Faulty Signal

Faulty signal

Checking the component
The infotainment control module (ICM) has registered that it is invalid 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 after replacing the infotainment control module (ICM).

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

Try replacing the infotainment control module (ICM) if the fault remains after the software is downloaded.
Remedy as necessary.

Other information
- Information and Entertainment Display Service and Repair





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.
Activate the infotainment control module (ICM) by pressing the POWER button.
Check that the display lights.
Check that the sound source can be selected and that playback is working.

Is the infotainment control module (ICM) working?

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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Attempt New Test - Checking the component

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