GM Service Manual Online
For 1990-2009 cars only

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

Video System Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Video Entertainment System Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the appropriate DVD display.
  2. Ignition OFF, test for less than 5.0 ohms between the ground circuit terminal 7 and ground.
  3. If greater than specified range, test the ground circuit for an open/high resistance.
  4. Ignition ON, test for B+ between the B+ circuit terminal 9 and ground.
  5. If less than specified value, test the B+ circuit for a short to ground or an open/high resistance.
  6. If all circuits test normal, replace the DVD player.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Video Display Replacement