The rear wiper/washer system consists of the following components:

The rear wiper motor module is part of the rear wiper motor assembly and controls wiper motor operation. System voltage is supplied to the switch, washer pump, and wiper motor by two retained accessory power circuits. The washer switch controls the washer pump by providing a path to ground when pressed. The rear washer control circuit is also used as a wash signal to the rear wiper motor module. The WASH command on the washer control circuit will cause the wiper motor to operate at low speed for as long as the switch is held in the closed position and 2 cycles after being released.