Signal Missing

Signal missing

Checking the component
The infotainment control module (ICM) has registered that there is no communication with the phone module (PHM).
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 phone module (PHM) 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 phone module (PHM).
In the event of a permanent fault, replace the phone module (PHM).
Remedy as necessary.

Other information:





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.
Make a call so that both the handset and the hands-free system are used. See the instruction manual.

Is the carphone 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

Attempt New Test - Checking the component

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