Commander 2WD V8-4.7L Flex Fuel (2009)
Trunk / Liftgate Motor: Description and Operation
Power Liftgate Drive Unit Motor - Operation
OPERATION
LIFTGATE IS CLOSED
The power liftgate open command can be initiated by either one press of the power liftgate overhead console switch or two presses of the key fob power
liftgate button. The overhead console switch is hardwired to the power liftgate control module, where as the key fob signal is sent out on the Controller
Area Network (CAN) Data Bus circuit. This signal is detected by the power liftgate control module. The power liftgate control module then interprets
the information to confirm safety requirements are met. The control module will then signal the liftgate mounted latch assembly to release the liftgate
from its primary closed and latched position to the ajar and movable position. Once the liftgate control module detects "liftgate ajar", the control module
will provide 12v power to the liftgate motor. The motor will then rotate the drive unit moving the liftgate into the full open position.
LIFTGATE IS OPEN
The power liftgate close command can be initiated by either one press of the power liftgate overhead console switch or two presses of the key fob power
liftgate button. The overhead console switch is hardwired to the power liftgate control module, where as the key fob signal is sent out on the Controller
Area Network (CAN) Data Bus circuit. This signal is detected by the power liftgate control module. The power liftgate control module then interprets
the information to confirm safety requirements are met. The control module will then provide 12v power to the liftgate motor. The motor will then rotate
the drive unit moving the liftgate into the closed position. Once the liftgate mounted latch reaches the body mounted striker assembly, the power latch
takes over to cinch the liftgate to the fully closed and latched position.
If an obstacle is encountered during a power open or close cycle, the power liftgate control module will automatically reverse direction of the liftgate to
prevent vehicle damage or personal injury.
