Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Battery Positive Voltage (+) | -- | 1 | -- | -- |
Left Audio Signal (+) | 2, 3 | 2 | 2, 3 | -- |
Right Audio Signal (+) | 4, 5 | 4 | 4, 5 | -- |
Audio Common Signal (-) | 6, 7 | 6 | 6, 7 | -- |
Ground | -- | 1 | -- | -- |
1. DVD Player Inoperative -- headphones and remote control inoperative. 2. No or distorted left audio when listening to DVD. 3. No or distorted left audio when listening to XM radio. 4. No or distorted right audio when listening to DVD. 5. No or distorted right audio when listening to XM radio. 6. No or distorted audio on both channels when listening to DVD. 7. No or distorted audio on both channels when listening to XM radio. | ||||
Circuit Description
The infrared transmitter is located at the bottom of the moitor. When listening to the headphones, the infrared transmitter sends an infrared signal to the headphones. The audio that is sent from the DVD player to the radio is a varying AC voltage. The audio from the radio when tuned to XM™ can be over the audio from the DVD or CD when using the wired headphones plugged into the rear seat audio (RSA). This is considered normal operation.
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Video Entertainment System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the appropriate DVD display.
- Ignition OFF, test for less than 5.0 ohms between the ground circuit terminal 7 and ground.
- Ignition ON, test for B+ between the B+ circuit terminal 9 and ground.
- If all circuits test normal, replace the DVD player.
| ⇒ | If greater than specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If less than specified value, test the B+ circuit for a short to ground or an open/high resistance. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
