Symptom Troubleshooting

Rear Entertainment System Symptom Troubleshooting - Wired headphone sound is weak, distorted, volume does not change, or there is no sound

Wired headphone sound is weak, distorted, volume does not change, or there is no sound

NOTE:

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

1. Substitute a known-good wired headphone set, and recheck.

Does the symptom go away?

YES -

Original wired headphone set is faulty.�

NO -

Go to step 2.

2. Plug the wired headphones into the other ports of the auxiliary jack assembly to check their condition.

Do all the ports have the same symptom?

YES -

Go to step 3.

NO -

Faulty auxiliary jack assembly.�

3. Check that the wired headphone jack is properly connected.

Is the headphone jack connected properly?

YES -

Go to step 4.

NO -

Reconnect the wired headphone connector, and recheck the function.�

4. Disconnect the auxiliary jack assembly 14P connector and audio unit connector B (30P).

5. Check for continuity between audio unit connector B (30P) 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 unit and the auxiliary jack assembly. Replace the affected shielded harness.�

NO -

Go to step 6.

6. Check for continuity between audio unit connector B (30P) according to the table.









Is there continuity?

YES -

There is a short in the wires between the audio unit and the auxiliary jack assembly. Replace the affected shielded harness.�

NO -

Go to step 7.

7. Check for continuity between audio unit connector B (30P) and auxiliary jack assembly 14P connector according to the table.













Is there continuity?

YES -

Faulty auxiliary jack assembly.�

NO -

There is an open in the wire(s) between the audio unit and the auxiliary jack assembly. Replace the affected shielded harness.�