Switch, Power Liftgate: Operation

The front power liftgate switch is a momentary, push button actuated, resistor multiplexed switch. The switch has a path to ground at all times through an eyelet terminal secured by a screw to the body sheet metal within the passenger compartment. The switch provides a sense output to the PLGM. The PLGM reads the sense which indicates whether the switch push button is depressed or released.

When the switch push button is depressed, it provides an Open  or a Close  request to the PLGM. The PLGM interprets the request based upon the present status of the liftgate. If the monitored status of the liftgate is not closed, the front switch input is interpreted as a Close  request. If the status of the liftgate is not opened, the front switch input is interpreted as an Open  request. If the switch button is depressed a second time, while the PLGM is in the process of opening or closing the liftgate, the PLGM will automatically reverse the liftgate to the full open position.