Fault-Tracing Information

Fault-tracing

Checking the component
Check the power supply and ground terminal to the Infotainment control module (ICM) by switching on the ignition.
Background lighting in the display must light up.





Was a fault detected?

Yes - Checking the voltage and ground terminal

No - Checking CAN cables

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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.
- Switch on the ignition for at least 10 seconds.
Try communicating with the control module by selecting one of the functions for vehicle communication under the Diagnostic tab.

Is communication established?

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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Checking CAN cables

No Fault Found - Fault-tracing information

DONE - DONE

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Checking the voltage and ground terminal
Check the fuses for the infotainment system on rear relay and fuse box.
Check the wiring for the power supply between the rear integrated relay / fusebox and the Infotainment control module (ICM). Check for an open-circuit. Check for a short-circuit to ground.
Also check the intermediate connectors. Check for contact resistance and oxidation
Check the ground cable for open circuit or short-circuiting to voltage.





Was a fault detected?

Yes - Verification

No - Checking CAN cables

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