Front Power Liftgate Control Switch
WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
The front power liftgate control switch (located on the instrument panel) is a momentary contact switch that routes the voltage signal to ground from the LTM when pressed. Pressing this switch either opens, closes or stops the motion of the power liftgate.