Conditions for Setting the DTC
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- The BCM detects a short to ground or open in the headlamp relay control circuit when the BCM is not trying to energize the headlamp relay.
- The condition above must be present for more than 0.3 seconds.