Windshield Wiper Operation
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The multifunction switch supplies ground inputs to the wiper/washer module (located behind the Smart Junction Box (SJB) to determine the wiper speed, including low, high and intermittent. The wiper/washer module also receives feedback from the wiper motor to determine the park position. The wiper/washer module sends power to the wiper motor through the high and low circuits.