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    Pro-Link/MPCAllison Transmissions

    Users Manual

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    Pro-Link/MPC Allison Transmissions

    NNT, Inc., retains all ownership rights to the Pro-Link/MPC and its documentation. The Pro-Link/MPC source

    code is a confidential trade secret of NNT, Inc.. You may not decipher or de-compile the Pro-Link/MPC

    applications, develop source code for the Pro-Link

    /MPC, or knowingly allow others to do so. The Pro-Link

    /MPCand its documentation may not be sublicensed or transferred without the prior written consent of NNT, Inc..

    This manual, as well as the software it describes, is furnished under license and may only be used or copied in

    accordance with the terms of such license. The content of this manual is furnished for informational use only, is

    subject to change without notice, and should not be construed as a commitment by NNT, Inc. NNT, Inc. assumes no

    responsibility or liability for any errors or inaccuracies that may appear in this book.

    Except as permitted by such license, no part of this publication may be reproduced, or transmitted, in any form or by

    any means, electronic, mechanical, or otherwise, without the prior written permission of NNT, Inc..

    NEXIQ Technologies is a trademark of NNT, Inc.

    2005 NNT, Inc. All rights reserved. All other marks are trademarks or registered trademarks of the respective

    holders. Pictures for illustration purposes only. Specifications are subject to change without notice.

    www.nexiq.com

    Rev: 12/05/2005

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    Pro-Link/MPC Allison Transmissions Users Manual iii

    Chapter 1:

    Using This Manual ................................................. 1

    Manual Overview........................................................................... 2

    Conventions................................................................................... 3

    Special Messages ................................................................................ 3

    Specialized Text ................................................................................... 5

    Chapter 2:

    Getting Started..................................................... 7

    Navigating Pro-LinkMenus and Screens.................................... 9

    Connecting to a Transmission Application .................................. 10

    Allison World Transmission ................................................................ 13

    Allison CEC Transmission .................................................................. 14

    Chapter 3:

    Using the WTEC Diagnostics Menu........................ 15

    Diagnostics Menu........................................................................ 16

    Diagnostic Data .................................................................................. 17

    Diagnostic Codes ............................................................................... 27

    Shift Inhibits ........................................................................................ 29

    I/O Wire States................................................................................... 32

    Clear Active Indicators........................................................................ 34

    Clear Inactive Codes.......................................................................... 35

    Action Requests ................................................................................. 36

    Trigger/Snapshot................................................................................ 44

    Chapter 4:

    Using the WTEC ECU/EEPROM Setup Menu............ 53The Setup Menu.......................................................................... 54

    ECU Calibration.................................................................................. 55

    View Customer Modifiable Constants................................................. 57

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    iv Pro-Link /MPC Allison Transmissions Users Manual

    Chapter 5:

    Using the WTEC Printout Option ........................... 61

    Using the Printout Option ............................................................ 62

    Chapter 6:

    Using the Allison CEC Application.......................... 65

    Diagnostic Data........................................................................... 66

    Diagnostic Codes ........................................................................ 67

    Snapshot ..................................................................................... 73

    Trigger On Specific............................................................................. 73

    Trigger On Any Code ......................................................................... 74

    Appendix A:

    PID Fault Code Descriptions................................. 75

    Appendix B:

    SID Fault Code Descriptions................................. 87

    Appendix C:

    MID Fault Code Descriptions ................................ 93

    Appendix D:

    FMI Fault Code Descriptions................................. 99

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    Pro-Link/MPC Allison Transmissions Users Manual v

    Appendix E:

    Warranty & Service ........................................... 101

    Exclusive Warranty.................................................................... 102

    Exclusive Remedy..................................................................... 102

    Return Materials Authorization (RMA)....................................... 103

    Return of Goods Policy.............................................................. 104

    Return Goods Authorization (RGA) Procedure ................................ 105

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    vi Pro-Link /MPC Allison Transmissions Users Manual

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    Pro-Link/MPC Allison Transmissions Users Manual 1

    1

    Using This Manual

    uManual Overview, page 2

    uConventions, page 3

    This chapter provides an overview of this manuals organization and the conventionsused thought out.

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    2 Pro-Link /MPC Allison Transmissions Users Manual

    Chapter 1 Using This Manual

    Manual OverviewThis manual provides basic and detailed information to support you in using the

    Pro-Link/MPC Allison Transmissions application.

    The manual is comprised of the following sections:

    Table of Contentshelps you to find the information you are looking for

    quickly and easily.

    Using This Manualprovides an overview of this users manual.

    Getting Startedprovides instructions on loading the Allison Transmis-

    sions applications (i.e., WTEC and CEC).

    Using the WTEC Diagnostics Menuprovides detailed instructions for

    accessing and using each of the Diagnostics menu options.

    Using the WTEC ECU/EEPROM Setup Menuprovides detailed in-

    structions for accessing and using each of the Setup menu options.

    Using the WTEC Printout Optionprovides detailed instructions for ac-

    cessing and using the Printout option.

    Using the Allison CEC Applicationprovides detailed instructions for ac-

    cessing and using each of the applications menu options.

    PID Fault Code Descriptions (Appendix) provides a table that com-

    pares SAE and ATA Parameter Identification (PID) descriptions withPro-LinkPID descriptions.

    SID Fault Code Descriptions (Appendix)provides a table that com-

    pares SAE and ATA System Identification (SID) descriptions with Pro-

    LinkSID descriptions used for MID 128.

    MID Fault Code Descriptions (Appendix)provides a table that com-

    pares SAE Microprocessor Identification (MID) descriptions with Pro-

    LinkMID descriptions.

    FMI Fault Code Descriptions (Appendix)provides a table that com-

    pares SAE Failure Mode Identifier (FMI) descriptions with Pro-LinkFMI

    descriptions.

    Warranty and Service (Appendix)provides warranty and service

    information.

    Each chapter is introduced by an at-a-glance list of the chapters contents, along

    with corresponding page numbers.

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    - Conventions

    Pro-Link/MPC Allison Transmissions Users Manual 3

    ConventionsDifferent conventions are used in this users manual to draw your attention to

    certain types of information. This section provides an overview of these

    conventions.

    Special Messages

    Notes

    NOTE provides explanations, comments, or tips related to the subject matter that

    is being discussed.

    Example:

    NOTE:

    i Refer to the page number provided for each described component for fur-ther details.

    Important

    IMPORTANT indicates a situation which, if not avoided, may result in damage to

    the test equipment or vehicle.

    Example:

    IMPORTANT:

    Keep all cables clear of moving or hot engine parts.

    Cautions

    CAUTION indicates a potentially hazardous situation which, if not avoided, may

    result in moderate or minor injury to the operator or to bystanders.

    Example:

    CAUTION:

    Do not use the unit to perform tests on household or industrial sources.

    Warnings

    WARNING indicates a potentially hazardous situation which, if not avoided, could

    result in death or serious injury to the operator or bystanders.

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    4 Pro-Link /MPC Allison Transmissions Users Manual

    Chapter 1 Using This Manual

    Example:

    WARNING:

    Wear gloves when handling hot engine components.

    Stop

    Information that needs to be considered before proceeding is presented in the fol-

    lowing manner:

    Troubleshooting

    Information intended to help you to address or anticipate potential issues are pre-

    sented in the following manner:

    Before using this application, be sure to read the Pro-LinkUsers Manual

    for:

    Important safety information

    Instructions on connecting the device to a vehicle

    Instructions on properly inserting an application card

    If the Loading Application message continuously appears, check the label

    on the card to verify you are using the appropriate card for the given manu-

    facturer/ECU.

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    - Conventions

    Pro-Link/MPC Allison Transmissions Users Manual 5

    Specialized TextThe following specially formatted text is used to help you to differentiate certain

    elements discussed within this manual:

    Emphasis:Used to draw your attention to particularly important

    information.

    Field/Line:Used to highlight the name of a field or a line of text from a

    display.

    Example: The Request Lampline updates to reflect the current

    request.

    Menu items:Used to highlight a series of menu selections.

    Example: From the Main Menu, select MPC UTILITIES4RS-232SERIAL PORT4TERMINAL SETUP....

    Screen titles:Used to highlight the title of a screen showing on the de-

    vicess readout window.

    Example: The display shows the Review Snapshotmenu, which lists

    the event captures at the bottom of the screen.

    Selection:Used to highlight a selectable item, such as a menu option.

    Example: From the Main Menu, select View Calibrations.

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    6 Pro-Link /MPC Allison Transmissions Users Manual

    Chapter 1 Using This Manual

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    Pro-Link/MPC Allison Transmissions Users Manual 7

    2

    Getting Started

    uNavigating Pro-LinkMenus and Screens, page 9

    uConnecting to a Transmission Application, page 10

    uAllison World Transmission, page 13

    uAllison CEC Transmission, page 14

    The Allison Transmission applications consist of two diagnostic tools that provide thecapability to reprogram and diagnose Allison transmissions using the Pro-Link

    /MPC.There are four applications:

    Allison WTEC

    Allison CEC

    Heavy Duty Systems (not covered in this manual)

    MPC Utilities (not covered in this manual)

    NOTE:

    i Since these applications are supported by both the Pro-Link GRAPHIQ and the Pro-Link Plus, this manual uses Pro-Link to refer to both products.

    This chapter provides instructions on connecting to the Allison Transmissions applications

    (i.e., Allison WTEC and Allison CEC) and navigating through their menu hierarchies (refer

    to Figure 2.1 Application Flow Chart, next).

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    8 Pro-Link /MPC Allison Transmissions Users Manual

    Chapter 2 Getting Started

    Figure 2.1 Application Flow Chart

    Allison WorldTransmission

    Allison CEC

    Printout

    Diagnostic

    ECU/EEPROMSetup

    DiagnosticData

    DiagnosticCodes

    Snapshot

    TriggerOnSpecific

    Trigger On Any Code

    DiagnosticData

    DiagnosticCodes

    Shift Inhibts

    I/O Wire States

    Clear ActiveIndicators

    ClearInactiveCodes

    Action Requests Enable ClutchTest

    Disable Clutch Test

    Active Fast Adaptive

    ResetUnadaptiveShifts

    ResetThrottleCalibration

    ResetAutodetect

    Trigger On Any Code

    TriggerOnSpecific

    TriggerManually

    ClearTrigger

    PrintSnapshot

    Trigger/Snapshot

    ECUCalibrationInformation

    View CMCs

    I/O Wire States

    I/O Assignment

    AutodetectInformation

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    - Navigating Pro-LinkMenus and Screens

    Pro-Link/MPC Allison Transmissions Users Manual 9

    Navigating Pro-LinkMenus and ScreensTo use the features provided with this application, you will need to select from

    various menus presented on the Pro-Link/MPC screen. Making selections typi-

    cally involves using the arrow keys ( and )to navigate to a desired

    option, then pressing the key.

    The following convention is used throughout this manual to provide abbreviated

    instructions on making on-screen selections.

    Example instruction sheet:

    1 From the WTEC main menu, select Diagnostics.

    What this means:

    1 From the WTEC main menu, use the and keys to select Diag-

    nostics, then press .

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    10 Pro-Link/MPC Allison Transmissions Users Manual

    Chapter 2 Getting Started

    Connecting to a Transmission Application

    Use the following procedure to connect to an Allison Transmission application.

    To connect to a transmission application:

    1 Connect the Pro-Link/MPC to the diagnostic connector on the vehicle, andturn the key to the on position.

    The following copyright screen appears and is displayed for approximately

    one second:

    The Pro-Link/MPC Start New Sessionscreen appears:

    NOTE:

    i if you select YES, you will start a new session. If you select NO, the Pro-Link/MPC displays data from a previous session.

    2 Select YES.

    Before using this application, be sure to read the Pro-LinkUsers Manual

    for the following:

    Important safety information

    Instructions on connecting the device to a vehicle

    Instructions on properly inserting an application card

    MPC BIOS

    2005 NNT, INC.

    PRO-LINK 9000/MPC

    START NEW SESSION?

    [YES] NO

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    - Connecting to a Transmission Application

    Pro-Link/MPC Allison Transmissions Users Manual 11

    The system selection screen appears.

    3 Select the correct transmission type (either Allison WTECor Allison CEC).

    4 Press .

    The Pro-Link/MPC attempts to establish communication with the vehicles

    on-board electronic control unit (ECU).

    NOTE:

    i If you select Allison WTEC, the cartridge automatically selects the properWorld Transmission type.

    If the Pro-Link/MPC is successful in establishing communication with the

    ECU, the following screen is displayed.

    If the Pro-Link/MPC is connected to a World Transmission, refer to

    Allison World Transmission (WTEC), next in this chapter.

    If the Pro-Link/MPC is connected to an Allison CEC transmission, refer to

    Allison CEC, later in this chapter.

    PRO-LINK MPC

    VERSION X.XX

    ----Selections----

    ALLISON WTEC

    LOADING

    ALLISON WTEC

    [FUNC] TO CANCEL

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    12 Pro-Link/MPC Allison Transmissions Users Manual

    Chapter 2 Getting Started

    If the Pro-Link/MPC is unsuccessful in establishing communication with the

    ECU, the following message is displayed:

    5 Press to continue.

    If the Pro-Link/MPC is still unable to establish communication with the

    ECU, the following message is displayed:

    NOTE:

    i Please refer to the Multi-Protocol Cartridge (MPC) Utilities Manual for trou-bleshooting recommendations.

    ALLISON WORLD

    TRANSMISSIONS

    LOOKING FOR WTEC

    [FUNC] TO CANCEL

    NO TRANSMISSION SEEN

    ON 1708 BUS

    [ENTER] TO CONTINUE

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    - Connecting to a Transmission Application

    Pro-Link/MPC Allison Transmissions Users Manual 13

    Allison World TransmissionAfter communication has been established, the WTEC main menu appears:.

    The following choices are available:

    Diagnostics (Refer to Chapter 3, later in this manual.)

    ECU/EEPROM Setup (Refer to Chapter 4, later in this manual.)

    Printout (Refer to Chapter 5, later in this manual.)

    WTEC II

    VERSION X.XX

    ----Selections----

    DIAGNOSTICS

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    14 Pro-Link/MPC Allison Transmissions Users Manual

    Chapter 2 Getting Started

    Allison CEC TransmissionYou access the Allison CEC Transmissionapplication from the main system se-

    lection screen.

    1 Use the and keys to make your selection, and press .

    The following menu choices are available:

    MTB600 CLBT,V,HT700

    CLBT5/6/9000 DP8000

    2 When you see the proper transmission type on the display, select it and press

    .

    A screen similar to the following is displayed:

    The following choices are available:

    Diagnostic Data (Refer to Diagnostic Data, page 66, of this

    manual.)

    Diagnostic Codes (Refer to Diagnostic Codes, page 67, of thismanual.)

    Snapshot (Refer to Snapshot, page 73, of this manual.)

    NNT PRO-LINK/MPC

    VERSION X.XX

    ----Selections----

    ALLISON CEC

    MTB600 CLBT,V,HT700

    ----Selections----

    DIAGNOSTIC DATA

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    Pro-Link/MPC Allison Transmissions Users Manual 15

    3

    Using the WTECDiagnostics Menu

    uDiagnostics Menu, page 16

    uDiagnostic Data, page 17

    uDiagnostic Codes, page 27

    uShift Inhibits, page 29

    uI/O Wire States, page 32

    uClear Active Indicators, page 34

    uClear Inactive Codes, page 35

    uAction Requests, page 36

    uTrigger/Snapshot, page 44

    This chapter provides detailed information on Allison World Transmission (WTEC)diagnostics. Options on the Diagnosticsmenu are covered, as are the options available

    through the submenus.

    NOTE:

    i For information on connecting to WTEC and using the main menu, refer to the previouschapter of this manual.

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    16 Pro-Link/MPC Allison Transmissions Users Manual

    Chapter 3 Using the WTEC Diagnostics Menu

    Diagnostics Menu1 Select DIAGNOSTICSfrom the WTEC main menu using the and

    keys.

    2 Press .

    The DIAGNOSTICSmenu displays:

    The following menu choices are available:

    Diagnostic Data

    Diagnostic Codes

    Shift Inhibits

    I/o Wire States

    Clear Active Indicators

    Clear Inactive Codes

    Action Requests

    Trigger/snapshot

    3 Use the and keys to scroll through the Diagnosticsmenu. Press

    to select menu choice.

    WTEC II

    VERSION X.XX

    ----Selections----

    DIAGNOSTICS

    DIAGNOSTICS

    ----Selections----

    DIAGNOSTIC DATA

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    - Diagnostics Menu

    Pro-Link/MPC Allison Transmissions Users Manual 17

    Diagnostic Data

    After selecting Diagnostic Datafrom the Diagnosticsmenu, a screen similar to

    the following screen appears:

    Use the and keys to scroll through the diagnostic data list.

    The following tables show the WTEC II and WTEC III diagnostic data covered by

    this application. The Diagnostic Data List Definitions describe the parameters

    used in the diagnostic application. The list is in the approximate order displayed

    by Pro-Link/MPC but will vary based on the transmission system being diag-

    nosed. Parameters not available will be indicated on the right hand side of the

    screen by a N/A symbol.

    NOTE:

    i Detailed diagnostic and repair procedures as well as specifications may befound in the system manufacturers shop manual.

    # ACTIVE CODES 5

    IGN STATUS ON

    SOL APPLY VOLTS 11.6V

    SUMP 50F

    TABLE 1. WTEC II Data List

    ParameterSampleValue Diagnostic Data List Definition

    #ACTIVE CODES 0 Indicates the number of currently active codes (up to

    five) in the diagnostic codes data list. Placing the

    cursor on this line and pressing provides ashortcut to the diagnostic codes data list to view all

    diagnostic codes, active or inactive. To return to the

    diagnostic data list, press the key.

    IGN STATUS ON Ignition StatusThe ECU interpretation of ignition

    voltage. When voltage is below a calibration value, the

    ignition is considered to be off.

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    18 Pro-Link/MPC Allison Transmissions Users Manual

    Chapter 3 Using the WTEC Diagnostics Menu

    IGN VOLTS

    (WTEC II only)

    11.1V Ignition VoltsThis voltage is used to determine if the

    vehicle ignition is turned on. The ECU shuts off when

    ignition is turned off and output speed is too low to

    measure.

    SOL APPLY VOLTS 11.1V Solenoid Apply VoltsThis voltage is measured inside

    the ECU, downstream of some power supply compo-

    nents. It is used for controlling the solenoid currents,

    and for detecting ECU supply voltage that is either too

    high or too low for normal operation.

    DIMMER VOLTS

    (WTEC II only)

    11.8V This voltage is used to control the display intensity.When it is zero, the ECU assumes that the headlights

    are off and sets the display to full intensity. When the

    dimmer voltage rises above a calibration level, the

    display is set to minimum intensity. As the dimmer

    voltage rises up to the same level as ignition voltage,

    the display intensity also rises.

    SUMP 161 F Sump temperature is measured by a thermistor located

    in t he transmission sump. The function of the ther-

    mistor is to detect cold oil temperature and limit

    transmission operation until sump oil has reached a

    minimum recommended temperature. It also serves to

    limit transmission operation when the oil has reached

    too high of a temperature. The ECU uses the sumptemperature information to assist in estimating clutch

    fill times (affects smoothness of shifting) and to

    estimate solenoid resistance (for current control). In

    addition, the sump temperature is used as a variable to

    permit oil level readings when the sump... and to limit

    those readings to a range of between 140F and 220F.

    OIL LVL AVAIL NO

    SENSOR

    Oil Level AvailableThis is a YES or NO response to

    Autodetect.

    OIL LVL +0QT Oil LevelThe volume of oil that needs to be added or

    removed from the transmission to get the correct oil

    level.

    OIL LVL CNTS 155 Oil Level CountsSlight fluctuations in the counts

    indicate proper function of the sensor as it responds to

    variations caused by oil flow within the transmission.

    TABLE 1. WTEC II Data List

    ParameterSampleValue Diagnostic Data List Definition

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    - Diagnostics Menu

    Pro-Link/MPC Allison Transmissions Users Manual 19

    SELECTED N This shows the actual gear selected by the operator.

    The transmission will automatically shift from its

    starting gear up to the gear range selected. Actual

    means that the gears are displayed in the ECUs

    internal naming scheme, L-6, N, and R.

    ATTAINED N1 This shows the actual gear that is commanded by the

    ECU at the moment. Actual means that the gears are

    displayed in the ECUs internal naming scheme, L-6

    with all the different neutral gears, and showing C or

    L for converter or lock-up operation. Actual range

    will always be the same for a given gear, while dis-

    played ranges, described next in this table, can be

    calibrated to display anything for a given gear.

    DISPLAYED N This is the gear selected by the operator as shown on

    the shift selector display. The ECU calibration deter-

    mines what number is displayed for any given gear.

    DISP ATTAINED N This is the actual gear that is commanded by the ECU

    at the moment.

    TPS PERCENT 0.0% This is the ECUs calculation of throttle opening, 0 to

    100 percent. It can be used to troubleshoot problems

    with the throttle linkage/TPS system, or SAE J-1939 or

    SAE J-1587 link to electronic engines.

    TPS CNTS 55 TPS CountsThis is the raw voltage signal as read

    from the TPS. The ECU calculates the throttle percent

    from this value, then voltage at closed throttle, and the

    voltage at WOT. This value can be used to troubleshoot

    problems with the throttle linkage/TPS system. It is not

    applicable to vehicles that use the SAE J-1587 or J-

    1939 link to electronic engines instead of a TPS. A

    steady, low number of counts or zero counts will always

    be displayed when the transmission is communicating

    with an electronic engine on the serial communication

    interface lines.

    INPUT SPEED 705 RPM The same as engine speed when the engine is directly

    connected to the transmission. This value may not be

    reasonable if there is a problem anywhere in the speed

    system (i.e., broken wire, runout on speed gear, or

    ECU calibration with wrong number of teeth).

    TABLE 1. WTEC II Data List

    ParameterSampleValue Diagnostic Data List Definition

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    20 Pro-Link/MPC Allison Transmissions Users Manual

    Chapter 3 Using the WTEC Diagnostics Menu

    TURBIN SPEED 685 RPM Turbine SPD RPMThe same as input speed when

    the converter lockup clutch is applied. It can be

    compared to output speed to check gear ratios. This

    value may not be reasonable if there is a problem

    anywhere in the speed system (i.e., broken wire,

    runout on speed gear, or ECU calibration with wrong

    number of teeth).

    OUTPUT SPEED 1 RPM Output SPD RPMOutput speed is used to determine

    shift points. The service tool can be used to verify that

    the transmission shifts when it is supposed to. It can

    also be compared to turbine speed to check gear

    ratios. This value may not be reasonable if there is a

    problem anywhere in the speed system (i.e., broken

    wire, runout on speed gear, or ECU calibration with

    wrong number of teeth).

    LOCKUP 0 RPM This is the ouput speed when the last shift into, or out

    of lockup occurred.

    RNG SHIFT 0 RPM Range ShiftThis is the output speed when the last

    range shift occurred. A shift from one gear range to

    another is a range shift.

    NEXT UP SHFT 0 RPM This is the output shift at which the next upshift will

    occur. Its value depends on throttle position and the

    range attained.

    NEXT DOWN SHFT 0 RPM This is the output speed at which the next downshift will

    occur. Its value depends on throttle position and the

    range attained.

    DO NOT SHIFT

    (WTEC II only)

    OFF Status of the Do Not Shift output from the ECU to the

    Do Not Shift light on the dashboard.

    REVERSE

    WARNING

    OFF A command from the ECU to the reverse warning relay

    to activate the audible warning device which indicates

    that the vehicle is in reverse gear.

    NEUTRAL START ON A command from the ECU to relay which allows the

    engine to be started in neutral only.

    RTDR REQ 0.0% Retarder Request%This is the ECUs calculation of

    the retarder request, 0 to 100 percent.

    TABLE 1. WTEC II Data List

    ParameterSampleValue Diagnostic Data List Definition

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    - Diagnostics Menu

    Pro-Link/MPC Allison Transmissions Users Manual 21

    RTDR REQ CNTS 85 Retarder Request CountsThis is the raw voltage as

    read from the retarder modulation sensor. The ECU

    calculates the retarder request percent from this value.

    This value can be used to troubleshoot problems with

    the retarder modulation sensor.

    RTDR TEMP 195 F Retarder TemperatureThis is the temperature of the

    oil in the retarder cavity.

    C3 PRESSURE SW OFF The C3 Pressure Switch closes when the C3 clutch is

    applied. (Example, Reverse, 3rd, or, 5th gears)

    A SOLENOID ON This is the commanded state (ON or OFF) of solenoids

    A through N.

    B SOLENOID ON This is the commanded state (ON or OFF) of solenoids

    A through N.

    C SOLENOID OFF This is the commanded state (ON or OFF) of solenoids

    A through N.

    D SOLENOID OFF This is the commanded state (ON or OFF) of solenoids

    A through N.

    E SOLENOID ON This is the commanded state (ON or OFF) of solenoids

    A through N.

    F SOLENOID OFF This is the commanded state (ON or OFF) of solenoids

    A through N.

    G SOLENOID OFF This is the commanded state (ON or OFF) of solenoids

    A through N.

    H SOLENOID OFF This is the commanded state (ON or OFF) of solenoids

    A through N.

    J SOLENOID N/A This is the commanded state (ON or OFF) of solenoids

    A through N.

    K SOLENOID OFF This is the commanded state (ON or OFF) of solenoids

    A through N.

    N SOLENOID N/A This is the commanded state (ON or OFF) of solenoids

    A through N.

    CLTCH TST ENABL OFF Clutch Test EnabledThe state (ON or OFF) of the

    Clutch Test Mode. See Enable Clutch Test, page 38,

    later in this chapter.

    TABLE 1. WTEC II Data List

    ParameterSampleValue Diagnostic Data List Definition

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    22 Pro-Link/MPC Allison Transmissions Users Manual

    Chapter 3 Using the WTEC Diagnostics Menu

    TABLE 2. WTEC III Data List

    ParameterSampleValue Diagnostic Data List Definition

    #ACTIVE CODES 5 Indicates the number of currently active codes (up to

    five) in the diagnostic codes data list. Placing the

    cursor on this line and pressing provides a

    shortcut to the diagnostic codes data list to view all

    diagnostic codes, active or inactive. To return to the

    diagnostic data list, press the key.

    IGN STATUS ON Ignition StatusThe ECU interpretation of ignition

    voltage. When voltage is below a calibration value, the

    ignition is considered to be off.

    SOL APPLY VOLTS 11.4V Solenoid Apply VoltsThis voltage is measured inside

    the ECU, downstream of some power supply compo-

    nents. It is used for controlling the solenoid currents,

    and for detecting ECU supply voltage that is either too

    high or too low for normal operation.

    SUMP 147 F Sump temperature is measured by a thermistor located

    in t he transmission sump. The function of the ther-

    mistor is to detect cold oil temperature and limit

    transmission operation until sump oil has reached a

    minimum recommended temperature. It also serves to

    limit transmission operation when the oil has reached

    too high of a temperature. The ECU uses the sump

    temperature information to assist in estimating clutch

    fill times (affects smoothness of shifting) and to

    estimate solenoid resistance (for current control). In

    addition, the sump temperature is used as a variable to

    permit oil level readings when the sump... and to limit

    those readings to a range of between 140F and 220F.

    OIL LVL AVAIL NO Oil Level AvailableThis is a YES or NO response to

    Autodetect.

    OIL NO

    SENSOR

    Oil LevelThe volume of oil that needs to be added or

    removed from the transmission to get the correct oil

    level.

    OIL LVL CNTS 178 Oil Level CountsSlight fluctuations in the counts

    indicate proper function of the sensor as it responds tovariations caused by oil flow within the transmission.

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    SELECTED N This shows the actual gear selected by the operator.

    The transmission will automatically shift from its

    starting gear up to the gear range selected. Actual

    means that the gears are displayed in the ECUs

    internal naming scheme, L-6, N, and R.

    ATTAINED N1 This shows the actual gear that is commanded by the

    ECU at the moment. Actual means that the gears are

    displayed in the ECUs internal naming scheme, L-6

    with all the different neutral gears, and showing C or

    L for converter or lock-up operation. Actual range

    will always be the same for a given gear, while dis-

    played ranges, described next in this table, can be

    calibrated to display anything for a given gear.

    DISPLAYED N This is the gear selected by the operator as shown on

    the shift selector display. The ECU calibration deter-

    mines what number is displayed for any given gear.

    PRI SEL OUT

    (WTEC III only)

    NEUTRAL Primary selector OutputRaw shift selector, data

    based on five secondary selector input wires. Invalid

    data displayed as FAULT.

    SEC SEL OUT

    (WTEC III only)

    FAULT Secondary Selector OutputRaw shift selector, data

    based on five secondary selector input wires. Invalid

    data displayed as FAULT.

    MODE ICON OFF Indicates the mode button has been activated and the

    input function assigned to the mode button has been

    regulated.

    THROT SRC UNKNOWN Throttle SourceThis is detected by Autodetect,

    Analog, J-1587, or J-1939. PWM can be manually

    selected from the reprogramming section of this

    manual.

    TPS PERCENT 0.0% This is the ECUs calculation of throttle opening, 0 to

    100 percent. It can be used to troubleshoot problems

    with the throttle linkage/TPS system, or SAE J-1939 or

    SAE J-1587 link to electronic engines.

    TABLE 2. WTEC III Data List

    ParameterSampleValue Diagnostic Data List Definition

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    TPS CNTS 27 TPS CountsThis is the raw voltage signal as read

    from the TPS. The ECU calculates the throttle percent

    from this value, then voltage at closed throttle, and the

    voltage at WOT. This value can be used to troubleshoot

    problems with the throttle linkage/TPS system. It is not

    applicable to vehicles that use the SAE J-1587 or J-

    1939 link to electronic engines instead of a TPS. A

    steady, low number of counts or zero counts will always

    be displayed when the transmission is communicating

    with an electronic engine on the serial communication

    interface lines.

    INPUT SPEED 700 RPM The same as engine speed when the engine is directly

    connected to the transmission. This value may not be

    reasonable if there is a problem anywhere in the speed

    system (i.e., broken wire, runout on speed gear, or

    ECU calibration with wrong number of teeth).

    TURBIN SPEED 692 RPM Turbine SPD RPMThe same as input speed when

    the converter lockup clutch is applied. It can be

    compared to output speed to check gear ratios. This

    value may not be reasonable if there is a problem

    anywhere in the speed system (i.e., broken wire,

    runout on speed gear, or ECU calibration with wrong

    number of teeth).

    OUTPUT SPEED 1 RPM Output SPD RPMOutput speed is used to determine

    shift points. The service tool can be used to verify that

    the transmission shifts when it is supposed to. It can

    also be compared to turbine speed to check gear

    ratios. This value may not be reasonable if there is a

    problem anywhere in the speed system (i.e., broken

    wire, runout on speed gear, or ECU calibration with

    wrong number of teeth).

    LOCKUP 0 RPM This is the ouput speed when the last shift into, or out

    of lockup occurred.

    RNG SHIFT 0 RPM Range ShiftThis is the output speed when the last

    range shift occurred. A shift from one gear range to

    another is a range shift.

    NEXT UP SHFT 0 RPM This is the output shift at which the next upshift will

    occur. Its value depends on throttle position and the

    range attained.

    TABLE 2. WTEC III Data List

    ParameterSampleValue Diagnostic Data List Definition

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    NEXT DN SHFT 0 RPM This is the output speed at which the next downshift will

    occur. Its value depends on throttle position and the

    range attained.

    C3 PRESSURE SW OFF The C3 Pressure Switch closes when the C3 clutch is

    applied. (Example, Reverse, 3rd, or, 5th gears)

    CHECK TRANS

    (WTEC III only)

    ON Check TransmissionStatus of CHECKTRANS output

    from ECU to CHECKTRANS light on the dashboard.

    REVERSE

    WARNING

    ON A command from the ECU to the reverse warning relay

    to activate the audible warning device which indicatesthat the vehicle is in reverse gear.

    NEUTRAL START ON A command from the ECU to relay which allows the

    engine to be started in neutral only.

    RETARD AVAIL NO Retarder AvailableThis is the response from Autode-

    tect (YES or NO).

    RTDR REQ 0.0% Retarder Request%This is the ECUs calculation of

    the retarder request, 0 to 100 percent.

    RTDR REQ CNTS 231 Retarder Request CountsThis is the raw voltage as

    read from the retarder modulation sensor. The ECU

    calculates the retarder request percent from this value.

    This value can be used to troubleshoot problems with

    the retarder modulation sensor.

    RTDR TEMP 185 F Retarder TemperatureThis is the temperature of the

    oil in the retarder cavity.

    ENG COOL CNTS 110 Engine Coolant CounterThis gives the direct voltage

    measurement in counts of Engine Coolant Tempera-

    ture Sensor.

    ENG COOL 85 F Engine CoolantTemperature detected or broadcast

    of the engine coolant. This is used to restrict retarder

    operation at higher temperatures.

    ENG COOL SRC ANALOG Engine Coolant SourceThis is the source of the

    Engine Coolant Temperature signal (Analog, J-1587, or

    J-1939).

    A SOLENOID ON This is the commanded state (ON or OFF) of solenoids

    A through N.

    B SOLENOID ON This is the commanded state (ON or OFF) of solenoids

    A through N.

    TABLE 2. WTEC III Data List

    ParameterSampleValue Diagnostic Data List Definition

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    Chapter 3 Using the WTEC Diagnostics Menu

    C SOLENOID OFF This is the commanded state (ON or OFF) of solenoids

    A through N.

    D SOLENOID OFF This is the commanded state (ON or OFF) of solenoids

    A through N.

    E SOLENOID ON This is the commanded state (ON or OFF) of solenoids

    A through N.

    F SOLENOID OFF This is the commanded state (ON or OFF) of solenoids

    A through N.

    G SOLENOID OFF This is the commanded state (ON or OFF) of solenoidsA through N.

    H SOLENOID OFF This is the commanded state (ON or OFF) of solenoids

    A through N.

    J SOLENOID N/A This is the commanded state (ON or OFF) of solenoids

    A through N.

    N SOLENOID N/A This is the commanded state (ON or OFF) of solenoids

    A through N.

    J1939 ABS ACTIVE NO This is the current ABS Active state (YES or NO) on the

    J1939 bus.

    J1939 KICK ACTIVE NO This is the current Kickdown Active state (YES or NO)

    on the J1939 bus.

    J1939 ENG BRK LV N/A This is the current Engine Brake Level (OFF, LO, MED,

    HI) on the J1939 bus.

    CLTCH TST ENABL OFF Clutch Test EnabledThe state (ON or OFF) of the

    Clutch Test Mode. See Enable Clutch Test, page 38,

    later in this chapter.

    PERCENT LOAD 0 - 100% This is the current Percent Load.

    TABLE 2. WTEC III Data List

    ParameterSampleValue Diagnostic Data List Definition

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    Diagnostic Codes1 Use the and keys to locate Diagnostic Codesfrom the Diag-

    nosticsmenu. Press .

    If no diagnostic codes are present, the following screen appears:

    2 Press to return to the Diagnosticsmenu.

    If diagnostic codes are present, a screen similar to the following appears:

    3 Use the and keys to scroll through the available active codes.

    The first line on this screen is the Header Line. The Header Line defines

    each of the five fields.

    The following table describes each symbol displayed on the Header Line.

    ---EMPTY---

    CODE d1 ACTV CTR IGN

    23 12 YES 60

    PRI SHIFT SELECTOR

    OR RSI LINK FAULT

    Code Description

    Code The code is a four-digit number. The first two digits

    represent main code (e.g., 23 in the above screen),

    while the second two digits represent sub code (e.g.,

    12 in the above screen).

    d The field d stands for Diagnostic Code List. Possible

    displays for d are the numbers 1 through 5. The d

    number relates to the single code you are viewing ofthe five possible.

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    Chapter 3 Using the WTEC Diagnostics Menu

    4 Use the and keys to scroll through the active codes.

    5 Press to return to the main menu.

    ACTV ACTV indicates if the code is Active Indicator of not.

    The display shows either YES or NO. Active Indicator

    indicates a code which is currently active or which

    conditions for clearing the code have not been met.

    Restrictions to operation may or may not occur and

    vary by code.

    CTR CTR is the Event Counter. The Event Counter tells

    you how many times this event or condition occurred.

    IGN IGN is the Ignition Cycle Counter, telling you how

    many times the ignition switch was cycled since this

    code was detected.

    Lines three and four are a plain English description of

    the code meaning. The two lines are different for each

    code.

    Code Description

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    Shift InhibitsShift inhibits are conditions present in the transmission that prevent shifting from

    taking place because of the state of the transmission. This information is used to

    determine what condition, if any, is inhibiting normal transmission operation. Shift

    Inhibitsdo not generate diagnostic codes as there is no malfunction occurring in

    the system.

    1 Using the and keys, scroll through the Diagnostics menu untilSHIFT INHIBITSappears.

    2 Press .

    The following screen appears:

    3 Use the and keys to scroll through the Shift Inhibitslist.

    Each inhibitor will have one of the following designations:

    Y = inhibitor active; shifting is notpermitted

    N = inhibitor inactive; transmission shifting is permitted

    DIAGNOSTICS

    ----Selections----

    SHIFT INHIBITS

    INPUT SPD N

    SPL FUNC RNG N

    MED COLD OIL N

    WHELL LOCK N

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    Chapter 3 Using the WTEC Diagnostics Menu

    The Pro-Link/MPC displays a Y for Yes and an N for No when the following

    inhibits are active or inactive respectively:

    Shift Inhibit Description

    INPUT SPEED If input (engine) speed is above a calibration

    value, and the splogic output speed is LO,

    then neutral to drive and neutral to reverse

    shifts are not allowed. The display updates

    instantly from N to Y but will only update from Y

    to N after a range selection.

    SPECIAL FUNCTION

    RANGE (SPL FUNC

    RNG)

    This inhibit is active when an I/O function input

    wire (using the direction change enable func-

    tion) disables the following shifts:

    Neutral to Drive

    Neutral to Reverse

    Drive to Reverse

    Reverse to Drive

    This display will only update when a range is

    selected.

    MEDIUM COLD OIL When the transmission oil is cold, this inhibit

    limits operation to reverse, neutral, and second

    and higher forward ranges. This display

    updates instantly.

    WHEEL LOCK When rapid deceleration of the output shaft is

    detected, this inhibit will prevent downshifts.

    This condition only lasts for a few seconds.

    SPLOGIC THROTTLE

    and SPLOGIC OUT SPD

    SPLOGIC THROTTLE and SPLOGIC OUT

    SPD inhibitors list the LO and HI state condi-

    tions. SPLOG=INHIB WARN is not followed by

    a state condition indicator. This parameter is a

    special pattern logic action code and can be

    different at various times.

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    SPECIAL PATTERN

    LOGIC

    Special Pattern Logic will do one of the follow-

    ing (depending on the status of splogic

    throttle (HI/LO) and splogic output speed (HI/

    LO), which updates instantly):

    Inhibit WarningDirection change shifts

    are inhibited and the select digit flashes

    with a continuous warning tone.

    CFNFRThis response pre-selects down

    to a calibration gear ratio, and then shifts to

    neutral. There is no warning tone and the

    select digit will not flash.

    Neutral WarningThe transmission will

    shift to neutral, and the select digit will flash

    with a continuous warning tone.

    Enable ShiftsThis allows normal trans-

    mission operation.

    SP LOGWill only update as ranges are

    selected by the operator.

    I/O WIRE STATES I/O Wire States shows the status of each avail-

    able input and output wire for the ECU in the

    configuration selected. It also indicates if the

    wire is in use and what function the input or

    output serves. Each wire is described asfollows:

    WIRE XXX IN X OFFThis is the pro-

    grammed input function, giving the wire

    circuit number, the input function number,

    and the ON or OFF state of that function on

    the first line. The second line in the data

    display is an English description of that

    function.

    WIRE XXX OUT # OFFThis is pro-

    grammed output function, giving the wire

    circuit number, the input function number,

    and the ON or OFF state of that function on

    the first line. The second line in the data

    display is an English description of that

    function.

    Shift Inhibit Description

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    Chapter 3 Using the WTEC Diagnostics Menu

    I/O Wire States1 Use the and keys to scroll through the DIAGNOSTICSmenu

    until I/O WIRE STATESappears.

    2 Press .

    A screen similar to the following appears:

    3 Use the and keys to scroll through the available wire states.

    The following tables describe sample WTEC and WTEC III/IV wire states;

    actual values change based on the calibration:

    WIRE 119 IN#19 OFF

    ENG BRAKE REQUEST

    TABLE 3. WTEC II I/O Sample Wire States

    Wire #Sample

    FunctionSample

    State Sample Defintion

    117 IN#00 OFF INPUT NOT USED

    118 IN#00 OFF PTO ENABLE

    119 IN#19 OFF ENG BRAKE REQUEST

    137 IN#40 OFF SERVICE BRK STATUS

    153 IN#18 OFF AUX FUNC INHB SPL1

    154 IN#20 OFF ANTI-LOCK BRAKE

    155 IN#38 OFF AUX FUNC INHB SPL2

    163 IN#00 OFF INPUT NOT USED

    MODE IN#01 OFF SECOND SHIFT SCHED

    105 OUT#00 OFF OUTPUT NOT USED

    112 OUT#00 OFF OUTPUT NOT USED

    114 OUT#22 OFF NEUT INDICATOR PTO

    125 OUT#00 OFF OUTPUT NOT USED

    132 OUT#02 OFF ENGINE BRAKE ENABLE

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    4 Press to return to the DIAGNOTICSmenu.

    TABLE 4. WTEC III I/O Wire States

    Wire #Sample

    FunctionSample

    State Sample Description

    117 IN#00 OFF INPUT NOT USED

    118 IN#00 OFF INPUT NOT USED

    119 IN#19 OFF ENG BRAKE REQUEST

    126 IN#00 OFF INPUT NOT USED

    137 IN#40 OFF SERVICE BRK STATUS

    153 IN#01 OFF SECOND SHIFT SCHED

    154 IN#00 OFF INPUT NOT USED

    155 IN#17 ON AUX FUNC INHB STD

    163 IN#54 OFF RETARDER ENABLE

    169 IN#45 OFF ENG BRAKE REQUEST #2

    177 IN#00 OFF INPUT NOT USED

    178 IN#00 OFF INPUT NOT USED

    MODE IN#15 OFF PTO ENABLE

    105 OUT#10 OFF SUMP/RTDE TEMP IND

    112 OUT#12 OFF PTO ENABLE 1

    114 OUT#04 ON RANGE INDICATOR

    125 OUT#09 OFF RETARDER INDICATOR

    132 OUT#02 OFF ENGINE BRAKE ENABLE

    166 OUT#00 OFF OUTPUT NOT USED

    167 OUT#05 OFF OUTPUT SPD INLK A

    176 OUT#00 OFF OUTPUT NOT USED

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    Chapter 3 Using the WTEC Diagnostics Menu

    Clear Active Indicators1 Use the and keys to scroll through the DIAGNOSTICSmenu

    until CLEAR ACT INDICATORSappears.

    2 Press .

    The following screen appears:

    3 Press .

    The following screen appears:

    The Pro-Link

    /MPC displays the DIAGNOSTICSmenu.

    If the vehicle is still in motion, the following screen appears:

    When all Active Indicators have been cleared, the following screen appears:

    4 Press to return to the DIAGNOSTICSmenu.

    DIAGNOSTICS

    ----Selections----

    CLEAR ACT INDICATORS

    CONTINUING WILL

    CLEAR ACTIVE

    INDICATORS

    [CONTINUE] CANCEL

    OUTPUT SPEED TOO HI

    [ENTER] TO CONTINUE

    ACTIVE INDICATORSHAVE BEEN CLEARED

    [ENTER] TO CONTINUE

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    Clear Inactive Codes1 Use the and keys to scroll through the DIAGNOSTICSmenu

    until CLEAR INACTIVE CODESappears.

    2 Press .

    The following screen appears:

    3 Press to continue.

    The following two screens appear:

    4 Press to return to the DIAGNOSTICSmenu.

    If you do not wish to erase the Inactive Codes, press the key to select

    CANCEL. Then press to return to the DIAGNOSTICS menu. The

    Inactive Codes will remain in the system memory.

    CONTINUING WILL

    CLEAR INACTIVE CODES

    [CONTINUE] CANCEL

    CLEARING INACTIVE

    CODES

    PLEASE WAIT

    [FUNC] TO CANCEL

    INACTIVE CODES

    HAVE BEEN CLEARED

    [ENTER] TO CONTINUE

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    Chapter 3 Using the WTEC Diagnostics Menu

    Action Requests1 Use the and keys to scroll through the DIAGNOSTICSmenu

    until ACTION REQUESTSappears.

    2 Press .

    The following menu options appear:

    Enable Clutch Test

    Disable Clutch Test

    Activate Fast Adaptive

    Reset Unadaptive Shifts

    Reset Throttle Calibration

    Reset Autodetect

    Certain conditions must be met for these actions to be performed. You may

    receive the following message while attempting to perform these actions:

    This message occurs if the vehicle is moving. Stop the vehicle in a safe

    place and set the parking brake so the vehicle will not move. Shift the trans-

    mission into Neutral. Press .

    OUTPUT SPEED TOO HI

    [ENTER] TO CONTINUE

    VEHICLE MUST BE

    STOPPED AND NEUTRAL

    SELECTED TO CONTINUE

    [ENTER] TO CONTINUE

    NOT IN NEUTRAL

    [ENTER] TO CONTINUE

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    This message occurs when you are stopped but the transmission is in any

    other position besides Neutral. Set the parking brake and shift the transmis-

    sion into Neutral. Press .

    The ECU transmitted a code the Pro-Link/MPC did not understand. Press

    . The Pro-Link/MPCwill repeat the requested action.

    ECU RESPONSED

    UNDEFINED

    [ENTER] TO CONTINUE

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    Chapter 3 Using the WTEC Diagnostics Menu

    Enable Clutch TestTo run the Enable Clutch test:

    1 From the Action Requestsmenu, select Enable Clutch Test, and press.

    The following screen appears.

    2 Press .

    The following screens appear:

    3 Use the and keys to scroll through the list of Diagnostic Data.

    4 Press to return to the Action Requestsmenu.

    5 Do one of the following:

    Continue to make selections from the Action Requestsmenu.

    or

    Press to return to the Diagnosticsmenu.

    CONTINUING WILL

    ENABLE CLUTCH TEST

    [CONTINUE] TO CANCEL

    ENABLING CLUTCH TEST

    PLEASE WAIT...

    [FUNC] TO CANCEL

    J1939 ABS ACTIVE NO

    J1939 KICK ACTIVE NO

    J1939 ENG BRK LV N/A

    CLTCH TST ENABL ON

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    Disable Clutch TestTo run the Disable Clutch test:

    1 From the Action Requestsmenu, select Disable Clutch Test.

    2 Press .

    The following screen appears:

    3 Press to return to the Action Requestsmenu.

    4 Do one of the following:

    Continue to make selections from the Action Requestsmenu.

    or

    Press to return to the Diagnosticsmenu.

    CONTINUING WILL

    DISABLE CLUTCH TEST

    [CONTINUE] CANCEL

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    Chapter 3 Using the WTEC Diagnostics Menu

    Activate Fast AdaptiveUse the Activate Fast Adaptiveoption if you want the shifts to have a faster con-

    vergence. A faster convergence leads to a smoother shifting condition.

    To use the Activate Fast Adaptive option:

    1 From the Action Requestsmenu, select Activate Fast Adaptive.

    2 Press .

    The following screen appears.

    3 Press .

    4 Press to return to the Action Requestsmenu.

    5 Do one of the following:

    Continue to make selections from the Action Requestsmenu.

    or

    Press to return to the Diagnosticsmenu.

    CONTINUING WILL

    ACTIVATE FAST

    ADAPTIVE

    [CONTINUE] TO CANCEL

    FAST ADAPTIVE HAS

    BEEN ACTIVATED

    [ENTER] TO CONTINUE

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    Reset Unadapted ShiftsTo use the Reset Unadapted Shifts option:

    1 From the Action Requestsmenu, select Reset Unadapted Shifts.

    2 Press .

    The following screen appears:

    3 Press enter.

    The following screen appears:

    4 Press enter to return to the Action Requestsmenu.

    5 Do one of the following:

    Continue to make selections from the Action Requestsmenu.

    or

    Press to return to the Diagnosticsmenu.

    CONTINUING WILL

    RESET UNADAPTED

    SHIFTS

    [CONTINUE] CANCEL

    SHIFTS HAVE BEEN

    RESET TO UNADAPTED

    CYCLE IGNITION POWER

    [ENTER] TO CONTINUE

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    Chapter 3 Using the WTEC Diagnostics Menu

    Reset Throttle CalibrationTo use the Reset Throttle Calibration option:

    1 From the Action Requestsmenu, select Reset Throttle Calibration.

    The following screen appears:

    2 Press .

    The following screen appears:

    3 Press to return to the Action Requestsmenu.

    4 Do one of the following:

    Continue to make selections from the Action Requestsmenu.

    or

    Press to return to the Diagnosticsmenu.

    CONTINUING WILL

    RESET THROTTLE

    CALIBRATION

    [CONTINUE] CANCEL

    THROTTLE CALIBRATION

    HAS BEEN RESET

    [ENTER] TO CONTINUE

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    Reset AutodetectUse this option to reset all Customer Modifiable Constants (CMCs) that have been

    set to Autodetect. CMCs that can be reset include, but are not limited to the

    following:

    Retarder

    Oil Level

    TPS Source

    Engine Coolant Source

    To use the Reset Autodetect option:

    1 From the Action Requestsmenu, select Reset Autodetect.

    2 Press .

    The following screen appears:

    3 Press .

    The following screen appears:

    4 Press to return to the Action Requestsmenu.

    5 Do one of the following:

    Continue to make selections from the Action Requestsmenu.

    or

    Press to return to the Diagnosticsmenu.

    CONTINUING WILL

    RESET AUTODETECT

    PARAMETERS

    [CONTINUE] CANCEL

    AUTODETECT WILL

    RESTART AT NEXT

    ENGINE START

    [ENTER] TO CONTINUE

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    Chapter 3 Using the WTEC Diagnostics Menu

    Trigger/SnapshotTrigger/Snapshotenables the Pro-Link/MPC to record data from the vehicle

    while it is being driven. Data can then be played back when you return to the shop.

    You can use this feature to identify intermittent problems that would be difficult to

    locate by any other method. Depending on the data update rate selected, the Pro-

    Link/MPC can record up to 30 minutes of data.

    When using the Trigger/Snapshotoption, the Pro-Link/MPC continuously

    records data. When the memory is full, the oldest data is dropped and new data

    is added. You choose what will trigger data recording. The trigger is a mark in

    the recording so you can find that exact spot later during playback. You choose

    what to use as a trigger. Because driveability problems are often related to active

    codes, you can have the Pro-Link/MPC trigger when an active code is set. You

    can choose a specific code, or have the trigger set if any code is stored while

    Trigger/Snapshotis enabled.

    You decide how much data will be stored before or after a trigger has been set. It

    is sometimes useful to record data that was stored before a trigger was set,

    looking for a trend that led up to setting the trigger. It can also be helpful to look at

    data that was recorded after a trigger was set. You decide ahead of time how

    much data will be recorded before and after the trigger point.

    You can also review Snapshot data captured once the trigger has activated by se-

    lecting a data list. For more information on how to review Snapshot data, refer to

    Reviewing Snapshot Data later in this chapter.

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    You access Trigger/Snapshot functions from the MPC Utilitiesmenu or the

    WTEC Diagnosticsmenu.

    The Pro-Link/MPC uses a fault code (specific or any) as the trigger. You specify

    the trigger point by choosing from the following:

    Trigger on Any Code

    Trigger on Specific

    Trigger Manually

    Clear Trigger

    Print Snapshot

    To use the Trigger/Snapshot option and set the trigger point:

    1 From the Diagnosticsmenu, select Trigger/Snapshot .

    2 Press .

    The following screen appears:

    3 Use the and keys to make your selection.

    TRIGGER/SNAPSHOT

    ----Selections----

    TRIGGER ON ANY CODE

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    Chapter 3 Using the WTEC Diagnostics Menu

    Trigger on Any CodeIf you select Trigger on Any Codeas your trigger point, the Pro-Link/MPC

    triggers on any fault code when an active fault occurs.

    To use the Trigger on Any Code option:

    1 From the Trigger/Snapshot menu, select Trigger on Any Code.

    2 Press .

    The following screen appears:.

    3 Press to continue.

    When an active fault occurs, the following screen appears:

    4 Press to return to the previous screen.

    TRIGGER/SNAPSHOT

    ----Selections----

    TRIGGER ON ANY CODE

    TRIGGER IS SET TO

    ANY CODE

    [ENTER] TO CONTINUE

    TRIGGER OCCURRED AT

    XX-XX-XX

    [ENTER] TO CONTINUE

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    Pro-Link/MPC Allison Transmissions Users Manual 47

    Trigger on SpecificIf you select Trigger on Specific as your trigger point, the Pro-Link/MPC triggers

    only on the specific code you designate.

    To use the Trigger on Specific option:

    1 From the Trigger/Snapshot menu, select Trigger on Specific.

    2 Press .

    The following screen appears:

    3 Use the and keys to scroll through the specific WTEC codes until

    the appropriate code is displayed.

    4 Press .

    The following confirmation screen appears:

    The trigger is activated when the selected code has an active fault.

    TRIGGER/SNAPSHOT

    ----Selections----

    TRIGGER ON SPECIFIC

    SELECT TRIGGER CODE

    12 12

    TRIGGER SET TO 21 12

    21 THROTTLE SENSORFAILED LOW

    [CONTINUE] CANCEL

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    Chapter 3 Using the WTEC Diagnostics Menu

    Trigger Manually

    If you select Trigger Manually, you determine the trigger point by pressing any

    numeric key on the Pro-Link/MPC. Keep the Press Any Numeric Key to Fire

    Trigger screen active while driving the vehicle, then set the trigger point at your

    discretion.

    To use the Trigger Manually option:

    1 From the Trigger/Snapshot menu, select Trigger Manually.

    2 Press .

    The following screen appears:

    3 While driving the vehicle, press any numeric key to manually set the trigger

    point.

    The following screen appears:

    Line two is the length of time the Pro-Link/MPC has been on before the

    trigger point was set.

    TRIGGER/SNAPSHOT

    ----Selections----

    TRIGGER MANUALLY

    PRESS ANY NUMERIC

    KEY TO

    FIRE TRIGGER[FUNC] TO CANCEL

    TRIGGER OCCURRED AT

    XX-XX-XX

    [ENTER] TO CONTINUE

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    Pro-Link/MPC Allison Transmissions Users Manual 49

    Clear Trigger

    Use the Clear Triggeroption to erase the data that is being stored at the time the

    trigger is activated. The only information retained will be the current information

    from the vehicle.

    To use Clear Trigger option:

    1 From the Trigger/Snapshot menu, select Clear Trigger.

    2 Press .

    A Trigger Cleared message appears.

    3 Press to return to the Trigger/Snapshot menu.

    Print Snapshot

    Use Print Snapshotto print the data that was stored in the Custom Data List

    when Snapshot was activated. Each piece of Snapshot data is stored in a frame.

    You select the number of frames you want to print. You access the Print

    Snapshotoption from the Trigger/Snapshotmenu.

    Note: You must set up a custom data list prior to printing Snapshot data. If you

    have not set up a custom data list, you may encounter the following

    message:

    TRIGGER/SNAPSHOT

    ----Selections----

    CLEAR TRIGGER

    SNAPSHOT PRINTOUT

    ONLY AVAILABLE FOR

    CUSTOM DATA LIST

    [ENTER] TO CONTINUE

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    Chapter 3 Using the WTEC Diagnostics Menu

    Refer to the Custom Data List section of the Multi-Protocol Utilities Manual

    for details on setting up a custom data list. You may create a custom data

    list to print Snapshot data before or after Snapshot data is captured. The

    custom data list may also be altered and Snapshot data printed again.

    Snapshot data will only be deleted when the Pro-Link/MPC is turned off

    or when a new Snapshot request is activated.

    To use the Print Shapshot option:

    1 From the Trigger/Snapshot menu, select Print Snapshot.

    2 Press .

    The following screen appears:

    Selecting the number of frames you want to print allows for the adjustment

    of the data window to print.

    3 Using the numeric keypad, enter the number of frames desired.

    4 Press .

    The following screen appears:

    TRIGGER/SNAPSHOT

    ----Selections----

    PRINT SNAPSHOT

    ENTER TOTAL SNAPSHOT

    FRAMES TO PRINT

    100

    ENTER MSECS PER

    FRAME

    500

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    Pro-Link/MPC Allison Transmissions Users Manual 51

    The time duration of each frame is in milliseconds (1000 milliseconds equals

    1 second, 500 milliseconds equals second, etc.). Adjusting the number of

    frames and the time or each frame gives the technician the capability to alter

    the amount of data printed.

    5 Using the numeric keypad, enter the number of milliseconds for each frame.

    6 Press .

    Snapshot prints five items at a time. If you have more than five items in a

    Custom Data List, Snapshot prints five items and the starts over with the

    next five items until all Custom Data List selections are printed. You will

    receive a printed message.

    7 To cancel printing, Press .

    Reviewing Snapshot Data

    Once the trigger has been activated, you can review the data captured by select-

    ing a data list. This list is either a standard data list such as Diagnostics Codes

    from the Diagnosticsmenu, or it could be a custom data list.

    To review Snapshot data:

    1 Select the data list you wish to review.

    2 On the numeric keypad, press 7.

    The MPC Infoscreen appears.

    The time should reflect the time the trigger was activated. This indicates that

    the Pro-Link/MPC is in Snapshot Review Mode. The flashing cursor should

    be two vertical lines rather than the solid cursor normally seen.

    3 Press 7 again to put the Pro-Link/MPC into Real-time Mode (all data

    reviewed will be real time).

    NOTE:

    iFor detailed explanation of cursors, please refer to the keyboard section of

    the Multi-Protocol Cartridge (MPC) Utilities Manual.

    4 To view captured data, press the key.

    You are returned to the data list you for review.

    5 Use the and keys to select the parameter you want to view.

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    Chapter 3 Using the WTEC Diagnostics Menu

    6 Place the blinking cursor on the desired parameter.

    7 To view changes to the information for that specific parameter during the data

    capture time frame, hold in the red, side button located on the left side of the

    Pro-Link/MPC and simultaneously press the or right key.

    If you receive an empty message, you have exceeded the time frame of

    data captured and must restart the Pro-Link/MPC.

    8 If you wish to continue to review Snapshot data, restart the Pro-Link/MPC.

    9 When prompted to start a new session, select NO.

    The data captured during the Snapshot session will be restored for viewing.

    IMPORTANT:

    If the trigger is activated more than once during a session, only the lasttrigger event will be used as a time mark. Earlier triggers will not be

    retained as a reference point.

    10 Press to return to the Allison WTECmain menu.

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    Pro-Link/MPC Allison Transmissions Users Manual 53

    4

    Using the WTECECU/EEPROMSetup Menu

    uThe Setup Menu, page 54

    uView Customer Modifiable Constants, page 57

    uI/O Wires States, page 59

    uI/O Assignments, page 59

    uAutodetect INFO, page 60

    This chapter provides detailed information on using the ECU/EEPROM Setup Menu.

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    Chapter 4 Using the WTEC ECU/EEPROM Setup Menu

    The Setup MenuThe ECU/EEPROM Setupmenu provides information on the transmission ECU.

    The functions of this section of the application will vary based on the version of the

    software you have. Not all functionality may be available in your system.

    From the WTEC main menu, use the and keys to select ECU/

    EEPROM Setup.

    Press .

    The ECU/EEPROM Setupmenu appears:

    The following menu selections are available (depending on which version of the

    software you have):

    ECU Calibration

    View CMCs

    I/O Wire States

    I/O Assignments

    Autodetect Info

    WTEC II

    VERSION XX.XX

    ----Selections----

    ECU/EEPROM SETUP

    ECU/EEPROM SETUP

    ----Selections----

    ECU Calibration

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    Pro-Link/MPC Allison Transmissions Users Manual 55

    ECU Calibration

    To use the ECU Calibration option:

    1 From the ECU/EEPROM Setupmenu, use the and keys to select

    ECU Calibration.

    2 Press .

    A scrollable data list similar to the following appears:

    3 Use the and keys to scroll through the parameter list.

    ECU/EEPROM SETUP

    ----Selections----

    ECU Calibration

    CIN 08002RQ006N

    SW Level P02

    ECU S/N M-03166498

    ECU P/N 29524775

    ECU M/D 03-11-1996

    HCN 6CCN D70

    TRANS CONFIG

    CONFIG AVAIL

    CONFIG USED

    TOOL S/N 11420

    LAST S/N 11420

    I/O PACKAGE #00114

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    Chapter 4 Using the WTEC ECU/EEPROM Setup Menu

    The following parameters may be viewed:

    4 Press to return to the ECU/EEPROM Setupmenu.

    Parameter Description

    CIN Calibration Identification number (11 characters)

    SW LEVEL Identifies the software level of the transmission ECU

    ECU S/N Identifies ECU serial number (eight characters; an M, B,

    or a 3 prior to the number indicates the ECU as a MAX

    feature, a Basic, or a WTEC III unit)

    ECU P/N Identifies ECU part number without a cover or shifter (up

    to ten characters; ECUs manufactured prior to 09/92

    may not display a part number)

    ECU M/D ECU manufacture date

    HCN Hardware compatibility number

    CCN Calibration compatibility number

    TRANS

    CONFIG

    Level of transmission detected TRANS ID

    CONFIG AVAIL Level of TRANS ID in ECU Calibration

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    - The Setup Menu

    Pro-Link/MPC Allison Transmissions Users Manual 57

    View Customer Modifiable ConstantsYou use the View CMCsoption to view Customer Modifiable Constants (CMCs)

    for the selected I/O Package.

    The calibration of the transmissions electronic control unit (ECU) is programmed

    with one of six possible I/O function packages. The I/O Packages are based on

    vehicle use, and contain the appropriate I/O functions and the appropriate settings

    for the Customer Modifiable Constants (CMCs) for the stated use of the vehicle.

    CMCs vary by I/O Package.

    The Pro-Link/MPC will only display those I/O functions and CMCs that are

    enabled by the current ECU programming. Not all of the CMCs in the following list

    are available in your specific package.

    Customer Modifiable Constant

    D1 Select Position (Primary) Eng Brake Preselect Shift

    Position

    D1 Select Position (Secondary) Maximum Output Speed Auto-

    matic Neutral

    Maximum Engine Speed for

    PTO Engagement

    Maximum Output Speed Low

    Axle Select

    Maximum Engine Speed for

    PTO Operation

    Range Indicator Low Gear

    Maximum Output Speed for

    PTO Engagement

    Range Indicator First Gear

    Maximum Output Speed for

    PTO Operation

    Range Indicator Second Gear

    Range Indicator Third Gear Override Engine Coolant Source

    Autodetect

    Range Indicator Fourth Gear Override Oil Level Sensor Auto

    Detect

    Range Indicator Fifth Gear Override Retarder Autodetect

    Range Indicator Sixth Gear Eng Coolant Temp To StartRetarder Capacity Reduction

    Range Indicator Neutral Gear Eng Coolant Temp To Start Pre-

    select Shifts

    Range Indicator Reverse Gear Eng Brake Preselect Shift Sched

    Select

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    Chapter 4 Using the WTEC ECU/EEPROM Setup Menu

    To view CMCs:

    1 From the ECU/EEPROM Setupmenu, use the and keys to select

    View CMCs.

    2 Press .

    Speed to Turn On Output Speed

    Interlock

    Flash If Hot Oil - Retarder

    Capacity Reduction

    Speed to Turn Off Output Speed

    Interlock

    Flash If Hot Oil - Preselected

    Shifts

    Eng Speed to Turn On PTO

    Overspeed Ind

    Flash if Hot Coolant - Retarder

    Capacity Reduction

    Eng SPD to Turn Off PTO Over-

    speed Ind

    Flash if Hot Coolant - Reselected

    Shifts

    Eng Speed to Turn On Eng

    Overspeed Ind

    Retarder Capacity Reduction-

    Hot Coolant

    Eng Speed to Turn Off Eng

    Overspeed Ind

    Override Throttle Source Auto

    Detect

    ECU/EEPROM SETUP

    ----Selections----

    VIEW CMCs

    Customer Modifiable Constant

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    Pro-Link/MPC Allison Transmissions Users Manual 59

    The following is a representative screen, displaying the first CMC for the

    current I/O Package:

    3 Use the and keys to scroll through the list of available CMCs.

    4 When you are finished viewing CMCs, press to return to the ECU/EEPROM Setupmenu.

    I/O Wires States

    The I/O Wire Statesfunction provides you with the capability to view the I/O wires

    that are enabled.

    1 From the ECU/EEPROM Setupmenu, select I/O Wire Statesand press.

    The first I/O Wire is displayed. The ON/OFF indicator on the right-hand sideof the Pro-Link/MPC display indicates the status of the wire.

    2 Use the and keys to scroll through the wire status display.

    3 To return to the ECU/EEPROM Setupmenu, press .

    I/O Assignments

    TheI/O Assignments function displays the enabled/disabled status of the input

    and output wire assignment.

    1 From the ECU/EEPROM Setupmenu, select I/O Assignmentsand press.

    2 Use the and keys to scroll through the wire I/O assignments list.

    3 To return to the ECU/EEPROM Setupmenu, press .

    RANGE INDICATOR

    SECOND GEAR

    NO

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    Chapter 4 Using the WTEC ECU/EEPROM Setup Menu

    Autodetect INFOThe Autodetect INFOfunction displays parameters that are configured for auto-

    matic detection.

    1 From the ECU/EEPROM Setupmenu, select Autodetect INFOand press.

    2 Use the and keys to scroll through the parameter list.

    3 A screen similar to the following is displayed:

    The following table shows the Allison response to the Throttle Source Avail-

    able Signal and the corresponding Autodetect response to the type of

    throttle source detected:

    The following table shows the Allison response to the Engine Coolant Avail-

    able Signal, and the corresponding Autodetect response to the type of

    engine coolant source detected:

    OIL LEVEL AVAIL NO

    RETARD AVAIL NOENG COOL SRC ANALOG

    ANALOG COOL AVAIL YES

    Allison Response Autodetect Response

    Analog (ANALG THR AVAIL) Analog (YES or NO)

    J-1587 (J1587 THR AVAIL) J-1587 (YES or NO)

    J-1939 (J1939 THR AVAIL) J-1939 (YES or NO)

    Allison Response Autodetect Response

    Analog (ANALG COOL AVAIL) Analog (YES or NO)

    J-1587 (J1587 COOL AVAIL) J-1587 (YES or NO)

    J-1939 (J1939 COOL AVAIL) J-1939 (YES or NO)

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    Pro-Link/MPC Allison Transmissions Users Manual 61

    5

    Using the WTECPrintout Option

    uUsing the Printout Option, page 62

    This chapter provides a quick overview of the Printout option available with AllisonWorld Transmissions (WTEC). You access the Printout option from the WTEC main menu.

    For information on the WTEC main menu, refer to Chapter 2 of this manual.

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    Chapter 5 Using the WTEC Printout Option

    Using the Printout OptionThe Printoutoption provides you with the capability to obtain printed information

    on several from several areas within the diagnostic program.

    To use the Printout option:

    1 From the WTEC main menu select Printout.

    2 Press .

    The following items (varies by diagnostic application) may be available to

    print:

    3 Use the and keys to scroll through the menu and select the items

    you wish to print

    4 Press .

    WTEC II

    Version X.XX

    ----Selections----

    PRINTOUT

    ECU Calibration Info Diagnostic Codes

    I/O Wire States AutoDetect Info

    Modifiable Constants I/O Assignments Shift Inhibits Custom Data List

    Diagnostic Data MPC Info

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    Pro-Link/MPC Allison Transmissions Users Manual 63

    The following screen appears.

    5 Do one of the following:

    Wait for Pro-Link

    /MPC to fulfill your print request.or

    Press to cancel your print request.

    When the Pro-Link/MPC is finished printing the item you selected for print-

    ing, you will be returned to the Printout menu.

    6 Press to return to the WTEC main menu.

    NOTE:

    i For detailed instructions on setting up your printer and troubleshootingprocedures (if you are unable to obtain the printout you requested), refer tothe Multi-Protocol Cartridge (MPC) Utilities Manual.

    PRINTING

    [FUNC] TO CANCEL

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    Chapter 5 Using the WTEC Printout Option

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    Pro-Link/MPC Allison Transmissions Users Manual 65

    6

    Using the AllisonCEC Application

    uDiagnostic Data, page 66

    uDiagnostic Codes, page 67

    uSnapshot, page 73

    This chapter provides information on the Allison CEC Transmission application,including a table listing and describing diagnostic codes.

    NOTE:

    i For information on connecting to Allison CEC Transmission and using the main menu,refer to Chapter 2 of this manual.

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    Chapter 6 Using the Allison CEC Application

    Diagnostic DataTo use the Diagnostic Data option:

    1 Select DIAGNOSTIC Datafrom the menu using the and keys,

    and press .

    The diagnostic data list is displayed.

    2 Use the and keys to scroll through the entire diagnostic data list.

    Pressing the left arrow key causes the display to advance four lines.

    Pressing the right arrow key causes the display to move backward four

    lines. When you reach the end of the diagnostic data list, scrolling stops.

    3 Press to return to the Allison CEC main menu.

    NOTE:

    i The electronic control unit (ECU) and the calibration PROM together areidentified by an eight-digit assembly number. Consult the appropriate Alli-son Transmission service literature to determine the specific part number

    for your ECU and the specific part number for the PROM.

    #ACTIVE CODES 5

    IGN STATUS ON

    SOL APPLY VOLT 13.5V

    SUMP 109F

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    - Diagnostic Codes

    Pro-Link/MPC Allison Transmissions Users Manual 67

    Diagnostic CodesWhen you press the key on the Diagnostic Codesselection, the Pro-

    Link/MPC displays the code number, along with a description of the code or

    codes stored in the ECU.

    The readout contains the name of the system or component that caused the code

    to be set.

    When viewing Diagnostic Codesin the normal Data List, the number on the left

    is usually a more severe code than the code on the right side of the display. If both

    memory locations have a code stored while in this function selection, the code on

    the left will be displayed first. Also, if there are two codes stored in the ECU, the

    arrows will appear on the bottom line of the code display screen.

    NOTE:

    i When certain operating conditions occur, a diagnostic code will be set inone of two memory locations of the ECU. Both memory locations are dis-played, and the code in the left position is usually more severe to

    transmission operation. Consult the appropriate Allison Transmission trou-

    bleshooting manual to determine system response for the various codes.

    The following table provides a list of Allison CEC diagnostic codes and a descrip-

    tion for each code:

    ALLISON DIAG CODES

    SPEED SENSOR

    CODE 22

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    Chapter 6 Using the Allison CEC Application

    TABLE 1. Allison CEC Diagnostic Codes

    Diagnostic Code Description

    TPS Counts and % The throttle position sensor (TPS) monitors the

    position of the fuel control lever on the engine. The

    resulting voltage signal is converted to digital counts

    by the ECU. It is possible for the readout to range from

    244 counts at idle to nearly 0 counts at open throttle.

    Idle counts greater than or equal to 233 or Wide Open

    Throttle counts less than or equal to 14 counts will set

    Fail Codes.

    The throttle position count is converted by the ECU topercentage of throttle applied. It is possible for the

    readout to range from 0 percent (closed) to 100

    percent (fully open).

    Range SEL When the vehicle driver operates the shift selector in

    the vehicle cab, the readout indicates the range

    selected. Note that this is the range selected, not nec-

    essarily the range the transmission actually attains.

    The readouts include:

    R - Reverse

    F4 - 1st through 4th (Drive)

    F3 - 1st through 3rd (Drive)

    F2 - 1st through 2nd

    F1 - 1st

    R2 - Second reverse

    N - Neutral

    F6 - 1st through 6th (Drive)

    F5 - 1st through 5th (Drive)

    Also refer to Range ATT.

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    Pro-Link/MPC Allison Transmissions Users Manual 69

    Range ATT In response to the drivers request for a particular

    range, the ECU issues commands for the transmis-

    sion to shift. Due to operating conditions, the range

    actually attained may or may not match the range

    selected. The readouts include:

    R2 - Second Reverse

    R - Reverse

    N - Neutral

    1C - 1st converter

    1L - 1st lockup

    2C - 2nd converter

    2L - 2nd lockup

    3C - 3rd converter

    3L - 3rd lockup

    4C - 4th converter

    5C - 5th converter

    5L - 5th lockup

    6C - 6th converter

    6L - 6th lockupNote: In the diagnostic mode, the ECU data stream

    update rate is approximately 1.25 seconds. If the

    transmission is shifting rapidly, it is possible that the

    transmission may pass through several attained

    ranges more quickly than the readout can display

    them. This is not a fault of either the ECU or the Pro-

    Link9000. If a faster update of range attained infor-

    mation is required, go to the Range Selected/Range

    Attained section of this manual.

    Range Shift RPM The readout displays the transmission output shaft

    speed (rpm) when the transmission made its last

    range upshift or downshift. Converter lockups areexcluded. Due to the slow update rate of the ECU, be

    careful to match the displayed value with the proper

    shift. If you are not certain, use the transmission

    HOLD feature to inhibit unwanted shifts.

    TABLE 1. Allison CEC Diagnostic Codes

    Diagnostic Code Description

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    Chapter 6 Using the Allison CEC Application

    Lockup RPM The readout indicates the transmission output shaft

    speed (rpm) when the last converter lock-up (engage

    or disengage) occurred. When the converter is locked

    up (i.e., engaged) it provides a direct mechanical link

    from the engine through the converter. When the con-

    verter is not locked (i.e., disengaged) the converter

    pump and turbine are connected by hydraulic fluid

    only. Lockup rpm is generally different at closed and

    open throttle positions.

    Output RPM A speed sensor is located on the rear cover of the

    transmission to detect output shaft rpm. The readout

    shows actual transmission output shaft speed in revo-

    lutions per minute; the readout lower limit is 60 rpm.

    Oil Temp A temperature sensor is located in the transmission

    sump on MT(B) 600; V, HT(B); and C(L) (B)T 700

    transmissions. It is located in the lock-up valve body

    assembly on C(L) (B)T 5/6/9000 and DP8000 trans-

    missions. High oil temperature may result from over

    filling or cooling system problems. Low oil temperature

    may result from cold weather conditions.

    The readout provides both Fahrenheit (-60F to

    350F) and Celsius (-51C to 177C).

    FWD Press SW (MTB600 CLBT,V,HT700 only)

    A pressure switch in the transmission detects if the

    transmission has attained a forward range. The

    readout is ON when there is forward pressure, and it is

    OFF when there is no forward pressure. Because the

    ECU need


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