Signal Missing

Signal missing

Checking the component
The infotainment module (ICM) has registered loss of communication with the Accessory USB unit (AUU).
If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults may occur at start up of the Accessory USB unit (AUU) or may be a different type of fault that occurs on different occasions. The fault is evaluated depending on how it occurs.
In the event of a permanent fault, replace the Accessory USB unit (AUU).
Remedy as necessary.

Other information
- Universal Serial Bus (USB) Module Universal Serial Bus (USB) Module






Continue - Verification

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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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Verification

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

- Ignition off.
- Reinstall the connectors, components etc.
- Ignition on.
Check function of the Accessory USB Unit (AUU).

Is the system working?

Yes - Fault Found

No - Fault-tracing information

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