Circuit/System Testing
WARNING: This page is about a different car, the 2006 Chevrolet Monte Carlo and 2006 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect all of the LED dimming components on the LED dimming supply circuit.
- Ignition ON, with a scan tool clear the DTC.
- Operate the vehicle within the conditions for running the DTC and verify the DTC does not reset.
- If the DTC resets, test the LED dimming supply circuit for a short to ground. If the circuit test normal, replace the BCM.
- 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.