Diagnostic Trouble Code (DTC) Information IAM-B125211
Condition
The Integrated Audio Module (IAM) checks the direct current on the power supply cable for the USB connection.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Direct current (DC) is too low.
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
- Short-circuit to ground in the power supply cable.
Fault symptom[s]
- USB unit/Does not work