Faulty Signal

Faulty signal

Checking the component
The infotainment module (ICM) has registered that the Bluetooth phone module (BPM) is invalid according to the list stored in the central electronic module (CEM).
The cause of the fault is probably that no software has been downloaded or that software downloading has failed after replacing Bluetooth phone module (BPM).

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 on MOST function can approve the control module in the MOST network in the car.

If the fault persists after software download, try replacing the Bluetooth phone module (BPM).
Remedy as necessary.

Other information





Continue - Verification

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Fault-tracing information

Attempt New Test - Checking the component

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Verification

Hint: After carrying out the repair, check that the fault has been remedied.

- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
Check the function of the Bluetooth phone module (BPM).

Is the carphone working?

Yes - FAULT FOUND

No - Fault-tracing information

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