Grand Caravan V6-3.3L VIN R (2005)
Trunk / Liftgate Switch: Description and Operation
Exterior Handle Switch
The exterior handle switch is an electronic release switch mounted to the rear license plate lamp housing assembly, located just above the license plate.
This switch controls the power liftgate release function and is also capable of reversing the power lift-gate when it is in motion. A full power open cycle
cannot be performed using this switch, only one of the power open command switches (key fob and overhead console mounted) can be used to perform a
full power open cycle. The exterior handle switch is a serviceable component.
When the exterior handle switch is depressed, with the liftgate in the closed position, a message is sent to the Body Control Module (BCM). The BCM
then sends a signal to the power liftgate control module via the Programmable Communication Interface (PCI) data bus circuit. The power liftgate
control module then sends a signal to the power latch mounted actuator, which moves the liftgate from the primary closed and latched position to the
open and movable position. If the liftgate is not pulled open once the latch releases within a few seconds, the latch will cinch closed again.
