Windshield Wipers/Washer System Description

The windshield wiper/washer system consists of a wiper/washer switch, washer solvent container with a pump, a wiper arm and blade assemblies, and a wiper drive system. The wiper drive system is installed on the vehicle as a module. The wiper drive system module consists of a wiper motor assembly and wiper transmission assembly assembled on a tube frame. The wiper/washer system is a pulse (delay) type. Pulse timing and demand wash functions are controlled electronically.

In addition to the features of a conventional (non-pulse) wiper system (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 assembly. The duration of the delay interval is determined by the delay rheostat in the wiper/washer switch assembly.

The wiper motor is protected by a circuit breaker. If the wipers are blocked (by snow or ice, for example), the circuit breaker will open the circuit. The circuit breaker resets automatically when it cools.