Pulse Wipe Mode
WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
When the control knob on the control stalk of the multi-function switch is depressed to the momentary Wash position for less than about one-half second, the instrument cluster sends an electronic washer switch message to the FCM, then the FCM the energizes the wiper on/off relay for one complete wipe cycle. The FCM de-energizes the relay when the state of the park switch sense changes to ground, parking the wiper blades near the base of the windshield.