Wiper Motor Operation

The wiper motor operation is different for the sedan versus the wagon. The sedan is supplied power, which rotates the windshield washer pump in one direction to provide pressure and fluid flow to the front windshield washer nozzles.

The wagon is similar in that when the windshield washer switch is activated for the front windshield washer system, power is supplied to circuit 238 to rotate the windshield washer pump in one direction to provide pressure and fluid flow to the front windshield washer nozzles. When the windshield washer switch is activated for the rear backglass washer system, power is supplied to circuit 392 to rotate the windshield washer pump in the opposite direction to provide pressure and fluid flow to the rear backglass washer nozzle. A mechanical check valve is used to close the port that is not supplied the pressure and fluid flow.