Signal Missing

Signal missing

Checking wiring and sensors
Check the power supply cable between transmission control module (TCM) terminal #B4 (#A54) and the transmission input speed sensor. Check for a short-circuit to supply voltage.
Check the signal cable between transmission control module (TCM) terminal #B3 (#A53) and the transmission input speed sensor. Check for a short-circuit to supply voltage.
Remedy as necessary.

Other information
- Connecting the breakout box, AW55-50/51SN Connecting Breakout Box, Transmission Control Module (TCM)
- Transmission control module (TCM) Service and Repair
- Signal specification, AW55-50/51SN Signal Specification, Transmission Control Module (TCM)
- Checking wiring and terminals Checking Wiring and Terminals

Transmission Input Speed Sensor:

Continue - Verification

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Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Start the engine. Allow the engine to idle
- Gear selector in position P
- Read off the transmission input speed.
Depress the accelerator pedal (AP) and check that engine speed (RPM) is updated.
Compare with the engine speed (RPM).





Is the speed updated?

Yes - VERIFIED

No - VERIFICATION FAILEDPAPER

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information

Attempt New Test - Checking wiring and sensors

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