Fault-Tracing

Fault-tracing TCM-0071

Check the park neutral position (PNP) switch status




- Ignition on
- Push down the brake pedal.
- Read off the park neutral position (PNP) switch status
Move the gear selector lever between positions P,R, N and D.
In positions P and N the status must be "Start permitted", in other positions the status must be "Start not permitted".
When the function is not correct this indicates that the fault is permanent.
When the function is correct it means that the fault was present previously but is not active now. There is an intermittent fault.









Select Continue

Continue - Checking wiring and sensors

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Checking wiring and sensors




- Ignition off
Check connector A (16-pin) for the transmission control module (TCM). Check for contact resistance and oxidation.
Check the cable between the transmission control module (TCM) and the engine control module (ECM). Check for a short-circuit to ground. For information about terminal numbers and cable routing, see signal description and corresponding wiring diagram.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting Breakout Box, Transmission Control Module (TCM)
- Signal description Signal Description. Transmission Control Module (TCM)
- To access connector A, see: Transmission control module (TCM), replacing Service and Repair
- 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
- Read off the park neutral position (PNP) switch status
Move the gear selector lever between positions P,R, N and D.
In positions P and N the status must be "Start permitted", in other positions the status must be "Start not permitted".





Is the function OK?

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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Check the park neutral position (PNP) switch status

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