Wash Operation
WARNING: This page is about a different car, the 2004 Saturn Ion Red Line, 2004 Saturn Ion 3, 2004 Saturn Ion 2, and 2004 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.
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.