2005 CHRYSLER CARAVAN ECU

REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove trim panel from liftgate, (Refer to 23 -
BODY/DECKLID/HATCH/LIFTGATE/TAILGATE/
TRIM PANEL - REMOVAL).
(3) Disconnect the pinch sensor wire harness con-
nector (Fig. 20).
(4) Remove screws holding the pinch sensor to lift-
gate.
(5) Feed the pinch sensor wire harness out of the
liftgate and remove the sensor from the vehicle.
INSTALLATION
WARNING: USE EXTREME CAUTION WHEN TEST-
ING PINCH SENSOR OPERATION.
CAUTION: Ensure liftgate surface is clean and dry
prior to pinch sensor installation. Failure to do so
will inhibit the adhesive backings ability to adhere
to the liftgate and cause improper system operation
or premature component failure.
(1) Position the pinch sensor to the liftgate.
(2) Install the third screw from the top of the sen-
sor first.Do not torque screw at this time.(3) Install the remaining three screws holding the
sensor to the liftgate. Torque all screws to 25 in. lbs.
(4) Install wire harness grommet in liftgate flange
and route, connect the pinch sensor wire harness
connector (Fig. 21).
(5) Remove protective tap from the top of the
pinch sensor. Firmly apply pressure to the sensor
adhesive to secure it to the liftgate.
(6) Install the trim panel on the liftgate, (Refer to
23 - BODY/DECKLID/HATCH/LIFTGATE/TAIL-
GATE/TRIM PANEL - INSTALLATION).
(7) Connect the battery negative cable.
(8) Using an appropriate scan tool, check and
erase any power liftgate control module diagnostic
trouble codes related to the pinch sensor.
(9) Verify power liftgate system and pinch sensor
operation. Cycle the power liftgate through one com-
plete open and close cycle, during the final close cycle
press the pinch sensor to verify the power liftgate
detects an obstruction and returns to the full open
position.
Fig. 20 PINCH SENSOR LOCATION
1 - LIFTGATE
2 - PINCH SENSOR ASSEMBLY
3 - LIFTGATE PROP ROD
4 - PINCH SENSOR WIRE HARNESS CONNECTOR
5 - PINCH SENSOR WIRE HARNESS
Fig. 21 PINCH SENSOR LOCATION
1 - LIFTGATE
2 - PINCH SENSOR ASSEMBLY
3 - LIFTGATE PROP ROD
4 - PINCH SENSOR WIRE HARNESS CONNECTOR
5 - PINCH SENSOR WIRE HARNESS
8N - 18 POWER LIFTGATE SYSTEMRS
PINCH SENSOR (Continued)

TRANSVERSE BRACKET
DESCRIPTION
The transverse bracket (Fig. 22) is used to support
and secure the power liftgate gear/motor assembly to
the left rear body D-pillar. The transverse bracket is
a serviceable power liftgate component.
OPERATION
The power liftgate transverse bracket supports the
gear motor assembly by supplying an additional
attachment point. Located on the leading edge of the
gear motor assembly, one end of the transverse
bracket attaches to the motor assembly the other to
the leading edge of the vehicles D-pillar.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the left D-pillar trim from the vehicle,
(Refer to 23 - BODY/INTERIOR/LEFT D-PILLAR
TRIM PANEL - REMOVAL).
(3) Disconnect the gear motor assembly electrical
connector and disengage retaining pushpin.
(4) Loosen the gear motor assembly retaining bolts
to allow room for transverse bracket to be removed.
(5) Remove the transverse bracket retaining bolts
(Fig. 23).
(6)
Remove the transverse bracket from the vehicle.
INSTALLATION
(1) Position the transverse bracket in the vehicle.
Be certain the transverse bracket is properly posi-
tioned. The bracket should just touch the engage
actuator arm and be positioned between the actuator
arm and the motor housing.
(2) Torque the transverse bracket retaining bolts
to the gear motor assembly to 9.5 N´m (85 in. lbs.).
Do not tighten the transverse bracket retaining bolt,
located under the window actuator at this time.
(3) Torque the gear motor assembly retaining bolts
to 9.5 N´m (85 in. lbs.).
(4) Torque the final transverse bracket retaining
bolt to 9.5 N´m (85 in. lbs.).
(5) Connect the gear motor assembly electrical con-
nector and engage retaining pushpin.
(6) Install the left D-pillar trim, (Refer to 23 -
BODY/INTERIOR/LEFT D-PILLAR TRIM PANEL -
INSTALLATION).
(7) Connect the battery negative cable.
(8) Using an appropriate scan tool, check any
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.
Fig. 22 LIFTGATE GEAR/MOTOR ASSEMBLY
1 - TRANSVERSE BRACKET
2 - ENGAGE ACTUATOR
3 - LIFT GEAR AND ROD ASSEMBLY
4 - LIFTGATE MOTOR
Fig. 23 LIFTGATE GEAR MOTOR ASSEMBLY
1 - TRANSVERSE BRACKET
2 - ENGAGE ACTUATOR
3 - LIFT GEAR AND ROD ASSEMBLY
4 - LIFTGATE MOTOR
RSPOWER LIFTGATE SYSTEM8N-19

a second time. Pressing the Panic button also acti-
vates the courtesy lamps. Pressing the Panic button
again stops the exterior lamps from flashing and the
horn from sounding. However, the courtesy lamps
will remain illuminated until either the BCM times
out lamp operation or until the turning of the igni-
tion. The panic feature will operate if the ignition is
ON, but only if the Panic button is pressed prior to
starting the vehicle. A vehicle speed of about 25.7
km/h (15 miles-per-hour) will also cancel the panic
event.
The RKE system can also perform other functions
on this vehicle. If the vehicle is equipped with the
optional Vehicle Theft Security System (VTSS), the
RKE transmitter will arm the VTSS when the Lock
button is depressed, and disarm the VTSS when the
Unlock button is depressed.
The RKE system includes two transmitters when
the vehicle is shipped from the factory, but the sys-
tem can retain the vehicle access codes of up to a
total of eight transmitters. If an RKE transmitter is
inoperative or lost, new transmitter vehicle access
codes can be programmed into the system using a
DRB IIItscan tool.
This vehicle also offers several customer program-
mable features, which allows the selection of several
optional electronic features to suit individual prefer-
ences. Customer programmable feature options
affecting the RKE system include:
²Automatic Door Lock- Customer programma-
ble feature that allows the BCM to perform an auto-
matic door lock if the vehicle speed is above 25.7
km/h (15 miles-per-hour).
²Automatic Door Unlock On Exit- Customer
programmable feature that allows the BCM to per-
form an automatic door unlock if the vehicle speed is
0, vehicle in park and driver door is opened.
²Flash Lights with Lock and Unlock- Allows
the option of having the park lamps flash as an opti-
cal verification that the RKE system received a valid
Lock request or Unlock request from the RKE trans-
mitter, or having no optical verification.
²Programming Additional Transmitters-
Allows up to a total of four transmitter vehicle access
codes to be stored.
²Remote Unlock Sequence- Allows the option
of having only the driver side front door unlock when
the RKE transmitter Unlock button is depressed the
first time. The remaining doors unlock when the but-
ton is depressed a second time within 5 seconds of
the first unlock press. Another option is having all
doors unlock upon the first depression of the RKE
transmitter Unlock button.
²Sound Horn on Lock- Allows the option of
having the horn sound a short chirp as an audible
verification that the RKE system received a validLock request from the RKE transmitter, or having no
audible verification.
OPERATION
POWER LOCKS
The Body Control Module (BCM) locks or unlocks
the doors when an actuation input signal from a door
lock switch, Central Lock key cylinder or Remote
Keyless Entry (RKE) is received. The BCM turns on
the output drivers and provides a voltage level to the
door lock motor for a specified time.
REMOTE KEYLESS ENTRY
The RKE transmitter uses radio frequency signals
to communicate with the SKREEM module. The
SKREEM is on the PCI bus. When the operator
presses a button on the transmitter, it sends a spe-
cific request to the SKREEM. In turn, the SKREEM
sends the appropriate request over the PCI bus to
the following:
²Integrated Power Module (IPM)- to activate
the park lamps, the headlamps and the horn for the
horn chirp.
²Power Liftgate Module (PLGM)- to control
the liftgate lock and unlock functions.
After pressing the lock button on the RKE trans-
mitter, all of the door locks will lock, the illuminated
entry will turn off (if all doors are closed) and the
vehicle theft security system (if equipped) will arm.
Pressing the unlock button one time will unlock
the driver door, or all doors based on the customer
programmable feature enabled, the illuminated entry
will turn on the courtesy lamps and the vehicle theft
security system (if equipped) will disarm. Pressing
the unlock button a second time, the remaining door
locks will unlock.
If the vehicle is equipped with the memory system,
the memory message will identify which transmitter
(1 or 2) sent the signal.
ROLLING CODE
The rolling code feature changes part of the trans-
mitter message each time that it is used. The trans-
mitter message and the receiver message increment
together. Under certain conditions with a rolling code
system, such as pressing a button on the RKE trans-
mitter over 255 times outside of receiver range or
replacing the battery, the receiver and transmitter
can fall out of synchronization. To re-synchronize,
press and release the UNLOCK button on the RKE
transmitter repeatedly (it may take up to eight
cycles) while listening carefully for the power door
locks in the vehicle to cycle, indicating that resyn-
chronization has occurred.
RSPOWER LOCKS8N-21
POWER LOCKS (Continued)

The lock function works from the RKE transmitter
even in an out of synchronization condition, therefore
it could be verified by pressing the LOCK button on
the RKE key fob.
DOOR CYLINDER LOCK
SWITCH - EXPORT
DESCRIPTION
The Door Cylinder Lock Switch (If equipped) is
used to:
²Unlock/Lock all the doors via the Central Lock-
ing feature.
²Arm/Disarm the Vehicle Theft Security System.
²Trigger the Illuminated Entry feature.
The door cylinder lock switch is mounted to the
rear of the driver door lock cylinder. When installed
on the rear of the cylinder, there is a tab on the lock
cylinder that aligns with the switch to prevent it
from turning. An anti-rotating device. The door cylin-
der lock switch is a one time use switch. Once it is
removed from the rear of the door lock cylinder, it
may not be reinstalled and a new switch must be
used.
OPERATION
When the Door Cylinder Lock Switch is turned
either way using the door key cylinder, the BCM
reads a direct message signal from the switch.
If turning the key cylinder once, toward the front
of the vehicle, this will:
(1) Mechanically unlock the door lock.
(2) Disarm the Vehicle Theft Security System (if
equipped).
(3) Turn on the Illuminated Entry (if equipped) for
approximately 30 seconds.
If the key cylinder is turned to the unlock position
(toward the front of vehicle) twice within two sec-
onds, all the doors and liftgate will unlock (if
equipped with the central locking feature).
To lock the vehicle using the door cylinder lock
switch, turn the key cylinder toward the rear of the
vehicle once. This will lock the door that you are
using the key on. If equipped with the central locking
feature, this will lock all the other doors and liftgate.
Furthermore, this will arm the vehicle theft security
system and turn off the illuminated entry.
DIAGNOSIS AND TESTING
DOOR CYLINDER LOCK SWITCH - EXPORT
Any diagnosis of the power lock system
should begin with the use of the DRB IIItdiag-
nostic tool. For information on the use of theDRB IIIt, refer to the appropriate Diagnostic
Service Manual.
For complete circuit diagrams, refer to the appro-
priate wiring information.
(1) Visually inspect the switch for proper installa-
tion. Make sure it is seated on the rear of the key
cylinder, with the tab of the door key cylinder prop-
erly aligned with the slot on the door cylinder lock
switch.
(2) Disconnect the switch at the harness connector
and check the resistance in each switch position.
CAUTION: Do not disconnect the switch from the
rear of the door key cylinder. This switch is a one
time use switch. Once it is removed from the rear of
the switch, it is not reusable and must be replaced.
Test the switch at the harness connector.
DOOR CYLINDER LOCK SWITCH RESISTANCE
SWITCH POSITION RESISTANCE VALUE
COUNTERCLOCKWISE 5.4K OHMS
NEUTRAL 18.4K OHMS
CLOCKWISE 2K OHMS
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the door trim panel of the effected door
cylinder lock switch (Refer to 23 - BODY/DOOR -
FRONT/TRIM PANEL - REMOVAL).
(3) Close the door window.
(4) Disconnect the door cylinder lock switch wire
connector from the door harness, and wiring clip
from the impact beam.
(5) Remove the outer door handle from the door.
(6) Remove the switch from the key cylinder in the
door handle and remove from vehicle.
INSTALLATION
(1) Install the switch on the key cylinder in the
door handle.
(2) Install the door handle.
(3) Connect the door cylinder lock switch wire con-
nector to the door harness, and the wiring clip to the
impact beam.
(4) Install the door trim panel of the affected door
cylinder lock switch (Refer to 23 - BODY/DOOR -
FRONT/TRIM PANEL - INSTALLATION).
(5) Connect the battery negative cable.
(6) Verify system operation.
8N - 22 POWER LOCKSRS
POWER LOCKS (Continued)

KEYLESS ENTRY
TRANSMITTER
DIAGNOSIS AND TESTING
KEYLESS ENTRY TRANSMITTER
Using special tool 9001, first test to ensure that
the transmitter is functioning. Typical testing dis-
tance is 2.5 centimeters (1 inch) for Asian transmit-
ters and 30.5 centimeters (12 inches) for all others.
To test, position the transmitter as shown (Fig. 2).
Press any transmitter button, then test each button
individually. The tool will beep if a radio signal
strength that lights five or more LED's is detected.
Repeat this test three times. If transmitter fails any
of the test, refer to the Diagnostic Procedures man-
ual.
STANDARD PROCEDURE
STANDARD PROCEDURE - HORN CHIRP
PREFERENCE
DISABLING
The horn chirp can be toggled using a DRB IIItor
by using a programmed Remote Keyless Entry (RKE)
transmitter.
To DISABLE (cancelling) the horn chirp feature,
press and hold the transmitter LOCK button for a
minimum of five seconds. While pressing the LOCK
button in, press the PANIC button. The horn chirp
feature will not function until the above procedure is
repeated.
ENABLING
The horn chirp can be toggled using a DRB IIItor
by using the Remote Keyless Entry (RKE) transmit-
ter.
To ENABLE (reinstate) the horn chirp feature, use
any one of the four programmed integrated key/key
fob transmitters and reverse the above procedures. It
will ENABLE the horn chirp feature for all transmit-
ters.
STANDARD PROCEDURE - BATTERY
REPLACEMENT
(1) With the transmitter buttons facing down, use
a coin to pry the two halves of the transmitter apart.
Make sure not to damage the rubber gasket during
separation of the housing halves.
(2) Remove the battery from the transmitter back
housing holder.
(3) Replace the batteries. Avoid touching the new
batteries with your fingers, Skin oils may cause bat-
tery deterioration. If you touch a battery, clean it off
with rubbing alcohol.
(4) To assemble the transmitter case, snap the two
halves together.
STANDARD PROCEDURE - REMOTE KEYLESS
ENTRY TRANSMITTER PROGRAMMING
(Refer to 8 - ELECTRICAL/VEHICLE THEFT
SECURITY/TRANSPONDER KEY - STANDARD
PROCEDURE) for programming procedures.
SPECIFICATIONS
SPECIFICATIONS - TRANSMITTER RANGE
Normal operation range is up to a distance of 7
meters (23 ft.) of the vehicle. Range may be better or
worse depending on the environment around the
vehicle.
SPECIFICATIONS - BATTERY
The batteries can be removed without special tools
and are readily available at local retail stores. The
recommended battery is Duracell DL 2016 or equiva-
lent, TWO cells are required. Battery life is about
three years minimum.
CAUTION: Do not touch the battery terminals or
handle the batteries any more than necessary.
Hands must be clean and dry.
Fig. 2 TRANSMITTER DIAGNOSIS - TYPICAL
8N - 24 POWER LOCKSRS

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)