Faulty Signal

Faulty signal

Checking components and wiring

Note! Check whether diagnostic trouble code (DTC) TRM-E001 has also been stored. If diagnostic trouble code (DTC) TRM-E001 has been stored, fault-tracing must be carried out in accordance with fault-tracing for diagnostic trouble code (DTC) TRM-E001.If diagnostic trouble code (DTC) TRM-E001 has not been stored, perform fault-tracing as follows.








- 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
- Disconnect connector B from the trailer module (TRM).

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.

Check the connectors to the trailer module (TRM) and the vehicle right-hand stop lamp. Check for damage to pins and terminals in the connectors. Also check the connectors. Check for contact resistance and oxidation. Check for loose connections.
Remedy as necessary.
Check the cable between the trailer module (TRM) and the vehicle right-hand stop lamp. Check for an open-circuit.
Check the cable between trailer module (TRM) terminal #B3 and vehicle right-hand stop lamp terminal #A1.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting Breakout Box, Trailer Module (TRM)
- Signal specification Signal Specification, Trailer Module (TRM)
- For further information about cable routing and terminals, see the wiring diagram
- Checking wiring and terminals Checking Wiring and Terminals

Continue - Verification

-------------------------------------------------

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.
- Depress the brake pedal 10 times. Wait for 1 second between each time.
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

------------------------

VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

-------------------------------------------------

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

------------------------

FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking components and wiring

-------------------------------------------------