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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 306 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Dual DVD Rear Seat Entertainment Headrest Wireless Headphones Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
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.
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