Faulty Signal

Faulty signal

Checking the components and wiring
- Check the connector for the transmission control module (TCM). Check for contact resistance. Check for oxidation.
Check that the transmission input speed sensor is correctly installed and that there is no damage to the speed sensor.
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 for a short-circuit to ground. Check for an open-circuit.
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. Check for a short-circuit to ground. Check for an open-circuit.

Hint: This diagnostic trouble code (DTC) can be caused by a fault in the transmission input speed sensor.

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




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the components and wiring

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