Description And Operation: Operation

The power liftgate exterior handle switch is a momentary, plunger actuated, resistor multiplexed micro switch. The switch receives voltage from the Body Control Module (BCM) and provides an output to the PLGM. The output to the PLGM indicates whether the switch plunger is depressed or extended. When the switch plunger is extended, it provides an Open  request to the PLGM.

An exterior handle switch input to the PLGM will begin a power Open  cycle of the liftgate if the liftgate is fully closed when it occurs, will cancel a power Open  cycle and put the power liftgate in manual operating mode if the liftgate is already in a power Open  cycle when it occurs, will reverse the liftgate to open if it occurs during a power Close  cycle, or may be used to home the latch.