Poor or No Sound With Audio Disc Changer (With Navigation)

Symptom Troubleshooting: Poor or no sound with audio disc changer

Special Tools Required

- Diagnostics audio disc 07AAZ-SDBA100

Poor or no sound with audio disc changer (with navigation)

NOTE:

- Check the vehicle battery condition first. Testing and Inspection

- Check the connectors for poor connections or loose terminals.

- Disc labels should not be used in the audio unit. They may jam and damage the player mechanism.

1. Insert audio diagnostic CD (T/N: 07AAZ-SDBA100) in the audio disc changer.

Is the CD sound quality normal?
YES - The original disc is faulty.

NO - Go to step 2.


2. Turn the ignition switch to LOCK (0).

3. Disconnect audio disc changer connector B (14P) and XM receiver connector A (14P).

NOTE: Eject all the CDs before removing the audio unit and the audio disc changer to prevent damaging the CD player's load mechanism.

4. Check for continuity between XM receiver connector A (14P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and audio disc changer connector B (14P) terminal No. 4 (the harness shield).





Is there continuity?
YES - There is a short in the wire between the audio disc changer and the XM receiver. Replace the affected shielded harness.

NO - Go to step 5.






5. Check for continuity between the XM receiver connector A (14P) and audio disc changer connector B (14P) according to the table.





Is there continuity?
YES - Go to step 6.

NO - Repair open in the wire between the audio disc changer and the XM receiver.






6. Turn the ignition switch to LOCK (0).

7. Disconnect audio disc changer connector A (18P) and audio unit connector B (14P).

8. Check for continuity between audio disc changer connector A (18P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and audio disc changer connector A (18P) terminals No. 11 and No. 14 (the harness shield).





Is there continuity?
YES - Repair short to ground in the wire(s) between the audio disc changer and the audio unit. Replace the affected shielded harness.

NO - Go to step 9.






9. Disconnect audio unit connector B (14P).

10. Check for continuity between audio disc changer connector A (18P) and audio unit connector B (14P) according to the table.





Is there continuity?
YES - Substitute a known-good audio disc changer Service and Repair, then reconnect all connectors, and recheck. If the symptom/indication goes away, replace the original audio disc changer. Service and Repair If the symptom/indication is still present, replace the audio unit. Audio Unit Removal/Installation

NO - Repair open in the wire(s) between the audio disc changer and the audio unit. Replace the affected shielded harness.