ignition CHRYSLER VOYAGER 1996 Service Manual

VEHICLE THEFT SECURITY SYSTEM
CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION......................... 1
DESCRIPTION AND OPERATION
ARMING PROCEDURE.................... 1
TIME-OUT PERIOD....................... 2
TRIGGERING THE VTSS................... 2
DIAGNOSIS AND TESTING
DIAGNOSTIC PROCEDURES................ 2
REMOVAL AND INSTALLATION
BODY CONTROL MODULE................. 2DOOR LOCK CYLINDER SWITCH............ 2
FRONT DOOR AJAR (VTSS TRIGGER)
SWITCH.............................. 2
HOOD AJAR (VTSS TRIGGER) SWITCH...... 3
LIFTGATE AJAR (VTSS TRIGGER) SWITCH.... 3
LIFTGATE LOCK CYLINDER SWITCH......... 3
SLIDING DOOR AJAR (VTSS TRIGGER)
SWITCH.............................. 4
GENERAL INFORMATION
INTRODUCTION
Vehicles equipped with the Vehicle Theft Security
System (VTSS) system, the doors, liftgate, hood and
ignition circuit are monitored by the Body Control
Module (BCM) when the system is armed. The VTSS
will prevent the engine from starting until the BCM
receives a disarm signal. If the VTSS is triggered,
the horn will pulse, headlamps/marker lamps will
flash, and the VTSS warning lamp will flash. If BCM
determines the threat to be false and the VTSS is not
triggered again, the system will shut down and
rearm itself after three minutes. The VTSS monitor-
ing portion of the system is split into two sections.
The engine compartment section and the passenger
compartment section. If a malfunction occurs in the
engine compartment section, the passenger compart-
ment section would still arm and function normally.
If an electrical malfunction occurs in either section of
the system a Diagnostic Trouble Code (DTC) would
be stored the BCM memory to aid system repair.
DTCs can be retrieved using scan tool (DRB)
attached to the diagnostic connector above the accel-
erator pedal.
ENABLING
To initialize the VTSS feature the operator must,
with the engine compartment hood open, cycle the
key in the liftgate key cylinder to the unlock position
giving the BCM a disarm signal. At this time the
visual alarm outputs the headlamps and marker
lamps will function. However the audio alarm output
the horn and engine disable portion of the VTSS will
not function until there has been twenty consecutiveengine run cycles. When this has occurred the total
VTSS will function.
If during alarm being set the BCM receives a
request from the RKE module to enter PANIC mode
the BCM will cancel the alarm, return VTSS armed
state and then perform the RKE PANIC feature.
DESCRIPTION AND OPERATION
ARMING PROCEDURE
METHOD-A
(1) With the key removed from the ignition lock
and any door open, actuate one of the following:
²Power door lock button to LOCK,
²Key fob LOCK button
²Door lock key cylinder to locked position.
(2) Close all opened doors.
(3) After the last door is closed, an arming time-
out period of sixteen seconds will start, then the
VTSS will become armed.
METHOD-B
Actuating the key fob transmitter LOCK button,
key locking the front doors or liftgate with the doors
closed and the ignition locked will begin the arming
time-out period. If method-A, 16 second time-out
sequence was in process when method-B was actu-
ated, the 16 second time-out will restart from the
time of the second actuation.
If the security lamp does not illuminate at all upon
final door closure, it indicates that the system is not
arming.
The current VTSS status armed or disarmed shall
be maintained in memory to prevent battery discon-
nects from disarming the system.
NSVEHICLE THEFT SECURITY SYSTEM 8Q - 1

TIME-OUT PERIOD
The VTSS requires 16 consecutive seconds to time-
out and arm the alarm. If a door is key unlocked, key
fob unlocked. or the ignition is switched ON, the
VTSS will cancel out. To reset the VTSS, perform
methods A or B.
TRIGGERING THE VTSS
After the VTSS is armed, following actions will
trigger the alarm:
²Opening any door.
²Opening the hood
²Turning the ignition to the ON or unlock posi-
tion.
²The ignition switch can be turned to the acces-
sory position without triggering alarm system.
DIAGNOSIS AND TESTING
DIAGNOSTIC PROCEDURES
Refer to Group 8W, Wiring Diagrams for circuit
information and component locations. Using a scan
tool (DRB). Refer to the proper Body Diagnostic Pro-
cedures manual for test procedures.
REMOVAL AND INSTALLATION
BODY CONTROL MODULE
REMOVAL
(1) Disconnect the battery negative cable.
(2) Remove the lower steering column cover and
the knee blocker reinforcement.
(3) Disconnect the two wire connectors from the
bottom of the Body Control Module (BCM) (Fig. 1).
(4) Remove the bolts holding the Junction Block to
the dash panel mounting bracket.
(5) Remove the Junction Block from the mounting
bracket.
(6) Remove the screws holding BCM to Junction
Block.
(7) Slide the BCM downward to disengage guide
studs on Junction Block from the channels on the
BCM mounting bracket.
(8) Remove the BCM from Junction Block.
INSTALLATION
For installation, reverse the above procedure.
DOOR LOCK CYLINDER SWITCH
REMOVAL
(1) Remove the door trim and water shield.
(2) Close the door window.(3) Disconnect the door lock cylinder switch wire
connector from the door harness and wiring clip from
the impact beam.
(4) Remove the outer handle from the door.
(5) Disengage the lock tab holding switch to the
back of the lock cylinder (Fig. 2).
(6) Remove the switch from the door handle.
INSTALLATION
For installation, reverse the above procedure.
FRONT DOOR AJAR (VTSS TRIGGER) SWITCH
REMOVAL
(1) Open the front door.
(2) Remove the screw holding the door ajar switch
to the door B-pillar (Fig. 3).
(3) Remove the door ajar switch from the B-pillar.
Fig. 1 Body Control Module
Fig. 2 Door Lock Cylinder Switch
8Q - 2 VEHICLE THEFT SECURITY SYSTEMNS
DESCRIPTION AND OPERATION (Continued)

VEHICLE THEFT/SECURITY SYSTEMS
CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION........................ 1
SMART KEY IMMOBILIZER SYSTEM....... 1
DESCRIPTION AND OPERATION
SMART KEY IMMOBILIZER MODULE....... 1
SMART KEY IMMOBILIZER SYSTEM
INDICATOR LAMP..................... 3
SMART KEY IMMOBILIZER TRANSPONDER . 2DIAGNOSIS AND TESTING
SMART KEY IMMOBILIZER SYSTEM....... 3
SERVICE PROCEDURES
SMART KEY IMMOBILIZER SYSTEM
TRANSPONDER PROGRAMMING......... 4
REMOVAL AND INSTALLATION
SMART KEY IMMOBILIZER MODULE....... 4
GENERAL INFORMATION
INTRODUCTION
The Smart Key Immobilizer System (SKIS) is
available factory-installed optional equipment for this
model. Following are some general descriptions of the
features and components of the SKIS. Refer to the
vehicle owner's manual for more information on the
use and operation of the SKIS. Refer to 8W-30 - Fuel/
Ignition System in Group 8W - Wiring Diagrams for
complete circuit descriptions and diagrams.
SMART KEY IMMOBILIZER SYSTEM
The Smart Key Immobilizer System (SKIS) is
designed to provide passive protection against unau-
thorized vehicle use by preventing the engine from
operating while the system is armed. The primary
components of this system are the Smart Key Immo-
bilizer Module (SKIM), the Smart Key transponder,
the SKIS indicator lamp, and the Powertrain Control
Module (PCM), for gasoline engines, and the Body
Control Module (BCM) for diesel engines.
The SKIM is installed on the steering column near
the ignition lock cylinder. The transponder is located
under the molded rubber cap on the head of the igni-
tion key. The SKIS indicator lamp is located in the
instrument cluster.
The SKIS includes two valid Smart Key transpon-
ders from the factory. If the customer wishes, addi-
tional non-coded blank Smart Keys are available.
These blank keys can be cut to match a valid ignition
key, but the engine will not start unless the key tran-
sponder is also programmed to the vehicle. The SKIS
will recognize no more than eight valid Smart Key
transponders at any one time.
The SKIS performs a self-test each time the igni-
tion switch is turned to the On position, and will
store Diagnostic Trouble Codes (DTCs) if a systemmalfunction is detected. The SKIS can be diagnosed,
and any stored DTC can be retrieved using a DRB
scan tool as described in the proper Diagnostic Pro-
cedures manual.
DESCRIPTION AND OPERATION
SMART KEY IMMOBILIZER MODULE
The Smart Key Immobilizer Module (SKIM) con-
tains a Radio Frequency (RF) transceiver and a cen-
tral processing unit, which includes the Smart Key
Immobilizer System (SKIS) program logic. The SKIS
programming enables the SKIM to program and
retain in memory the codes of at least two, but no
more than eight electronically coded Smart Key tran-
sponders. The SKIS programming also enables the
SKIM to communicate over the Chrysler Collision
Detection (CCD) data bus network with the Power-
train Control Module (PCM), the instrument cluster
and/or the DRB scan tool.
The SKIM transmits and receives RF signals
through a tuned antenna enclosed within a molded
plastic ring formation that is integral to the SKIM
housing. When the SKIM is properly installed on the
steering column, the antenna ring is oriented around
the circumference of the ignition lock cylinder hous-
ing. This antenna ring must be located within eight
millimeters (0.31 inches) of the Smart Key in order
to ensure proper RF communication between the
SKIM and the Smart Key transponder.
For added system security, each SKIM is pro-
grammed with a unique ªSecret Keyº code and a
security code. The SKIM keeps the ªSecret Keyº code
in memory and sends the code over the CCD data
bus to the PCM, which also keeps this code in its
memory. The SKIM also sends the ªSecret Keyº code
to each of the programmed Smart Key transponders.
The security code is used by the assembly plant to
NS/GSVEHICLE THEFT/SECURITY SYSTEMS 8Q - 1

access the SKIS for initialization, or by the dealer
technician to access the system for service. The
SKIM also stores in its memory the Vehicle Identifi-
cation Number (VIN), which it learns through a CCD
data bus message from the PCM during initializa-
tion.
The SKIM and the PCM both use software that
includes a rolling code algorithm strategy, which
helps to reduce the possibility of unauthorized SKIS
disarming. The rolling code algorithm ensures secu-
rity by preventing an override of the SKIS through
the unauthorized substitution of the SKIM or the
PCM. However, the use of this strategy also means
that replacement of either the SKIM or the PCM
units will require a system initialization procedure to
restore system operation.
When the ignition switch is turned to the On or
Start positions, the SKIM transmits an RF signal to
excite the Smart Key transponder. The SKIM then
listens for a return RF signal from the transponder
of the Smart Key that is inserted in the ignition lock
cylinder. If the SKIM receives an RF signal with
valid ªSecret Keyº and transponder identification
codes, the SKIM sends a ªvalid keyº message to the
PCM over the CCD data bus. If the SKIM receives
an invalid RF signal or no response, it sends ªinvalid
keyº messages to the PCM. The PCM will enable or
disable engine operation based upon the status of the
SKIM messages.
The SKIM also sends messages to the instrument
cluster over the CCD data bus network to control the
SKIS indicator lamp. The SKIM sends messages to
the instrument cluster to turn the lamp on for about
three seconds when the ignition switch is turned to
the On position as a bulb test. After completion of
the bulb test, the SKIM sends bus messages to keep
the lamp off for a duration of about one second. Then
the SKIM sends messages to turn the lamp on or off
based upon the results of the SKIS self-tests. If the
SKIS indicator lamp comes on and stays on after the
bulb test, it indicates that the SKIM has detected a
system malfunction and/or that the SKIS has become
inoperative.
If the SKIM detects an invalid key when the igni-
tion switch is turned to the On position, it sends
messages to the instrument cluster to flash the SKIS
indicator lamp. The SKIM can also send messages to
the instrument cluster to flash the lamp and to gen-
erate a single audible chime tone.
For diagnosis or initialization of the SKIM and the
PCM, a DRB scan tool and the proper Diagnostic
Procedures manual are required. The SKIM cannot
be repaired and, if faulty or damaged, the unit must
be replaced.SMART KEY IMMOBILIZER TRANSPONDER
The Smart Key Immobilizer System (SKIS) uses a
transponder that is integral to each of the two igni-
tion keys that are supplied with the vehicle when it
is shipped from the factory. The transponder chip is
insulated within a nylon mount inserted in the head
of the key, and invisible beneath a molded rubber cap
(Fig. 1).
Each Smart Key transponder has a unique tran-
sponder identification code programmed into it by the
manufacturer. The Smart Key Immobilizer Module
(SKIM) has a unique ªSecret Keyº code programmed
into it by the manufacturer. When a Smart Key tran-
sponder is programmed into the memory of the
SKIM, the SKIM learns the transponder identifica-
tion code from the transponder, and the transponder
learns the ªSecret Keyº code from the SKIM. Each of
these codes is stored within the transponder and in
the nonvolatile memory of the SKIM. Therefore,
blank keys for the SKIS must be programmed by and
into the SKIM, in addition to being cut to match the
mechanical coding of the ignition lock cylinder. See
Smart Key Immobilizer System Transponder Pro-
gramming in this group for more information.
The Smart Key transponder is within the range of
the SKIM transceiver antenna ring when it is
inserted in the ignition lock cylinder. When the igni-
tion switch is turned to the Start or On positions, the
SKIM transceiver issues a Radio Frequency (RF) sig-
nal that excites the transponder chip. The transpon-
der chip responds by issuing an RF signal containing
its transponder identification code and the ªSecret
Keyº code. The SKIM transceiver compares the tran-
sponder codes with the codes stored in its memory to
Fig. 1 Smart Key Immobilizer Transponder
8Q - 2 VEHICLE THEFT/SECURITY SYSTEMSNS/GS
DESCRIPTION AND OPERATION (Continued)

determine whether a valid key is in the ignition lock
cylinder.
The Smart Key transponder cannot be repaired
and, if faulty or damaged, it must be replaced.
SMART KEY IMMOBILIZER SYSTEM INDICATOR
LAMP
The Smart Key Immobilizer System (SKIS) indica-
tor lamp gives an indication when the SKIS is faulty
or when the vehicle has been immobilized due to the
use of an invalid ignition key. The lamp is controlled
by the instrument cluster circuitry based upon mes-
sages received from the Smart Key Immobilizer Mod-
ule (SKIM) on the Chrysler Collision Detection (CCD)
data bus.
The SKIM sends messages to the instrument clus-
ter to turn the lamp on for about three seconds when
the ignition switch is turned to the On position as a
bulb test. After completion of the bulb test, the SKIM
sends bus messages to keep the lamp off for a dura-
tion of about one second. Then the SKIM sends mes-
sages to the instrument cluster circuitry to turn the
lamp on or off based upon the results of the SKIS
self-tests. If the SKIS indicator lamp comes on and
stays on after the bulb test, it indicates that the
SKIM has detected a system malfunction and/or that
the SKIS has become inoperative. If the SKIM
detects an invalid key when the ignition switch is
turned to the On position, it sends messages to the
instrument cluster to flash the SKIS indicator lamp.
The SKIM can also send messages to the instru-
ment cluster to flash the lamp and to generate a sin-
gle audible chime tone. These functions serve as an
indication to the customer that the SKIS has been
placed in its ªCustomer Learnº programming mode.
See Smart Key Immobilizer System Transponder Pro-
gramming in this group for more information on the
ªCustomer Learnº programming mode.
The SKIS indicator lamp uses a replaceable incan-
descent bulb and bulb holder on the instrument clus-
ter electronic circuit board. Refer to Group 8E -
Instrument Panel Systems for diagnosis and service
of a faulty SKIS indicator lamp. If the SKIS indicator
lamp comes on and stays on after the bulb test func-
tion, diagnosis of the SKIS should be performed with
a DRB scan tool and the proper Diagnostic Proce-
dures manual.
DIAGNOSIS AND TESTING
SMART KEY IMMOBILIZER SYSTEM
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
NOTE: The following tests may not prove conclu-
sive in the diagnosis of this system. The most reli-
able, efficient, and accurate means to diagnose the
Smart Key Immobilizer System involves the use of a
DRB scan tool. Refer to the proper Diagnostic Pro-
cedures manual for the procedures.
The Smart Key Immobilizer System (SKIS) and the
Chrysler Collision Detection (CCD) data bus network
should be diagnosed using a DRB scan tool. The DRB
will allow confirmation that the CCD data bus is
functional, that the Smart Key Immobilizer Module
(SKIM) is placing the proper messages on the CCD
data bus, and that the Powertrain Control Module
(PCM) and the instrument cluster are receiving the
CCD data bus messages. Refer to the proper Diag-
nostic Procedures manual for the procedures. Refer
to 8W-30 - Fuel/Ignition System in Group 8W - Wir-
ing Diagrams for complete circuit descriptions and
diagrams.
(1) Check the fuses in the fuseblock module. If OK,
go to Step 2. If not OK, repair the shorted circuit or
component as required and replace the faulty fuse.
(2) Disconnect and isolate the battery negative
cable. Unplug the wire harness connector at the
SKIM. Check for continuity between the ground cir-
cuit cavity of the SKIM wire harness connector and a
good ground. There should be continuity. If OK, go to
Step 3. If not OK, repair the open circuit to ground
as required.
(3) Connect the battery negative cable. Check for
battery voltage at the fused B(+) circuit cavity of the
SKIM wire harness connector. If OK, go to Step 4. If
not OK, repair the open circuit to the fuse in the
fuseblock module as required.
NS/GSVEHICLE THEFT/SECURITY SYSTEMS 8Q - 3
DESCRIPTION AND OPERATION (Continued)

(4) Turn the ignition switch to the On position.
Check for battery voltage at the fused ignition switch
output (run/start) circuit cavity of the SKIM wire
harness connector. If OK, use a DRB scan tool and
the proper Diagnostic Procedures manual to complete
the diagnosis of the SKIS. If not OK, repair the open
circuit to the fuse in the fuseblock module as
required.
SERVICE PROCEDURES
SMART KEY IMMOBILIZER SYSTEM
TRANSPONDER PROGRAMMING
Two programmed Smart Key transponders are
included with the Smart Key Immobilizer System
(SKIS) when it is shipped from the factory. The
Smart Key Immobilizer Module (SKIM) can be pro-
grammed to recognize up to six additional transpon-
ders, for a total of eight Smart Keys. The following
ªCustomer Learnº programming procedure for the
programming of additional transponders requires
access to at least two of the valid Smart Keys. If two
valid Smart Keys are not available, Smart Key pro-
gramming will require the use of a DRB scan tool
and the proper Diagnostic Procedures manual.
PROGRAMMING THE SKIM MODULE WITH
THE DRBIII
(1) Turn the ignition on. Transmission must be in
park or neutral. Alarm set lamp will flash.
(2) Use the DRBIII and select ªSKIMº under the
ªMISCELLANEOUSº menu.
(3) Select ªPROGRAM PINº and enter the cus-
tomer 4±digit PIN number.
(4) Select ªUPDATE VINº. The SKIM module will
learn the VIN from the PCM in gasoline engine vehi-
cles, and from the BCM in diesel engine vehicles.
(5) Select ªCOUNTRY CODEº and enter the cor-
rect country.
(6) Select ªPROGRAM NEW EMSº. The SKIM
module will send the ªsecret keyº data to the PCM.
(7) Program ignition keys to the SKIM module.
PROGRAMMING IGNITION KEYS WITH THE
DRBIII
(1) Turn ignition on. Transmission must be in park
or neutral. Alarm set lamp will flash.
(2) Use the DRBIII and select ªSKIMº under the
ªMISCELLANEOUSº menu.
(3) Select ªLEARN NEW KEYº. Alarm Set lamp
will begin flashing.
NOTE: The PIN must be re-entered each time an
additional key is learned.(4) Insert key into ignition switch. Once the key
has been learned, the Alarm Set lamp will turn off.
REMOVAL AND INSTALLATION
SMART KEY IMMOBILIZER MODULE
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO GROUP 8M - PASSIVE
RESTRAINT SYSTEMS BEFORE ATTEMPTING ANY
STEERING WHEEL, STEERING COLUMN, OR
INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIR-
BAG DEPLOYMENT AND POSSIBLE PERSONAL
INJURY.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the knee blocker from the instrument
panel. See Knee Blocker in Group 8E - Instrument
Panel Systems for the procedures.
(3) Remove the three screws that secure the lower
steering column shroud to the upper shroud.
(4) If the vehicle is so equipped, move the tilt
steering column to the fully lowered position.
(5) If the vehicle is so equipped, loosen the two
nuts that secure the non-tilt steering column upper
mounting bracket to the dash panel steering column
support bracket studs. Lower the column far enough
to remove the upper steering column shroud.
(6) Remove both the upper and lower shrouds from
the steering column.
Fig. 2 Steering Column Shrouds Remove/Install
8Q - 4 VEHICLE THEFT/SECURITY SYSTEMSNS/GS
DIAGNOSIS AND TESTING (Continued)

(7) Unplug the wire harness connector from the
SKIM receptacle.(8) Remove the screw securing the SKIM module
to the steering column.
(9) Release the clip holding the SKIM antenna to
the ignition lock housing on the steering column.
(10) Remove the SKIM from the vehicle.
(11) Reverse the removal procedures to install.
Tighten the non-tilt steering column mounting nuts
to 22 N´m (200 in. lbs.) and the steering column
shroud mounting screws to 2 N´m (18 in. lbs.).
(12) If the SKIM is replaced with a new unit, a
DRB scan tool and the proper Diagnostic Procedures
manual MUST be used to initialize the new SKIM
and to program at least two Smart Key transponders.
Fig. 3 Smart Key Immobilizer Module Remove/Install
NS/GSVEHICLE THEFT/SECURITY SYSTEMS 8Q - 5
REMOVAL AND INSTALLATION (Continued)

If motor grunts and does not move, verify that reg-
ulator is not binding.
WIRING VOLTAGE TEST
The following wiring test determines whether or
not voltage is continuous through the body harness
to switch.
(1) Remove the master power window switch and
bezel assembly from the driver door. Refer to Group
23, Body for proper procedures.
(2) Disconnect wire connector from back of power
window switch.
(3) Switch ignition ON position.
(4) Connect the clip end of a 12 volt test light to
Pin 13 in door harness connector at the window
switch. Touch the test light probe to Pin 9 and then
to Pin 11.
²If the test light illuminates, the wiring circuit
between the battery and switch is OK.
²If light does not illuminate, check the 40 amp
fuse in the Power Distribution Center or for a broken
wire.
²The power window motors are protected with
Positive Temperature Coefficient (PTC) device that
prevents motor burn out. Check Junction Block.
²Refer to Group 8W, Wiring Diagrams for circuit
information and component locations.
REMOVAL AND INSTALLATION
POWER VENT WINDOW MOTOR
REMOVAL
(1) Disconnect battery negative cable.
(2) Remove D-pillar trim panel.
(3) Disconnect wire connector from power vent
motor.
(4) Remove nut holding crank to vent glass.
(5) Remove bolts holding power vent motor to
D-pillar (Fig. 4).
(6) Remove power vent motor.
(7) Pull the crank system from the motor.
INSTALLATION
Before installing crank, cycle replacement motor to
the open position. Install crank hinge in extended
position to the motor and for installation, reverse the
above procedures.
POWER WINDOW SWITCH
To remove power window switches refer to Group
23, Body for proper procedures.
POWER WINDOW MOTOR
WARNING: DO NOT HAVE ANY HANDS OR FIN-
GERS IN SECTOR GEAR AREA WHERE THEY CAN
BE PINCHED BY SMALL MOVEMENTS OF REGULA-
TOR LINKAGE.
REMOVAL
(1) Tape the window in its existing position to
remove its weight from the regulator system.
(2) Cut and remove the tie wrap at the window
motor. Its no longer required.
(3) Disconnect window motor wire connector from
door harness.
(4) Remove screws and nuts holding window motor
to the inner panel.
(5) Remove the motor from the door inner panel,
let it hang from the cables.
(6) With the cables still attached to the failed
motor, Install the replacement motor to the door
inner panel. Tighten down the screws and nuts to 3.4
to 4.5 N´m ( 30 to 40 in. lbs.) of torque.
(7) Separate the failed motor from regulator by:
²Removing the drum cover plate.
²Lift the cable guide off the motor, the drum with
cables, will be lifted off simultaneously (Fig. 5).
CAUTION: Do not allow the drum to separate from
the cable guide, by dropping drum or letting the
cables unwind.
INSTALLATION
(1) Install the cable guide and drum into the
replacement motor.
Fig. 4 Vent Window Motor
NSPOWER WINDOWS 8S - 3
DIAGNOSIS AND TESTING (Continued)

two positions of seat and recliner, and the side view
mirrors as chosen by the driver.
The inputs from these switches to the memory
seat/mirror module is a ground level signal.
(1) Adjust the seat, recliner and side view mirrors
to the desired position.
(2)
Press momentarily and release memory switch S.
(3) Press momentarily and release memory switch
1 or 2. Do NOT press any switches for 10 seconds.
(4) To program the second driver's position, follow
the above sequence.
(5) To recall either of the programmed positions
momentarily press and release either memory selec-
tor switch 1 or 2.
DEFINITION OF: MOMENTARILY AND
RELEASE
The memory seat/mirror module has switch input
timing requirements of a minimum press momen-
tarily time of 250 milliseconds followed by a maxi-
mum hold time of 5 seconds, followed by a maximum
release time between steps of 5 seconds that must be
met for proper operation of the system.
SEAT AND RECLINER SWITCHES
The seat and recliner switch assembly is mounted
outboard on the seat side-shield. Press and hold the
desired seat or recliner switch to effect movement.
The Memory Seat/Mirror Module (MSM Module) 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 as follows:
²Seat Track Rearward
²Seat Front Down
²Seat Rear Down
²Recliner Rearward
²Seat Track Forward
²Seat Front Up
²Seat Rear Up
²Recliner Forward
The inputs from these switches to the MSM Mod-
ule is a current limited battery source fed by the
MSM Module. This protects the MSM Module printed
circuit board traces from acting as fuses. All of these
switch contact inputs to the module are normally
closed to ground, except when actuated.
POSITION SENSING SEAT AND RECLINER
POTENTIOMETERS
A potentiometer is mounted to each seat track and
recliner motor end-bell to provide a sense voltage to
the Memory Seat/Mirror Module that will indicate to
the module where the seat track or recliner is posi-
tioned.
This sense voltage is derived from a 5 volt source
provided by the module to the potentiometer. Thesense voltage is input into the module and stored by
the Memory Seat/Mirror Module.
DIAGNOSIS AND TESTING
MEMORY SELECTOR SWITCHES
To test the memory selector switch:
(1) Remove the memory selector switch. Refer to
removal procedure.
(2) Using an ohmmeter check continuity reading
between switch pins. Refer to (Fig. 1) for proper Pin
numbers.
SIDE VIEW MIRROR SWITCH STUCK
The mirror switches in the instrument panel have
normally open contacts when in their inactive state.
The left/right rocker switch has a center-off detent. If
this switch is actuated to either side, it then becomes
connected to the P73/P70, circuits which are the mir-
ror motor common connections. No faults will result
from this action by itself. If one of the other switch
contacts from the round portion of the switch
becomes accidentally closed,It can cause problems
such as both mirrors operating at the same
time in the vertical or horizontal modes.
²Turn ignition switch ON: If two mirror switch
contacts, from the round portion, are stuck in the
closed position, and the left/right portion is actuated
to either side, a mirror motor will become actuated.
This will drive the motor to its stop, where it will
keep ratcheting until a switch contact is released or
the ignition is turned to OFF. Replace the mirror
switch assembly to correct this condition.
²With the ignition switch in the ON or the OFF
position: If only one mirror switch contact is stuck in
the closed position, the mirror motor will not become
actuated. During an ignition switch recall of a driv-
Fig. 1 Memory Selector Switch Continuity
8R - 4 POWER SEATSNS
DESCRIPTION AND OPERATION (Continued)

CHIME WARNING/REMINDER SYSTEM
CONTENTS
page page
GENERAL INFORMATION
INTRODUCTION......................... 1
DIAGNOSIS AND TESTING
CHIME SYSTEM DIAGNOSIS............... 1
DOME LAMP ON CHIME.................. 2
ENGINE TEMPERATURE CRITICAL CHIME.... 2
EXTERIOR LAMPS ON CHIME.............. 2KEY-IN IGNITION CHIME.................. 2
LOW OIL PRESSURE CHIME OPERATION..... 2
SEAT BELT CHIME....................... 2
SEAT BELT LAMP........................ 2
TURN SIGNAL ON CHIME................. 3
WARNING LAMP ANNOUNCEMENT CHIME . . . 3
GENERAL INFORMATION
INTRODUCTION
WARNING: ON VEHICLES EQUIPPED WITH AN
AIRBAG, REFER TO GROUP 8M, RESTRAINT SYS-
TEMS FOR SAFETY PRECAUTIONS AND WARN-
INGS TO OBSERVE WHEN SERVICING AIRBAG
RELATED COMPONENTS.
The chime system provides the driver with warn-
ing chimes for:
²Seat Belt
²Exterior Lamps ON
²Key-In Ignition
²Engine Temperature Critical
²Turn Signals ON
²Dome Lamp ON
²Low Oil Pressure
²High Speed Warning
²Warning Lamp Announcement
The Chime Warning/Reminder System is diagnosed
using a scan tool (DRB). Refer to the proper Body
Diagnostic Procedures manual for testing procedures
and scan tool usage instructions.
DIAGNOSIS AND TESTING
CHIME SYSTEM DIAGNOSIS
NO TONE WHEN IGNITION SWITCH IS
TURNED ON AND DRIVER'S SEAT BELT IS
NOT BUCKLED.
(1) Using a scan tool (DRB), check for tone in any
other function.
(2) Using a voltmeter, check for voltage:
(a) Pin 9 of the internal 32 way connector of the
BCM for battery feed.(b) Pin 8 of the internal 32 way connector of the
BCM for ignition feed.
(c) If voltage OK, go to step Step 3
(d) If NO voltage repair as necessary. Refer to
Group 8W, Wiring Diagrams for component loca-
tions and circuit information.
(3) Check driver's seat belt buckle switch input for
a closed circuit when not buckled. If input not seen,
look for open in wiring or switch. The switch is
grounded when belt is not buckled.
(4) Repair as necessary.
NO FASTEN SEAT BELT LAMP WHEN
IGNITION SWITCH IS TURNED ON.
(1) Check for burned out lamp.
(2) Using a voltmeter check for voltage:
(a) Pin 2 of the mechanical instrument cluster
for battery feed.
(b) Pin 11 of the mechanical instrument cluster
for ignition voltage.
(3) Repair as necessary.
FASTEN SEAT BELT LAMP OR TONE
CONTINUES FOR MORE THAN 10 SECONDS
AFTER SEAT BELTS ARE FASTENED AND
DRIVER'S DOOR IS CLOSED.
(1) Check left door ajar switch for no ground when
switch is depressed.
(a) If continuity replace door ajar switch.
(b) If NO continuity replace BCM for tone condi-
tion, or replace mechanical instrument panel for
lamp condition.
(c) Replace BCM for tone condition.
(d) Replace mechanical instrument cluster for
lamp condition.
NO TONE WHEN PARK OR HEADLAMPS ARE
ON AND DRIVER'S DOOR IS OPEN.
(1) Check left door ajar switch for good ground
when driver's door is open. Repair as necessary.
NSCHIME WARNING/REMINDER SYSTEM 8U - 1