Chrysler Pacifica. Manual — part 517
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. Compress the
locking tab until the two connector halves can be
pulled straight apart.
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.
(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 signal is detected by the
Body Control Module (BCM). The Body Control Mod-
ule then sends a PCI data bus message to the power
liftgate control module. The BCM message includes
lock status, which the power liftgate module inter-
prets. If operating conditions are met, the power lift-
gate module then applies power to the 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 within a few sec-
onds, once the latch releases, the latch will automat-
ically cinch closed.
REMOVAL
(1) Open the liftgate.
(2) Disconnect and isolate the negative battery
cable.
(3) Open the liftgate and remove the liftgate trim
panel. Refer to the Body section for the procedure.
(4) Disconnect the handle switch electrical connec-
tor.
(5) Remove the liftgate handle assembly from the
vehicle. Refer to the Body section for the procedure.
(6) Depress the two exterior handle switch retain-
ing tabs and roll the switch out of the handle assem-
bly.
INSTALLATION
(1) Install the handle switch in the handle assem-
bly.
(2) Install the liftgate handle. Refer to the Body
section for the procedure.
(3) Connect the liftgate handle electrical connector.
(4) Install the liftgate trim panel. Refer to the
Body section for the procedure.
(5) Connect the negative battery cable.
(6) Using an appropriate scan tool, check and
erase any power liftgate module diagnostic trouble
codes.
(7) Verify power liftgate system and handle switch
operation. Cycle the power liftgate through one com-
plete open and close cycle, this will allow the power
liftgate module to relearn its cycle with the new com-
ponents.
CS
POWER LIFTGATE SYSTEM
8N - 9
DRIVE UNIT (Continued)
FULL OPEN SWITCH
DESCRIPTION
Vehicles equipped with a power liftgate utilize a
full open switch. The full open switch is comprised of
two main components, the micro-switch and plastic
bracket (Fig. 3). The full open switch and bracket
assembly are located on the drive unit channel and is
used to signal the power liftgate control module
when the liftgate is approaching the full open posi-
tion. Two wires connect the full open switch to the
drive unit’s main electrical connector.
The full open switch cannot be adjusted or repaired
and if found to be faulty, must be replaced. Consult
your Mopar parts catalog for a specific part number.
OPERATION
When the power liftgate is approaching the full
open position, the full open switch’s contact arm
leaves contact with the moving rack assembly. This
releases the switch and closes the circuit supplied to
the power liftgate module. This signals the module
that the liftgate is reaching the full open position.
The full open switch is a normally closed circuit
micro-switch.
DIAGNOSIS AND TESTING - FULL OPEN
SWITCH
The full open switch is a normally closed micro-
switch. To test proper operation of the full open
switch proceed as follows;
(1) Using an ohmmeter, test continuity of the
switch with the liftgate in the full open position.
Continuity should be present. If OK go to Step 2. If
not OK, replace the switch.
(2) Test continuity of the switch while depressing
the full open switch contact arm. Continuity should
not be present. If not OK, replace the switch.
REMOVAL
(1) Open the liftgate.
(2) Disconnect and isolate the negative battery
cable.
(3) Remove the left rear D-pillar trim panel from
the vehicle. Refer to the Body section of this manual
for the procedure.
CAUTION: Locate the two wires coming from the
full open switch. On a piece of paper, note the wire
color and cavity the wires are currently installed in
on both the switch and connector side of the har-
ness. This will prove helpful later.
(4) Cut the two wires leading to the full open
switch and back the wires out of the drive unit’s
main electrical connector. Refer to the Wiring section
of the service manual for instructions.
(5) Using needle nose pliers, depress the full open
switch’s plastic retaining tabs and remove the full
open switch from the drive unit assembly.
INSTALLATION
NOTE: Be certain the wires are reinstalled in the
correct wire cavities. Failure to do so could result
in damage to components. Refer to Wiring Dia-
grams if uncertain.
(1) Perform a wiring repair on the full open switch
wires, or install new terminals on the wire ends and
reinstall in the main drive unit electrical connector.
Be certain to follow the approved procedure in the
Wiring section.
(2) Install the full open switch on the drive unit
assembly.
(3) Connect the negative battery cable.
(4) Using an appropriate scan tool, check and
erase any power liftgate control module diagnostic
trouble codes.
(5) Verify power liftgate system and full open
switch 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.
(6) Install the left rear D-pillar trim panel on the
vehicle. Refer to the Body section for the procedure.
Fig. 3 Power Liftgate Full Open Switch
8N - 10
POWER LIFTGATE SYSTEM
CS
LIFTGATE DRIVE UNIT MOTOR
DESCRIPTION
Vehicles equipped with a power liftgate, utilize a
liftgate motor (Fig. 4). The liftgate motor is a simple
DC motor that can be operated in forward or reverse,
depending on the voltage polarity supplied by the
power liftgate control module. The clutch and motor
portion of the drive unit provides the power and
torque required to open or close the liftgate. Refer to
Drive Unit in this section for a complete description
of the entire drive unit assembly and components.
The power liftgate motor cannot be repaired or
adjusted, and if found to be defective the motor must
be replaced. Refer to the procedure in this section for
detailed instructions.
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. Once the
liftgate control module detects “liftgate ajar”, the con-
trol module will provide 12v power to the liftgate
motor and clutch 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 provide 12v power to the liftgate motor and
clutch to move the liftgate into the closed 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
Power Liftgate System description/operation for addi-
tional information.
DIAGNOSIS AND TESTING - LIFTGATE MOTOR
(1) Open liftgate and remove D-pillar trim to
access the power liftgate motor. Refer to the Body
section for the procedure.
(2) Using a DRB III
t scan tool, actuate the drive
unit motor to check operation. If a DRB III
t scan tool
is not available, disconnect the vehicle battery and
power liftgate module, connect a 12 volt power and
ground source jumper wires to the wires coming from
the DC motor. If the motor rotates in both directions
when the polarity is reversed, the motor is OK at
this time.
REMOVAL
(1) Open the liftgate.
(2) Disconnect and isolate the negative battery
cable.
(3) Remove the left rear D-pillar trim panel from
the vehicle. Refer to the Body section for the proce-
dure.
(4) Remove the power liftgate drive unit assembly
from the vehicle. Refer to the procedure in this sec-
tion.
(5) Disconnect the wire harness connector from the
motor assembly. Gently pry the retaining tabs apart
until the connector comes free from the motor.
(6) Remove the three T25 motor retaining screws
(Fig. 5) and remove the motor from the drive unit.
INSTALLATION
(1) Carefully line-up the motor with the clutch
mounted gear (Fig. 6) and slide the motor assembly
on the clutch. Be certain the gears are properly
meshed.
(2) Install the three T25 motor retaining screws.
Torque the screws to 50 in. lbs.
(3) Connect the wire harness on the motor assem-
bly.
Fig. 4 CS Drive Unit Components
1 - Motor Assembly
2 - Clutch Housing
3 - Full Open Switch
4 - Optical Sensor
5 - Rack/Bracket Assembly
CS
POWER LIFTGATE SYSTEM
8N - 11
(4) Install the power liftgate drive unit assembly
on the vehicle. Refer to the 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) Connect the negative battery cable.
(7) Using an appropriate scan tool, check and
erase any power liftgate control module diagnostic
trouble codes related to the drive unit assembly.
(8) 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.
LINK ROD
DESCRIPTION
Vehicles equipped with a power liftgate utilize a
link rod assembly. This link rod (Fig. 7) is located in
the left rear of the vehicle and is visible without
removing the D-pillar trim. The link rod attaches the
liftgate to the power liftgate drive unit assembly. The
link rod consists of a steel shaft, equipped with two
spherical rod end receptacles at each end. The weight
of the liftgate is not supported by the link rod, the
liftgate prop rods are designed to support the liftgate.
The link rod cannot be adjusted or repaired and if
damaged, must be replaced. Consult your Mopar™
parts catalog for a specific part number.
OPERATION
One end of the link rod assembly is attached to the
liftgate, the other attached to the lift rack of the
drive unit. When the lift rack is driven by the liftgate
motor assembly the liftgate is moved to the open or
closed position.
REMOVAL
(1) Open the liftgate.
(2) Using a small flat-bladed screwdriver, pry the
plastic retainer up to release the locking mechanism
Fig. 5 Removing Power Liftgate Motor Retaining
Screws
Fig. 6 Installing Power Liftgate Motor
Fig. 7 CS Link Rod
1 - Link Rod Retainer
2 - Link Rod Assembly
8N - 12
POWER LIFTGATE SYSTEM
CS
LIFTGATE DRIVE UNIT MOTOR (Continued)
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