Symptom Troubleshooting

Rear Entertainment System Symptom Troubleshooting - No sound/no display with auxiliary video unit inputs

No sound/no display with auxiliary video unit inputs

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check that the auxiliary device is properly connected, and has fresh batteries or power source connected.
- Do not connect an RCA type shorting plug with the RES auxiliary jack assembly 14P connector, or system damage may occur.
- You need to switch the audio-navigation unit REAR PWR button on for the rear display, remote controls, and sound to operate.

1. Connect an auxiliary video source, and check the volume/display operation.

Does the display operate properly and does the audio sound normal?

YES -

Operation is normal at this time.�

NO -

Go to step 2.

2. Substitute a known-good auxiliary video unit, and recheck.

Does the auxiliary video unit operate properly?

YES -

Original auxiliary video unit faulty.�

NO -

Go to step 3.

3. Remove the RES auxiliary jack assembly RES Auxiliary Jack Assembly Replacement. Check that the RES auxiliary jack assembly is properly connected.

Is the RES auxiliary jack assembly connected properly?

YES -

Go to step 4.

NO -

Reconnect the connector, and recheck.�

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

5. Disconnect these items:

- Audio-Navigation unit connector C (28P)
- Audio-Navigation unit connector E (16P)
- RES auxiliary jack assembly 14P connector

6. Check for continuity between body ground and audio-navigation unit connector C (28P) and connector E (16P) 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 RES auxiliary jack assembly. Replace the affected shielded harness.�

NO -

Go to step 7.

7. Check for continuity between the terminals of audio-navigation unit connector C (28P) and connector E (16P) according to the table.









Is there continuity between any of the terminals?

YES -

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

NO -

Go to step 8.

8. Check for continuity between audio-navigation unit connector C (28P), connector E (16P), and RES auxiliary jack assembly 14P connector according to the table.









Is there continuity?

YES -

Go to step 9.

NO -

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

9. Connect an RCA type shorting plug to each audio input (R and L).

NOTE: Do not connect the RCA type shorting plug with the RES auxiliary jack assembly 14P connected, or system damage may occur.

10. Check for continuity between RES auxiliary jack assembly 14P connector terminals No. 10 and No. 12.





Is there continuity?

YES -

Go to step 11.

NO -

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

11. Remove the RCA type shorting plug(s) and check the same terminals again for continuity.

Is there continuity?

YES -

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

NO -

Substitute a known-good audio-navigation unit Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation. If the symptom is still present, replace the rear controller and screen Service and Repair.�