Signal Too Low or Signal Missing

Signal too low or signal missing

Checking components and wiring
Check signal cable M3 between door control module connector terminal #B1 and central locking motor connector terminal #6. Check for a short-circuit to ground. Check for an open-circuit.
Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- To access and replace the door control module, see Driver's door module / passenger door module (DDM/PDM), replacing Driver's Door Module/Passenger Door Module (DDM/PDM), Replacing
- For information about signals, see Signal specification Signal Specification, Driver Door Module (DDM) / Passenger Door Module (PDM)
- 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
- Reinstall the connectors, components etc.
- Ignition on.
Check that the central locking system functions.

Does the central locking system function?

Yes - Verification completed

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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