Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information IAM-B121C49

Condition
The Integrated Audio Module (IAM) can detect faults on the hard disk after a check procedure has been performed.
The diagnostic trouble code is stored if the control module detects:
- Internal fault on the hard disk
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Self-test

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.





Substitute value
- None.

Possible source
- Damaged integrated audio module (IAM).

Fault symptom[s]
- Navigation/Voice guidance does not work
- Navigation/Locations cannot be stored/disappears
- Navigation/Does not work
- Navigation/Other navigation problems