Wiper/Washer System Operation

In addition to the features of a conventional (non-pulse) wiper system (mist, low, and high speeds), the pulse-type windshield wiper/washer system includes an operating mode in which the wipers make single sweeps with an adjustable time interval between sweeps. The time interval is controlled by a solid-state timer in the wiper motor cover. The duration of the delay interval is determined by the delay resistor in the wiper/washer switch.

When the wiper switch is turned off, the wiper motor returns the wipers to the end of the sweep (innerwipe) position and then reverses. This activates the external depressed-park mechanism in order to lower the wipers to the park position.