Normal Operation
WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Under normal operation, the steering column multifunction switch receives ground through 1302 (WH/LG).(WH/LG). The rear window wiper motor receives input from the steering column multifunction switch through circuit 410 (WH/OG) to operate the rear window wiper wash and wipe function.