Chrysler PT Cruiser. Manual — part 511
INSTALLATION
(1) Install switch and two attaching screws to
bezel.
(2) Connect wiring to switch.
(3) Install screws to left cushion side shield.
(4) Connect the battery negative cable.
(5) Verify system operation.
POWER SEAT TRACK
DESCRIPTION
The power seat track incorporates a front and rear
riser (Fig. 3). These risers are not part of the power
seat track and must be removed in order to service
the power seat track assembly. One 12v motor is uti-
lized in the power seat track (Fig. 3). The motor is
connected to a worm-drive gearbox that moves the
seat adjuster up and down. The drivers front seat
can be raised or lowered using the power seat switch,
located on the outboard side of the seat cushion side
shield.
The motor contains a self-resetting circuit breaker
to protect it from overload. Consecutive or frequent
resetting of the circuit breaker may cause damage to
the motor or circuit breaker.
The power seat track cannot be repaired, and is
serviced only as a complete assembly. If any compo-
nent in this unit is inoperative or damaged, the
entire power seat track assembly must be replaced.
OPERATION
One single armature permanent magnet reversible
motor is coupled to a worm gear box assembly. It is
located in between the seat tracks and upper sup-
ports. The one single gear motor assembly attaches
to the seat tracks and provide the various seat move-
ments.
The electrical circuit is protected by a 20 amp cir-
cuit breaker located in the junction block.
When a power seat switch is actuated, a battery
feed and a ground path are applied through the
switch contacts to the appropriate motor. The motor
and drive operate to move the seat in the selected
direction until the power seat switch is released, or
until the travel limit of the power seat track adjuster
is reached. When the power seat 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 motor and drive to run in
the opposite direction.
DIAGNOSIS AND TESTING - POWER SEAT
TRACK
Refer to the appropriate wiring information.
The wiring information includes wiring diagrams,
proper wire and connector repair procedures, further
details on wire harness routing and retention, as well
as pin-out and location views for the various wire
harness connectors, splices and grounds.
Fig. 2 POWER SEAT SWITCH CONTINUITY CHART /
SWITCH PIN-OUT
Fig. 3 PT POWER SEAT TRACK
1 - POWER SEAT TRACK
2 - LOWER SEAT TRACK COVER
3 - REAR SEAT CUSHION RISER
8N - 14
POWER SEAT SYSTEM
PT
POWER SEAT SWITCH (Continued)
Operate the power seat switch to move the seat
motor in each direction. The seat should move in
each of the selected directions. If the power seat
track fails to operate in only one direction, move the
seat a short distance in the opposite direction and
test again to be certain that the adjuster is not at its
travel limit. If the power seat track still fails to oper-
ate in only one direction, begin by testing the power
seat switch, (Refer to 8 - ELECTRICAL/POWER
SEATS/DRIVER SEAT SWITCH - DIAGNOSIS AND
TESTING). If the power seat track fails to operate in
more than one direction, proceed as follows:
(1) Test the circuit breaker in the Junction Block
(JB). If OK, go to Step 2. If not OK, replace the inop-
erative circuit breaker.
(2) Remove the power seat switch from the seat,
(Refer to 8 - ELECTRICAL/POWER SEATS/DRIVER
SEAT SWITCH - REMOVAL). Check for battery volt-
age at the fused B(+) circuit cavity of the power seat
wire harness connector for the power seat switch. If
OK, go to Step 3. If not OK, repair the open fused
B(+) circuit between the power seat switch and the
JB as required.
(3) Check for continuity between the ground cir-
cuit cavity of the power seat wire harness connector
for the power seat switch and a good ground. There
should be continuity. If OK, go to Step 4. If not OK,
repair the open circuit to ground as required.
(4) 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 power seat switch and the inoperative
motor for shorts or opens. If the circuits check OK,
replace the inoperative power seat track. If the cir-
cuits are not OK, repair the power seat wire harness
as required.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the power seat from the vehicle and
set face down on a clean surface. (Refer to 23 -
BODY/SEATS/SEAT - REMOVAL)
(3) Remove the bolts retaining the front riser and
set the front seat riser aside (Fig. 4).
(4) Remove the bolts retaining the rear riser (Fig.
5) and set the seat riser aside.
(5) Remove the lower seat track cover screws and
set it aside.
(6) Remove the seat cushion side shields and set
aside.
(7) Disengage and disconnect the power seat wire
harness from the power seat track.
(8) Remove the power seat track retaining fasten-
ers and remove the power seat track from the seat.
INSTALLATION
(1) Reinstall the power seat track onto the seat
cushion frame. Torque bolts to 21 ft. lbs. (28 N·m).
(2) Secure and connect the power seat wire har-
ness on the power seat track.
Fig. 4 SEAT FRONT RISER REMOVAL/
INSTALLATION
Fig. 5 POWER SEAT TRACK
1 - POWER SEAT TRACK
2 - LOWER SEAT TRACK COVER
3 - REAR SEAT CUSHION RISER
PT
POWER SEAT SYSTEM
8N - 15
POWER SEAT TRACK (Continued)
(3) Install the seat cushion side shields.
(4) Install the lower seat track cover.
(5) Install the bolts retaining the rear riser. Torque
bolts to 21 ft. lbs. (28 N·m).
(6) Install the bolts retaining the front riser.
Torque bolts to 21 ft. lbs. (28 N·m).
(7) Reinstall the power seat assembly into the
vehicle, (Refer to 23 - BODY/SEATS/SEAT - INSTAL-
LATION). Torque bolts to 45 ft. lbs. (61 N·m).
(8) Reconnect the battery negative cable.
LUMBAR
DESCRIPTION
Some vehicles are equipped with a mechanical
lumbar support mechanism (Fig. 6). The only visible
evidence of this option is the separate lumbar control
lever that is located on the inboard seat cushion side
shield. The lumbar adjuster and cable are concealed
beneath the seat back trim cover and padding, where
they are secured to the seat back frame.
OPERATION
The lumbar adjuster lever, located on the inboard
side of each front seat attaches to a cable located
inside the seat back. This cable/lever operates the
lumbar
adjuster
mechanism.
When
the
lumbar
adjuster lever is moved up/down the attached cable is
extended or retracted. The action of this cable com-
presses or relaxes a grid of flexible slats, located in
the seat back. The more this grid is compressed, the
more the slats bow outward against the center of the
seat back padding, providing additional lumbar sup-
port.
REMOVAL
(1) Partially remove the seat back trim cover from
the seat back frame. Refer to the Body section for the
procedure.
(2) Disconnect the lumbar mechanism spring and
disconnect the cable from the lumbar assembly.
(3) Unsnap the lumbar assembly from the seat
back frame and remove from the seat.
INSTALLATION
(1) Snap the lumbar assembly on the seat back
frame. Be careful not to break the retaining pins, if
broken replace with new pieces.
(2) Connect the lumbar cable and connect the
mechanism spring on the lumbar assembly.
(3) Install the seat back trim cover on the seat
back frame. Refer to the Body section for the proce-
dure.
Fig. 6 PT LUMBAR ASSEMBLY
1 - LUMBAR ASSEMBLY
2 - LUMBAR CONTROL CABLE
3 - SPRING
8N - 16
POWER SEAT SYSTEM
PT
POWER SEAT TRACK (Continued)
POWER TOP - CONVERTIBLE - PT27
TABLE OF CONTENTS
page
page
POWER TOP - CONVERTIBLE - PT27
. . . . . . . . . . . . . . . . . . . . . . . . . 17
. . . . . . . . . . . . . . . . . . . . . . . . . . . 17
MOTOR/HYDRAULIC PUMP ASSEMBLY
RELAY - POWER TOP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . . . . . . . . . . 19
SWITCH - POWER TOP
. . . . . . . . . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . . . . . . . . . . . . 19
. . . . . . . . . . . . . . . . 20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
. . . . . . . . . . . . . . . . . . . . . . . . . 22
POWER TOP - CONVERTIBLE -
PT27
DESCRIPTION
The power top system allows the convertible top to
be raised and lowered electrically by actuating a
switch on the instrument panel. The power top sys-
tem receives battery feed through a fuse in the
Power Distribution Center (PDC), only when the
ignition switch is in the ON position.
In each door there is a window regulator module
directly connected to each of the front door window
regulator motors. The window regulator module
receives battery feed through a circuit breaker in the
fuse block, only when the ignition switch is in the
ON position. The modules control window motor
operation and smart glass functions. The driver win-
dow module controls the convertible top operations
by supplying a ground signal to the motor/hydraulic
pump relay.
The main components of the power top system
(Fig. 1) are:
• The power top framework and bows
• The motor/hydraulic pump assembly
• The power top well
• The power top pivot bracket
• The latch system
• The window regulator modules
The power top motor is part of the motor/hydraulic
pump assembly and cannot be serviced separately. If
the motor is inoperative the complete assembly must
be replaced, (Refer to 23 - BODY/CONVERTIBLE
TOP/MOTOR/HYDRAULIC
PUMP
ASSEMBLY-
REMOVAL).
OPERATION
The power top switch is hard wired to both window
regulator modules by the Power Top Switch Mux cir-
cuit. When a top operation input is received by the
driver window regulator module, it will ground the
respective relay control circuit which in turn will
operate the power top motor. If the power top switch
is pressed and held to the down position second
detent, it will command both modules to drop all
windows to the fully down position. The windows
cannot be raised when the power top switch is in the
top down position.
Fig. 1 POWER TOP COMPONENTS
1 - POWER TOP FRAMEWORK
2 - MOTOR/HYDRAULIC PUMP ASSEMBLY
3 - POWER TOP WELL
4 - POWER TOP PIVOT BRACKET
5 - LATCH SYSTEM
PT
POWER TOP - CONVERTIBLE - PT27
8N - 17
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