Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information IAM-B1A021A

Condition
The integrated audio module (IAM) checks impedance in the front right door speaker.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Impedance too low.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Start-up of the control module.

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
- Short circuit between signal cables to speaker.
- Internal fault in the speaker.

Fault symptom[s]
- No sound from loudspeakers