Faulty Signal

Faulty signal

Checking the shift-lock function




- Ignition on
- Gear selector in position N
- Try moving the gear selector to another position without depressing the brake pedal. It should not be possible to move the gear selector
- Depress the brake pedal and try moving the gear selector to another position. It should now be possible to move the gear selector.
The fault is permanent if the function is faulty.
If the function is correct, this is an indication that the fault was present previously but is not active at the moment, i.e. an intermittent fault.





Continue - Checking the wiring and component

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Checking the wiring and component




- Ignition off.
Check connector A (16-pin) for the transmission control module (TCM). Check for contact resistance. Check for oxidation.
Check the cable between transmission control module (TCM) terminal #A13 (#A43) and gear selector module (GSM) terminal #3. Check for an open-circuit. Check for a short-circuit to ground.

Hint: With the ignition switched on, the voltage with the gear selector in position N should be 0 V. With the gear selector in position R or D it should be Ubat.

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









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.
- Ignition on
- Gear selector in position N.
Try moving the gear selector to another position without depressing the brake pedal. It should not be possible to move the gear selector.
Depress the brake pedal and try moving the gear selector to another position. It should now be possible to move the gear selector.

Was the function correct?

Yes - VERIFIED

No - VERIFICATION FAILEDPAPER

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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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 shift-lock function

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