Internal Fault

Internal fault

Checking the component








- Disconnect any connection from the socket for the tow hitch connector
- Ignition off, wait for at least 1 minute
- Break the power supply to the trailer module (TRM) by disconnecting the battery negative lead. Wait 10 seconds
- Connect the battery negative lead.

Caution! Do not touch the terminal pins in the trailer module (TRM). There is a risk of static discharge which could damage the control module.

Download new software and reprogram the trailer module (TRM).
If the fault remains after reprogramming, replace the trailer module (TRM).

Other information
- Signal specification Signal Specification, Trailer Module (TRM)
- For further information about cable routing and terminals, see the wiring diagram

Continue - Verification

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Verification




Verification

Hint: After carrying out the repair check that the fault has been remedied.








- Ignition off, wait for at least 1 minute
- Disconnect the battery negative lead
- Reinstall the connectors, components etc.
- Connect the battery negative lead.
- Switch on the ignition. Wait 10 seconds.
Read diagnostic trouble codes by clicking the VCT2000 symbol.
If the fault is intermittent, the fault has been remedied.





Is the fault intermittent?

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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FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking the component

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