W–B
W–B
2
1
EA
IA613
34
W 1
L–W
L–W
W–B
C 9
Fron
t P
asse
nger
Sea
tB
elt W
arni
ng L
ight
IK8
IL5
Am
bien
t Tem
p.
Sen
sor
Combination Meter
Was
her
Leve
l Sen
sor
( Can
ada)
( Can
ada)
( Can
ada)
2004 COROLLA (EWD533U)
183
Oil
Pre
ssur
e
AB
S
Bra
ke
SR
S
Illum
inat
ion
18
GC
ombi
natio
n S
W (
Can
ada)
TAIL
Rel
ay (
US
A)
II23
1
21O
1
WW
IA65 IA516
EA
IA517
2
1
ED
IA515
37 36 35
B
B B
B 2
J 1
E 1
W–R R
W–B
( w/o
AB
S)
W–B
( w/o
AB
S)
W–B
R–W
( w/o
AB
S)
R–W
(w/o ABS)
R–W
(w/o ABS)
R–W
R–W
W–B
( w/o
AB
S)
( w/ A
BS
)
Ski
d C
ontro
lE
CU
with
Act
uato
r
Ski
d C
ontro
lE
CU
with
Act
uato
r
R–W
(w/o ABS)
28
W–R
Rhe
osta
t
39
B–Y
Airbag SensorAssembly
C 9
Daytime RunningLight Relay
W–R R
Brake Fluid LevelWarning SW
Combination Meter
JunctionConnector
Oil
Pre
ssur
e S
W
( w/ A
BS
)
( w/ A
BS
)
2004 COROLLA (EWD533U)
184
Combination Meter
B2 Brake Fluid Level Warning SW1–2 : Closed with the float down
C9 Combination Meter4, 32–Ground : Approx. 12 volts with the ignition SW at ON position
1, 13, 36, 37–Ground : Always continuity5–Ground : Always approx. 12 volts
F10 Fuel Sender2–3 : Approx. 4 Ω at fuel full
Approx. 107 Ω at fuel empty
O1 Oil Pressure SW1–Ground : Opened with the oil pressure above approx. 19.61 kpa (2.84 psi, 0.2 kgf/cm2)
: Parts Location
Code See Page Code See Page Code See Page
A7 32 J1 33 J6 35
B2 32 J2 A 35 O1 33
C9 34 J3 B 35 V1 33
F10 36 J4 A 35 W1 33
I10 35 J5 B 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IG 25
IKInstrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IM
1A 22 Engine Wire and Engine Room J/B (Engine Compartment Left)
3B 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
4C30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA4
IA5 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA6
g ( )
ID2 42 Instrument Panel Wire and Floor Wire (Left Kick Panel)
II2 42 Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code See Page Ground Points Location
EA 38 Front Right Fender
EB 38 Left Side of the Cylinder Head
ED 38 Front Left Suspension Tower
IE 40 Behind the Combination Meter
Service Hints
2004 COROLLA (EWD533U)
185
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
E1 38 Engine Room Main Wire I2 42 Instrument Panel Wire
2004 COROLLA (EWD533U)
186
Radiator Fan
30ARDIFAN
From Power Source System (See Page 48)
1
10AECU–IG
IC13
3 2
5 1
1 1
1 1
IA57
IA56
2 5
1 3
4
1 1
1 1
2
3
E 4
EA ED
1
2
1
1
2
LG–B
LGLG
LG–B
LG–B
W–B
L–W
W–B
W–B
W–B
W–B
B–R
W–R
LG–B
B–WB–W
B–W W–R
E 6
R 1
P 2
R 2
Sin
gle
FANNO. 1Relay
FANNO. 2Relay
1
2
Engine ControlModule
PressureSW
RadiatorFan Motor
Rad
iato
rFa
n R
esis
tor
6
CFFAN
7
M
2004 COROLLA (EWD533U)
187
The current is applied at all times through the RDI FAN fuse to TERMINAL 5 of the FAN NO.1 relay.When the ignition SW is turned on, the current flows through the ECU–IG fuse to FAN NO.1 relay (Coil side) to TERMINAL 6of the engine control module. At the same time as this current flow, the current from ECU–IG fuse flows to the FAN NO.2relay (Coil side) to TERMINAL 3 of the pressure SW.
1. Low Speed OperationWhen the A/C system is operating, the FAN NO.1 Relay is turned on. As a result, the current flows from the RDI FAN fuse toFAN NO.1 relay (Point side) to TERMINAL 2 of the radiator fan motor to TERMINAL 1 to TERMINAL 3 of the FAN NO.2 relayto TERMINAL 4 to TERMINAL 2 of the radiator fan resistor to TERMINAL 1 to GROUND, and the radiator fan motor rotatesat low speed.
2. High Speed OperationWhen the pressure SW is on or engine control module operated, the FAN NO.1 and NO.2 relay is turned on. As a result, thecurrent flows from the RDI FAN fuse to FAN NO.1 relay (Point side) to radiator fan motor to TERMINAL 3 of the FAN NO.2Relay to TERMINAL 5 to GROUND, and the radiator fan motor rotates at high speed.
P2 Pressure SW3–2 : Open below approx. 12.5 kgf/cm2 (178 psi, 1225 kpa)
Close above approx. 15.5 kgf/cm2 (220 psi, 1520 kpa)
: Parts Location
Code See Page Code See Page Code See Page
E6 34 R1 33
P2 33 R2 33
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA5 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
: Ground Points
Code See Page Ground Points Location
EA 38 Front Right Fender
ED 38 Front Left Suspension Tower
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
E4 38 Engine Room Main Wire
System Outline
Service Hints
2004 COROLLA (EWD533U)
188
Air Conditioning
B
L–W
OFFLO
B
B
L–W
B–W
R
B–W
B–W
W–B
W–B
3 3
W–B
3 3 3
10AGAUGE
IG2
3B12 3B13
3B183B22
40AHEATER
From Power Source System (See Page 48)
IM2
10AA/C
IM5
IC3 IF7
IG
IH11 IH12 IH16 IH15
W–B
L–W
B
R–W
W–B
R–W
B–W
B
R–W
HTR
Rel
ay
HI M2 M1
1 3
2 5
AA
A
R–W
L–W B
Blower Resistor
B 5
J 7
B 3
4 1 2
6
5
1
2
R–W
R–W
B–W
2
1
4
I 7
A
Blo
wer
Mot
or
Blower SW
JunctionConnector
B 4
B–W L–
B
R
W–B
1 3 2 4M
2004 COROLLA (EWD533U)
189
L–W
BR
YY
W–B
BR
BR
B–L
G–W Y
L–W
G–W
W–B
B–W Y–B
Y–B
B–W
1 1
Dua
l
1 1
EA14
C33 C31 C2
C32 A28A13
EA18
EA
IH13
II21
IH14
F
F
IA67
3A11
3A20
W–B
R–W
B
L–W
W–B
5
3 2
5 1
2 1
R–W
E2
E 3(A), E 5(B)
P 2
A 1
A/C
The
rmis
tor
M/G
CLT
Rel
ay
9 86 7 4 3
4
1
1
A/C
Mag
netic
Clu
tch
Engine Control Module
Pre
ssur
e S
W
M
FRS
RE
C
OnA/C
SW OffFRS
REC
Air InletControl SW
L–W
A/C SWA 8
Air Inlet Control SWDefroster Mode Detection SW
Air
Inle
t Con
trol
Ser
vo M
otor
A11
IG GNDFRS REC A/CAIND
Junc
tion
Con
nect
or
J 3
FACE
B/L
FOOT
F/D
DEF
Def
rost
er M
ode
Det
ectio
n S
W
2
B
PRS THR
ACMGACLD A/CS
BB
2004 COROLLA (EWD533U)
190
Air Conditioning
Current is applied at all times through the HEATER fuse to TERMINAL 5 of the HTR relay.When the ignition SW is turned on, the current flows through the GAUGE fuse to TERMINAL 2 of the HTR relay toTERMINAL 1 to TERMINAL 6 of the blower SW.
1. Heater Blower Motor Operation∗ Low speed operation
When the blower SW is moved to LO position, the current flows to TERMINAL 6 of the blower SW to TERMINAL 5 toGROUND, causing the HTR relay to turn on. This causes the current flows from the HEATER fuse to TERMINAL 5 ofthe HTR relay to TERMINAL 3 to the blower motor to the blower resistor to GROUND, rotating the blower motor at lowspeed.
∗ Medium speed operation (Operation at M1, M2)When the blower SW is moved to M1 position, the current flows to TERMINAL 6 of the blower SW to TERMINAL 5 toGROUND, causing the HTR relay to turn on. This causes the current flows from the HEATER fuse to TERMINAL 5 ofthe HTR relay to TERMINAL 3 to the blower motor to the blower resistor to TERMINAL 2 of the blower SW toTERMINAL 5 to GROUND. At this time, the blower resistance of the blower resistor is smaller than at low speed, so theblower motor rotates at medium low speed.When the blower SW is moved to M2 position, the current flows through the HTR relay to the blower motor to the blowerresistor to TERMINAL 1 of the blower SW to TERMINAL 5 to GROUND. At this time, resistance of the blower resistor issmaller than at M1 position, so the blower motor rotates at medium high speed.
∗ High speed operationWhen the blower SW is moved to HI position, the current flows to TERMINAL 6 of the blower SW to TERMINAL 5 toGROUND, causing the HTR relay to turn on.This causes the current flows from the HEATER fuse to TERMINAL 5 of the HTR relay to TERMINAL 3 to the blowermotor to TERMINAL 4 of the blower SW to TERMINAL 5 to GROUND, rotating the blower motor at high speed.
2. Air Conditioning OperationWhen the blower SW is set on, the current flows from the HTR fuse to the HTR relay (Point side) to the A/C fuse to theTERMINAL 2 of the A/C SW. If the A/C SW is turned on, at this time a signal is input into the engine control module. Thisactivates the engine control module and M/G CLT relay. So that current flows from the A/C fuse to M/G CLT relay (Point side)to A/C magnetic clutch. Causing the compressor to operate.
HTR Relay5–3 : Closed with the ignition SW at ON position and the blower SW on
P2 Pressure SW1–4 : Open with the refrigerant pressure at less than approx. 2.0 kgf/cm2 (28.4 psi, 196.1 kpa) or more than
approx. 32.0 kgf/cm2 (455 psi, 3138.1 kpa)
: Parts Location
Code See Page Code See Page Code See Page
A1 32 B3 34 E5 B 34
A8 34 B4 34 J3 35
A9 34 B5 34 J7 35
A11 34 E3 A 34 P2 33
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
System Outline
Service Hints
2004 COROLLA (EWD533U)
191
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IC 25 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IF25
IG25
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IM 24
( )
3A28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3B28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 38 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)
IA6 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IH1 42 Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit)
II2 42 Engine Wire and Instrument Panel Wire (Blower Unit RH)
: Ground Points
Code See Page Ground Points Location
EA 38 Front Right Fender
IG 40 Right Kick Panel
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I7 42 Instrument Panel Wire
2004 COROLLA (EWD533U)
192
Heater
10AGAUGE
From Power Source System (See Page 48)
IG2
40AHEATER
IM2
3B22
3B12
1 3
2 5
4
3 3 3
3 3
R–W
B–W
R–W
OFFLOM1M2HI
IG
A AA
4
6
1 2
5
IH11 IH12 IH16 IH15
2
1
B 5
J 7
B 3
B–W
L–W
R
W–BB
L–W
W–B
W–B
W–B
B–W
B–W
L–W
W–B
Blower Resistor
HTRRelay
2
1
I 7
20 3A
11 3A
G–W
W–B
8
W–B
L–W
9
3B13
3B18
R–W
6 7
A
B
R–W
R–W
R–W
B–W
W–B
Blo
wer
Mot
or
Blower SW
JunctionConnector
12
5
M
FRS
RE
C
IG FRS RSC GND
FRS
REC
Air InletControl SW
Air Inlet Control SWA 8
Air
Inle
t C
ontr
olS
ervo
Mot
or
A11
B 4
M
1 3 2 4
B–W L–
B R
W–B
2004 COROLLA (EWD533U)
193
HTR Relay5–3 : Closed with the ignition SW at ON position and the blower SW on
: Parts Location
Code See Page Code See Page Code See Page
A8 34 B3 34 B5 34
A11 34 B4 34 J7 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IG 25Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IM 24Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3A28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
3B28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IH1 42 Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit)
: Ground Points
Code See Page Ground Points Location
IG 40 Right Kick Panel
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
I7 42 Instrument Panel Wire
Service Hints
2004 COROLLA (EWD533U)
194
I GROUND POINT
(LP)
(EBD)
(GND1)
(GND2)
W–B
W–B
W–B
W–B
W–B
W–B ED
CombinationMeter
ABS Actuatorwith ECU
Front Fog Light RHW–B
W–BHeadlight RH (High)
Front Wiper MotorW–B
BR
FAN NO. 2 Relay
EFI Relay
Front Parking LightLHFront Turn SignalLight LH
Daytime RunningLight Relay
W–B
Front Fog LightLH
EA
1
1E 4
E 4
E 4
Headlight LH (High)
Brake Fluid LevelWarning SW
Radiator FanResistor
E 4
IA43
E 4
E 4
E 1
IA6
5
IA516
E 1
E 1
Pressure SW
(–S)
(CUT–)
W–R
R
Front Parking LightRHFront Turn SignalLight RH
E 1
E 1
E 1
E 1
E 1
W–BWasher Level Sensor E 1
W–B
W–B W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
AC
AA
BB
Engine ControlModule
W–B
W–B(E01)
(E02)
BB
(E1)
(E03)
EC
Ignition Coil andIgniter No. 1
Ignition Coil andIgniter No. 2
Ignition Coil andIgniter No. 3
W–B
Ignition Coil andIgniter No. 4
E 2
E 2
W–B
W–B
W–B
W–B
BRHeated Oxygen Sensor(Bank 1 Sensor 1)
AA
AA
EB
AA
Idle Air ControlValve
BRAB II1
1
CA
II2
8BRHeated Oxygen Sensor(Bank 1 Sensor 2)
BR
W–B
W–B W–B
BR
CombinationMeter
(ET)
Vehicle Speed Sensor(Combination Meter)
II25
AC
BC
BC
BR
BR
BR
BR
BRJ 4(A), J 5(B)
J 2(A), J 3(B)
W–B
BR
W–B
W–B
W–B
(SG) Data LinkConnector 3
W–B
Junction Connector
JunctionConnector
2004 COROLLA (EWD533U)
195
I
P–POINT Relay
Buckle SW RHOccupantDetection Sensor
Buckle SW LHSeat Position Sensor
Shift Lock ControlECU
O/D Main SW
Clock
Air Inlet Control SW
Hazard SW
3 3A
12
3A
14
3A
15
3A16
3A
17
3A18
3A
20
3A
21
3A11
4B21
4B
18
4B17
4B
16
4B
15
4B
14
4B
13
4B12
4B
11
19
4B
22
4B
Combination SW
Cruise ControlActuator
Cruise ControlECU
Turn SignalFlasher Relay
Rheostat
Remote ControlMirror SW
IG
HTR Relay
Blower Resistor
Blower SW
IH1
5
3
IF4
IE
1
Moon Roof ControlRelay and SW
(L)
(GND)
W–B
W–B
(E)
(E)
Moon Roof Motorand Limit SW
W–B
W–B
B 2
B 2
B 2
Integration Relay
ST Relay
IG1 Relay
Noise Filter
II3
II
10
IH10
B 3Door Lock ControlSW Front RH
Door Key Lock andUnlock SW Front RHDoor Lock MotorFront RHDoor Unlock DetectionSW Front RH
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B W–B
W–BW–B
W–B
W–B
W–B
A
A
A
AA
A
W–B
J 7
IA5
3W–B
IG1
4
IG1
2
W–B
W–B
(E2)
(E1)
Airbag SensorAssembly
(EP) CombinationMeter
(E) Combination SW
(CG) Data LinkConnector 3
(T) Combination SW
IJ21
W–B
W–B
Engine ControlModule
W–BW–B AAII2
10 W–B
Inner MirrorPersonal Light
A
B 1
W–B
Personal Light
W–BW–B
B
B(*1 *2)
(*1 *3)
* 1 : w/ Automatic Glare–Resistant EC Mirror* 2 : w/ Moon Roof
19
3ASecurityIndicator
TVIP ECU Glass BreakageSensor ECU
I 8
I 8W–B
W–B W–B
W–B W–B
W–B
W–B
W–B
Junc
tion
Con
nect
or
(EC)
P/W Relay
(ECC)
(USA)
* 3 : w/o Moon Roof
2004 COROLLA (EWD533U)
196
I GROUND POINT
IE
(E)
(E)
Power WindowMaster SW
B 4
IC1
6Door Key Lock andUnlock SW Front LHDoor Lock MotorFront LHDoor Unlock DetectionSW Front LH
B 4
Door Lock ControlSW Front LH
Unlock Warning SW
Cigarette LighterPower Outlet (Front)
Power Outlet (Rear)
Rear Window DefoggerSW
W–B
W–B
W–B
W–B W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
A
A
A
A
A
A
A
A
W–B
W–B
J 6
(EW) Combination SW
(EL) Combination SW
IF1
2W–B
(–) CombinationMeter
W–B
J 8(A), J 9(B)
BI
AA
A
Rear CombinationLight RH
Rear CombinationLight LH
Door Control ReceiverAA
Rear CombinationLight RH B
AB
W–B
W–B
High Mounted StopLight
License Plate LightRH
BA
Rear CombinationLight LH
W–B
W–B
Radio and Player
W–BFuel Pump
W–B
BH
License Plate LightLH
IF
W–B
W–B
AA
W–B
AA
BRW
–B
AW–B
W–B
W–B
W–B
Rear WindowDefogger
BJ
B
JunctionConnector
Junction Connector
* 4 : w/ Power Window* 5 : w/o Power Window
(*4)
(*4)
( *4)
( *4)
(* 5)(*5)
(*5)
2004 COROLLA (EWD533U)
197
I
: Parts Location
Code See Page Code See Page Code See Page
J2 A 35 J5 B 35 J8 A 36
J3 B 35 J6 35 J9 B 36
J4 A 35 J7 35
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
3 28 RH R/B (Right Side of the Instrument Panel Reinforcement)
: Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
IE 25 Roof Wire and Instrument Panel J/B (Lower Finish Panel)
IF
IH 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
II
( )
3A 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)
4B 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter)
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IA4
IA5 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)
IA6
g ( )
IC1 40 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IF1 42 Console Box Wire and Instrument Panel Wire (Under the Instrument Panel Center)
IG1 42 Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)
IH1 42 Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit)
II142 Engine Wire and Instrument Panel Wire (Blower Unit RH)
II242 Engine Wire and Instrument Panel Wire (Blower Unit RH)
IJ2 42 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: Ground Points
Code See Page Ground Points Location
EA 38 Front Right Fender
EB38 Left Side of the Cylinder Head
EC38 Left Side of the Cylinder Head
ED 38 Front Left Suspension Tower
IE40 Behind the Combination Meter
IF40 Behind the Combination Meter
IG 40 Right Kick Panel
BH 44 Under the Left Quarter Pillar
BI 44 Lower Back Panel
BJ 44 Under the Right Quarter Pillar
: Splice Points
Code See Page Wire Harness with Splice Points Code See Page Wire Harness with Splice Points
E1 38 Engine Room Main Wire B144 Roof Wire
E2 38 Engine Wire B244 Roof Wire
E4 38 Engine Room Main Wire B3 44 Front Door RH Wire
I8 42 Instrument Panel Wire B4 44 Front Door LH Wire
2004 COROLLA (EWD533U)
198
J POWER SOURCE (Current Flow Chart)
2004 COROLLA (EWD533U)
199
J
2004 COROLLA (EWD533U)
200
J POWER SOURCE (Current Flow Chart)
Engine Room R/B,Engine Room J/B (See Page 22)Fuse System Page
5A ALT–S Charging 56
10A HAZARD Turn Signal and Hazard Warning Light 78
10A HEAD LH LWR Headlight 70
10A HEAD LH UPR Headlight 70
10A HEAD RH LWR Headlight 70
10A HEAD RH UPRCombination Meter
Headlight
180
70
10A HORN
Horn
TVIP System
Wireless Door Lock Control
102
134
126
15A DOME
ABS
Clock
Combination Meter
Cruise Control
Headlight
Illumination
Interior Light
Light Reminder Buzzer and Key Reminder Buzzer
Radio and Player
Seat Belt Warning
SRS
TVIP System
Wireless Door Lock Control
154
106
180
148
70
86
90
168
176
172
159
134
126
15A EFIElectronically Controlled Transmission
Engine Control
142
58
15A FOG Fog Light 76
30A ABS NO.1 ABS 154
30A MAIN
ABS
Charging
Combination Meter
Cruise Control
Electronically Controlled Transmission
Engine Control
SRS
Starting and Ignition
TVIP System
154
56
180
148
142
58
159
52
134
30A RDI FAN Radiator Fan 186
40A ABS NO.2 ABS 154
40A HEAD MAIN
Headlight
TVIP System
Wireless Door Lock Control
70
134
126
∗ These are the page numbers of the first page on which the related system is shown.
2004 COROLLA (EWD533U)
201
J
Fuse System Page
100A ALT
Charging
Illumination
Taillight
56
86
82
Instrument Panel J/B (See Page 24)Fuse System Page
7.5A OBD Engine Control 58
10A A/C Air Conditioning 188
10A ECU–B
Fog Light
Headlight
TVIP System
76
70
134
10A ECU–IG
ABS
Cruise Control
Radiator Fan
Shift Lock
TVIP System
154
148
186
166
134
10A GAUGE
ABS
Air Conditioning
Automatic Glare–Resistant EC Mirror with Compass
Back–Up Light
Charging
Combination Meter
Cruise Control
Electronically Controlled Transmission
Engine Control
Fog Light
Headlight
Heater
Interior Light
Light Reminder Buzzer and Key Reminder Buzzer
Moon Roof
Power Window
Rear Window Defogger
Seat Belt Warning
SRS
Turn Signal and Hazard Warning Light
154
188
112
96
56
180
148
142
58
76
70
192
90
168
140
114
174
172
159
78
10A M–HTR/DEF I–UP Engine Control 58
15A AM2
ABS
Charging
Combination Meter
Cruise Control
Electronically Controlled Transmission
Engine Control
SRS
154
56
180
148
142
58
159
∗ These are the page numbers of the first page on which the related system is shown.
2004 COROLLA (EWD533U)
202
J POWER SOURCE (Current Flow Chart)
Fuse System Page
15A AM2Starting and Ignition
TVIP System
52
134
15A CIG
Cigarette Lighter
Clock
Power Outlet
Radio and Player
Remote Control Mirror
104
106
108
176
110
15A P/POINT Power Outlet 108
15A STOP
ABS
Cruise Control
Electronically Controlled Transmission
Engine Control
Shift Lock
Stop Light
154
148
142
58
166
94
15A TAIL
Clock
Engine Control
Headlight
Illumination
Light Reminder Buzzer and Key Reminder Buzzer
Taillight
106
58
70
86
168
82
15A WASHER Wiper and Washer 98
25A DOOR
Door Lock Control
Interior Light
Wireless Door Lock Control
118
90
126
25A WIPER Wiper and Washer 98
30A POWERMoon Roof
Power Window
140
114
40A DEFOG Rear Window Defogger 174
40A HEATERAir Conditioning
Heater
188
192
∗ These are the page numbers of the first page on which the related system is shown.
2004 COROLLA (EWD533U)
203
Memo
2004 COROLLA (EWD533U)
204
K CONNECTOR LIST
1
GrayA 1
1 2 3 4 5
6 7 8 9
GrayA 2
1 2
GrayA 3
1 2
A 4
1 2
YellowA 5
1 2
YellowA 6
1 2
BlackA 7
10987654321
BlackA 8
1 2
3 4
A10
54321
BlackA11
1 2 3 4 5 6
7 8 9 101112
A B
YellowA12
242523 26222021 2827
1 2 3 4 5 6
7 8 9 1011121314151617
1819
A B
YellowA13
1 2 3 4 5 6
7 8 9 101112
A B
YellowA14
1 2 3 4
YellowA15
1 2 3 4
YellowA16
1
A17
1 2 3 4
A18
1 2
BlackA19
1 2
BlackA20
1 2
GrayB 1
1 2
GrayB 2
1
2
B 3
1 2
3 4
BlackB 4
1 2 3
4 5 6 7 8
B 5
1 2 3
4 5 6
B 6
1 2 3 4
B 7
1 2
GrayC 1
1 2
BrownC 2
1 2
GrayC 3
1 2 3 4
BlackC 4
1
2
C 5
2004 COROLLA (EWD533U)
205
K
1 2
GrayC 6
1 2 3 4
C 7
1 2
C 8
422
321 241
262362
277
288
3010
3111
3212
3313
3515
3616
3717
3818
2995
25 3414
3919
4020
C 9
7 8
1 2
12
4 5 6
9 1110
3
BlackC10
1 2 3 4 5 6 7 8 9 10
BlackC11
1 2 3 4
5 6 7 8 9 10 11 12 13
C12
1 2
C13
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
C14
16 15 14 13 12 11 10 9
8 7 6 5 4 3 2 1
D 1
1 23 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18 19 20
D 2
54321
D 3
1
D 4
1
D 5
1
D 6
1
D 7
1 2 3 4
5 6 7 8 9 10
D 8
1 2 3 4
5 6 7 8 9 10
D 9
1 2
3 4 5 6
D10
6 95 8
14
7
15
4
17
21
1816
3
11 1310 12
D11
1 2
3 4 5 6
D12
2004 COROLLA (EWD533U)
206
K CONNECTOR LIST
1 2 3 4
5 6 7 8 9 10
D13
1 2 3 4
5 6 7 8 9 10
D14
1 2 34 5 6
GrayE 1
21
Dark GrayE 2
1
17
29 3428
1918
98
20
10
21
33
11
76
13 14 15 16
22 23 26
12
432 5
2724 25
30 31 32
E 3
1
19
333231 3528
2320
118 12
34
13
76
15 16 17 18
24 25 26
14
432 5
27
29
21
9
30
22
10
E 4
16
3231 3528
2017
9 10
34
11
65
13 14 15
23 24 26
12
321 4
27
29
18
7
30
19
8
21 22 25
33
E 5
1
17
292827 3126
1918
98
20
10
21
30
11
76
13 14 15 16
22 23 24
12
432 5
25
E 6
1 2
GrayF 1
1 2
GrayF 2
1 2 3
GrayF 3
1 2 3
GrayF 4
1 2 3
BlackF 5
1 2 3
4 5
BlackF 6
1 32
F 7
1
2
F 8
1
2
F 9
1 2 3
4 5
F10
1 2 3
BlackG 1
1
G 2
1 2 34 5 6 7 8
G 3
1 2
BlackH 1
1 2
GrayH 2
1 2
BlackH 3
1 2
GrayH 4
1 2
3 4
Dark GrayH 5
1
BlackH 6
1 2 3 4 5 6
BlackH 7
124 3
Dark GrayH 8
1 2
(Bulb Type) GrayH 9
2004 COROLLA (EWD533U)
207
K
A A A A A A
B B B C C C
A A A A A A
B B B C C C
A A A A A A
B B B C C C
BBAAAC C C D D D B
E
HH
ED
HH
DC
GG
CC
GF
BB
FF
A A
F
2 1
(LED Type) BlackH 9
1 2 3
GrayI 1
1 2 3 4
BrownI 2
1 2 3 4
BrownI 3
1 2 3 4
BrownI 4
1 2 3 4
BrownI 5
1 2
GrayI 6
1 2
GrayI 7
1 2
GrayI 8
1 2
GrayI 9
1 24 5
36
I10
111032 121
15 161413 17
4 5 6 7 8 9
18 19 20 21 22 23 24 25 26
I11
1 2 3 4 5 76
BlackI12
1 32
I13
BBAAAC C C D D D B
BlackJ 1
E
HH
ED
HH
DC
GG
CC
GF
BB
FF
A A
F
J 2 J 3
A A A A A A
B B B C C C
J 4 J 5
A A A AA A A A A A A
J 6
A
A
AA
AAAA
J 7
J 8 J 9 J10
1 2
BlackK 1
1 2
GrayL 1
1 2
GrayL 2
1 2
L 3
1
L 4
54321
BlackM 1
1 2 34 5 6 7 8
M 2
1 2
3 4
5 6
BrownM 3
2004 COROLLA (EWD533U)
208
K CONNECTOR LIST
1 2
GrayN 1
1 2
N 2
1
GrayO 1
1
BlackP 1
12 3
4
GrayP 2
1
BrownP 3
1
2
P 4
1 2 3 4 5
P 5
1 2 3 4 5
P 6
1 2 3 4 5
P 7
1 2
3 4 5 6
P 8
1 2
3 4 5 6
P 9
1 2
3 4 5 6
P10
1 2
3 4 5 6
P11
21
YellowP12
21
YellowP13
21
GrayR 1
21
BlackR 2
1 2 3 4
5 6 7 8 9 10
R 3
1 2
3 4 5 6
R 4
1 2 3 4 5
BlackR 5
1 2 3 4 5 6 7 8 9 10
R 6
1 2 3 4 5 6 7 8
R 7
23 41
R 9
1 2
R10
23 41
R11
1 2
R12
2 1
R13
2 1
R14
1
BlackR15
1
BlackR16
123
R17
2004 COROLLA (EWD533U)
209
K
123
R18
21
2423
3 4 5 6
13
25
161514
26 27 28 313029
17 18 19
987 10 11 12
222120
32 33 34
BlackS 1
1
S 2
1
BlackS 3
1 2 3 4
BlackS 4
54321
S 5
1 2
YellowS 6
1 2
YellowS 7
34
2
1
S 8
1
3
2
4
(*1) BlueS 9
1
3
2
4
(*2) BlackS 9
1 2 3 4
YellowS10
1 2 3 4
YellowS11
1 2 3
BlackT 1
1 2 34 5 6 7 8
BlackT 2
422
321 241
262362
277
288
3010
3111
3212
3313
3515
3616
3717
3818
2995
25 3414
3919
4020
T 3
12
T 4
12
T 5
1 2
BlackU 1
1 2 3
BlackV 1
1 2
BlackV 2
1 2
BlueV 3
1 2 3
BlackV 4
1 2
BlackV 5
1 2
BlackW 1
*1 : w/ Cruise Control*2 : w/o Cruise Control
L PART NUMBER OF CONNECTORS
Code Part Name Part Number Code Part Name Part Number
Note: Not all of the above part numbers of the connector are established for the supply.
2004 COROLLA (EWD533U)210
A 1 A/C Magnetic Clutch 90980–11271
A/T Shift Lever Position SW
A 2 Back–Up Light SW 90980–11784
Park/Neutral Position SW
A 3 ABS Speed Sensor Front LH90980–11003
A 4 ABS Speed Sensor Front RH90980–11003
A 5 Airbag Sensor Front LH90980–11856
A 6 Airbag Sensor Front RH90980–11856
A 7 Ambient Temp. Sensor 90980–11030
A/C SW
A 8 Air Inlet Control SW 90980–12162
Defroster Mode Detection SW
A10A/T Shift Lever Illumination
90980–12211A10O/D Main SW
90980–12211
A11 Air Inlet Control Servo Motor 90980–11909
A12 Airbag Sensor Assembly 90980–11869
A13 Airbag Sensor Assembly 90980–11872
A14 Airbag Sensor Assembly 90980–11867
A15Airbag Squib (Front Passenger AirbagAssembly) 90980–12160
A16 Airbag Squib (Steering Wheel Pad)90980 12160
A17 Antenna Amplifier 90980–10871
A18 Automatic Light Control Sensor 90980–11107
A19 ABS Speed Sensor Rear LH90980–11900
A20 ABS Speed Sensor Rear RH90980–11900
B 1 Back–Up Light SW 90980–11250
B 2 Brake Fluid Level Warning SW 90980–11207
B 3 Blower Motor 90980–10214
B 4 Blower Resistor 90980–11136
B 5 Blower SW 90980–10877
B 6Buckle SW LH
90980–12257B 6Seat Position Sensor
90980–12257
B 7Buckle SW RH
90980–11950B 7Occupant Detection Sensor
90980–11950
C 1 Camshaft Position Sensor 90980–10947
C 2 Camshaft Timing Oil Control Valve (VVT) 90980–11162
C 3 Crankshaft Position Sensor 90980–10947
C 4 Cruise Control Actuator 90980–11150
C 5Cigarette Lighter
90980–10760C 5Power Outlet (Front)
90980–10760
C 6 Cigarette Lighter Illumination 90980–11148
C 7 Clock 90980–11950
C 8 Clutch Start SW 90980–10825
C 9 Combination Meter 90980–12169
C10 Combination SW 90980–12183
C11 Combination SW 90980–12008
C12 Combination SW 90980–12007
C13 Cruise Control Clutch SW 90980–10906
C14 Cruise Control ECU 90980–12094
D 1 Data Link Connector 3 90980–11665
D 2 Daytime Running Light Relay 90980–12034
D 3 Door Control Receiver 90980–11909
D 4 Door Courtesy SW Front LH
D 5 Door Courtesy SW Front RH90980–10871
D 6 Door Courtesy SW Rear LH90980–10871
D 7 Door Courtesy SW Rear RH
Door Key Lock and Unlock SW Front LH
D 8 Door Lock Motor Front LH
Door Unlock Detection SW Front LH90980–12226
Door Key Lock and Unlock SW Front RH90980–12226
D 9 Door Lock Motor Front RH
Door Unlock Detection SW Front RH
D10 Door Lock Control SW Front LH 90980–10797
D11Door Lock Control SW Front LH
90980–12122D11Power Window Master SW
90980–12122
D12 Door Lock Control SW Front RH 90980–10797
D13 Door Lock Motor Rear LH90980–12226
D14 Door Lock Motor Rear RH90980–12226
E 1Electronically Controlled TransmissionSolenoid 90980–10854
E 2 Engine Coolant Temp. Sensor 90980–10737
E 3 Engine Control Module 90980–12144
E 4 Engine Control Module 90980–12145
E 5 Engine Control Module 90980–12146
E 6 Engine Control Module 90980–12142
F 1 Front Fog Light LH90980–11156
F 2 Front Fog Light RH90980–11156
F 3Front Parking Light LH
F 3Front Turn Signal Light LH
90980–11020
F 4Front Parking Light RH
90980–11020
F 4Front Turn Signal Light RH
F 5 Front Washer Motor 90980–10981
F 6 Front Wiper Motor 90980–11599
F 7 Front Passenger Seat Belt Warning Light 90980–11296
F 8 Front Door Speaker LH90980–10935
F 9 Front Door Speaker RH90980–10935
F10Fuel Pump
90980–11077F10Fuel Sender
90980–11077
G 1 Generator 90980–11349
G 2 Generator 90980–09373
G 3 Glass Breakage Sensor ECU 90980–10799
H 1 Headlight LH (High) 90080–98039
H 2 Headlight LH (Low) 90080–98038
H 3 Headlight RH (High) 90080–98039
L
Code Part Name Part Number Code Part Name Part Number
2004 COROLLA (EWD533U)
211
H 4 Headlight RH (Low) 90080–98038
H 5 Heated Oxygen Sensor (Bank 1 Sensor 1) 90980–10869
H 6 Horn 90980–10619
H 7 Hazard SW 90980–10933
H 8 Heated Oxygen Sensor (Bank 1 Sensor 2) 90980–10794
H 9High Mounted Stop Light (Bulb Type) 90980–10860
H 9High Mounted Stop Light (LED Type) 90980–11367
I 1 Idle Air Control Valve 90980–11145
I 2 Ignition Coil and Igniter No.1
I 3 Ignition Coil and Igniter No.290980–11885
I 4 Ignition Coil and Igniter No.390980–11885
I 5 Ignition Coil and Igniter No.4
I 6 Injector No.1
I 7 Injector No.290980–11875
I 8 Injector No.390980–11875
I 9 Injector No.4
I10 Ignition SW 90980–11778
I11 Integration Relay 90980–12203
I12Inner Mirror
90980–11794I12Personal Light
90980–11794
I13 Interior Light 90980–10908
J 1 Junction Connector 90980–10803
J 2 Junction Connector90980–11915
J 3 Junction Connector90980–11915
J 4 Junction Connector90980–11661
J 5 Junction Connector90980–11661
J 6 Junction Connector 90980–11539
J 7 Junction Connector 90980–11686
J 8 Junction Connector90980–11661
J 9 Junction Connector90980–11661
J10 Junction Connector 90980–10803
K 1 Knock Sensor 90980–11875
L 1 License Plate Light LH
L 2 License Plate Light RH 90980–11148
L 3 Luggage Compartment Light
L 4 Luggage Compartment Light SW 90980–11097
M 1 Mass Air Flow Meter 90980–11317
M 2Moon Roof Control Relay and SW
90980–10799M 2Personal Light
90980–10799
M 3 Moon Roof Motor and Limit SW 90980–11011
N 1 Noise Filter (Ignition) 90980–10843
N 2 Noise Filter (Rear Window Defogger) 90980–10825
O 1 Oil Pressure SW 90980–11363
P 1 Power Steering Oil Pressure SW 90980–11428
P 2 Pressure SW 90980–10943
P 3 Parking Brake SW 90980–10871
P 4 Power Outlet (Rear) 90980–10760
P 5 Power Window Control SW Front RH
P 6 Power Window Control SW Rear LH 90980–10789
P 7 Power Window Control SW Rear RH
P 8 Power Window Motor Front LH
P 9 Power Window Motor Front RH90980–10797
P10 Power Window Motor Rear LH90980–10797
P11 Power Window Motor Rear RH
P12 Pretensioner LH90980–12253
P13 Pretensioner RH90980–12253
R 1 Radiator Fan Motor90980–10928
R 2 Radiator Fan Resistor90980–10928
R 3 Radio and Player 90980–10997
R 4 Radio and Player 90980–10996
R 5 Rear Window Defogger SW 90980–10789
R 6 Remote Control Mirror SW 90980–11657
R 7 Rheostat 90980–12217
R 9 Rear Combination Light LH 90980–10795
R10 Rear Combination Light LH 90980–11148
R11 Rear Combination Light RH 90980–10795
R12 Rear Combination Light RH 90980–11148
R13 Rear Speaker LH90980–11299
R14 Rear Speaker RH90980–11299
R15 Rear Window Defogger 90980–10914
R16 Rear Window Defogger 90980–10913
R17 Remote Control Mirror LH90980–10907
R18 Remote Control Mirror RH90980–10907
S 1 Skid Control ECU with Actuator 82824–12300
S 2 Starter 90980–09463
S 3 Starter 90980–11400
S 4 Security Indicator 90980–11013
S 5 Shift Lock Control ECU 90980–11909
S 6 Side Airbag Squib LH90980–11864
S 7 Side Airbag Squib RH90980–11864
S 8 Starter Cut Relay 82660–0C010
S 9 Stop Light SW 90980–11118
S10 Side Airbag Sensor LH90980–12225
S11 Side Airbag Sensor RH90980–12225
T 1 Throttle Position Sensor 90980–11261
T 2 Turn Signal Flasher Relay 90980–10799
T 3 TVIP ECU 90980–12169
T 4 Tweeter LH90980–10915
T 5 Tweeter RH90980–10915
U 1 Unlock Warning SW 90980–10860
V 1 Vehicle Speed Sensor (Combination Meter) 90980–11143
V 2 VSV (Canister Closed Valve) 90980–11162
L PART NUMBER OF CONNECTORS
Code Part Name Part Number Code Part Name Part Number
Note: Not all of the above part numbers of the connector are established for the supply.
2004 COROLLA (EWD533U)212
V 3 VSV (EVAP) 90980–11156
V 4 Vapor Pressure Sensor 90980–11143
V 5 VSV (Vapor Pressure Sensor) 90980–11859
W 1 Washer Level Sensor 90980–11068
L
Code Part Name Part Number Code Part Name Part Number
2004 COROLLA (EWD533U)
213
M OVERALL ELECTRICAL WIRING DIAGRAM
2004 COROLLA (EWD533U)
214
M
2004 CO
RO
LLA (E
WD
533U)
215
[A] : System Title
[B] : Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
B = Black W = White BR = Brown
L = Blue V = Violet SB = Sky Blue
R = Red G = Green LG = Light Green
P = Pink Y = Yellow GR = Gray
O = Orange
The first letter indicates the basic wire color and thesecond letter indicates the color of the stripe.Example: L – Y
L(Blue)
Y(Yellow)
[C] : The position of the parts is the same as shown inthe wiring diagram and wire routing.
[D] : Indicates the pin number of the connector.The numbering system is different for femaleand male connectors.Example : Numbered in order
from upper left tolower right
Numbered in orderfrom upper right tolower left
Female Male
The numbering system for the overall wiring diagram is the same as above
[E] : Indicates a Relay Block. No shading is used and only the Relay Block No. is shown to distinguishit from the J/B.Example : Indicates Relay Block No.1
[F] : Junction Block (The number in the circle is the J/B No. and the connector code is shown beside it). Junction Blocks are shaded to clearly separate them from other parts.
3C indicates thatit is insideJunction BlockNo.3
Example:
[G] : Indicates related system.
[H] : Indicates the wiring harness and wiring harnessconnector. The wiring harness with maleterminal is shown with arrows ( ).Outside numerals are pin numbers.
Female Male ( )
[I] : ( ) is used to indicate different wiring andconnector, etc. when the vehicle model, engine type, or specification is different.
[J] : Indicates a shielded cable.
[K] : Indicates and located on ground point.
[L] : The same code occuring on the next page indicates that the wire harness is continuous.
SYSTEM INDEXM
OV
ER
ALL E
LEC
TR
ICA
L WIR
ING
DIA
GR
AM
2004 CO
RO
LLA (E
WD
533U)
216
SYSTEMS LOCATION SYSTEMS LOCATIONABS 12–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning 26–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Glare–Resistant EC Mirror with Compass 14–4. . . . . . . . . . .
Back–Up Light 10–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 21–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock 21–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combination Meter 24–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control 11–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Lock Control 15–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronically Controlled Transmission 10–2. . . . . . . . . . . . . . . . . . . . . . . .
Engine Control 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog Light 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater 27–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn 21–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illumination 8–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Light 9–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Reminder Buzzer 19–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Light Reminder Buzzer 19–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Moon Roof 18–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Outlet 21–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Source 1~27–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Window 17–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator Fan 25–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio and Player 23–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Window Defogger 22–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 20–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Belt Warning 19–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Lock 18–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS 13–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stop Light 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillight 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal and Hazard Warning Light 5–2. . . . . . . . . . . . . . . . . . . . . . . . . .
TVIP System 16–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiper and Washer 14–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wireless Door Lock Control 15–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
1 COROLLA
B
1A1
1
30AMAIN
1
2
B–R
IM3
IG2
ST2
6
4
5 AM2B B–W
R
B
Battery
FL MAIN2. 0L
7 II1
1 B1A
11 II2
6
9
P
N
B
B–R
B–W
Ignition
1
3 42
L–Y
W–B
R–L
B–W
B–WY–G
W–B
L–Y
2 43
1 1
3 42
L–Y
W–B
GR
B–W
2
1
B–WL–Y
W–B
W
3 4
1
H B
F AF AF AF A
L–Y
L–Y
L–Y
L–Y
W
W–B
10 EA1
B–WB–W
Engine ControlModule<3–5><3–6>
GR
Y–G
R–L
B–WB–WB–WB–W
W–B W–B
W–B
B L
EC
W–B
I10
S 2(A), S 3(B)
N 1
I 2
J 2(A), J 3(B)
S ta rtingP ow er S ource
IGF IGT GNDGNDIGFIGTGNDIGFIGTGNDIGFIGT
+B +B +B +B
I 3 I 4 I 5Ignition Coil and
Igniter No. 1
Ignition Coil and
Igniter No. 2
Ignition Coil and
Igniter No. 3
Ignition Coil and
Igniter No. 4
Ignition SW
JunctionConnector
Noise Filter
(Ignition )
Starter
G AG A
G A
IL5
IC12
A AA A
E B
12 II23 IA2
B
10 IA5
ClutchStart SW
C 8
JunctionConnector
J 2(A)
JunctionConnector
J 2(A), J 3(B)
Engine C
ontrolM
odule<3–3>
RR
RR
RB B
BB
BB
B
R Engine Control Module<3–3>
(A/T )
(A/T )
(M/T )
(M/T )
B(M
/T )
(A/T)
(A/T )
15AAM2
IM6
B–R
(*2 M/T )
(A/T )
(M/T )
(A/T )
(A/T )
2 IA4
1
2
5
3
IM1 IL11 IF4
2
1
Park/Neutral
Position SW
A 2
B B
2
1
4
3
IE
A
B–W
B–R
B
Starter Cut
Relay
S 8
STRelay
TVIP ECU<16–3>
(*1 )
(*2 )
(*1 )
(*1 )
(*1)
W–B
W–B
JunctionConnector
J 6
* 1 : w/ TVIP System* 2 : w/o TVIP System
B
(* 2)
(*2 )
B(*1 )
B(*1 M
/T )
(*2)
Behind the CombinationMeter
Left Side of theCylinder Head
111
111
111
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
2 COROLLA
B
1A1
100A ALT
1
2
5A A
LT–S
1
2
1B1 1 1C11D1 1
30A M
AIN
1
2
B–R
WWB–G
W
IB1 IM3
25AAM1
1
ACC
IG1
IG2
ST2
AM1 2
65 AM2B
W B–Y
B–W
Battery
FL MAIN2. 0L
IE
A
IG
A
14 II2
B A
C B
W–B
W–B
R–W
2 II2
Y31
32
B–O
5 EA1
WW
Charg ingP ow er S ourceW
Charge
W
B–Y
Ignition SWI10
Y
B–G
R–W
J 4 (A), J 5 (B
)
Com
bination Meter
C 9
J 6 J 7
W
Daytim
e Running Light
Relay<
4–2>
G 1(A), G 2(B)
2
1
3
5
Generator
JunctionC
onnector
JunctionConnector
JunctionConnector
IF12 IM6
15AAM2
2 IA4
B–R
IL5
IK8
3B10
3B93B8
Y YB
–W
IG2 IF4 IH10
IA1 IF2R
–W
3B22
3B20
R–W
IG1Relay
10AGAUGE
1 A
L3
A
1B
2A
S
B
IG
Behind the CombinationMeter
RightKickPanel
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
3 COROLLA
2
1 1
100A ALT
30A M
AIN
2
1C1 1
1 IB IM3
5
W B–RB
B
Battery
FL MAIN2. 0L
1A1
R–B
7. 5A OBD
IG2AM2 6
15A EFI
1
2
1
3
5
2
1
1 1
1 1
A
2
1
3
5
5
4
M
ED BH
R–W
R–W
B
W–B
B–R
R–W
R–B
G–R
BATT
P ow er S ource Engine C ontro l
EFIRelay
C/O
PN
Relay
R–W
3 EA1
9 EA1 9 II1
Malfunction
Indicator Lamp
33
32
3 D
B
11 D
R–Y
B B
W–B
B–W
BB B
B
W
(Cont. next page)
Clutch S
tart SW(M
/T )Park/N
eutralPosition S
W(A
/T )<
1–2>
STA
9 B
B
ST2
B–W B–O
1 IA2
C 9
I10
E 3(A), E 4(B), E 5(C), E 6(D)
F10
Com
bination Meter
Engine Control Module
Fuel Pump
Ignition SW
IK8IC12 IL5
10 EA1
IJ7
15A AM
2
6 IM
B–W B–W
23
2
1
2
1
2
1
2
1
B W L
2 A 3 A 4 A
#20 #30 #40
C A C A
B B B B
EC
2
1
7 A 5 A6 A 12 A
W–B
1
B–W
B–W
B–W
B–W
W–B
B–L
L–BBB
W–B
W–B
E01 RSOE02 EVP
B–W
B–W
II18
BB
DUTY
GND VISC
5 B
W–B
E03
B
II217
L
2
1
1 C
LB
CCV
V 2
J 4 (A), J 5 (B
)
I 1 V 3
I 6 I 7 I 8 I 9Injector No. 1
Injector No. 2
Injector No. 3
Injector No. 4
Idle Air
Control V
alve
JunctionC
onnector
VSV
(EVA
P )
VSV
(Canister
Closed Valve )
2 IA4
B–R
B–W
B–O
IG4 ID19 IG1
Y
1 A
#10
NSW
BIgnition SW<
1–3>R
(A/T )
8
B–W
B–W
10 D
FC
Front LeftSuspension Tower
Under the LeftQuarter Pillar
Left Side of theCylinder Head
2004 CO
RO
LLA (E
WD
533U)
7 865
3 COROLLA (Cont’ d)
E ngine C on trol
(Cont. next page)
E 3(A), E 4(B), E 5(C), E 6(D)
J 2 (A), J 3 (B )
B
T 1
E 2
A8
IGT1
R–L
IGT2
A
BR
GR
10 A
IGT3 IGF
A23
L–Y
W
11 A
IGT4
VCE2THWTHAEVG
Ignition Coil and Igniter
No. 1, N
o. 2, No. 3 and N
o. 4<
1–3><
1–4>
VG VTA
9
3 2 4 1 3
51
BRB
G L–W
Y–B
M 1
W BR
A28A19 A18 A21A20B32B24
2
1 H A AHAH
BF
Y–R
14 C
THWO CF
6 D
G–W
Stop Light SW
<7–2>
F/PSSTP
14 D19 C
Com
bination Meter
<24–2>
Airbag S
ensor Assem
bly<
13–5>YGW
”D
EF I/U
P”
Fuse<
22–3>
ELSELS2
13 D 12 D
Y–G
BB
B
R–BA
B
R–B
C
A
Mass A
ir FlowM
eter
Engine Coolant
Temp. S
ensor
Engine Control Module
JunctionC
onnector
Throttle Position
Sensor
A
2
1
14 A
B–YY
OCV+ OCV–
C 2
15
Cam
shaft Timing O
ilC
ontrol Valve (V
VT )
TAIL R
elay (US
A)
<8–2>
2
BF J 2 (A), J 3 (B )BD
AB JunctionC
onnector
AB1
3
2
PTNK
D21
7 II21 ID2
BR BRB
R
BR L
YY
BR
Y
Y
BR
Y
LG
V 4Vapor P
ressureSensor
2 ID2
L
TBP
D4
8 ID2
V 5
1
2
VSV
(Vapor Pressure S
ensor )
7 ID2
RR
B
BB
L–W
D
IDLO
Cruise C
ontrol EC
U<
11–3>
16
29 B
L–R
PSW
P 1
1
Power S
teeringO
il Pressure SW
FAN
7 D
A/CS
31 C
ACLD
33 C
THR
C 322
ACMG
C
PRS
13 A
Radiator Fan
System
<25–3>
Air Conditioning
System<
26–4>
28 B
W–B
EC
10 II2
IG
A
JunctionConnector
J 7
W–B
Com
bination SW
(Canada )<
8–2>
16 II2
Right Kick Panel
VG E2G THA
+B E2
6 ID2
2004 CO
RO
LLA (E
WD
533U)
11 12109
3 COROLLA (Cont’ d)
* 1 : ShieldedE ngine C on tro l
C 3
Com
bination Meter
<24–3>
(*1 )
(*1 )
(*1)
II16
W (*1 )
(*1 )
BB
(*1 )
P–B
BR
W–B
BAT
SGCGTCSIL WFSE
TCSIL WFSE
E1 KNK1OX1BHT1BOX1AHT1A +B
D 1
W
42
16
54137 15
31
BR
B
BR
W–B
BR
BR
BR
BR
BR
(*1 )
B
BR
NE+ G22+R
–B
BR
W–B
P–B
L–R P
P–B
L–R P
BWW
NE–
B
D1 B1B4 B23 C4 21 B B7
II28
(*1)
2
AA
EB
A B A B
A A A A AAAA
BABA
D19D18 D20
A
IE
21 4B
II11
B
TACH
5 D
C 1
26 AA34A27
AEAE
BA
1
2
2
1
J 2 (A), J 3 (B
)
A
C
R–B
B
H 8
K 1
J 6
J 4 (A), J 5 (B
)
E 3(A), E 4(B), E 5(C), E 6(D)
E1+B
HT OX
Cam
shaft Position S
ensor
Crankshaft Position
Sensor
Data Link Connector 3
Engine Control Module
Heated O
xygen Sensor
(Bank 1 S
ensor 2 )
JunctionConnector
JunctionC
onnector
JunctionC
onnector
Knock Sensor
B
1 3
42
H 5
Heated O
xygen Sensor(B
ank 1 Sensor 1 )
BB
EKNK
B2
3B2 4C3
3B3 4C4
Com
bination Meter
<24–2>
V–W
SPD
17 C
P B
B BR
4B3
44B
14B
24B
BR
(*1)W
18 II2 9 II2
B
W
14B16
(*1 )
3B43B1
4C1 4C2 4C5
P–B
P–B
P–B
GR
B–Y
L–R
L–RSkid C
ontrol EC
Uw
ith Actuator
<12–4>
Airbag S
ensorA
ssembly
<13–5>
Airbag SensorAssem
bly<
13–5>
Cruise C
ontrolEC
U<
11–4>
Skid Control E
CU
with A
ctuator<
12–4>
Skid Control EC
Uw
ith Actuator
<12–4>
Airbag Sensor
Assembly
<13–6>
A/BTS
1112
+B E1
OXHT
B
Left Side of theCylinder Head
Behind the CombinationMeter
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
4 COROLLA (Cont. next page)
B
1A1
1
1 1D 1C1
2AM1 IG1
ACC
1
2
1
3
5
10A G
AUG
E
IB1
IG
A
IE
100A ALT
40A H
EA
D M
AIN
W–B
W–B
W
B–Y
R–WWW
W
FL MAIN2. 0L
Battery
IG1Relay
1
2
W–B
2
I10
IF12 IF2 IA1 IG2
1
IH10 IF4
IH1
R–B
25A A
M1
10A E
CU
–B 7 16 1
11
12 3
A
13 12 9
H HI DRL
A
D
H–LPDIM
C12
F
13 6
G
R–Y
W–R
IG +B CSBTAIL
2014
RR
R–Y
R–B
W–R
R–W
R–B
G–Y
W–B
R
H ead lightP ow er S ource
R–Y
OFF
Tail
Head
Low
High
Flash
E T RF H EL HL HU ED EL
Dim
mer SW
LightC
ontrol SW
Com
bination SW
Ignition SW
3B22
3B12
CHG–
Generator
<2–2>
8
Y
FOG
4
G–O
1 IE1
1
CLTB
G–Y
IE13
CSO
19
G–O
4
CLTS
G–B
IE12
CSE
18G
–R
3
CLTE
G–W
Daytime RunningLight Relay
D 2
Automatic LightControl Sensor
A18
R–W
10
BRK
Skid C
ontrol EC
Uw
ith Actuator(w
/ AB
S )<12–4>
Com
bination Meter
(w/o A
BS )<
24–8>1
ParkingBrake SW
P 3
R–B
11
PKB
2
E
W–B
ED
A
3 IA4
W–B
3C43C5
3C6
8
R
IntegrationRelay <15–7>
R R
R–BE
R
TVIP ECU<16–3>
RB
G–OC
1
15A FO
G
G
* 2 : w/ TVIP System
(*2 )
1
2
(*1 )
(*1 )
(*1 )(*1 )
(*1 )
(*1 )
TaillightS
ystem<
6–1>
T
15
* 1 : USA
TaillightSystem<6–1>
10
W–B W–BA
W–BG
Right Kick Panel Behind the CombinationMeter
Front LeftSuspension Tower
(*3 )
R
(*4)
(*4 )
* 3 : w/ Wireless Door Lock* 4 : w/ Fog Light
JunctionConnector
J 6JunctionConnector
J 7W–B
A
2004 CO
RO
LLA (E
WD
533U)
5 6 7 8
4 COROLLA (Cont’ d)
Head ligh t
R–W
R
R
IA210
ER–B
IA24
R–Y
W–R
Com
bination Meter
R
R–Y
R
11
3
5
1
2
11
HE
AD R
elay
C 9
R–B
R–B
R
R
W–R
R
IA66
14
11
2 2
DIMMERRelay
W–R
R–Y
G
11
11
1
2
3
5
11
10AHEAD RHUPR
10AHEAD LHUPR
1
F
D
A
ED
1
2
1
2
EA
C12
F 2
F 1
1
3
5
2
1
1
1 1
W–B
W–B
RR
G
FogLight S
W
4
On
2
OFF
LFG
G–O
R–Y
W–B
G
BFG
FOGRelay
R–Y
Combination SW
Front Fog Light LH
Front Fog Light RH
IA59
BR
CG–O
Fog L ight
R
R
G
High Beam
13
W–B
1
2
1
2
Headlight LH
(High )
H 1
Headlight R
H(H
igh )
H 3
W–B
W–B
EA
1
10AHEAD LHLWR
10AHEAD RHLWR
1 1
22
1 1
R
Headlight LH
(Low)
R–W
H 2
2
1 1
2
Headlight R
H(Low
)
H 4
R–B
IA41
R–B
R–B
R–B
R–B
W–B
W–B
ED
W–B
Front LeftSuspension Tower
Front RightFender
Front LeftSuspension Tower
Front RightFender
(*4)
(*4 )
* 4 : w/ Fog Light
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
5 COROLLA
B
1A1
10A H
AZA
RD
1
2
1 1D1 1C1
WW
G–W
IB1
25AAM1
1
ACC
IG1AM1 2
W
IA1
2
1
3
5
10A GA
UG
E
IE
A
FL MAIN2. 0L
Battery
W–B
LH RH
2
2524
G–B
G–Y
2
3
G–B
ED
2
3
G–Y
EA
G–B
G–Y
W–B
T urn S ignal and Hazard W arning L igh tP ow er S ource
* 2 : w/o Wireless Door Lock* 1 : w/ Wireless Door Lock
1
2
IG1Relay
BI
C 9
I10
F 4
F 3
100A A
LT
W–B
W–B
G–B
G–Y
W–B
W–B
W
B–Y
3 2
1
R–W
R–W
LL LR
IG
C12
7
GND
5
EL
G–R
LH
RH
6
ER
G–O
W–B
W–B
W–B
Turn SW
Y–B
8
HAZ
TL E TR
6
5 7
3
2
W–B
T 2
Com
bination Meter
CombinationSW
Front Turn Signal
Light LH
Front Turn Signal
Light RH
Ignition SW
Turn Signal Flasher Relay
4B17 4B15 3A21
4B18 3A114B21
ID12ID17IC1IC8 IH12 IG5
IH13 IG6IH11IK1IL9 3C33C2
3C1
Integration Relay
<15–3>
R 9
Rear C
ombination
Light LH
R11
Rear C
ombination
Light RH
IF4
IF2 IG2
3B22
3B15
8 IA5
IF12
IH5
Hazard S
WH
7
W–B
JunctionConnector
J 6A
IG
+BG
–W
4
G–W
R–W
A
W–B
W–B
Y–B
(*1 )Y
–B(*1 )
JunctionConnector
J 7
W–B
W–B
W–B
* 3 : w/ TVIP System
(*1 )
Y–B(*2)G–Y
G–B
Turn
Turn
3 3
4 4
Y–B(*3 )
Y–B(*1)
TVIP
EC
U<
16–3>
Behind the CombinationMeter
Lower Back PanelFront LeftSuspensionTower
FrontRightFender
Right Kick Panel
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
6 COROLLA
1
100A ALT
2
1 1A
Battery
FL MAIN2. 0L
1C1
IH7
OFF
Tail
Head
2
1
2
1
ED EA
G–W
G G
W
W–B
Pow er Source
1
2
BI BH
GG G
ACAC
BB
G
W–B
E T
T aillight
Tail
Tail
4 4
1 113
B
15ATAIL
G–W
2
1
5
3
3 3
3 3
Light Control
SW
14
G–B
G
D 2
C12
TAIL R
elay
T
TAIL
Combination SW
Daytime RunningLight Relay
IB1
10
A
A
C A
IC2 ID2IL2
2
1
A
A
W–B
G
GGGG
W–B
4B21
4B11
A
IEW
–BW
–B
W–B
W–B
W–B
JunctionConnector
J 8A
A
JunctionConnector
J 6
15
G–W
JunctionC
onnector
J 1
Front ParkingLight LH
F 3
Front ParkingLight R
H
F 4
Rear C
ombination
Light LH
R 9
Rear C
ombination
Light RH
R11
License Plate
Light LH
L 1
License Plate
Light RH
L 2
W–B
Junction ConnectorJ 8(A), J 9(B)
W–B
G–W
G–W
(Canada)
(Canada)
(USA)
(USA
)
(USA
)
(US
A)
(US
A )(U
SA)
G(C
anada )
B B
(USA)
Behind the CombinationMeter
Front LeftSuspensionTower
Front RightFender
Lower Back Panel Under the LeftQuarter Pillar
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
7 COROLLA
BW
IB1
15ASTOP
IC14
R–W
1
2
G–W
G–W
2
1
BH
4
2
4
2
G–W
G–W
W–B
W–B
W–B
W–B
S top L igh tP ow er S ource
Battery
FL MAIN2. 0L
Skid Control E
CU
with
Actuator<12–4>
Stop
Stop
1A1
1
2
1C1
100A ALT
BI
S 9
R 9
R11
H 9G
–WE
ngine Control
Module<
3–7>
W–B
G–W
G–W
High M
ountedStop Light
Rear C
ombination
Light LH
Rear C
ombination
Light RH
Stop Light SW
IC5
IL1
ID7
3C13
3C11 3C10 3C12
G–W
Shift Lock C
ontrol EC
U<
18–4>
Cruise C
ontrol EC
U<
11–4>G
–W
G–W
G–WG
–W
JunctionConnector
J 8(A), J 9(B)
R–W
C B C B
B A B A
W–B
G–W
2
1
High M
ountedS
top Light
H 9
JunctionConnector
J 8
A A
A
(Bulb Type )
(Bulb Type )
(LED
Type )(LED
Type )
Lower Back Panel Under the LeftQuarter Pillar
(w/ A
BS )
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
8 COROLLA
P ow er S ource Illum ination
5
10
3
1
3
8
1
2
IE
A
28W–B
G G G G G G
W–B
W–B
W–B
W–B
W–B
W–R
W–B
18
3
1
C 9
A10
C 6
B 5
R 5
A 8
R 3 (A
), R 4 (B )
5
4
GW
–B
H 7 2
R 7
G
J 6
1
100A ALT
2
1 1A
B
Battery
FL MAIN2. 0L
1C1
W
15ATAIL
2
1
5
3
3 3
3 3
G–W
GTA
IL Relay
Radio and P
layer
A/C S
W
Blower S
W
Cigarette Lighter
Illumination
Com
bination Meter
Rheostat
Rear W
indow D
efogger SW
Hazard S
W
JunctionC
onnector
A/T Shift Lever
Illumination
IH7
IB1
Taillight System
<6–1>
G
W–B W–B W–B W–B W–B
GG
W–B
GGGG
G
W–B
W–B
5 1
G–W
G
LED ILL–
TAIL
4B19
4B21
Engine ControlModule<3–6>
OFF
Tail
Head
E T
1013
1
4C20
4C18
G–W
(*2 )
G(*2)
Light Control
SW
Combination SWC12
15A DO
ME
(*1 )
IL4
IC7
L–WL–W
L–WL–W
6
Clock<21–2>
(*1 )
G
G
G
(*1 )
(*1 )
10 A
5 B
G
+B
G
W–B
W–R
3
GND
* 2 : Canada* 1 : USA
Illumination
Behind the CombinationMeter
1
2
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
9 COROLLA
1
ACC
IG1AM1 2
IA1
2
1
3
5
IG1 R
elay
10A G
AUG
E
IGIE
AA
20
5
9 5 6
L–W
W–B
W–B
B–Y
DCTY PRCTY
R–Y
P ow er S ource Inte rio r L igh t
* 1 : w/ Moon Roof* 2 : w/o Moon Roof
IG
10
Door
W
W
25A D
OO
R
25A A
M1
IB1
1
+B
1
Battery
FL MAIN2. 0L
W
1 1C1 1D
2
1
100A ALT
1 1A
B
15A DO
ME
1
2
W
I10
C 9
R–W
L–WL–W
1
R–W
J 6 J 7
B
C
EW–B(*1)
(Cont. next page)
Com
bination Meter
Ignition SW
JunctionConnector
JunctionConnector
L–W
L–W
L 3
R–W
Luggage Com
partment
Light
IF2
IF12
ID1IE1 IL3 IK4 IL4 IE6IH10IF4IC7
Integration RelayI11(A)
4C20
4C19
W–B
L–W
IE4
Door C
ourtesy SW
Front LH
D 4
R–WR
TVIP EC
U<
16–4>
A
GND
R–W
2
1
* 5 : w/ Automatic Glare–Resistant EC Mirror
RR
FB(*2 *5)
1
2
D
ID4
L–W
B(*1 *5)
A
A
Interior LightI13
TVIP ECU<16–4>
R–W
R–W
AB
(*2 *5 )
1
L 4
J10JunctionC
onnector
Luggage CompartmentLight SW
Behind the CombinationMeter
Right KickPanel
(*7 )
(*7 )
(*7)
* 7 : w/ TVIP System
17
(*1 )
2004 CO
RO
LLA (E
WD
533U)
5 6 7 8
9 COROLLA (Cont’ d)
In terior L ight
* 2 : w/o Moon Roof* 1 : w/ Moon Roof
IE
R–B
3 IG
9 4B
10 4B
4
3
I11(A)
14 ID
B
EW–B(*1)
W–B
C
A
3 IK
D 7
R–W
(*3 )
D 6
R–B
R–Y
1 1
15 ID
(*3 )
1
R–W
D 5
Door C
ourtesy SW
Front RH
Door C
ourtesySW
Rear LH
Door C
ourtesySW
Rear R
H
7
7 4B
R–W
(*3 )
Rheostat
R 7
LP PCTY
R–W
R–W
3 A 13 A
R–W
(*4 )
(*4 )
(*4)
Integration Relay
* 4 : w/ Door Lock Control* 3 : w/o Door Lock Control
B
R–W
TVIP EC
U<
16–3>(*7 )
* 5 : w/ Automatic Glare–Resistant EC Mirror
3
(*4 )R
–W
FB(*2 *5)
DB
(*1 *5)
1
3
Personal Light
I12
6
1
B B
(*1 *5 )
(*2 *5 )
* 6 : w/o Automatic Glare–Resistant EC Mirror* 7 : w/ TVIP System
(*2, *1 *5 )B
(*1 *6 )
Door
Off
On
Personal Light
M 2
4B19
IE Behind the CombinationMeter
A
214B
W–B
W–B
JunctionConnector
J 6
(*1 )
(*2 *6 )
A12
B
LP2
(*2 *6 )B
3 IK1
(*2 *6 )B
(*6 )
(*5 )
(*6 )
(*5 )
(*6 )
(*5 )
(*6 )
(*5 )
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
10 COROLLA
2
1 1
100A ALT
30A M
AIN
2
1D1 1
1 IB IM3
W
B–R
B
B
Battery
FL MAIN2. 0L
1A1
W
25A A
M1
15A E
FI
1
2
1
2
1
3
5
A
2
1
3
5
1 1
1
W–B
R–W
P ower Source E lec tron ica lly C on trolled T ransmiss ion
IG1 R
elay
EFI Relay
(Cont. next page)
1C1
1
5
ACC
IG1
IG2
ST2
AM1 2
6AM2
IA1
10A G
AUG
E
1
3 D
3 EA1
IE
A
ED
9 EA1 6 II1
1 D 17 A 16 A 15 B 13 B 14 B
19 A 21 A
Engine C
ontrol System
<3–6>
<3–7>
<3–8>
<3–10>
18 A 17 C 18 C
Cruise C
ontrol EC
U<
11–3> B
B–W
B–O
BATT THW VTA VC SPD OD1
+B SLT+ SLT– S1 SL S2
B–Y
R–W R–W
W
W–B
W
R–W
B–W
R–W
R–Y
LL–W
R–Y
P
R–WB
W–B
B
W–B
W–B
B
B
I10
R–W E 3(A), E 4(B), E 5(C), E 6(D)
SLT+ SLT– S1 SL S2
Engine Control Module
Ignition SW
Electronically Controlled Transmission SolenoidE 1
IF12
IF2 IG2
IF4 IH10
15A A
M2
6 IM
2 IA4
B–R
IC12
STP
C19
IK8
IL5
1 IA2
10 EA1
B–W
B–W B–W
4B3
4B1
J 6JunctionConnector
D A D A
B B
L
JunctionC
onnector
J 2 (A), J 3 (B )
LC
ruiseC
ontrolE
CU
<11–3>
R–W
3B20
3B22
CW–B
R–W
B–W
1 4 3 2 6
(*1 )
28 A
E2
* 1 : w/ Cruise Control
(*1 )
G GR W Y B
Behind the CombinationMeter
Front LeftSuspension Tower
2004 CO
RO
LLA (E
WD
533U)
5 6 7 8
10 COROLLA (Cont’ d)
E lectronically Contro lled Transmiss ion B ack–U p L ight
EC
A
IG
B28
W–B
W–B
AW–BA
A10
C
4
ODMS
W–B
LG–B
2
C29
O/D
Main S
WW
–B
3A
17 3A
11
10 II2
W–B
W–B
C
(A/T)
6
C
J 7
B–OB
A
7 C
248
3
RL2LLL
(M/T )
5 II12 II1
R–B
9 C8 C
14 II2
32
LG–B
LG
JunctionConnector
R–B
B–O
LG
R–W
LG
LG–B
ODLP
L 2
3
LG
LG–B
O/D
OFF
R–W
RB
E 3(A), E 4(B), E 5(C), E 6(D)
ID
(A/T)
IK9
R–B
R
R–B
A 2
C11
C 9
E02E03
EC
5 B A
C A C A
6
B B
7 A
W–B
E01
W–B
W–B
W–B
W–B
J 4 (A ), J 5 (B)
W–B
W–B
W–B
R10
1
2
R–B
R–W
13 II2
R–W
(M/T )
BI
R–B
2
1
R–B
R–B
2
1
BH
IK10
B
B
R–B
B 1
R12
J 4
J10
Back–Up
Back–Up
Back–UpLight SW
CombinationMeter
Engine Control Module
JunctionC
onnector
JunctionC
onnector
JunctionConnector
A/T Shift Lever Position SW
Rear C
ombination
Light LH
Rear C
ombination
Light RH
LG
A A
A A
J 4 (A)
JunctionC
onnector
E1
EB
7 B
BRBR
C
A B
A A
JunctionC
onnector
J 8 (A), J 9 (B
)
W–B
R–W
A B
Back–Up Light SW
RightKickPanel
Left Side of theCylinder Head
Left side of theCylinder Head
Under the LeftQuarter Pillar
Lower Back Panel
2004 CO
RO
LLA (E
WD
533U)
3 421
11 COROLLA
IB1
25AAM1
IF12
1
ACC
IG1AM1 2
5 IL
IK8
IF9
3B22
3B20
2
1
4 II1
3 II1
2
3
4
2
M
1 3
4
IE
3
A
2 13 14 6 3 10 12
7
4 5 11 7 15 8 16
Battery
FL MAIN2. 0L
W
R–W
WB
R–W
B–W
L–W
R–Y
LL(*1 )
(*1 )
(*1 )
G–W
P–B
V–W
L
G–O
R–G
R–Y
R–L
G–Y
G–R
R–W
L
L
R–W
G–R
W–B
(A/T )
B–O
(M/T )
(M/T )
D
RES/ACC
SET/COAST
CANCEL
Stop Light S
W<
7–2>
Data Link
Connector 3
<3–11>
Com
bination Meter
<24–3>
P ow er S ource C ruise Contro l
W B–Y
MO L
GND
MC
D CCS MCPI MO L GND
+B IDL OD ECT STP– TC SPD
Engine Control
Module<
10–4>
Engine Control
Module<
10–4>
Engine C
ontrolM
odule<3–7>
* 1 : A/T
W–B
(A/T )
(A/T )
3C20
3C17 3C19
3B6
3B5
B–W
Cruise ControlECU
C14
CRUISECCS
ECC
3Cruise ControlActuator
C 4
13 IA512 IA5 4 IA5
R–L
R–G
G–O
StopLight SW
S 9
JunctionConnector
J 6
4B214B124B13
4B14
W–B
W–B
W–B
B
B
14 II2
R–W
(A/T )
Cruise C
ontrolC
lutch SW
C13
5 IA5
14 IA5
L(M
/T )
3B19
R–W
(M/T )
32
23
2 IF
IG2
5 IG2
ST2
6AM2
B–W
Ignition SWI10
6 IM
iM3
B–R
15AAM2
B
2 IA4
1
30AMAIN
B–R
1A1
100AALT
1 1
2 2
JunctionC
onnector
J 4
Combination SWC10
A/T Shift LeverPosition SW
A 2
L
(A/T)
1C11D1
2
1
3
5
10AGAUGE
IG
A
JunctionConnector
J 7
W–B
IH10
IG1 R
elay
W–B
IF4
W–B A
W–B
W
IA1
W
IA53
W–B
CR
UIS
E
Com
bination Meter
C 9
Right Kick Panel Behind the CombinationMeter
10AECU–IG
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
12 COROLLA
2
1 1
100A ALT
30A M
AIN
2
25A AM
1
1
ACC
IG1
IG2
ST2
AM1 2
65 AM2
B–W
B
Battery
FL MAIN2. 0L
1A1
IB1
11 1D1
11
2 2
1C1
1
2
1
3
5
10A GA
UG
E
10A EC
U–IG
IE
A
Brake
AB
S5 IA6
EA
40A AB
S NO
. 2
30A AB
S NO
. 1
1
2 2
1 1
2
1
2
P ow er S ource A B S
P–B
L–R
1 IB1 2 IB1 3 IB1 4 IB1
WRYBWBGR
W–B
W–B
W–B
W–R
RR
W–R
LRB–O
R–W
W–B
R–W
B–O
B–R
WWRL
R
W–R
2 24 8 11
19 30 23 1 13 26 27 28 7 6 5 4
BRL WA GND2 GND1 FL+ FL– FR+ FR– RL+ RL– RR+ RR–
+BS +BM TC D/G
4
2
32
37 36
IG1Relay
WRYB
11 IA6
GR
GR
10
TS
W
C 9
J 6
A 3
A 4
A19
A20
I10
IA1
S 1
B
W
R–W
12
PKB
15 IA5
R–W
G–W
W–G
16 17
STP SP1
Stop Light S
W<
7–2>
Com
bination Meter
<24–3>
ABS
Speed S
ensorFront LH
ABS
Speed S
ensorFront R
H
ABS
Speed S
ensorR
ear LH
ABS
Speed S
ensorR
ear RH
Com
bination Meter
Ignition SW
JunctionConnector
Skid Control ECU with Actuator
35
Com
bination Meter
System
<24–7>
IF12
IM3
15A AM
2
6 IM
2 IA4
B–R
IF2
IF4 IG2 IK8
16 IA5
4B21 4B18
A
3B16
3B22
IL5
12 IA6 4 IA6
P–B
L–R
Daytim
e Running Light
Relay<
4–4>
B–Y
W–B
W–B
Data Link C
onnector 3<
3–10><
3–11><
3–12>
IC13
3
IG1
B–W
B–W
Behind the CombinationMeter
Front Right Fender
1 BD11 BC1 2 BC1 2 BD1
B W B W
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
13 COROLLA
B
1A1
15AAM2
1
B–R
IM3
15 B
+SL
W–R
3 IA1
W–R
2 1
–SL+SL
26 B
–SL
BR
IA14
BR
9 B
+SR
B–W
IA11
B–W
2 1
–SR+SR
20 B
–SR
BR
–W
IA12
BR
–W
8 B
P2+
Y–G
R
7 B
P2–
Y–P
1 2
2 A
PL+
Y–B
1 A
PL–
Y
1 2
5 C
PR+
Y–B
6 C
PR–
Y
1 2
Battery
FL MAIN2. 0L
B–W
B–W
B
S R SPow er Source
5 IG2
ST2
6AM2
I10
P13P12A15A16
A 5 A 6
1 C 2 C
SFR–SFR+
1 2
Y–R(*1 )
Y–G
(*1 )
S 7
6 A 5 A
SFL–SFL+
1 2
Y–R
(*1 )
Y–G
(*1 )
S 6
7 C 10 C 9 C 12 C
ESR SSR– FSR VUPR
1
GR
(*1 )
2
L–Y(*1 )
3
LG(*1 )
4P(*1 )
S11
A12(A), A13(B), A14(C)
Airbag Sensor Front LH Airbag Sensor Front RH
Airbag Sensor Assembly
Airbag Squib(Front Passenger Airbag Assembly)
Airbag Squib(Steering Wheel Pad)
Ignition SW
PretensionerFront LH
PretensionerFront RH
Side Airbag Sensor RHSide AirbagSquib LH
Side AirbagSquib RH
12 A 9 A 10 A 7 A
ESL SSL– FSL VUPL
1
GR
–L(*1 )
2
L–W(*1 )
3
LG–B
(*1 )
4
P–L
(*1 )
S10Side Airbag Sensor LH
10 B
P+
Y–R
11 B
P–
Y–G
3 4
16 B
D2+
Y–V
17 B
D2–
Y–O
1 2 34
Y
D–
B13
Y–B
D+
B143 IG1
Com
binationM
eter<19–3>
3 A
LSP+
G–W
4 5
R–B
LSP–
A4 11 A
LBE+
G
2
423
8 C
RBE+
2 IG1 1 IG14 IG1
3A15
3A11
IG
A
W–B
G–Y
W–B
W–B
W–B
G–Y
W–B
BB
L–WL–W
B
B
Com
binationM
eter<19–3>
1 1 3
143A
B
* 1 : w/ Side Airbag
JunctionConnector
J 7
Buckle SW RHB 7
Buckle SW
LHB
6
30AMAIN
1
2
IM6
A
(Cont. next page)
2 IA4
B–R
OccupantDetectionSensor
Seat P
osition Sensor
VS GND
Right Kick Panel
VUPLFSLSSL–ESL ESR SSR– FSR VUPR
D+ D– D2+ D2– P+ P– P2+ P2–
Occupant
Detection
Sensor
Buckle S
W
Buckle
SWSeat Position
Sensor
2004 CO
RO
LLA (E
WD
533U)
5 6 7 8
13 COROLLA (Cont’ d)
IG
A
IE
A
5 B
IG2
B–O
W–B
W–B
19 B
TC
P–B
12 B
SIL
L–R
3 B
LA
B–YB
–Y
32
239
W–B
W–B
B–W
S R S
23 B
GSW2
Y SR
S
C 9
B–O
27 B
E1
W–B
28 B
E2
W–B
Com
bination Meter
4B18
4B21
II10 II3 II7 II1 II2 II5
IH10 IF4 IJ6 IJ4 IJ5 IJ1
II8 IK8
IL5
4C144C15
4C13
J 7JunctionC
onnector
B–YJunctionConnector
J 6
B–Y
Engine C
ontrolM
odule<3–7>
A
B–W
Y P–B
L–R
W–B A
Airbag Sensor AssemblyA12(A), A13(B), A14(C)
Data Link Connector 3<3–11><3–12>
Right Kick Panel Behind the CombinationMeter
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
14 COROLLA
1
100A A
LT
2
1 1A
1 1D 1C1
1 IB
25A A
M1
1
ACC
IG1AM1 2
2
1
3
5
15A W
ASH
ER
25A W
IPE
R
IG1 R
elay
B–Y
W
WWB
Battery
FL MAIN2. 0L
IE
W–B
A
OFF
MIST
HI
LO
INT
On
W +B +2 +1 +S B1 INT1 INT2 EW
IE
A
EA
2 4 1 3
L L
L–Y L L–R
L–W
L–W
L–R
W–B
L–W
L–W
P ow er S ource W iper and W asher
B +2 +1 S
L
M
Wiper Relay
W–B
4 8 9 7 6 5
L–Y
W
Wiper S
W
Combination SW
Front Wiper Motor
Ignition SW
JunctionConnector
5 E
OffWasher
SW
10A G
AU
GE
IF4 IC11 IL7 IC9
IF2 IA1 IE5
9 IA2 8 IA2 7 IA2 6 IA2
IF12
B–L
C11
F 6
I10
J 6 W–B
1
2
M
Front Washer
Motor
F 5
IG
A
10 IH
1 IE
A u tomatic G lare–R es istan tE C M irro r w ith C ompass
7
6
JunctionConnector
J 7JunctionConnector
J 6
W–B
W–B
B–L
B
L
Behind the Combination Meter Front Right Fender Behind theCombination Meter
Right Kick Panel
InnerMirror
I12
B(*2 )
(*1 )(*1 )
* 1 : w/ Moon Roof* 2 : w/o Moon Roof
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
15 COROLLA
1
ACC
IG1AM1 2
IA1
2
1
3
5
IG1 R
elay
10A G
AU
GE
IG IE
A A
9
W–B
W–B
B–Y
P ow er S ource D oor Lock Contro l* 1 : w/ Power Window* 2 : w/o Power Window
L–W
W
25A D
OO
R
15A DO
ME
IB1
Battery
FL MAIN2. 0L
W
1 1C1 1D
2
1
100A ALT
1 1A
B
W
I10
J 6J 7
(Cont. next page)
Ignition SW
JunctionConnector
JunctionConnector
IF2
1
IH10 IF4
Integration RelayI11(A)
9 A A8
4 IC15 IC1 7 IJ2 IJ212
Lock
Unlock
Lock
Unlock
11 IC1 IC110 3 IC1
Lock
Unlock
Detection
M
8 IC1 IC19
9 10 8 1 4
G L–Y
W R L
6 A 19 A 1 A
W–B
L–W L L–Y
W R
L–W L
L–W L
G
R
W–B
W–B
L
L–WL
L–W
7
(*2) 6 B
(*1) 5 A
5 B
8 A
3 A (*1)
3 B (*2)
4A22 4A19
4A20 4A17 4A21 4A18
3
6 5
Door Key Lock and Unlock SW Front LHD 8
Door Lock Motor Front LHDoor Unlock Detection SW Front LH
W–B
10
IG
1
+B
25 A
Y–B
HAZ
Turn Signal Flasher
Relay<
5–4>
B
C
D
L
G
A
W–BW–B
W–B
A
W–B
6 IC11 IJ2
W–B
W–B
W–B
L–Y
W
TVIP
EC
U<
16–4>
G(*3 )
L–Y (*3 )
W(*3 )
Door Lock C
ontrolS
W Front R
H
D12
Door Lock C
ontrolS
W Front LH
D10 (B
), D11 (A )
IF
W
25A AM
1
12
1
2
A
G L–Y
WL–Y
* 3 : w/ TVIP System
ID13
IC7
L–Y
L1GND UL1 UL3 LSWD ACTD
Right Kick Panel Behind the CombinationMeter
2004 CO
RO
LLA (E
WD
533U)
5 6 7 8
15 COROLLA (Cont’ d)
D oor Lock Con trol
GND
A B
A A
5
L–Y
G–Y
3
10 IDID8
1
2
L–R
BH
D13Door Lock MotorRear LH
2 IK5 IK
D14Door Lock MotorRear RH
Door Unlock Detection SW Front RHDoor Lock Motor Front RH
D 9Door Key Lock and Unlock SW Front RH
8 4A
10 4A6 4A
7 4A5 4A
9 ID20 ID
9 4AW–R
W–R
A18
W–R
7
Detection
IJ23
1 4A
2 4A 3 4A
4
JunctionConnector
W–B
11 IJ2 IJ210
Lock
Unlock
M
8 IJ2 IJ29
6 5 1 4
G L–B R L
M
8 BA1 BA13
1 4R L
M
8 BB1 BB13
1 4
R L
7 A 5 A
G
G L–B
R L
L–B
R L R LR L
G
W–B
4A
J 8(A), J 9(B)
W–B
8
D 3Door ControlReceiver
RDA PRG +B
Integration RelayI11(A)
L
D
C
B
L–Y
L–B
8 IJ
Unlock W
arning SW
<19–4>
HORN
A
G–Y
HRLY
A
RD
aytime R
unning LightR
elay<4–3>
1011
(*4 )
* 3 : w/ TVIP System
W ire less Door Lock C on tro l
HO
RN
Relay
<21–4>
(*3 )
TVIP ECU<16–4>
L–BG
W–R
W–R
L–B
(*3 )
(*3 )
L
3 2
ACT– ACT+
TVIP E
CU
<16–4>
TVSS
A
W
26
(*3 )
KSW
4
RDA
7
PRG
8
A
* 4 : w/ Wireless Door Lock
L2 UL2 LSWP
Under the LeftQuarter Pillar
2004 CO
RO
LLA (E
WD
533U)
3 421
16 COROLLA
IB1
25AAM1
IF12
1
ACC
IG1AM1 2
IF9
IG
A
10 5
11 29
Battery
FL MAIN2. 0L
WW
B
G–Y
W–B
P ow er S ource T VIP System
W B–Y
IOUT E
IG HORN
HO
RN
Relay
<21–4>
B–W
TVIP ECUT 3
L
W–B
JunctionConnector
J 7
3A11
3A19
W–B
2 IF
Ignition SWI10
1A1
100AALT
1
2
1C11D1
2
1
3
5
10AECU–IG
IE
A
JunctionConnector
J 6
W–B
IF4
IG1 R
elay
W–B
IH10
W–B A
W–B
W
IA1
W
10AECU–B
IH1
R–B
2
B–W
+B1
6
R
HEAD
Daytim
e Running Light R
elay<
4–3>
Turn Signal Flasher R
elay<
5–4>
HAZD
Y–B
8 9
R–W
DMLP
B–W
B–W
R–B
R–B
R–BR–B
8
TRIG
1
S+B
3
4
IOUT
MIC
5
6
GND
GMIC
W–B
3 4 1 2
W–BW
(Shielded )
W–B
R–W
R–W
25
IND
Glass BreakageSensor ECU
G 3
Security IndicatorS 4
IRSG
W
28 18
L–B
UL2 LSWP
W–R
38 37
W
LSWD UL3
L–Y
17
Integration Relay<9–8><15–3><15–5><15–7>
L–B
12
KSW
Unlock W
arning SW<
19–4>
Door K
ey Lock SW
Front LH<
15–3>G
L2
16 19
CTY
R
R–W
DSWD
40
21
B–R
SRLY
Starter C
ut Relay
<1–1>
Door C
ourtesy SW
<9–3>
R–B
35
DSWL
R–W
Luggage Com
partment
Light SW
<9–4>
11 ID2
R–W
Security
Behind the Combination Meter Right Kick Panel
Microphone
2004 CO
RO
LLA (E
WD
533U)
3 421
17 COROLLA
M
7
M M
P ower S ource
1
ACC
IG1
4
AM1 2
4 4
2
1
3
5
6
BB154 BB15 BA14 BA15 IJ24 IJ2
3 IC34 IC35 IC36 IC37 IC31 IC3
M4 5
6 IJ2 2 BA1 2 BB1
1 IC1
6 IC1
1 3 4 9 18 15 12 13 10 16
3 13 1 3 1
5 2 5 2 5 2
4 5 55 4 4
FL MAIN2. 0L
Battery
P/WRelay
Power Window Master SW
Power W
indowC
ontrol SW
Front RH
Power W
indowC
ontrol SW
Rear LH
Power W
indowC
ontrol SW
Rear R
H
Power WindowMotor Front LH
Power WindowMotor Front RH
Power WindowMotor Rear LH
Power WindowMotor Rear RH
W
B
B B
B
B
B
W–B
B–Y
30A PO
WE
R
B B
B
W–B
Y G G–R
L–W
R–G
L–B
R–B
L–R
Y G
W–B
G–R
L–W
R–G
L–B
L–R
R–B
L–R
R–B
L–R
R–B
L–W
G–R
G–R
L–W B
R–G
L–B BBB B
W–B
GYGYGY
P ow er W indow
Ignition SW
2
1
SU SU SU
D D D
SD SD SDB B B
UUU
Up
Dow
n
Up
Dow
n
Up
Dow
n
3 ID1 4 ID1
2 IC3
BB
IG7ID18IF4IH10
25A AM
1
10A G
AUG
E
IF2IA1
IF12 IB1
4B94B6
74B
84B
104B
1C1 1D1
1A1
IG
W–B
IE
W–B
B
WW
B B
W–B
W–B
W
W
100A A
LT
I10
P 8
D11
P 9 P10 P11
IG1
Relay
A A
JunctionConnector
J 6
P 5
P 6
P 7
3
5
2
1
1
2
JunctionC
onnector
J 7
AW–B
Down
Window
LockS
W
Lock
Norm
al
Front LH
Front RH Rear LH Rear RHBB
RRDRRURLDRLUPDPUDDDUEE
Right Kick Panel Behind the CombinationMeter
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
18 COROLLA
B
1A1
1D1 1C1
1
ACC
IG1AM1 2
25AAM1
2
1
3
5
10A E
CU
–IG
30A P
OW
ER
IB1
IE
A
546 7 8
215 6
4 3
W–B
W–B
IG
1 5 3
P ow er S ource M oon Roof S hift Lock
Stop Light S
W<
7–2>
W–B
B–W
G–W
W–BW–B
W–B
W–B
GR
G–W
R–L
W–B
B–Y
B–WWW
WW
Battery
FL MAIN2. 0L
IG1Relay
1
2
1
2
W–B
W–B
W–B
Open
Close
LS1 LS2 MTR+ MTR– GND
E IG STP
SLS+ SLS–
Shift LockSolenoid
100A ALT
J 6
J 7
I10
S 5
M 3
LS2
LS1
Ignition SW
JunctionC
onnector JunctionConnector
Moon Roof Motor and Limit SW
Shift LockControl ECU
10A GA
UG
E
2
IG
IF4 IH10 IE1 IE2
IF12 IF2 IA1 IF9
3B5
3B7
3A11
3A16
IG
A
W–B J 7
JunctionC
onnector
B
P/W
Relay
B–W
3
5
2
1
Moon Roof Control Relay and SWM 2
A
W–B
Up
Down
M
Behind the CombinationMeter
Right Kick Panel Right KickPanel
2004 CO
RO
LLA (E
WD
533U)
3 421
19 COROLLA
IB1
25AAM1
IF12
1
ACC
IG1AM1 2
IE
ABattery
FL MAIN2. 0L
WW
B
L
W–B
P ow er S ource Sea t B elt W arn ing
W B–Y
JunctionConnector
J 6
4B21
4B18
W–B
2 IF
IG2
Ignition SWI10
1A1
100AALT
1
2
1C11D1
2
1
3
5
10A GA
UG
E
IG
A
JunctionConnector
J 7
W–B
IH10
IG1 R
elay
W–B
IF4
W–B A
W–B
W
IA1
W
4C20
4C19
L–WL–W
15ADOME
1
1
2
L–W
Interior LightS
ystem<
9–3>
L–B
* 2 : w/o Door Lock Control* 1 : w/ Door Lock Control
Buzzer SeatBelt
16211217116
4 5
L–W
Combination MeterC 9
3B22 3B16
3B11
R–W
R–W
R–W
R–W
Buckle S
W R
H<
13–1>
G–Y
Buckle S
W LH
<13–2>
EB
C
C
5 II2
JunctionConnector
J 3
BR
BRB
R
4A15
4A14
L–B
1
2
4A16
L–B
L–B
W–B
A
Integration Relay
<15–8>
(*1 )
(*2 )
(*1 )
(*1 )
UnlockWarning SW
U 1
Ligh tReminder B uzzer
K ey Reminder B uzzer
Front Passenger SeatBelt W
arning Light
F 7
L
L–B(*1)
L–B
(*3 )TVIP E
CU
<16–4>
* 3 : w/ TVIP System* 4 : USA* 5 : Canada
L–W
4 IL
7 IC
15ATAIL
IH7
2
1
5
3
3 3
3 3
10
13
Taillight System<6–1>
G–WG–W
G–W
G
GG
18
(*4)(*4)
(*5)
(*4)
(*5 )
OFF
Tail
Head
E T
LightC
ontrol SW
Com
bination SWC
12
TAILRelay
G–W
G–W
(*4 )
(*5 )
3
1
Right Kick Panel Left Side of theCylinder Head
Behind the CombinationMeter
PA
SSE
NG
ER
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
20 COROLLA
IB1
25AAM1
1
ACC
IG1AM1
3 L–R
W
Battery
FL MAIN2. 0L
15ACIG
RightLeftRightLeft
Right/Down
Left/Up
DownUpRightLeft
8
B
5 2 4 3 6 7
HL HR VL VR M+ E
LGL R
R–W
1 3 1 3
22
IE
A
W–B
BR–W
R–WL
RLG
W–B
BR–W
BR–W
BR–W
BR–W
GR
Remote C on trol M irro rP ow er S ource
GR
OperationSW
SelectSW
BR
–W
BR
–W
BR
–W
R LG
1A1
1
2
1C1
100A A
LT
R 6
I10
J 6
R17
R18
10 IC2 8 IC2 10 IJ1 8 IJ1
9 IJ1 9 IC2
WB
M MMM
M+ M+
MH MV MH MV
Ignition SW
JunctionConnector
Remote Control Mirror SW
Rem
ote Control M
irror LH
Rem
ote Control M
irror RH
IF12
3C16
3C14 3C15
IF8 3A10
IF6 3A8
4B22
4B21
Behind the CombinationMeter
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
21 COROLLA
1A1
100A ALT
1
2
1C1
1
ACC
IG1AM1
3
IB1
25A A
M1
FL MA
IN2. 0L
Battery
WW
15A C
IG
IE
A
2
1
IG
Pow er S ource C iga rette L igh ter P ower O utle t
L–R
W–B
L
B
C 5
J 6
I10
1
2
5
3
P–POINTRelay
3 3
3 3
A
W–B
W–B
1
2
1 IF1
L–YL–Y
W–B
P 4
J 7
CigaretteLighter
Ignition SW
JunctionConnector
JunctionConnector
PowerOutlet(Rear)
IE
AJ 6JunctionConnector
IF6
IF8
IF12
3A9
3A10 3A6
2 IF1
GR
W–B
3A12
3A11
GR
L
15A P
/PO
INT
IH6
GR
GR
1
15A D
OM
E
IL4
IC7
1
10A HO
RN
3A5
4C20
4C16
4 1
3 2
3A18
ClockC 7
G
W–B
L–W
GR
TAIL Relay (U
SA)
Com
bination SW
(Canada )
<8–4>
W–B
C lock
2
1
3
5
HORNRelay
1 1
1 1
18 IA5
4A134A11
4A12
1
Horn
B–W
B
G–Y
G–Y
G–Y
G–Y
G–Y
G–Y
G–Y
CombinationSW
C10
(*1 )
(*1 )
(*2 )
(*1 )(*3 )
(*1)
H orn
TVIP ECU<16–3>
IntegrationRelay<15–7>
Horn
H 6
B–W
* 1 : w/ Wireless Door Lock* 2 : w/o Wireless Door Lock* 3 : TVIP System
L–W
B–W
1
2
L–W
L–W
1
* 4 : w/ Cigarette Lighter* 5 : w/o Cigarette Lighter
(*4 )(*4 )
W–B
1
2
GR
C 5PowerOutlet(Front)
A
(*5 )(*5 )
GR(*5)
Behind the CombinationMeter
Right Kick Panel Behind the Combination Meter
1
2
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
22 COROLLA
1A1
100AALT
1D1
25AAM1
1
ACC
IG1AM1 2
IF12 IF2 IA1 IL8 IM4
IB1
IF4 IH10 IG2
B
Battery
FL MAIN2. 0L
1C1
WW
2
1
3
5
10AGAUGE
40ADEFOG
3B14
3B22
1
2
3
5
IL10
IE BJIGIE
AA
W
B–Y
W
W–B
W–B
R–W B
BB
W
B
W–B
Rear WindowDefogger SW
R 5
Ignition SWI10
Noise Filter
(Rear W
indow D
efogger )
N 2
IG1Relay
DE
FR
elay
JunctionConnector
J 7
4
1
2
NoiseFilter
1
B
Engine C
ontrolM
odule<3–6>
2
1
1
2
10A M
–HTR
/DE
F I–UP
8 ID1
P ow er S ource R ear W indow D efogger
D
1 A
1 B
Rear W
indow D
efoggerR
15 (A), R
16 (B )
2
E
5
IG
R–W
B
Behind the CombinationMeter
Right Kick Panel Behind the CombinationMeter
Under the RightQuarter Pillar
JunctionC
onnector
J 6
2004 CO
RO
LLA (E
WD
533U)
1 2 3
23 COROLLA
GR
P ow er S ource R adio and P layer
4
1
100A ALT
2
1 1A
1C1
1 IB
25A AM
1
B
15A C
IG
Battery
FL MAIN2. 0L
WW
I10
15A DO
ME
2
1
1R 3(A), R 4(B)
1
ACC
IG1
IG2
ST2
AM1
3
AM2
Ignition SW
Radio and Player
3A10
3A7
IC7
IF12IL4
IF6
IF8
3 A
ACC
1 2
2 B 6 B
4 A
+B
3IC24
21
IC2
A6A2
1 2
IJ1
1 2
4 IJ1
2
3
1 A
1
5 A
21
B3B1
2 ID1 6 ID1
IF
7 A
1
4C17
4C20
8 A
ANT+
GND FL+ FL– FR+ FR– RL+ RL– RR+ RR–
Antenna A
mplifier
A17
GR
L–W
B
YBLLGVP
R W
LLG
YB
LLGVP
BR
L–W
L–R
F 8
T 4
Front DoorSpeaker LH
Tweeter LH
F 9
T 5
Front DoorSpeaker RH
Tweeter RH
R13Rear DoorSpeaker LH
R14Rear DoorSpeaker RH
L–W
10 A 5 B
Illumination
System
<8–2>
ILL+ ILL–
* 1 : w/ Tweeter* 2 : w/o Tweeter
ID15ID11
R W
VP V(*2 )
P(*2 )
(*1 )
(*1 )
L(*2 )
LG(*2 )
L–W
(*1 )
(*1 )
Behind the CombinationMeter
(*1 )
(*1 )
(*1 )
(*1 )
1 BE1 2 BE1 1 BF1 2 BF1
L(*1 )
LG(*1 )
L(*1 )
LG(*1 )
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
24 COROLLA (Cont. next page)
1
ACC
IG1
IG2
ST2
AM1 2
65 AM2
IA1
2
1
3
5
10A G
AU
GE
IG1 R
elay
B–Y
IE
14 IA6
A
5 II2
Pow er Source C omb ination M e ter
B–W
W–G
R–W
R–WL–W
L–W
BR
B–O
W–B
W–G
Headlight S
ystem<
4–7>
B
BR
Speedom
eter
Tachometer
Fuel
Temp.
Fuel
Door
High B
eam
Out Side Temp. ODO/TRIP
Buzzer
Headlight
System
<4–7>
V–W
Y–R B
R
BR
BR(w
/o ABS
)
EB
BR
C 9
A
2 IF 2 IG
4 IF
B–Y
J 6
I10
1A1
100A ALT
1
15A DO
ME
2 2
1C11 1 1D
1
IB1
25A AM
1
FL MA
IN2. 0L
Battery
WL–W
W
BL–W
12 IF4 IL
IC7
30A M
AIN
2
1
1
B–R
IM3
B–W
W
B
Combination MeterIgnition SW
JunctionC
onnector
IM6
13 ID2
C A
C B C B
4C20
4C19
22116199108172013
4514
22 3B
3B16
3B20
R–W
R–W
B A
C B
14 II2
Engine Control
Module<
3–7>
1 3 2
4C8
4C9 4C7
V–W
V–W
Engine Control
Module<
3–10>
Cruise C
ontrolEC
U<
11–4>
R–W
R–W
W–G
BR
(w/o A
BS)
Vehicle S
peedS
ensor(C
ombination
Meter )
V 1
(w/o A
BS )
(w/o A
BS)
(w/o A
BS)
(w/o A
BS)
Junction Connector
J 4 (A), J 5 (B )
W
15A AM
2
2 IA4
B–R
Junction Connector
J 2 (A ), J 3 (B)Skid C
ontrol ECU
with A
ctuator<
12–4>
Engine Control
Module<
3–10>
4 II2
A W–BW–B
B
7
3
2
YY
ID25
Fuel SenderF10
12
Seat Belt WarningSystem<19–3>
11
W–G
(w/o A
BS)
8IK
5IL
Interior LightSystem
<9–3>
Key Rem
inder BuzzerLight R
eminder
Buzzer<19–3> W
–G(w
/ ABS
)
Key Rem
inder BuzzerLight R
eminder Buzzer
<19–4>
ODO/TRIP
W–G(w/o ABS)
Behind the CombinationMeter
Left Side of theCylinder Head
W–G
(w/ AB
S)
2004 CO
RO
LLA (E
WD
533U)
5 6 7 8
24 COROLLA (Cont’ d)
Combina tion M ete r
26
2
1
BB
3 IA6
A 7Am
bient Temp.
Sensor
IA5L–W
EA
B–L
W–B
18
15
33 37
4B
30 2135
(w/o ABS)
B
13 IA6
Seat
Belt
B–L
21 4B
23
Cruise C
ontrol System
<11–1>
CR
UIS
E
R–W
31
SR
S
Charge
Brake
ABS
O/D
OFF
Malfunction
Indicator Lamp
BW–B
Turn Signal and
Hazard W
arningLight S
ystem<
5–3>
ED
2
B
3 II2
W–B
R–W
R–W
W–B
W
R–W
WR–W
R–W
B–O
Seat Belt W
arningS
ystem<
19–3>
Charging System
<2–2>
Engine Control S
ystem<
3–3>
ElectronicallyC
ontrolled Transmission
System<
10–6> (w/o ABS)(w/ A
BS )
B
1
Daytime Running Light Relay<4–4>
Turn LH
Turn RH
Oil Pressure
A
1
B–O
34 3 362
17 IA5
(w/o ABS)
6
Washer Level S
ensor
322524
W 1
1
W–B
L–W
(w/o AB
S)
C 9
Washer Level
2
O 1
B 2
J 1
Brake Fluid LevelW
arning SW
Combination Meter
JunctionConnector
Oil Pressure S
W
10 IA6
39
SRS System<13–6>
5 IA6
W–R
16 IA5
R
Illumination
18
Illumination
System
<8–4>
Illumination
System<
8–4>
28
W–B
EA
(w/o AB
S)
W–B
(w/o AB
S)
W–B
(w/o AB
S)
Front RightFender
Front RightFender
Front LeftSuspension Tower
(Canada )
(Canada )
(Canada )
AB
S System
<12–2>
(w/ AB
S)
(w/ AB
S)
AB
S System
<12–2>
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
25 COROLLA
P ow er S ource R ad ia tor Fan
1
100A ALT
2
1 1A
1C1
1 IB
25A A
M1
1 2
2
1
5
3
10A EC
U–IG
IG1 R
elay
B–Y
W
W
B
Battery
FL MAIN2. 0L
IEW
–B
A
2
30A RD
I FAN
1
1
2
1
3
5
1
1
1
1
FANNO. 1Relay
1
2
M
2
1
5
3
4
1 1
1 1
1
1
2
2
3
EA
CF
6
FAN
7
B–W
LG
B–R
L–W
W–B
LG–B
W–R
B–W
B–W
LG–BLG–B
W–B
W–B
W–B
LG
FANNO. 2Relay
W–R
B–R
B–W
ACC
IG1AM1
1IA
11D
W
B–W
I10
J 6
E 6
R 1
P 2
R 2
Engine C
ontrolM
odule
Ignition SW
JunctionConnector
Pressure S
W
RadiatorFan Motor
Radiator Fan R
esistor
Single
7 IA5 6 IA5
IF12
IC13IF2
IF4
LG
LG–B
ED
W–B
W–B
Behind the CombinationMeter
Front RightFender
Front LeftSuspension Tower
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
26 COROLLA
1
1
ACC
IG1AM1 2
2
1
3
5
40A H
EA
TER
10A G
AUG
E
IG1Relay
2
IE
W–B
A
1 3
5
4
10A A
/C
R–W
R–W
B–W B
OFFLOM1
4 1 2
5
M2HI
A
IG
2
1
M
4 EA1
2
1
3
5
1 1
1 1
4
1
A
Y–B
Y
G–W
B–L
Y
W–B
W–B
W–B
L–W
B
B–W
B–W
B–W
L–W
L–W
M/G
CLT
Relay
P ower S ource A ir C onditioning
6
PRS THR
ACMGA/CSACLD
B–YP 2
E 3(A), E 5(C)
A
J 7
B 5
Y–B
W–B
B 3
B
IA1
21A1
100A ALT
1
2
1D1 1 1C
IB1
25A AM
1
W
FL MAIN2. 0L
Battery
W
W
B
I10
Engine ControlModule
Blower M
otor
Blower SW
Ignition SW
JunctionConnector
Pressure SW
1 A/C M
agnetic Clutch
A 1
B–W
Dual
IF2 IF7
IF12
IF4 IG2 IM2 IM5
3B22
3B12
HTR
Relay
3 3 3
3 3
JunctionConnector
J 6 AW–B
R
L–W
B–W
1 IH1 2 IH1 6 IH1 5 IH1
7 IA6
2 C31 C33 C
8 EA1
EA
13 A 32 C
Y
4 IH1
3 IH1
A/C
Thermistor
18 3B
R–W
W–B
3A11
3A20
B
A28
BR
E2
F
F
II21
BR
BR
JunctionC
onnector
J 3
B3B13
R–W
R–W
W–B
W
Behind the CombinationMeter
Right KickPanel
Front RightFender
3469 7 8W
–B
2 1R
–W
M
G–W
5
FRS
RE
C
On
A/C
SW
Off
AINDGNDRECFRSIG A/C
FRS REC GND
FRS
REC
Air Inlet
Control S
W
Air Inlet Control
Servo Motor
A11
L–W
B/L
FOOT
F/D
FACE
DEF
Defroster M
odeD
etection SW
IC3
L–W
A/C SWA 8
Air Inlet Control SWDefroster Mode Detection SW
2
B
+IG
B
Blower ResistorB 4
1 3 2 4
B–W
L–B R
W–B
BB
2004 CO
RO
LLA (E
WD
533U)
1 2 3 4
27 COROLLA
1
1
ACC
IG1AM1 2
2
1
3
5
40A H
EA
TER
10A G
AUG
E
IG1Relay
2
IE
W–B
A
1 3
5
4
R–W
R–W
B–W
OFFLOM1
4 1 2
5
M2HI
A
IG
2
1
M
W–B
W–B
W–B
L–W
B–W
B–W
P ower S ource H ea ter
6
B–Y
AJ 7
B 5
B 3
IA1
21A1
100A ALT
1
2
1D1 1 1C
IB1
25A AM
1
W
FL MAIN2. 0L
Battery
W
W
B
I10
Blower M
otorBlower Resistor
Blower SW
Ignition SW
JunctionConnector
IF2
IF12
IF4 IG2 IM2
3B22
3B12
HTR
Relay
3 3 3
3 3
JunctionConnector
J 6 AW–B
R
L–W
B–W
1 IH1 2 IH1 6 IH1 5 IH1
B
B
W
13 3B
18 3B
W–B
A
R–W
R–W
R–W
69 7 8
W–B
2 1
R–W
M
G–W
5
FRS
RE
C
GNDRECFRSIG
FRS REC GND
FRS
RECA
ir InletC
ontrol SW
Air Inlet Control
Servo Motor
A11
L–W
+IG
Behind the CombinationMeter
Right KickPanel
Air Inlet Control SWA 8
B 4
1 3 2 4
B–W
L–B R
W–B
3A20
3A11
W–B
W–B