Fog Lamp (Luxury)

WARNING: This page is about a different car, the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

The front fog lamps only operate with the low beam headlamps and the fog lamp switch in the ON positions. Voltage is supplied to the fog lamp switch and the normally open fog lamp relay coil through the normally closed fog lamp enable relay from the headlamp low beam supply voltage circuit. Battery positive voltage is supplied to the switch side of the fog lamp relay from the fog light 15 A fuse in the fuse block-rear. The fog lamp relay coil side voltage is supplied from the instrument panel lamp ignition 1 voltage circuit. When the headlamps are in DRL mode, the DRL control module grounds the DRL relay control circuit of the fog lamp enable relay, coil side, turning OFF the fog lamps.

When the fog lamp switch is placed in the ON position, voltage is applied to the front fog lamp switch signal circuit. The energized relay supplies voltage to the fog lamps on the front fog lamps supply voltage circuit. The fog lamps are grounded at G108 and G109.