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Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Outlook, 2009 GMC Acadia, 2009 Chevrolet Traverse, and 2009 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connectors at all components fed by the LED backlight lamp control circuits listed below.
    • LED backlight lamp control terminal 18 X3
    • LED backlight lamp control terminal 21 X6
  2. Ignition ON, clear the DTC with a scan tool.
  3. Operate the vehicle within the conditions for running the DTC and verify the DTC does not reset.
    • If the DTC resets, test the control circuits for a short to ground. If the circuits test normal, replace the BCM.
  4. Reconnect each component one at a time and verify that the DTC does not reset as current.
    • If the DTC resets as current, test or replace the component responsible for setting the DTC.
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