Signal Missing

Signal missing

Checking for a short-circuit
If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults can occur for a number of different reasons. The fault is evaluated depending on how it occurs.
Check the signal cable between control module terminal #C9 (#30) and control panel terminal #8. Check for a short-circuit to ground.
If a fault is found, replace the signal cable.
Try a new control panel if no fault was found.
Remedy as necessary.

Other information:
- Rotary switch, front door window regulator Service and Repair
- Signal specification Signal Description, Driver's Door Module / Passenger Door Module (DDM/PDM)
- Checking wiring and terminals Checking Wiring and Terminals





Continue - Verification

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Verification




Verification door mirror control

Verification

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








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Check that the door mirrors can be operated.

Do the controls for the power door mirror function?

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 for a short-circuit

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