Checking Accessory USB Unit (AUU)
Checking Accessory USB unit (AUU)
Information
The fault may be caused by:
- Malfunction in external sound source.
- Faulty software.
- Loose connections in leads.
- Internal fault in the Accessory USB unit (AUU).
Remedy in the following order.
Check function of the external sound source.
Load the Accessory USB Unit (AUU) with new software.
Continue.
Continue - Verification
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Verification
Corrective actions
- Ignition switch position II.
- Check that the external sound source is connected correctly to the control module.
- Check function of the Accessory USB Unit (AUU).
Is the function OK?
Yes - FAULT FOUND
No - Information
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Information
Remedy in the following order.
- Check the connectors and cables. Check especially the USB-connection for loose connection.
Other information:
- Signal description Signal Specification, Accessory USB Unit (AUU)
- Component location Locations
- Universal Serial Bus (USB) Module Universal Serial Bus (USB) Module
Continue - Verification
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Verification
Corrective actions
- Ignition switch position II.
- Check that the external sound source is connected correctly to the control module.
- Check function of the Accessory USB Unit (AUU).
Is the function OK?
Yes - FAULT FOUND
No - Information
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Information
Replace Accessory USB Unit (AUU).
Other information:
- Signal description Signal Specification, Accessory USB Unit (AUU)
- Component location Locations
- Universal Serial Bus (USB) Module Universal Serial Bus (USB) Module
Continue - Verification
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Verification
Corrective actions
- Ignition switch position II.
- Check that the external sound source is connected correctly to the control module.
- Check function of the Accessory USB Unit (AUU).
Is the function OK?
Yes - FAULT FOUND
No - Information
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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 - FAULT-TRACING FAILED
No - Attempt New Test
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FAULT-TRACING FAILED - FAULT-TRACING FAILED
Attempt New Test - Information
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