seats CHRYSLER CARAVAN 2005 User Guide

POWER SEAT SYSTEM
TABLE OF CONTENTS
page page
POWER SEAT SYSTEM
DESCRIPTION
POWER SEAT SYSTEM................31
MEMORY SYSTEM....................32
OPERATION
POWER SEAT SYSTEM................32
MEMORY SYSTEM....................33
DIAGNOSIS AND TESTING
POWER SEAT SYSTEM................33
MEMORY SYSTEM....................33
SEAT SWITCH
DESCRIPTION.........................34
OPERATION...........................34
DIAGNOSIS AND TESTING
DRIVER SEAT SWITCH.................34
REMOVAL.............................36INSTALLATION.........................36
MEMORY SWITCH
DESCRIPTION.........................36
OPERATION...........................36
DIAGNOSIS AND TESTING
MEMORY SWITCH....................37
REMOVAL.............................37
INSTALLATION.........................37
POWER SEAT TRACK
DESCRIPTION.........................37
OPERATION...........................38
DIAGNOSIS AND TESTING
POWER SEAT TRACK..................38
REMOVAL.............................38
INSTALLATION.........................39
POWER SEAT SYSTEM
DESCRIPTION
POWER SEAT SYSTEM
The power seat system option allows the driver
and front seat passenger to electrically adjust their
seating positions for optimum control and comfort.
The driver side power front seat can be adjusted in
eight different directions: up, down, front up, front
down, rear up, rear down, forward, rearward and
recliner forward and rearward. The passenger side
power front seat can be adjusted in four different
directions: forward, rearward and recliner forward
and rearward.
The power seat system receives battery current
through a 40 amp fuse in the Integrated Power Mod-
ule (IPM) and a 30 amp circuit breaker under the
seat so that the power seats remain operational,
regardless of the ignition switch position.
WARNING: SOME VEHICLES ARE EQUIPPED WITH
SEATBACK MOUNTED AIRBAGS (Fig. 1). BEFORE
ATTEMPTING TO DIAGNOSE OR SERVICE ANY
SEAT OR POWER SEAT SYSTEM COMPONENT
YOU MUST FIRST DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE CABLE. THEN WAIT TWO MIN-
UTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE BEFORE FURTHER SYSTEM SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO DO SO COULDRESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
The eight-way driver side power seat is also avail-
able with the heated seat and/or memory seat sys-
tem. The memory seat system automatically
positions the power seat for two different drivers.
Fig. 1 IDENTIFYING A SIDE AIRBAG EQUIPPED
SEAT
1 - AIRBAG LABEL
RSPOWER SEAT SYSTEM8N-31

(Refer to 8 - ELECTRICAL/HEATED SEATS -
DESCRIPTION) for more information on the heated
seat option. (Refer to 8 - ELECTRICAL/POWER
SEATS - DESCRIPTION - MEMORY SEAT SYS-
TEM) for more information on the memory seat sys-
tem.
The power seat system includes the following com-
ponents:
²Power seat recliners
²Power seat switches
²Power seat tracks
²Circuit breaker
The power seat system with memory and heated
seat options includes the following components:
²Power seat recliner
²Power seat switch
²Power seat track.
²Memory Seat Mirror Module (MSMM)
²Memory set switch
²Heated Seat Module (HSM)
²Heated seat switch
²Electronic Vehicle Information Center (EVIC)
MEMORY SYSTEM
The memory system is able to store and recall the
driver side power seat positions (including the power
recliner position), power adjustable pedal positions
and the driver outside mirror position for two driv-
ers. On vehicles equipped with a factory radio, the
memory system is also able to store and recall radio
station presets for two drivers. The memory system
also will store and recall the last station listened to
for each driver, even if it is not one of the preset sta-
tions.
The memory system will automatically return to
its preset settings when the corresponding numbered
button of the memory switch is depressed, or when
the doors are unlocked using the corresponding
Remote Keyless Entry (RKE) transmitter. A customer
programmable feature of the memory system allows
the RKE recall of memory features to be disabled, if
desired. This programmable feature is internal in the
Electronic Vehicle Information Center (EVIC) mod-
ule, which is located in the overhead console.
A Memory Seat Mirror Module (MSMM) is used to
control and integrate the many electronic functions
and features included in the memory seat and mirror
systems.
The memory system includes the following compo-
nents:
²Memory Seat Mirror Module (MSMM)
²Memory set switch
²Position potentiometers on the driver outside
side view mirror
²Position potentiometers on the power adjustable
pedal motor²Position potentiometers on the driver side power
seat track and power seat recliner motors
²Electronic Vehicle Information Center (EVIC)
²Radio receiver (if PCI data bus capable)
Certain functions of the memory system rely upon
resources shared with other electronic modules in the
vehicle over the Programmable Communications
Interface (PCI) data bus network. Initial diagnosis of
these electronic modules or the PCI data bus network
requires the use of a DRBIIItor equivalent scan tool
and the proper Diagnostic Procedures information. If
this method does not prove conclusive, the proper
wiring schematics and the service manual diagnostic
information are required.
The other electronic modules that may affect mem-
ory system operation are:
²Body Control Module (BCM)- (Refer to 8 -
ELECTRICAL/ELECTRONIC CONTROL MOD-
ULES/BODY CONTROL/CENTRAL TIMER MODUL
- DESCRIPTION) for additional information.
²Powertrain Control Module (PCM)- (Refer
to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/POWERTRAIN CONTROL MODULE -
DESCRIPTION) for additional information.
²Transmission Control Module (TCM)- (Refer
to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/TRANSMISSION CONTROL MODULE -
DESCRIPTION) for additional information.
(Refer to 8 - ELECTRICAL/HEATED SEATS -
DESCRIPTION) for additional information on the
heated seat system. (Refer to 8 - ELECTRICAL/
POWER LOCKS - DESCRIPTION) for additional
information on the RKE system.
OPERATION
POWER SEAT SYSTEM
The power seat system receives battery current
through fuse #22 in the Integrated Power Module
(IPM) and a circuit breaker under the front seats,
regardless of the ignition switch position.
When a power seat switch control knob or knobs
are actuated, a battery feed and a ground path are
applied through the switch contacts to the appropri-
ate power seat track adjuster motor. The selected
adjuster motor operates to move the seat track
through its drive unit in the selected direction until
the switch is released, or until the travel limit of the
seat track is reached. When the switch is moved in
the opposite direction, the battery feed and ground
path to the motor are reversed through the switch
contacts. This causes the adjuster motor to run in the
opposite direction.
No power seat switch should be held applied in any
direction after the seat track has reached its travel
limit. The power seat adjuster motor each contain a
8N - 32 POWER SEAT SYSTEMRS
POWER SEAT SYSTEM (Continued)

self-resetting circuit breaker to protect them from
overload. However, consecutive or frequent resetting
of the circuit breaker must not be allowed to con-
tinue, or the motor may be damaged.
MEMORY SYSTEM
The Memory Seat Mirror Module (MSMM) receives
battery current through fuse #22 in the Integrated
Power Module (IPM) and the power seat system cir-
cuit breaker, located under the driver side front seat
near the rear edge of the seat cushion pan. The mem-
ory system does not operate with the Ignition-Off
Draw (IOD) fuse removed. The MSMM will drive a
maximum of 2 motors at a time in a given direction.
If conflicting directions are requested, the priority for
response will be approximately as follows:
²Seat Track Rearward or Forward
²Seat Front Down or Up
²Seat Rear Down or Up
²Recliner Rearward or Forward
The inputs from these switches to the MSMM is a
current limited battery source fed by the MSMM.
This protects the MSMM printed circuit board traces
from acting as fuses. All of these switch contact
inputs to the MSMM are normally closed to ground,
except when actuated.
For diagnosis of the MSMM, the Programmable
Communication Interface (PCI) data bus, or the other
electronic modules on the PCI data bus that provide
inputs and outputs for the memory system, the use of
a DRBIIItor equivalent scan tool and the proper
Diagnostic Procedures information is recommended.
ELECTRONIC VEHICLE INFORMATION CENTER
The Electronic Vehicle Information Center (EVIC)
serves as the user interface for the memory system.
It displays memory system status messages and pro-
vides the user with the means for enabling and dis-
abling the many customer programmable features
available on the vehicle, including those for the mem-
ory system.
(Refer to 8 - ELECTRICAL/OVERHEAD CON-
SOLE/ELECTRONIC VEHICLE INFO CENTER -
DESCRIPTION) for additional information on the
EVIC.
DIAGNOSIS AND TESTING
POWER SEAT SYSTEM
Following are tests that will help to diagnose the
hard wired components and circuits of the power seat
system. However, if the vehicle is also equipped with
the optional memory system, these tests may not
prove conclusive in the diagnosis of the driver side
power seat. In order to obtain conclusive testing ofthe driver side power seat with the memory system
option, the Programmable Communications Interface
(PCI) data bus network and all of the electronic mod-
ules that provide inputs to, or receive outputs from
the memory system components must be checked,
(Refer to 8 - ELECTRICAL/POWER SEATS - DIAG-
NOSIS AND TESTING).
WARNING: SOME VEHICLES ARE EQUIPPED WITH
SEATBACK MOUNTED AIRBAGS. BEFORE
ATTEMPTING TO DIAGNOSE OR SERVICE ANY
SEAT OR POWER SEAT SYSTEM COMPONENT
YOU MUST FIRST DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE CABLE. THEN WAIT TWO MIN-
UTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE BEFORE FURTHER SYSTEM SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO DO SO COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) If either power seat is completely inoperable,
check the power seat circuit breaker, located under
the trailing edge of the driver side power seat. If the
power seat circuit breaker is OK, continue to the
next step.
(2) Check for proper battery and ground connec-
tions at the power seat switch and/or memory seat
module. Repair any wiring as necessary.
(3) Check the power seat system wire harness con-
nections and pins to ensure proper circuit continuity
and ground paths.
MEMORY SYSTEM
In order to obtain conclusive testing of the memory
system, the Programmable Communications Interface
(PCI) data bus network and all of the electronic mod-
ules that provide inputs to, or receive outputs from
the memory system components must be checked.
The most reliable, efficient, and accurate means to
diagnose the driver side power seat with the memory
system option requires the use of a DRBIIItor
equivalent scan tool and the proper Diagnostic Proce-
dures information. The DRBIIItscan tool can pro-
vide confirmation that the PCI data bus is functional,
that all of the electronic modules are sending and
receiving the proper messages on the PCI data bus,
and that the memory system is receiving the proper
hard wired inputs and relaying the proper hard
wired outputs to perform its driver side power seat
functions.
(1) If the driver power seat exhibits an interrupted
or jerky motion, ensure the wire harness is connected
correctly. To verify the concern, obtain a DRB IIItor
equivalent scan tool and energize each axis one at a
time. If any axis stops in approximately 2 seconds
(without hitting the end of travel), the feedback for
RSPOWER SEAT SYSTEM8N-33
POWER SEAT SYSTEM (Continued)

that axis may have an open, short or be incorrectly
connected. Check the wiring to that axis (module to
motor). Repair any wiring problems and retry that
axis. Refer to the appropriate wiring information for
complete circuit schematic or connector pin-out infor-
mation.
SEAT SWITCH
DESCRIPTION
Vehicles equipped with a driver side power seat
utilize an eight-way power seat switch. Vehicles
equipped with a passenger side power seat utilize a
four-way power seat switch. These power seat
switches features two knobs ganged together on the
outboard seat cushion side shield (Fig. 2).
The switch is secured to the back of the seat cush-
ion side shield with two screws. However, the control
knobs for the seat switch unit must be removed
before the seat switch can be removed from the side
shield.The power seat switch cannot be repaired. If one
switch is damaged or faulty, the entire power seat
switch unit must be replaced.
OPERATION
When a power seat switch control knob or knobs
are actuated, a battery feed and a ground path are
applied through the switch contacts to the power seat
track or recliner adjuster motor. The selected
adjuster motor operates to move the seat track or
recliner through its drive unit in the selected direc-
tion until the switch is released, or until the travel
limit of the adjuster is reached. When the switch is
moved in the opposite direction, the battery feed and
ground path to the motor are reversed through the
switch contacts. This causes the adjuster motor to
run in the opposite direction.
No power seat switch should be held applied in any
direction after the adjuster has reached its travel
limit. The power seat adjuster motors each contain a
self-resetting circuit breaker to protect them from
overload. However, consecutive or frequent resetting
of the circuit breaker must not be allowed to con-
tinue, or the motor may be damaged.
DIAGNOSIS AND TESTING
DRIVER SEAT SWITCH
(1) Remove the power seat switch, (Refer to 8 -
ELECTRICAL/POWER SEATS/DRIVER SEAT
SWITCH - REMOVAL).
(2) Using an ohmmeter, check pin #1 of the power
seat switch wire harness connector for continuity to
ground. It should be present. If OK, go to Step 3. If
not OK, repair the open ground circuit as required.
(3) Using a voltmeter, check pin #5 of the power
seat switch wire harness connector for battery cur-
rent. It should be present. If OK, go to Step 4. If not
OK, repair the open voltage supply circuit as
required.
(4) Using an ohmmeter, test the power seat switch
for continuity, refer to SEAT SWITCH CONTINUITY
TEST TABLE (Fig. 3). If continuity is not present as
indicated, replace the power seat switch.
Fig. 2 POWER SEAT SWITCH LOCATION
1 - POWER SEAT SWITCH
2 - SEAT CUSHION SIDE SHIELD
8N - 34 POWER SEAT SYSTEMRS
POWER SEAT SYSTEM (Continued)

REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Using a push pin remover or other suitable
wide flat-bladed tool, gently pry the power seat and
power recliner switch knobs off of the switch levers
(Fig. 4).
(3) Remove the screws that secure the outboard
seat cushion side cover to the seat cushion frame,
(Refer to 23 - BODY/SEATS/SEAT CUSHION SIDE
COVERS - REMOVAL).
(4) Pull the outboard seat cushion side cover away
from the seat cushion frame far enough to access the
power seat switch wire harness connector.
(5) Disconnect the power seat wire harness connec-
tor from the power seat switch connector receptacle.
(6) Remove the screws that secure the power seat
switch to the inside of the outboard seat cushion side
cover.
(7) Remove the power seat switch from the out-
board seat cushion side cover.
INSTALLATION
(1) Position the power seat switch onto the out-
board seat cushion side cover.
(2) Install and tighten the screws that secure the
power seat switch to the inside of the outboard seat
cushion side cover. Tighten the screws to 1.5 N´m (14
in. lbs.).
(3) Reconnect the power seat wire harness connec-
tor to the power seat switch connector receptacle.(4) Install the outboard seat cushion side cover,
(Refer to 23 - BODY/SEATS/SEAT CUSHION SIDE
COVERS - INSTALLATION).
(5) Install the power seat and power recliner
switch knobs onto the switch control levers.
(6) Reconnect the battery negative cable.
MEMORY SWITCH
DESCRIPTION
Vehicles equipped with the memory system have a
memory switch mounted to the driver side front door
trim panel (Fig. 5). This switch is used to set and recall
all of the memory system settings for up to two drivers.
The memory switch is a resistor multiplexed unit that
is hard wired to the Body Control Module (BCM). The
BCM sends out the memory system set and recall
requests to the other electronic modules over the Pro-
grammable Communications Interface (PCI) data bus.
The memory switch cannot be adjusted or repaired
and, if faulty or damaged, it must be replaced.
OPERATION
The memory switch has three momentary switch
buttons labeled Set, 1 and 2. When the memory set
switch is depressed, a resistance value is sent to the
Body Control Module (BCM) via hard wired connec-
tions. When the memory system is in ªsetº mode a
chime will be generated by the BCM.
Fig. 4 REMOVING SWITCH CONTROL KNOBS -
TYPICAL
Fig. 5 MEMORY SWITCH LOCATION
1 - MEMORY SWITCH
2 - SWITCH BEZEL
8N - 36 POWER SEAT SYSTEMRS
SEAT SWITCH (Continued)

DIAGNOSIS AND TESTING
MEMORY SWITCH
(1) Remove the memory switch from the drivers
door panel (Refer to 8 - ELECTRICAL/POWER
SEATS/MEMORY SET SWITCH - REMOVAL).
(2) Using an ohmmeter, check the continuity of the
memory select switch MUX circuit between the C2
wire harness connector for the Body Control Module
(BCM) and the wire harness connector for the mem-
ory switch. There should be continuity. If OK, go to
Step 3. If not OK, repair the open or shorted MUX
circuit as required.
(3) Using an ohmmeter, check the continuity of the
memory select switch return circuit between the C2
wire harness connector for the BCM and the wire
harness connector for the memory switch. There
should be continuity. If OK, go to Step 4. If not OK,
repair the open or shorted return circuit as required.
(4) Using an ohmmeter, test the resistances of the
memory switch, refer to the MEMORY SWITCH
TEST TABLE. If OK, (Refer to 8 - ELECTRICAL/
POWER SEATS - DIAGNOSIS AND TESTING -
MEMORY SYSTEM). If not OK, replace the memory
switch, (Refer to 8 - ELECTRICAL/POWER SEATS/
MEMORY SET SWITCH - REMOVAL).
MEMORY SWITCH TEST TABLE
MEMORY
SWITCH
POSITIONRESISTANCE
BETWEEN
PINSRESISTANCE
RANGE
(OHMS)
NEUTRAL 1&2 24650   5%
(24.65 k)
MEMORY 1 1&2 6850   5%
(6.85 k)
MEMORY 2 1&2 2100   5%
(2.10 k)
SET 1&2 4490   5%
(4.49 k)
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the front door trim panel switch bezel
from the driver side front door. Using a thin flat-
bladed pry tool, gently pry the switch bezel away
from the drivers door trim panel.
(3) Disconnect the memory switch wire harness
connector from the memory switch.
(4) Remove the two screws that secure the memory
switch to the back of the driver side front door trim
panel switch bezel.
(5) Remove the memory switch.
INSTALLATION
(1) Position the memory switch and install and
tighten the two screws that secure the memory
switch to the back of the driver side front door trim
panel switch bezel. Tighten the screws to 2.2 N´m (20
in. lbs.).
(2) Reconnect the memory switch wire harness
connector to the memory switch.
(3) Install the trim panel switch bezel onto the
driver side front door.
(4) Reconnect the battery negative cable.
POWER SEAT TRACK
DESCRIPTION
The power seat option includes an electrically oper-
ated power seat track located under the front seat. If
equipped with Memory System, the front power seat
track on the driver side of the vehicle also provides
the mounting location for the Memory Seat/Mirror
Module (MSMM). The power seat circuit breakers are
mounted on the rear of the power seat track, just
behind the seat rear trim panel. The lower half of the
power seat track is secured to the floor panel via four
studs and nuts that must be accessed from the
underside of the vehicle. Four bolts secure the bot-
tom of the seat cushion pan to the upper half of the
power seat track unit. Four additional bolts secure
the seat back frame to the power seat track unit.
The eight-way power seat track unit includes four
reversible electric motors that are secured to the
upper half of the track unit. Each motor moves the
seat adjuster through a combination of worm-drive
gearboxes and screw-type drive units. Each of the
four power seat track motors used on models
equipped with the optional memory system incorpo-
rate a position potentiometer integral to the motor
assembly, which electronically monitors the motor
position. This enables the memory system to function
by referencing the motor positions programmed into
the memory seat/mirror module.
The front and rear of the seat are operated by two
separate vertical adjustment motors. These motors
can be operated independently of each other, tilting
the entire seat assembly forward or rearward. They
can also be operated in unison by selecting the
proper power seat switch functions, which will raise
or lower the entire seat assembly. A third motor is
the horizontal adjustment motor, which moves the
seat track in the forward and aft directions. The
forth motor is the recliner adjustment motor, which
moves the seat back in the forward and rearward
directions.
The four-way power seat track unit includes two
reversible electric motors that are secured to the
RSPOWER SEAT SYSTEM8N-37
MEMORY SWITCH (Continued)

upper half of the track unit. Each motor moves the
seat adjuster through a combination of worm-drive
gearboxes and screw-type drive units. The horizontal
adjustment motor moves the seat track in the for-
ward and aft directions. The recliner adjustment
motor moves the seat back in the forward and rear-
ward directions.
The power seat track unit cannot be repaired, and
is serviced only as a complete unit. If any component
in this unit is faulty or damaged, the entire power
seat track unit must be replaced.
OPERATION
When the power seat switch control knob or knobs
are actuated, a battery feed and a ground path are
applied through the switch contacts to the power seat
track or recliner adjuster motor. The selected
adjuster motor operates to move the seat track or
recliner through its drive unit in the selected direc-
tion until the switch is released, or until the travel
limit of the adjuster is reached. When the switch is
moved in the opposite direction, the battery feed and
ground path to the motor are reversed through the
switch contacts. This causes the adjuster motor to
run in the opposite direction.
No power seat switch should be held applied in any
direction after the adjuster has reached its travel
limit. The power seat adjuster motors each contain a
self-resetting circuit breaker to protect them from
overload. However, consecutive or frequent resetting
of the circuit breaker must not be allowed to con-
tinue, or the motor may be damaged.
DIAGNOSIS AND TESTING
POWER SEAT TRACK
WARNING: SOME VEHICLES ARE EQUIPPED WITH
SEATBACK MOUNTED AIRBAGS. BEFORE
ATTEMPTING TO DIAGNOSE OR SERVICE ANY
SEAT OR POWER SEAT SYSTEM COMPONENT
YOU MUST FIRST DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE CABLE. THEN WAIT TWO MIN-
UTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE BEFORE FURTHER SYSTEM SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO DO SO COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
Actuate the power seat switch to move the power
seat track adjusters in each direction. The power seat
track adjusters should move in each of the selected
directions. If a power seat track adjuster operates in
one direction only, move the adjuster a short distance
in the opposite direction and test again to be certainthat the adjuster is not at its travel limit. If the
power seat track adjuster still operates in one direc-
tion only, (Refer to 8 - ELECTRICAL/POWER
SEATS/DRIVER SEAT SWITCH - DIAGNOSIS AND
TESTING). If the power seat track adjuster does not
operate in more than one direction, perform the fol-
lowing tests.
TESTING POWER SEAT TRACK MOTORS
(1) Check the power seat circuit breaker under the
seat. If OK, go to Step 2. If not OK, replace the
faulty power seat circuit breaker.
(2) Check for battery voltage at the power seat cir-
cuit breaker under the seat. If OK, go to Step 3. If
not OK, repair the open fused B(+) circuit to the fuse
in the Integrated Power Module (IPM) as required.
(3) Remove the outboard seat cushion side cover,
(Refer to 23 - BODY/SEATS/SEAT CUSHION SIDE
COVERS - REMOVAL). Disconnect the wire harness
connector from the power seat switch. Check for bat-
tery voltage at the fused B(+) circuit cavity of the
power seat switch wire harness connector. If OK, go
to Step 4. If not OK, repair the open fused B(+) cir-
cuit to the power seat circuit breaker under the seat
as required.
(4) Check for continuity between the ground cir-
cuit cavity of the power seat switch wire harness con-
nector and a known good ground. There should be
continuity. If OK, go to Step 5. If not OK, repair the
open ground circuit as required.
(5) Test the power seat switch, (Refer to 8 - ELEC-
TRICAL/POWER SEATS/DRIVER SEAT SWITCH -
DIAGNOSIS AND TESTING). If the switch tests OK,
test the circuits of the power seat wire harness
between the inoperative power seat track adjuster
motor and the power seat switch for shorts or opens.
If the circuits check OK, replace the faulty power
seat track unit. If the circuits are not OK, repair the
power seat wire harness as required.
REMOVAL
WARNING: SOME VEHICLES ARE EQUIPPED WITH
SEATBACK MOUNTED AIRBAGS. BEFORE
ATTEMPTING TO DIAGNOSE OR SERVICE ANY
SEAT OR POWER SEAT SYSTEM COMPONENT
YOU MUST FIRST DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE CABLE. THEN WAIT TWO MIN-
UTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE BEFORE FURTHER SYSTEM SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO DO SO COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) Disconnect and isolate the battery negative
cable.
8N - 38 POWER SEAT SYSTEMRS
POWER SEAT TRACK (Continued)

(2) Remove the appropriate seat from the vehicle
and place it on a clean work surface, (Refer to 23 -
BODY/SEATS/SEAT - REMOVAL).
(3) Remove the Memory Seat/Mirror Module
(MSMM) mounting fasteners (if equipped).
(4) Disconnect the MSMM electrical harness con-
nectors and remove the MSMM from the power seat
track (if equipped).
(5) Remove the front seat track rear cover, (Refer
to 23 - BODY/SEATS/SEAT TRACK REAR COVER -
REMOVAL).
(6) Remove the seat side cover and power seat
switch as an assembly (Refer to 23 - BODY/SEATS/
SEAT CUSHION SIDE COVERS - REMOVAL).
(7) Disconnect all electrical connectors connecting
the power seat track to the seat assembly.
(8) Pull the seat back trim cover up slightly to
access and remove the two seat back frame mounting
bolts and also remove two seat back recliner bolts.
(9) Remove four seat track mounting bolts from
the seat cushion pan.
(10) Remove the power seat track from the seat.INSTALLATION
(1) Position the seat cushion on the seat track.
(2) Install the four seat track retaining bolts in the
seat cushion pan. Torque the bolts to 28.5 N´m (21 ft-
lbs.).
(3) Position the seat back and install the two seat
back frame mounting bolts and the two seat back
recliner bolts. Torque the bolts to 55 N´m (40.5
ft-lbs.).
(4) Route and connect the electrical connectors
between the power seat track and the seat assembly.
(5) Install the seat side cover and power seat
switch as an assembly (Refer to 23 - BODY/SEATS/
SEAT CUSHION SIDE COVERS - INSTALLATION).
(6) Install the front seat track rear cover, (Refer to
23 - BODY/SEATS/SEAT TRACK REAR COVER -
INSTALLATION).
(7) Position the Memory Seat/Mirror Module
(MSMM) and connect the MSMM electrical connec-
tors (if equipped).
(8) Install the MSMM mounting fasteners (if
equipped).
(9) Install the seat assembly in the vehicle (Refer
to 23 - BODY/SEATS/SEAT - INSTALLATION).
(10) Connect the battery negative cable.
RSPOWER SEAT SYSTEM8N-39
POWER SEAT TRACK (Continued)

INSTALLATION
(1) Position the lower drive unit near the lower
hinge.
(2) Connect the flex drive assembly on the lower
drive unit. Push the flex drive collar straight on until
the it snaps in place (Fig. 14).It may be necessary
to rotate the drive unit slightly until the flex
drive seats in place.
(3) Install the lower drive unit retaining fasteners
(Fig. 15). Torque the larger allen headed center stud
to 9 N´m (80 in. lbs.). Torque the smaller screw to 3
N´m (28 in. lbs.).
(4) Install the lower drive unit cover and retaining
screws (Fig. 16).
(5) Connect the battery negative cable.
Fig. 14 LOWER DRIVE UNIT
1 - LOWER DRIVE UNIT
2 - FLEX DRIVE ASSEMBLY
Fig. 15 LOWER DRIVE UNIT RETAINING
FASTENERS
1 - LOWER DRIVE UNIT RETAINING SCREW
2 - DO NOT REMOVE
3 - LOWER DRIVE UNIT RETAINING BOLT
Fig. 16 SLIDING DOOR LOWER HINGE ASSEMBLY
1 - LOWER DRIVE UNIT COVER
2 - LOWER DRIVE UNIT COVER RETAINING SCREWS
3 - SLIDING DOOR
4 - LOWER HINGE ARM BRACKET
8N - 54 POWER SLIDING DOOR SYSTEMRS
LOWER DRIVE UNIT (Continued)

(6) Remove the lower drive unit cover retaining
screws and remove the cover (Fig. 19).
(7) Expand the flex drive collar, next to the lower
drive unit until the flex drive can be pulled straight
off the lower drive unit.
(8) Remove the flex drive assembly from the vehi-
cle.
INSTALLATION
(1) Position the flex drive assembly in the vehicle.
(2) Install the flex drive on the lower drive unit.
Push straight on until it snaps in place. It may be
necessary to rotate drive unit gear slightly until the
flex drive seats in place.
(3) Install the lower drive unit cover and retaining
screws (Fig. 20).
(4) Install the flex drive in the motor assembly.
Line up the square shaped inner shaft and push
straight on (Fig. 21).
(5) Install the E-clip on the flex drive assembly.
(6) Install the weathershield.
(7) Install the sliding door trim panel, (Refer to 23
- BODY/DOORS - SLIDING/TRIM PANEL - INSTAL-
LATION).
(8) Connect the battery negative cable.
Fig. 19 LOWER HINGE/DRIVE ASSEMBLY
1 - LOWER DRIVE UNIT COVER
2 - LOWER DRIVE UNIT COVER RETAINING SCREWS
3 - SLIDING DOOR
4 - LOWER HINGE ARM BRACKET
Fig. 20 LOWER HINGE/DRIVE ASSEMBLY
1 - LOWER DRIVE UNIT COVER
2 - LOWER DRIVE UNIT COVER RETAINING SCREWS
3 - SLIDING DOOR
4 - LOWER HINGE ARM BRACKET
Fig. 21 FLEX DRIVE CABLE
1 - DOOR MOTOR
2 - FLEX DRIVE COLLAR
3 - FLEX DRIVE INNER SHAFT
8N - 56 POWER SLIDING DOOR SYSTEMRS
FLEX DRIVE (Continued)