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CS
DRIVE UNIT (Continued)
The drive unit and components cannot be adjusted
or repaired and if damaged they must be replaced.
Consult your Mopar™ parts catalog for a specific
part number.
OPERATION
LIFTGATE IS CLOSED
Depressing either of the power liftgate open/close
command switches, sends a PCI data bus signal to
the power liftgate control module. The control module
will then signal the door mounted latch assembly to
release the door from its primary closed and latched
position to the ajar and movable position. The lift-
gate motor than takes over to move the liftgate into
the full open position.
LIFTGATE IS OPEN
Depressing either of the power liftgate open/close
command switches, sends a PCI data bus signal to
the power liftgate control module. The control module
will then signal the liftgate motor to move the lift-
gate into the closed position. Once the door mounted
latch reaches the body mounted striker assembly, the
power latch takes over to cinch the door to the fully
closed and latched position.
If a obstacle is encountered during a power open or
close cycle, the power liftgate control module will
automatically reverse direction of the liftgate to pre-
vent vehicle damage or personal injury. Refer to the
owners manual for additional information.
REMOVAL
(1) Open the liftgate.
(2) Disconnect and isolate the negative battery
cable.
(3) Remove the link rod assembly from the liftgate
attachment point. Refer to Link Rod removal proce-
dure in this section.
(4) Remove the left rear D-pillar trim panel from
the vehicle. Refer to the Body section for the proce-
dure.
(5) Disconnect the wire harness connector from the
power liftgate drive unit assembly.
CAUTION: Do not let the drive unit bolt retainers
drop into the body cavity. Rattles and customer
complaints could result.
(6) Remove the power drive unit retaining bolts.
(7) Unhook the drive unit assembly from the D-pil-
lar and remove the unit from the vehicle.
INSTALLATION
(1) Install the drive unit assembly on the D-pillar.
POWER LIFTGATE SYSTEM 8N - 9
(2) Install the power drive unit retaining bolts.
Torque the bolts to 250 in. lbs. (28 N·m).
(3) Connect the wire harness connector on the
power liftgate drive unit assembly.
(4) Install the link rod assembly on the drive unit
attachment point. Refer to the Link Rod installation
procedure in this section.
(5) Install the left rear D-pillar trim panel on the
vehicle. Refer to the Body section for the procedure.
(6) Install the link rod assembly on the liftgate
attachment point. Refer to the Link Rod installation
procedure in this section.
(7) Connect the negative battery cable.
(8) Using an appropriate scan tool, check and
erase any power liftgate control module diagnostic
trouble codes related to the door motor assembly.
(9) Verify power liftgate system operation. Cycle
the power liftgate through one complete open and
close cycle, this will allow the power liftgate control
module to relearn its cycle with the new components.
EXTERIOR HANDLE SWITCH
DESCRIPTION
All Pacifica vehicles are equipped with a exterior
liftgate handle switch. The exterior handle contains
an electronic release switch. The liftgate handle
switch is primarily used for manual opening of the
liftgate. Activation of the handle switch during a
automatic power close cycle will cause the liftgate to
reverse direction. Activation of the handle switch
during an power open cycle will cause the power lift-
gate to disengage, allowing full manual operation.
The exterior handle switch cannot be adjusted or
repaired and if damaged it must be replaced. Consult
your Mopar™ parts catalog for a specific part num-
ber.
OPERATION
When the exterior liftgate handle switch is
depressed a hard-wired message is sent to the Body
Control Module (BCM). The Body Control Module
then sends a PCI data bus message to the power lift-
gate control module. The BCM message includes lock
status and PRNDL position, which the power liftgate
control module interprets. If operating conditions are
met, the power liftgate control module then applies
power to the latch mounted actuator, which moves
the liftgate from the primary closed and latched posi-
tion to the open and movable position.
If the liftgate is not pulled open within a few sec-
onds, once the latch releases, the latch will automat-
ically cinch closed.
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