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Home >> Chevrolet >> 2013 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Lighting System) >> Diagnostic Information and Procedures >> DTC B2625 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: Each component on backlighting control circuit may need to be disconnected to isolate a short to voltage or short to ground. Use the schematic to identify the following:
    • All backlighting components that the vehicle is equipped with
    • Component locations on the backlighting dimming control circuit
    • Each component's control and ground circuit terminals
  1. Ignition OFF, disconnect the harness connector at any component on the interior backlighting control circuit.
  2. Scan tool disconnected, interior lamps OFF, doors CLOSED, test for less that 10 Ω between the ground circuit terminal and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Connect a test lamp between the control circuit terminal and ground.
  4. Ignition ON, command the LED Backlight Dimming ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the K9 BCM.
    • If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
  5. If all circuits test normal, test or replace the appropriate component.
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