Conditions for Setting the DTC

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

When the BCM receives a high beam headlamp OFF command and the high beam headlamp relay control circuit is shorted to ground.
When the BCM receives a high beam headlamp ON command and the high beam headlamp relay control circuit is shorted to voltage or open.