PUMPCONTROL

VALVE

OILFILTER

OILCOOLER

HEUI

HEUI

OILSUMP

HYDRAULICPRESSURE

SENSOR

HYDRAULICTEMPERATURE

SENSORCOLD START

OILRESERVOIR OIL PRESSURE

SENSOR

HYDRAULICSUPPLY

PUMPGROUP

COOL DOWNCIRCUIT

FUEL TANK

FUELTEMPERATURE

SENSOR

PRESSUREREGULATING

VALVE

SECONDARYFUEL

FILTER

FUELTRANSFER

PUMP

PRIMARYFUEL FILTER

WATERSEPARATOR

LUBE OILPUMP

TO LUBESYSTEM

3408E/3412E HEUI FUEL SYSTEM

FLUID MANIFOLDHYDRAULIC PASSAGE

FLUID MANIFOLDHYDRAULIC PASSAGE

ECM

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY

KEYSWITCH

TURBO OUTLET PRESS. SENSOR

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

PUMP CONTROL VALVE

COOLANT TEMP. SENSOR

ATMOSPHERIC PRESS. SENSOR

OIL PRESSURE SENSOR

HYDRAULIC TEMP. SENSOR

FUEL TEMPERATURE SENSOR

COOLANT FLOW SWITCH

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

INSTRUMENTPANEL

AUTO RETARDER CONTROL

EPTC II TRANSMISSION CONTROL

ELECTRONIC SERVICE TOOL

CAT DATA LINK

FAN

FAN SPEED SENSOR

FAN CONTROL VALVE

TURBO INLET PRESSURE SENSOR

THROTTLE BACK-UP, ELEVATED LOW IDLE ENABLE,AND GROUND LEVEL SHUTDOWN (2) SWITCHES

THROTTLESENSOR ACCELERATOR

PEDAL

DISCONNECT SWITCH

3408E/3412E HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

ELECTRONIC CONTROL SYSTEM

393229381812

732-PK996-GN998-BR999-WHF723-PKF724-PU

SECONDARY ENGINE SPEED+V TIMINGDIGITAL RETURNPRIMARY ENGINE SPEEDTIMING CAL +TIMING CAL -

ECM(3408E/3412 E)

P2 J2

ABC

ORBKWH

SECONDARYSPEED/TIMING

SENSOR

ABC

ORBKWH

PRIMARYSPEED/TIMING

SENSOR

TIMING CALIBRATIONCONNECTOR

12

SPEED/TIMING SENSORS

P44 J44

P20 J20

P26 P1 J1

4

3

6

5

7

2

1

8

REF

REF

REF

REF

REF

REF

REF

REF

TDCTDC

TDC

TDCTDC

TDC

TDC

SINGLE50/50 TOOTH

TIMING WHEELROTATION

TDC CYLINDER No. 1

TIMINGCALIBRATIONRANGE ± 10°

PRIMARYSPEED/TIMING

SENSOR

SECONDARYSPEED/TIMING

SENSOR

TIMING WHEEL

PUMPCONTROL

VALVE

OILFILTER

OILCOOLER

HEUI

HEUI

OILSUMP

HYDRAULICPRESSURE

SENSOR

HYDRAULICTEMPERATURE

SENSORCOLD START

OILRESERVOIR OIL PRESSURE

SENSOR

ECM

HYDRAULICSUPPLY

PUMPGROUP

COOL DOWNCIRCUIT

FUEL TANK

FUELTEMPERATURE

SENSOR

PRESSUREREGULATING

VALVE

SECONDARYFUEL

FILTER

FUELTRANSFER

PUMP

PRIMARYFUEL FILTER

WATERSEPARATOR

LUBE OILPUMP

TO LUBESYSTEM

3408E/3412E HEUI FUEL SYSTEM

FLUID MANIFOLDHYDRAULIC PASSAGE

FLUID MANIFOLDHYDRAULIC PASSAGE

TO LUBESYSTEM

FUELTRANSFER

PUMP

PUMPCONTROL

VALVE

OILFILTER

3408E/3412E HEUI FUEL SYSTEM

OILCOOLER

HEUI

HEUI

OILSUMP

HYDRAULICPRESSURE

SENSOR

HYDRAULICTEMPERATURE

SENSOR

OIL PRESSURESENSOR

ECM

COOL DOWNCIRCUIT

LOW PRESSURE OIL (HYDRAULIC) SUPPLY

FUEL TANK

FUELTEMPERATURE

SENSOR

PRESSUREREGULATING

VALVE

SECONDARYFUEL

FILTERPRIMARY

FUEL FILTERWATER

SEPARATOR

LUBE OILPUMP

COLD STARTOIL

RESERVOIR

HYDRAULICSUPPLY

PUMPGROUP

FLUID MANIFOLDHYDRAULIC PASSAGE

FLUID MANIFOLDHYDRAULIC PASSAGE

TO LUBESYSTEM

FUELTRANSFER

PUMP

PUMPCONTROL

VALVE

OILFILTER

3408E/3412E HEUI FUEL SYSTEM

OILCOOLER

HEUI

HEUI

OILSUMP

HYDRAULICPRESSURE

SENSOR

HYDRAULICTEMPERATURE

SENSOR

OIL PRESSURESENSOR

HYDRAULICSUPPLY

PUMPGROUP

COOL DOWNCIRCUIT

HIGH PRESSURE HYDRAULICS

FUELTEMPERATURE

SENSOR

ECM

FUEL TANK

PRESSUREREGULATING

VALVE

SECONDARYFUEL

FILTERPRIMARY

FUEL FILTERWATER

SEPARATOR

LUBE OILPUMP

COLD STARTOIL

RESERVOIRFLUID MANIFOLD

HYDRAULIC PASSAGE

FLUID MANIFOLDHYDRAULIC PASSAGE

TO LUBESYSTEM

FUELTRANSFER

PUMP PRESSUREREGULATING

VALVE

PUMPCONTROL

VALVE

OILFILTER

3408E/3412E HEUI FUEL SYSTEM

OILCOOLER

LUBE OILPUMP

HEUI

HEUI

OILSUMP

HYDRAULICPRESSURE

SENSOR

HYDRAULICTEMPERATURE

SENSOR

OIL PRESSURESENSOR

ECM

COOL DOWNCIRCUIT

LOW PRESSURE FUEL SUPPLY

FUELTEMPERATURE

SENSOR

FUEL TANK

SECONDARYFUEL FILTER(2 MICRON)

PRIMARYFUEL FILTER

WATERSEPARATOR

COLD STARTOIL

RESERVOIR

HYDRAULICSUPPLY

PUMPGROUP

FLUID MANIFOLDHYDRAULIC PASSAGE

FLUID MANIFOLDHYDRAULIC PASSAGE

LOW PRESSUREFUEL SUPPLY

CYLINDER HEADINJECTOR SLEEVE

FLUID SUPPLYMANIFOLD

INJECTOR

INJECTOR OILADAPTER

JUMPER TUBE

INJECTOR CLAMP

HIGH PRESSUREHYDRAULIC PASSAGE

CYLINDER HEAD

ROCKER ARM BASE

LUBE OIL PASSAGE

CYLINDER BLOCKCOOLANT

METAL WASHER

INJECTOR FLUID FLOW HIGH PRESSURE HYDRAULIC OIL

FLUID SUPPLYMANIFOLD

INJECTOR

CYLINDERHEAD

LOWER INJECTORO-RING SEAL

UPPER INJECTORO-RING SEAL

INJECTOR FUEL SUPPLY

METAL-TO- METALCONTACT

LOW PRESSUREFUEL SUPPLY

CYLINDER HEADINJECTOR SLEEVE

UPPER SLEEVEO-RING SEAL

LOWER SLEEVEO-RING SEAL

LOW PRESSUREFUEL SUPPLY PASSAGE

CYLINDER HEADINJECTOR SLEEVE

HIGH PRESSUREHYDRAULIC PASSAGE

ROCKER ARMBASE

LUBRICATION OILPASSAGE

EXTRACTORSPLINES

FUEL SEALS

FLUID SUPPLY MANIFOLD

INJECTION CURRENT WAVEFORM

0 1 2 3 4

CU

RR

EN

T F

LO

W

TIME (MILLISECONDS)

PULL-IN PEAK CURRENT

HOLD-IN PEAK CURRENT

ONE CYCLE

5

WAVEFORM AND RESPONSE CHARACTERISTICS

0 1 2 3 4

CU

RR

EN

T F

LO

W

TIME (MILLISECONDS)

CURRENT

POPPETLIFT

INJECTIONRATE

START OFINJECTION

DURATION

5END OF

INJECTION

HEUI UNIT INJECTOR

3 MAIN GROUPS

VALVE BODYGROUP

BARREL GROUP

NOZZLE GROUP

HORIZONTALBOLTS

JUMPER TUBE

INJECTOR CLAMP

VERTICALBOLTS

INJECTOR INSTALLATIONALLEN

SCREWS

INJECTOR OILADAPTOR

PRIMING PORT

ORIFICE

RESERVOIR

SWASHPLATE

TRANSFER PUMP

COMPENSATORVALVE

HEUI PUMP

VALVE BASE

DRAIN PASSAGE

TO LUBESYSTEM

FUELTRANSFER

PUMP

PUMPCONTROL

VALVE

OILFILTER

OILCOOLER

HEUI

HEUI

OILSUMP

HYDRAULICPRESSURE

SENSOR

HYDRAULICTEMPERATURE

SENSOR

OIL PRESSURESENSOR

ECM

COOL DOWNCIRCUIT

COOL DOWN BYPASS CIRCUIT

FUEL TANK

FUELTEMPERATURE

SENSOR

PRESSUREREGULATING

VALVE

SECONDARYFUEL

FILTER

LUBE OILPUMP

PRIMARYFUEL FILTER

WATERSEPARATOR

FLUID MANIFOLDHYDRAULIC PASSAGE

HYDRAULICSUPPLY

PUMPGROUP

COLD STARTOIL

RESERVOIRFLUID MANIFOLD

HYDRAULIC PASSAGE

DRAIN

.020 IN.ORIFICE

CHECKFITTING SPRINGVALVE BLOCK SEAT

REVERSE FLOW CHECK VALVE

FROMPUMPTO

INJECTORS

SEAT(END VIEW)

ADAPTER CAGE

RINGSHELLPIN

STATOR

SEAL SEATPOPPETVALVE

SOLENOIDARMATURE

STOP

TOCASE DRAIN

FROM LOADSENSING SPOOL

VALVE

VALVEBLOCK

NO CURRENT FLOW

COILASSEMBLY

PUMP CONTROL VALVE

EDGE FILTER

SPRINGRETAINER

ADAPTER CAGE

RINGSHELLPIN

STATOR

SEAL SEATPOPPETVALVE

SOLENOIDARMATURE

STOP

COILASSEMBLY

EDGEFILTER

SPRINGRETAINER

FROM LOADSENSING SPOOL

VALVE

VALVEBLOCK

HIGH CURRENT FLOWPUMP CONTROL VALVE

TOCASE DRAIN

HEUI SYSTEM POWER SUPPLIES

• ECM: 24 VOLTS

• INJECTORS: 105 VOLTS

• ANALOG SENSORS: 5 VOLTS

• SPEED/TIMING SENSORS: 12.5 VOLTS

• DIGITAL SENSORS: 8 VOLTS

• PUMP CONTROL VALVE: 0 to 24 VOLTS

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY

KEYSWITCH

TURBO OUTLET PRESS. SENSOR

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

PUMPCONTROL VALVE

COOLANT TEMP. SENSOR

ATMOSPHERIC PRESS. SENSOR

OIL PRESSURE SENSOR

HYDRAULIC TEMP. SENSOR

FUEL TEMPERATURE SENSOR

COOLANT FLOW SWITCH

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

INSTRUMENTPANEL

AUTO RETARDER CONTROL

EPTC II TRANSMISSION CONTROL

ELECTRONIC SERVICE TOOL

CAT DATA LINK

FAN

FAN SPEED SENSOR

FAN CONTROL VALVE

TURBO INLET PRESSURE SENSOR

THROTTLE BACK-UP, ELEVATED LOW IDLE ENABLE,AND GROUND LEVEL SHUTDOWN (2) SWITCHES

THROTTLESENSOR ACCELERATOR

PEDAL

DISCONNECT SWITCH

3408E/3412E HEUI SYSTEMECM POWER SUPPLY COMPONENTS

MACHINEHARNESS

0511040623

ECM(3408E/3412E)

(-) BATTERY(-) BATTERY(+) BATTERY(+) BATTERYKEY SWITCH ON

229-BK-14229-BK-14150-RD-14150-RD-14113-OR

12

26

24 VOLTS DC

(+)

(-)

ENGINE BLOCKGROUND BOLT

CIRCUIT BREAKER

BATTERY

R

CSB ST

OFFON

308-YL

200-BK

105-RD

KEY SWITCH

112-PU

117-RD

113-OR

15 A

10 AMPP3 J3

P1 J1

ECM POWER SUPPLY CIRCUIT

DISCONNECTSWITCH

393229381812

732-PK996-GN998-BR999-WHF723-PKF724-PU

SECONDARY ENGINE SPEED+V TIMINGDIGITAL RETURNPRIMARY ENGINE SPEEDTIMING CAL +TIMING CAL -

ECM(3408E/3412E)

P2 J2

ABC

ORBKWH

SECONDARYSPEED/TIMINGSENSOR (LH)

ABC

ORBKWH

PRIMARYSPEED/TIMINGSENSOR (RH)

SPEED/TIMING SENSOR POWER SUPPLY12.5 ± 1 VOLTS

P44 J44

P20 J20

P1 J1

160532

A701-GYF726-YLA703-BRF726-YL

P2 J2

INJECTOR WIRING SCHEMATIC

SOLENOID 1 POWERSOLENOID 1/3 RETURNSOLENOID 3 POWER

ECM(3408/3412E)

401134

A702-PUF727-BUA704-GNF727-BU

SOLENOID 2 POWERSOLENOID 2/4 RETURNSOLENOID 4 POWER

321738

A705-BUF728-BRA707-PUF728-BR

SOLENOID 5 POWERSOLENOID 5/7 RETURNSOLENOID 7 POWER

282122

A706-GYF729-GNA708-BRF729-GN

SOLENOID 6 POWERSOLENOID 6/8 RETURNSOLENOID 8 POWER

372731

A709-ORF730-GYA711-PUF730-GY

SOLENOID 9 POWERSOLENOID 9/11 RETURNSOLENOID 11 POWER

183312

A710-GYF731-ORA712-BRF731-OR

SOLENOID 10 POWERSOLENOID 10/12 RETURNSOLENOID 12 POWER

1234

SOLENOID 1

SOLENOID 3

J52/P52

1234

SOLENOID 2

SOLENOID 4

J56/P56

1234

SOLENOID 5

SOLENOID 7

J53/P53

1234

SOLENOID 6

SOLENOID 8

J57/P57

1234

SOLENOID 9

SOLENOID 11

J54/P54

1234

SOLENOID 10

SOLENOID 12

J58/P58

P22 J22

ENGINE COOLANTTEMPERATURE SENSOR

ENGINE OILPRESSURE SENSOR

+V ANALOGANALOG RETURNSIGNAL

+V ANALOGANALOG RETURNSIGNAL

P23 J23

TURBO OUTLETPRESSURE SENSOR

+V ANALOGANALOG RETURNSIGNAL

P25 J25

TURBO INLET PRESSURE SENSOR

+V ANALOGANALOG RETURNSIGNAL

P27 J27

ATMOSPHERICPRESSURE SENSOR

+V ANALOGANALOG RETURNSIGNAL

P45 J45

HYDRAULICPRESSURE SENSOR

+V ANALOGANALOG RETURNSIGNAL

3630

ANALOG SENSORPOWER SUPPLY

P1 J1

P43 J43

+V ANALOGANALOG RETURNSIGNAL

FUEL TEMPERATURE SENSOR

P51 J51

+V ANALOGANALOG RETURNSIGNAL

HYDRAULIC OILTEMPERATURE SENSOR

ABC

ABC

ABC

ABC

ABC

ABC

ABC

ABC

J21 P21

5 ± 0.2 VOLTS

ECM (3408E/3412E HEUI)+V ANALOG SUPPLYANALOG RETURN

ECM (3408E/3412E HEUI)+ V DIGITAL SUPPLY- V DIGITAL RETURN

2935

DIGITAL SENSORPOWER SUPPLY

P1 J1

ABC

J35 P35

ABC

P84 J84+V DIGITAL

DIGITAL RETURNSIGNAL

FAN SPEED SENSOR

THROTTLEPOSITION SENSOR

+V DIGITALDIGITAL RETURN

SIGNAL

8 ± 0.5 VOLTS

ECM (3408E/3412E HEUI)+ SUPPLY- RETURN

2935

P2 J2

AB

J46 P46

PUMP CONTROLVALVE

SUPPLY RETURN

PUMP CONTROL VALVEPOWER SUPPLY

0 to 24 VOLTS PWM0 to 800 mAmps

ELECTRONIC SENSORS AND SYSTEMS

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

ANALOG SENSORS

• Fuel temperature

• Hydraulic temperature

• Lubrication oi l pressure

• Turbocharger outlet pressure

• Turbocharger inlet pressure

• Atmospheric pressure

• Coolant temperature

• Hydraulic pressure

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

COOLANT TEMP. SENSOR

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

COOLANT TEMP. SENSOR

ATMOSPHERIC PRESS. SENSOR

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

100%

98%

96%

94%

92%

90%

88%

86%

84%

82%

80%

78%

76%

74%

77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53

8,210

8,920

9,630

10,340

11,050

11,760

12,470

13,890

14,600

15,310

16,020

16,730

17,440

13,180

7,500

72%

ENGINE POWER DERATING MAPACCORDING TO ATMOSPHERIC PRESSURE

ATMOSPHERIC PRESSURE IN kPa

PE

RC

EN

T O

F F

UL

L L

OA

D P

OW

ER

AL

TIT

UD

E IN

FE

ET

CAT

AUTOMATIC AIR FILTER COMPENSATION

TURBOCHARGERINLET PRESSURE

SENSOR

ATMOSPHERICPRESSURE

SENSOR

Filter differential pressure calculated with formula:Atmospheric sensor pressure - Turbo sensor pressure = ∆PFuel limited 2% per 4 inches H20 to max 20%

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

TURBO OUTLET PRESS. SENSOR

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

COOLANT TEMP. SENSOR

ATMOSPHERIC PRESS. SENSOR

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

TURBO INLET PRESSURE SENSOR

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

TURBO OUTLET PRESS. SENSOR

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

COOLANT TEMP. SENSOR

ATMOSPHERIC PRESS. SENSOR

OIL PRESSURE SENSOR

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

TURBO INLET PRESSURE SENSOR

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

OIL

PR

ES

SU

RE

IN k

Pa

600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 180060

80

100

120

140

160

180

200

220

240

260

280

300

ENGINE RPM

OIL PRESSURE MAP

1900

320

340

8.7

11.6

14.5

17.4

20.3

23.2

26.1

29

31.9

34.8

37.7

40.6

43.5

46.4

49.3

OIL

PR

ES

SU

RE

IN P

SI

kPa x 0.145 = PSI

2000

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

TURBO OUTLET (BOOST) PRESS. SENSOR

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

COOLANT TEMP. SENSOR

ATMOSPHERIC PRESS. SENSOR

OIL PRESSURE SENSOR

HYDRAULIC TEMP. SENSOR

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

TURBO INLET PRESSURE SENSOR

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

TURBO OUTLET PRESS. SENSOR

BACKUP CAMSPEED/TIMING SENSOR

PRIMARY CAMSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

COOLANT TEMP. SENSOR

ATMOSPHERIC PRESS. SENSOR

OIL PRESSURE SENSOR

HYDRAULIC TEMP SENSOR

FUEL TEMPERATURE SENSOR

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

TURBO INLET PRESSURE SENSOR

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

TURBO OUTLET PRESS. SENSOR

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

COOLANT TEMP. SENSOR

ATMOSPHERIC PRESS. SENSOR

OIL PRESSURE SENSOR

HYDRAULIC TEMP. SENSOR

FUEL TEMPERATURE SENSOR

COOLANT FLOW SWITCH

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

TURBO INLET PRESSURE SENSOR

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

• Throttle Position

• Pump Control Valve Signal

• Exhaust Temperature

DIGITAL SENSORS AND CIRCUITS

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

TURBO OUTLET PRESS. SENSOR

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

COOLANT TEMP. SENSOR

ATMOSPHERIC PRESS. SENSOR

OIL PRESSURE SENSOR

HYDRAULIC TEMP. SENSOR

FUEL TEMPERATURE SENSOR

COOLANT FLOW SWITCH

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

TURBO INLET PRESSURE SENSOR

THROTTLESENSOR

ACCELERATORPEDAL

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

90%

ON

OFF

ON

OFF

ON

OFF

10%

50%

DUTYCYCLE

DUTY CYCLE = PERCENT OF TIME ON VS PERCENT OF TIME OFF

1 CYCLE

= 90%

DUTYCYCLE

= 50%

DUTYCYCLE

= 10%

PULSE WIDTH MODULATED SIGNALS

ADEM IIELECTRONIC

CONTROLMODULE

(ECM) GROUNDBOLT

15 AMPBREAKER

MAINPOWER RELAY KEY

SWITCH

TURBO OUTLET PRESS. SENSOR

SECONDARYSPEED/TIMING SENSOR

PRIMARYSPEED/TIMING SENSOR

HYDRAULICPRESSURE SENSOR

24 V

MACHINEINTERFACE

CONNECTOR

ENGINEHARNESS

PUMP CONTROL VALVE

COOLANT TEMP. SENSOR

ATMOSPHERIC PRESS. SENSOR

OIL PRESSURE SENSOR

HYDRAULIC TEMP. SENSOR

FUEL TEMPERATURE SENSOR

COOLANT FLOW SWITCH

8 OR 12INJECTORS

TDC SERVICEPROBE ACCESS

TURBO INLET PRESSURE SENSOR

THROTTLESENSOR

ACCELERATORPEDAL

DISCONNECT SWITCH

HEUI SYSTEMCOMPONENT DIAGRAM

MACHINEHARNESS

VIMS DISPLAY MODULES

COMMUNICATION

ADAPTER

7X1701

CONTROL SERVICE TOOL

SERVICETOOL

CONNECTOR CAT DATA LINK

VIM

SM

AIN

MO

DU

LE

ADEM IIELECTRONIC

CONTROLMODULE

(ECM)

LAPTOPCOMPUTER

CATELECTRONIC TECHNICIAN

D10R/988F/990 CAT DATA LINK CIRCUIT

89

POWERTRAIN CONTROLMODULE

Cat Data Link +Cat Data Link -

2324

CMS

Cat Data Link +Cat Data Link -

DEHJ

76

3132

9371

893-GN892-BRE794-YLE-793-BU

J42 P3 J3 P1 J1 ECM

Cat Data Link +Cat Data Link -ATA Data Link +ATA Data Link -

SERVICE TOOLCONNECTOR

MACHINE INTERFACECONNECTOR

PUMPCONTROL

VALVEOIL

COOLER

HEUI

HEUI

OILSUMP

HYDRAULICPRESSURE

SENSOR

HYDRAULIC OILTEMPERATURE

SENSORCOLD START

OILRESERVOIR OIL PRESSURE

SENSOR

ECM

HYDRAULICSUPPLY

PUMPGROUP

COOL DOWNCIRCUIT

FUEL TANK

FUELTEMPERATURE

SENSOR

PRESSUREREGULATING

VALVE

SECONDARYFUEL

FILTER

FUELTRANSFER

PUMP

PRIMARYFUEL FILTER

WATERSEPARATOR

LUBE OILPUMP

TO LUBESYSTEM

FLUID MANIFOLD

FLUID MANIFOLD

3408E/3412E HEUI FUEL SYSTEM

OILFILTER