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.