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.
- The BCM detects a short to battery, short to ground, poor connection or an open in the park lamp relay control circuit when it is trying to energize the park lamp relay.
- The BCM detects a short to ground in the switched park lamp voltage supply circuit.
- The condition above must be present for more than 0.3 seconds.