Grand Cherokee 2WD V8-4.7L VIN J (2004)
Door Switch: Description and Operation
Flip Up Glass Ajar Switch
The liftgate flip-up glass ajar switch is integral to the liftgate flip-up glass latch mechanism. The lift-gate flip-up glass ajar switch is actuated by the
lift-gate flip-up glass latch mechanism, and is hardwired between a body ground, the Body Control Module (BCM) and the rear wiper motor module
through the liftgate and body wire harnesses.
The liftgate flip-up glass ajar switch cannot be adjusted or repaired and, if faulty or damaged, the liftgate flip-up glass latch unit must be replaced.for the
service procedures. For complete circuit diagrams, refer to the appropriate wiring information.
The liftgate flip-up glass ajar switch can close a path to ground for the BCM and the rear wiper motor module when the liftgate flip-up glass is opened,
and opens the ground path when the liftgate flip-up glass is closed. The rear wiper motor module uses the liftgate flip-up glass ajar switch input to
control the rear wiper operation, and will park the rear wiper blade if this input indicates that the lift-gate flip-up glass is ajar. The BCM reads the switch
status then sends the proper switch status message to other modules over the Programmable Communications Interface (PCI) data bus network. The
liftgate flip-up glass ajar switch status message is used by the BCM as an input for Vehicle Theft Security System (VTSS) operation.
