Wash Operation

In the WASH position windshield wiper/washer switch supplies voltage on the control circuit of the windshield washer pump to the BCM and the windshield washer pump. The BCM monitors this voltage input to detect when a WASH cycle is requested so it can enable the wipers. The BCM energizes the Wiper 1 relay which will operate the windshield wiper motor at low speed.

The windshield washer pump sprays solvent onto the windshield. The windshield wipers operate at low speed for 3-5 wipes and returns to the park position.