Rear Wiper/Washer System Operation

The rear wiper motor module is part of the rear wiper motor assembly and controls wiper motor operation. Battery voltage supplied to the wiper motor assembly is used to operate the wiper motor in all modes and to return the rear wiper arm to the park position after the ignition is turned off. Accessory voltage supplied to the rear wiper/washer switch is used to supply the rear wiper switch signal circuits and the rear washer pump. When the rear wiper switch is in the DELAY position the accessory voltage to the rear wiper/washer switch is closed to the wiper switch signal circuit. The accessory voltage on the wiper switch signal circuit causes the wiper motor module to operate the wiper motor in the DELAY mode. The rear washer control circuit is used to provide the operating voltage for the rear washer pump for as long as the rear washer switch is pressed. The rear washer control circuit is also used as a wash signal to the rear wiper motor module. When the rear wiper/washer switch or ignition switch is turned OFF during a rear wiper motor cycle, the park switch within the wiper motor assembly supplies battery voltage to continue wiper motor operation until the wiper motor reaches the park position and the switch opens.