Video Entertainment System Inoperative

Video Entertainment System Inoperative

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions)provides an overview of each diagnostic category.



Circuit / System Description

This dual head rest display system is powered through the a/v box. The a/v box receives power through the power filter module from the special equipment options fuse. The ground circuit for the a/v box also goes through the power filter module. The DVD Player the FM modulator and both of the headrest video displays get their power and ground circuits via the a/v box.


Diagnostic Aids

The display screens in this system are wired exactly the same. In the event that one display has questionable operation, the connectors for the screens can be swapped at the a/v box to test for a display component failure or a circuit failure.


Reference Information
Schematic Reference

Video System Schematics (Video System Schematics)
Connector End View Reference

Component Connector End Views (Component Connector End Views)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)



Circuit/System Testing

1. Ignition OFF, disconnect the a/v box harness connector C2.
2. Ignition ON, verify that a test lamp illuminates between the ground circuit terminal 9 and battery +.

• If the test lamp does not illuminate, test the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 7 and ground.

• If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
• If the circuit tests normal and the SEO ACCY fuse is open, test the B+l circuit terminal 7 for a short to ground.

4. Ignition OFF, connect the a/v box harness connector C2
5. Ignition ON, operate the DVD player in play mode.
6. Is the system operating normally.

• If yes, review the system operation with the customer.


• If no, test the power and ground circuits to the DVD player.

7. If the circuits test ok , replace the a/v box,



Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.


Refer to the accessory installation instructions for replacement.