Washer System
WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
When the wiper/washer switch is placed in the WASH position, the SCCM sends the request to the windshield wiper motor through the LIN . The windshield wiper motor controls the direction of the washer pump to direct washer fluid to the windshield or rear window.