Diagnostic trouble code (DTC) information

Condition 

Diagnostic trouble code (DTC) AUM-4403 is stored if the quality of the read off signal is bad or if the disc in the 4-CD changer rotates unevenly.

Possible Source 

• Reading fault in the 4 CD changer.
• Defective 4 CD changer.
• Defective CD disc.

Fault symptom[s] 

• No sound reproduction from the 4 CD changer.
• The error message is displayed in the audio unit display.