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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Cellular, Entertainment, And Navigation) >> Diagnostic Information and Procedures >> Video Display is Poor or Blank >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

One Display Inoperative 

  1. Turn ON the ignition. Play a disc in the DVD player. Press the power button on the suspect display. Select source a/v 1 using the menu button on the face plate.
    • If the DVD display powers up and plays the DVD, review system operation with the customer.
    • If the DVD display is dark or just the blue backlighting is on, swap the display harness connectors at the a/v box.
    • If the faulty condition follows the display. replace the display.
    • If the faulty condition is in the same position. replace the a/v box.
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