Faulty Signal

Faulty signal

Checking the component
The infotainment control module (ICM) has registered that the Audio module (AUD) is not approved according to the list stored in the central electronic module (CEM).
The cause of the fault is probably that software has not been downloaded or that the download failed when replacing the Audio module (AUD).

Hint: When downloading software after replacing a control module in the infotainment system, the serial number is stored in the central electronic module (CEM). This is so that the security on MOST function can approve the control module in the MOST network in the car.

If the fault remains after the software is downloaded, try replacing the Audio module (AUD).
Remedy as necessary.

Other information:
- To replace the audio module (AUD), see Audio module (AUD), replacing Audio Module (AUD), Replacing.





Continue - Verification

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

Verification




Verification

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








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on for at least 12 seconds.
Read off the control module ID from the audio module (AUD) by clicking on the VCT2000 symbol.





Can the control module ID be read off?

Yes - Troubleshooting procedure complete

No - 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

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

Attempt New Test - Checking the component

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