Wiper High/Low Relay
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.
The wiper switch is a direct input to the instrument cluster. The instrument cluster sends a PCI bus request to the FCM to actuate the wiper high/low relay. The relay switches power between the low speed and high speed of the wiper motor. The wiper high/low relay is then actuated through the low side control circuit. This circuit is electronically controlled and continuously monitored for malfunctions.