Content

Foreword

Safety information

• Important safety notice
• Warnings, cautions and notes
• Trademarks used in this manual
• Gear shift terms and gear shift display

General description

• Gearbox
• Transmission control module (TCM)
• Gear selector
• A. Push button shift
• B. Lever type gear selector
• Throttle position sensor
• Speed sensors
• Control module
• Posting
• A. Field wiring
• B. Internal wiring
• Vehicle interface module
• Auto detect function
• A. Retarder
• B. Oil level sensor (OLS)
• C. Throttle position signal source
• D. Engine coolant temperature TRANSID (TID)

Definitions and abbreviations

• Check trans indicator light (check transmission)
• Allison Transmission diagnostic tool
• Abbreviations

General information

• General training required
• Using the troubleshooting guide
• System overview
• Important information for troubleshooting
• Start the troubleshooting process
• TCM Diagnostic procedure
• Reset TCM parameters to support engine information update
• Reset TCM autoselect

Checking the wiring

• Check for open circuits, short circuits between wires and short circuits to ground
• Checking the transmission through connector for open circuits, wire-to-wire shorts, and short to ground

Oil level sensor

• Introduction
• Oil level display (gear selector)
• A. Oil level reading procedure
• Electronic oil level check (Allison DOCTM for PC – service tool)
• A. Oil level reading procedure

Diagnostic trouble codes

• Memory of diagnostic trouble codes
• Read and reset DTC
• System response after registration of diagnostic trouble codes
• Gear shift display indications associated with active DTCs
• Index and description of diagnostic trouble codes
• Troubleshooting diagnostic trouble codes
• A. Starting the troubleshooting process
• B. Arrangement of solenoids
• C. Diagram of diagnostic trouble codes

Input and output functions

• Input functions
• Output function

Troubleshooting process for performance complaints

Applications

• A. Identifying potential wiring problems
• B. Checking the clutch and retarder pressure
• C. Solenoid and clutch table
• D. Wire / connector table
• E. Connector numbers, terminal numbers tool numbers and repair instructions
• F. Throttle position sensor adjustment
• G. Carrying out welding work on the vehicle / interface module for connecting diagnostic equipment
• H. Hydraulic diagram
• J. 3000 and 4000 series equipment wiring diagram
• K. Solenoid resistance table
• L. Electromagnetic interference from external sources
• M. Diagnostic chart - 3000 and 4000 series gearbox hydraulics
• N. ALLISON DOCTM for PC – service tool
• P. Input and output functions
• Q. Thermistor troubleshooting information
• R. SAE J1939 data channel