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 - 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 specification Signal Specification, Accessory USB Unit (AUU)
- Location of components 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 specification Signal Specification, Accessory USB Unit (AUU)
- Location of components 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
Attempt New Test - Information
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