Wiper/Washer System Operation
WARNING: This page is about a different car, the 2007 Saturn Sky. However, it is still accessible from the selected car via links, so may be relevant.
The windshield wiper motor is a 2 speed motor and is operated at low speed in all wiper modes except for high. Accessory voltage is supplied to the windshield wiper/washer switch from the WPR Fuse located in the BCM fuse block when the ignition is in the ACCESSORY or ON positions. The body control module (BCM) controls all wiper motor mist, wash, delay and low speed operations based on inputs received from the wiper/washer switch. The washer pump and high speed wiper operations are controlled directly by the wiper/washer switch.