Wired Headphone Sound Is Weak, Distorted, Volume Does Not Change, or There Is No Sound

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 Battery Test.
- You need to switch the audio-navigation unit REAR PWR button on for the rear display, remote controls, and sound to operate.
- Check the headphone battery condition.

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 RES auxiliary jack assembly to check their condition.

Do all the ports have the same symptom?

YES -

Go to step 3.

NO -

Replace the RES auxiliary jack assembly RES Auxiliary Jack Assembly Replacement.�

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.�

4. Disconnect the RES auxiliary jack assembly 14P connector and the rear controller and screen 24P connector.

5. Check for continuity between body ground and rear controller and screen 24P connector according to the table.









Is there continuity?

YES -

There is a short to body ground in the wire(s) between the rear controller and screen and the RES auxiliary jack assembly. Replace the affected shielded harness.�

NO -

Go to step 6.

6. Check for continuity between the terminals of rear controller and screen 24P connector according to the table.









Is there continuity between any of the terminals?

YES -

There is a short in the wires between the rear controller and screen and the RES auxiliary jack assembly. Replace the affected shielded harness.�

NO -

Go to step 7.

7. Check for continuity between rear controller and screen 24P connector and RES auxiliary jack assembly 14P connector according to the table.









Is there continuity?

YES -

Replace the RES auxiliary jack assembly RES Auxiliary Jack Assembly Replacement.�

NO -

There is an open in the wire(s) between the rear controller and screen and the RES auxiliary jack assembly. Replace the affected shielded harness.�