Washer Pump

The washer pump is controlled by the driver side windshield wiper motor assembly. The front and rear washer system share the same washer reservoir and a bi-directional washer pump. The washer pump delivers washer fluid to the windshield when the ECU in the driver side windshield wiper motor assembly activates the internal windshield washer relay, which provides voltage to the washer pump. Ground for the washer pump is provided through the rear washer relay (located in the BJB). When activated, the washer pump delivers washer fluid to the windshield.

When the driver side windshield wiper motor assembly energizes the rear washer relay, the rear washer relay provides voltage to the washer pump. Ground for the washer pump is provided through the windshield washer relay (internal to the driver side windshield wiper motor assembly). When activated, the pump delivers washer fluid to the rear window.