Faulty Signal

Faulty signal

Checking the component
The infotainment control module (ICM) has registered that it not valid according to the list stored in the central electronic module (CEM).
The cause of the problem is probably no or unsuccessful software download after infotainment control module (ICM) replacement.

Hint: During software download after control module replacement, the control module serial number is stored in the central electronic module (CEM). This allows the Security on MOST function to approve the control module in the vehicle MOST network.

If the fault remains after software download, try replacing the infotainment control module (ICM).
Remedy as necessary.

Other information
- Infotainment control module (ICM), replacing 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 - 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 the component

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