Wash Operation

In the WASH position windshield wiper/washer switch supplies voltage on the signal circuit of the windshield washer pump to the BCM. The BCM then supplies voltage on the control circuit to the WASHER PUMP Relay 39 and the relay controls the windshield washer pump operation. The BCM monitors this voltage input to detect when a WASH cycle is requested so it can enable the wipers. The BCM energizes the WPR Relay 70 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.