Pinch Sensor: Operation
WARNING: This page is about a different car, the 2005 Dodge Grand Caravan, 2005 Dodge Caravan, and 2005 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
During a power liftgate close cycle, if either of the two conductive rubber strips (tape switch) of the pinch sensor come in contact with an obstacle, the pinch sensor circuit is completed. This tells the power liftgate control module that a obstruction is felt. The control module will stop the liftgate immediately and return it to the full open position.