Diagnostic Aids

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

If the headlamp relay control circuit is open, the ALC headlamps will be inoperative.
In the headlamp relay control circuit is shorted to ground, the ALC headlamps will be always on.
If the DTC is a history DTC, the problem may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections .