Multifunction Switch
The multifunction switches control various components electrically. The headlamp switch sends constant voltage to the headlamps when placed in the ON position, while the flash-to-pass is a momentary switch used to send voltage to the headlamp high beams only. The headlamp high beam/low beam switch sends voltage to the low or high beam headlamps while the headlamps are on. The turn signal switch portion of the multifunction switch operates the left and right turn signals. The windshield wiper switch function uses a ground signal to activate the various wiper modes and the wiper/washer.
For diagnosis and testing of the multifunction switch, refer to EXTERIOR LIGHTING for headlamps and turn signal concerns, and WIPERS AND WASHERS for wiper and washer concerns.