The infrared transmitter is internal to the DVD display and is grounded and powered by the DVD control module. When listening to the headphones, the infrared transmitter sends an infrared signal to the headphones. There are two channels on the headphones, the first channel is dedicated to the driver side video screen, and the other channel is dedicated to the passenger side. The audio that is sent over the DVD audio signal circuits is a varying AC voltage.

Schematic Reference

Video System Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

Note: Test or replace the headphone batteries before performing Circuit/System Verification.

1. Verify there are no obstructions that may block the infra-red port located above the video display screen.
2. Radio ON, DVD playing, verify all of the headphones are working properly and the power indicator illuminates.

⇒	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 on either channel, or the sound is distorted, replace the appropriate set of headphones.

3. Using a known good pair of wired headphones, plug them into both of the headphone jacks on the front of each DVD Monitor.

⇒	If there is audio emitted from the wired headphones, and not the wireless headphones, replace the appropriate display.

Note: Select both channels by switching the channel selector located on the side of the headphones and verify the volume is turned up. Also verify that the headphones are not in mute mode. Press the Sound Around ON/OFF button on the remote to change audio muting status.

1. Ignition OFF, disconnect the appropriate seat headrest X2 connector at the monitor.
2. Ignition ON, DVD playing, test for 15-40 mV A/C between the terminals on the monitor listed below and ground.

•	Right Audio Signal -- terminal 3

•	Left Audio Signal -- terminal 4

⇒	If the not within the specified range, replace the appropriate DVD display.

3. Ignition OFF, reconnect the harness connector at the monitor.
4. Disconnect the appropriate seat headrest X2 connector at the DVD control module.
5. Ignition ON, DVD playing, test for 15-40 mV A/C between the terminals on the monitor listed below and ground.

•	Right Audio Signal -- terminal 3

•	Left Audio Signal -- terminal 4

⇒	If the not within the specified range, replace the wiring harness.

6. If all circuits test normal, replace the DVD control module.