Troubleshooting

Troubleshooting ECM-P170900

Checking components and wiring

Hint: If diagnostic trouble code for gear position sensor is stored in transmission control module (TCM), then troubleshoot this diagnostic trouble code first.

- Check transmission control module (TCM) connector for contact resistance and oxidation.
Check the signal cable for open circuit, short-circuit to voltage and short-circuit to ground.
Measure between engine control module (ECM) #B15 (#C15) and transmission control module (TCM) #5.
Remedy as necessary.

Hint: Read off the gear position sensor's signals by clicking on the symbol for VCT2000.

Other information
- Connecting the breakout box, B8444S Connecting the Breakout Box
- Signal specification, engine control module (ECM), B8444S Signal Specification
- 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
- Reconnect the connectors, components, etc.
- Ignition on
- Read off the gear position sensor's signals.
Check that the gear position sensor's signals are correct.
Signal via direct-connected cable and signal via CAN-communication shall match each other as well as with selected gear position.





Is the function OK?

Yes - Troubleshooting procedure complete

No - 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 components and wiring

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