Diesel Data: Automotive Repair

Audio Disc Does Not Load




Audio System Symptom Troubleshooting - Audio disc does not load

Audio disc does not load

NOTE:

- Check the vehicle battery condition first Battery Test.
- 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.
- Make sure the audio disc is compatible with the system (see the Owner's Manual for more information).

1. Turn the ignition switch to ON (II).

2. Turn on the audio unit, and insert a known-good disc to see if the symptom can be duplicated.

Does the disc load?

YES -

Operation is normal. If the disc loads normally, but will not play, go to Audio disc does not play troubleshooting Symptom Troubleshooting.

NO -

Go to step 3.

3. Insert another disc.

Does the disc load?

YES -

The original disc is faulty.

NO -

- With navigation, go to step 4.
- Without navigation, substitute a known-good audio unit Audio Unit Removal/Installation (Without Navigation), and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal/Installation (Without Navigation).

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

5. Measure the voltage between audio disc changer 14P connector terminal No. 1 and body ground.





Is there battery voltage?

YES -

Go to step 7.

NO -

Go to step 6.

6. Measure the voltage between audio unit connector G (14P) terminal No. 14 and body ground.





Is there battery voltage?

YES -

Repair an open in the wire between audio unit connector G (14P) terminal No. 14 and audio disc changer 14P connector terminal No. 1.

NO -

Replace the audio unit Audio Unit Removal/Installation (With Navigation).

7. Turn the ignition switch to ON (II).

8. Measure the voltage between and audio disc changer 14P connector terminal No. 11 and body ground.





Is there less than 0.2 V?

YES -

Go to step 9.

NO -

Repair an open or high resistance in the wire between audio disc changer 14P connector terminal No. 11 and audio unit connector G (14P) terminal No. 7. If the wire is OK, replace the audio unit Audio Unit Removal/Installation (With Navigation).

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

10. Disconnect audio unit connector G (14P) and the audio disc changer 14P connector.

11. Check for continuity between audio disc changer 14P connector terminal No. 2 and body ground.





Is there continuity?

YES -

Repair a short to body ground in the wire between audio disc changer 14P connector terminal No. 2 and audio unit connector G (14P) terminal No. 13.

NO -

Go to step 12.

12. Check for continuity between audio unit connector G (14P) terminal No. 13 and audio disc changer 14P connector terminal No. 2.





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/indication is still present, replace the audio unit Audio Unit Removal/Installation (With Navigation).

NO -

Repair an open in the wire between the audio unit and the audio disc changer.