Rear Window Wiper
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
When the wiper/washer switch is in the INT 1 or INT 2 (continuous wipe) position, the SCCM sends the request to the windshield wiper motor through the LIN. When the request is received, the windshield wiper motor momentarily supplies ground to the rear window wiper motor, activating the motor. The position of the wiper/washer switch determines how many times per minute the windshield wiper motor provides ground to activate the rear window wiper motor.
The rear window wiper motor is self-parking.