Video Entertainment System Wireless Headphone Malfunction

Video Entertainment System Wireless Headphone Malfunction

Diagnostic Instructions

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

Diagnostic Fault Information





Circuit Description

The infrared transmitter module contains infrared transmitters for the wireless headphones and the infrared receiver for the video system remote control. The audio that is sent over the DVD audio signal circuits is a varying AC voltage. The infrared transmitter module processes the signal and transmits the audio signals to the headphones. If the display is in the closed position, the infrared signals will not be available for the operation of the wireless headphones and the remote control.

Reference Information
Schematic Reference

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

Component Connector End Views (Connector Views)
Description and Operation

Video Entertainment System Description and Operation (Video Entertainment System Description and Operation)
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)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Note: Test or replace the headphone batteries before performing the circuit/system verification.

1. Turn ON the wireless headphones. Verify the power indicator lamp on the wireless headphone illuminates.

• If the power indicator lamp does not illuminate, replace the wireless headphones.

2. With the Radio ON, DVD playing, verify all of the headphones are working properly.

• If all of the headphones are inoperative, or the sound is distorted, refer to Circuit/System Testing.
• If only one of the headphones is not producing sound, or the sound is distorted, replace the appropriate set of headphones.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the infrared transmitter module.
2. Test for less than 5 Ohms between the ground circuit terminal 12 and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, test for B+ between the accessory voltage circuit terminal 4 and ground.

• If less than the specified range, test the accessory voltage circuit for a short to ground or an open/high resistance.

4. DVD playing, test for AC voltage between the following signal circuit terminals listed below and ground.

* Left DVD audio signal (+) - terminal 1
* DVD audio common (-) - terminal 2
* Right DVD audio signal (+) - terminal 3

• If AC voltage is not present, test the signal circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests normal, replace the radio.

5. If all circuits test normal, replace the infrared transmitter module.

Repair Instructions

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

Control Module References (Programming and Relearning) for Radio replacement, setup, and programming