Power Sliding Rear Window
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
When the power sliding rear window control switch (part of the overhead console) is activated, voltage is supplied to activate either the power sliding rear window open or close relays (integral to the BCMC). When the power sliding rear window open or close relay is activated, voltage is supplied to operate the power sliding rear window motor. Ground is supplied to the power sliding rear window motor through the inactive (normally closed) contacts of the power sliding rear window open or close relay. Window direction is determined by the polarity of the voltage and ground being supplied to the motor.