Signal Missing

Signal missing

Checking the component
The infotainment control module (ICM) has registered that there is no communication with the antenna module (ATM).
If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults can be caused by interference at start up of the antenna module (ATM) or may be a different type of fault which occurs on different occasions. The fault is evaluated depending on how it occurs. If the fault recurs, replace the antenna module (ATM).
If the fault is permanent, replace the antenna module (ATM).
Remedy as necessary.

Other information:
- To replace the antenna module (ATM), see Receiver AM/FM (ATM), 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 for at least 12 seconds.
Read off the control module ID from the antenna module (ATM) by clicking on the VCT2000 symbol.





Can the control module ID be read off?

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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