Wash Operation

In the WASH position windshield wiper/washer switch supplies a ground signal to the body control module (BCM). The BCM monitors for a Low signal condition on this circuit to detect when a WASH cycle is requested. After a short delay, the BCM energizes the Wiper relay which will operate the windshield wiper motor at low speed. The wiper motor will continue to operate for 2 wipe cycles after the wash switch is released.