Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
Diagnostic trouble code (DTC) AUM-4401 is stored if the 4 CD changer focusing does not function.

Possible source
- Defective 4 CD changer.
- Defective CD disc.
- Disc inserted incorrectly.
- Condensation on disc or 4 CD changer.

Fault symptom[s]
- No sound reproduction from 4 CD changer.
- The error message is displayed in the audio unit display.