Fog Lamps

Fog Lamp operation is possible with the Headlamp Switch in the PARK or HEAD position, but if the Headlamp Switch is in the HEAD position the Fog Lamps are only operational if the Headlamp Dimmer Switch is in the LO position.

With the Headlamp Switch in the PARK or HEAD position (if in the HEAD position, Headlamp Dimmer Switch must be in LO position) voltage is applied through the closed contacts of the Park Lamp Switch to the Fog Lamp Switch. With the Fog Lamp Switch in the ON position, voltage is applied through the closed contacts of the Fog Lamp Switch to the coil (power side) of the Fog Lamp Relay. Voltage is applied to the contact side of the relay through the DRL-FOG FUSE 15. Ground is supplied from the Daytime Running Lamps (DRL) Module to the coil (ground side) of the Fog Lamp Relay (provided that the Headlamp Dimmer Switch is in the LO position if the Headlamp Switch is ON). With both power and ground applied to the coil of the Fog Lamp Relay, the relay energizes and voltage is applied through the closed contacts of the relay to the Fog Lamp ON indicator, the LH Fog Lamp and the RH Fog Lamp. With both power and ground applied to the Fog Lamp ON indicator, the LH Fog Lamp and the RH Fog Lamp, they light. If the Headlamp Dimmer Switch is switched to the HI position when the Headlamp Switch is in HEAD and the Fog Lamp Switch ON, then the DRL Module receives a "High Beam Headlamp" operation signal and disables the Fog Lamp Relay, turning the Fog Lamps OFF.