Circuit/System Description
WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
The rear washer is controlled based on an input from the rear wiper/washer switch. When the wiper portion of the rear wiper/washer switch is closed, a ground signal is provided to the RR WASH PCB relay indicating rear washer operation is requested. With ground provided to the RR WASH PCB relay coil, the relay is energized and B+ is supplied to the washer pump.