Unable To Select Audio Disc Changer (With Navigation)

Audio System Symptom Troubleshooting - Unable to select audio disc changer (with navigation)

Unable to select audio disc changer (with navigation)

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.

1. Insert a known-good disc into the audio disc changer.

Does the disc load?

YES -

Go to step 2.

NO -

Go to audio disc does not load troubleshooting [1][2]Audio Disc Does Not Load.�

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

3. Disconnect audio-navigation unit connector E (14P), XM receiver connector A (14P), USB adapter unit connector A (14P) (if equipped).

4. Disconnect the audio disc changer 13P connector.

5. Check for continuity between the audio unit connector E (14P) and body ground according to the table.









Is there continuity?

YES -

There is a short to body ground in the wire(s) between the audio-navigation unit and the audio disc changer. Replace the affected shielded harness.�

NO -

Go to step 6.

6. Check for continuity between the terminals of audio-navigation unit connector E (14P) according to the table.









Is there continuity between any of the terminals?

YES -

There is a short in the wire(s) between the audio-navigation unit and the audio disc changer. Replace the affected shielded harness.�

NO -

Go to step 7.

7. Check for continuity between the audio-navigation unit connector E (14P) and the audio disc changer 13P connector according to the table.









Is there continuity?

YES -

Substitute a known-good audio disc changer Service and Repair, and recheck. If the symptom/indication goes away, replace the original audio disc changer Service and Repair. If the symptom is still present, substitute a known-good audio-navigation unit ('07-09 models) Audio-Navigation Unit Removal/Installation or audio-navigation unit ('10 model) Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit ('07-09 models) Audio-Navigation Unit Removal/Installation or audio-navigation unit ('10 model) Audio-Navigation Unit Removal/Installation.�

NO -

There is an open in the wire(s) between the audio-navigation unit and the audio disc changer.�