Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information IAM-U300362

Condition

Note! This trouble code is only relevant for troubleshooting and action in the following cases:

- The trouble code is active in the present driving cycle and has been active for a longer period of time.
- The customer experiences malfunction that can be attributed to the trouble code.
The integrated audio module (IAM) checks its own system voltage by comparing the DC voltage with the system voltage in the central electronic module (CEM).
The diagnostic trouble code (DTC) is stored if the control module detects that:
- The control module's system voltage is at least 2 V lower than the system voltage in the Central electronic module (CEM).
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition switch position II.

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.
- Open-circuit in the power supply cable.

Fault symptom[s]
- Audio system does not function