Fog Lamps

With the ignition switch in the ON position, and the park lamps or low beam headlights on, the fog lights will illuminate when the driver presses the fog lamp switch. The FOG LPS fuse in the Right Hand Instrument Panel (RH IP) junction block supplies battery positive voltage to the fog lamp relay coil. When the fog lamp switch is pressed, the Body Control Module (BCM) fog lamp switch input is grounded. Ground is provided at G202. The BCM will then energize the fog lamp relay control circuit. The current flow is now from the fog lamp relay to both front fog lamps and to ground. Ground is provided at G101. The state of the fog lamps, either ON or OFF, will remain the same until the fog lamp switch is pressed again, or the ignition switch is cycled OFF and ON. Fog lamp operation will be cancelled whenever the park lamps, are turned OFF or the high beam headlights have been selected.