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Home >> Chevrolet >> 2010 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B1480 >> Circuit/System Testing
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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 appropriate harness connector at each component fed by the courtesy lamp high control circuit.
  2. Ignition ON, with a scan tool clear the DTC.
  3. Operate the system within the Conditions for Running the DTC and verify the DTC does not reset.
    • If the DTC resets, test the courtesy lamp high control circuit for a short to ground. If the circuit tests normal, replace the BCM.
  4. Connect each component one at a time and verify that the DTC does not reset.
    • If the DTC resets, test or replace the component responsible for setting the DTC.
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