Wiper and Washer Systems: Description and Operation

The Interval Wiper/Washer System allows the driver to select LO speed, HI speed, or interval (INT) wiping action. In INT, the wipes can be spaced one to fifteen seconds apart.

During washer operation, with the Wiper Switch in the LO or HI position during washer operation, normal wiping action occurs. If the Wiper Switch is in the OFF or INT position during washer operation, the wipers operate in LO speed. The wipers will continue to operate in LO speed for a few cycles after the washer button is released to dry off the windshield. The wipers then return to OFF or INT operation.

During Interval operation, the wipers make single low speed wipes separated by a variable length pause.

When parking is complete, the wiper motor is braked to a stop by shunting the L and C terminals of the motor through the wiper motor switch. Braking takes place when the wiper motor switch moves to the PARK position. The wiper motor L terminal is connected to terminal C through the PARK contact of the wiper motor switch and the deenergized contact of the module relay.