Circuit/System Testing
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
If rear video display turns ON but the video is blank, use diagnostic Video Display is Poor or Blank .
- Disconnect the rear video display harness connector. With the ignition ON, operate the rear entertainment system. Verify there is voltage on the remote enable signal circuit.
- If voltage is not present on the remote enable signal circuit, test and repair open or short to ground.
- If the enable signal circuit tests normal but there is no voltage, replace the radio.
- Test and repair open, short to ground and short to power on the ground and battery positive voltage circuits at the rear video display.
- If the video display power and ground circuits test normal, replace the rear video display.