Allison MD/HD/B WTEC II Fault Code Manual

Allison MD/HD/B WTEC II Fault Code Manual

Allison MD/HD/B WTEC II Electronic Troubleshooting Manual

Factory printed manual.  OEM factory troubleshooting manual used for performing diagnostic testing & repairing WTEC II controls (pre-TranID TID1).  Especially useful for electronic diagnostics & fault codes.  Using this manual in conjunction with the Allison DOC software will assist in reducing diagnostic & repair time.

Model Coverage:

• MD 3060 / MD 3066 / MD 3560 (P) (R)
• MD 3070 PT
• HD 4060 / HD 4560 (P) (R)
• B 300 / B 400 / B 500 (P) (R)

Contents include:

1. General description

• Transmission
• Electronic Control Unit
• Shift Selector
• Throttle Position Sensor
• Speed Sensors
• Electro-hydraulic Valve Bodies
• Wiring Harness
• Vehicle Interface Module

2. Definitions

3. Basic Knowledge

• Basic Knowledge Required
• Using the manual
• System overview
• Beginning the troubleshooting process
• Important information in the troubleshooting process

4. Wire Check Procedures

• Checking wire harness for opens / shorts
• Checking inside the transmission for opens / shorts

5. Diagnostic Codes

• Diagnostic code memory
• Code reading & clearing
• Code chart abbreviations
• Code list & description

6. Special Function Inputs & Outputs

7. General Troubleshooting or Performance Complaints

• Intermittent codes
• Solenoid & clutch chart
• Wire & connector chart
• Connector part numbers, terminal part numbers,  tool part numbers & repair instructions
• Throttle position sensor adjustment
• Miscellaneous items
• Hydraulic schematics
• Electrical schematics
• Solenoid & Temperature chart

Allison MD/HD/B Series WTEC II Electronic Troubleshooting Manual

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