Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ICM-B121E01

Condition
The video coder converts the video signal from accessories such as the navigator with voice control, so that the audio can be played back via the loudspeakers connected to the Audio module (AUD) or Integrated Audio Module (IAM), depending on the vehicle configuration.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Fault on mute switch.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Activated 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
- Damaged mute switch.

Fault symptom[s]
- Audio other/Other audio problems