Fault-Tracing Information

Fault-tracing

Checking the connectors
Check voltage feed and ground connection for Trailer module (TRM).
For information about terminal numbers and cable routing, see signal description and corresponding wiring diagram.

Other information
- Checking the power supply and ground terminal Component Tests and General Diagnostics
- Signal specification Signal Specification, Trailer Module (TRM)
- Checking wiring and terminals Checking Wiring and Terminals. Permanent Faults





Was a fault detected?

Yes - Verification

No - Checking CAN cables

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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.
- Switch on the ignition for at least 10 seconds.
Try communicating with the control module by selecting one of the functions for vehicle communication under the Diagnostic tab.

Is communication established?

Yes - VERIFIED

No - VERIFICATION FAILED

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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 connectors

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Checking CAN cables

No Fault Found - Fault-tracing information

DONE - DONE

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