battery CHRYSLER VOYAGER 2002 Service Manual

PASSENGER WINDOW SWITCH TEST
SWITCH POSITION CONTINUITY BETWEEN
OFF 3 AND 8
OFF 2 AND 5
UP 1 AND 8
DOWN 1 AND 5
(5) If the results are not OK, replace the switch.
The power window master switch has a Auto-Down
feature. The switch is equipped with two detent posi-
tions when actuating the power window OPEN. The
first detent position allows the window to roll down
and stop when the switch is released. The second
detent position actuates an integral express roll
down relay that rolls the window down after the
switch is released. When the express down circuit
senses stall current (window has reached end of
down travel), the switch will turn current off to the
motor. The AUTO feature can be cancelled by actuat-
ing the switch UP or DOWN while window is in
motion. If the electronic circuit in the switch fails to
detect a stall current, the auto down circuit will time
out within 9 to 13 seconds.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Using a trim stick, start at the bottom of the
switch and bezel assembly and pry up to remove the
switch and bezel assembly from the door trim panel
(Fig. 4).(3) Unlatch the locking tab on the harness side
connector of the switch.
(4) Disconnect wire harness connectors from
switch.
INSTALLATION
(1) Reconnect wire harness connector to switch.
(2) Insert switch into door trim panel and press
into place.
(3) Reconnect battery negative cable.
Fig. 4 POWER WINDOW SWITCH
1 - DOOR TRIM PANEL
2 - POWER WINDOW SWITCH AND BEZEL ASSEMBLY
RSPOWER WINDOWS8N-67
WINDOW SWITCH (Continued)
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RESTRAINTS
DESCRIPTION
This vehicle is equipped with a Frontal Impact Air-
bag System, which utilizes the driver/passenger air-
bags and seatbelt pretensioners. This system is
designed to protect occupants in the event of a front
impact collision. These airbags and seatbelt preten-
sioners are all serviceable parts. If these pyrotechnics
are deployed or defective, they must be replaced, as
well as the Occupant Restraint Controller (ORC)
must be diagnosed following procedures outlined in
the service/diagnostic manuals.
Vehicles equipped with the Side Impact Airbag
System, the seat back assembly must be replaced, as
well as the Side Impact Airbag Control Module
(SIACM) must be diagnosed following procedures
outlined in the service/diagnostic manuals.
OPERATION
The Occupant Restraint Controller (ORC) controls
the driver/passenger airbags and seatbelt pretension-
ers. If the ORC determines the impact is severe
enough, the driver/passenger airbags and seatbelt
pretensioners will inflate. Once a deployment occurs,
these devices, and all damaged parts must be
replaced, as well as the ORC must be diagnosed fol-
lowing procedures outlined in the service/diagnostic
manuals.
The Side Impact Airbag Control Module (SIACM),
the seat back assemblies and all damaged parts must
be replaced, as well as the SIACM must be diagnosed
following procedures outlined in the service/diagnos-
tic manuals.
WARNING
WARNING: THIS SYSTEM IS A SENSITIVE, COM-
PLEX ELECTRO±MECHANICAL UNIT. DISCONNECT
AND ISOLATE THE BATTERY NEGATIVE CABLE
BEFORE BEGINNING AIRBAG SYSTEM COMPO-
NENT REMOVAL OR INSTALLATION PROCEDURES.
THIS WILL DISABLE THE AIRBAG SYSTEM. FAIL-
URE TO DISCONNECT THE BATTERY COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
ALLOW SYSTEM CAPACITOR TO DISCHARGE FOR
TWO MINUTES BEFORE REMOVING AIRBAG COM-
PONENTS.
DO NOT PLACE AN INTACT UNDEPLOYED AIRBAG
FACE DOWN ON A SOLID SURFACE, THE AIRBAG
WILL PROPEL INTO THE AIR IF ACCIDENTALLY
DEPLOYED AND COULD RESULT IN PERSONAL
INJURY. WHEN CARRYING OR HANDLING AN
UNDEPLOYED AIRBAG MODULE, THE TRIM SIDE
OF THE AIRBAG SHOULD BE POINTING AWAYFROM THE BODY TO MINIMIZE POSSIBILITY OF
INJURY IF ACCIDENTAL DEPLOYMENT OCCURS.
REPLACE AIRBAG SYSTEM COMPONENTS WITH
MOPARTREPLACEMENT PARTS. SUBSTITUTE
PARTS MAY APPEAR INTERCHANGEABLE, BUT
INTERNAL DIFFERENCES MAY RESULT IN INFE-
RIOR OCCUPANT PROTECTION.
WEAR SAFETY GLASSES, RUBBER GLOVES, AND
LONG SLEEVED CLOTHING WHEN CLEANING
POWDER RESIDUE FROM VEHICLE AFTER AIRBAG
DEPLOYMENT. SODIUM HYDROXIDE POWDER
RESIDUE EMITTED FROM A DEPLOYED AIRBAG
CAN CAUSE SKIN IRRITATION. FLUSH AFFECTED
AREA WITH COOL WATER IF IRRITATION IS EXPE-
RIENCED. IF NASAL OR THROAT IRRITATION IS
EXPERIENCED, EXIT THE VEHICLE FOR FRESH AIR
UNTIL THE IRRITATION CEASES. IF IRRITATION
CONTINUES, SEE A PHYSICIAN.
DO NOT USE A REPLACEMENT AIRBAG THAT IS
NOT IN THE ORIGINAL PACKAGING, IMPROPER
DEPLOYMENT AND PERSONAL INJURY CAN
RESULT.
THE FACTORY INSTALLED FASTENERS, SCREWS
AND BOLTS USED TO FASTEN AIRBAG COMPO-
NENTS HAVE A SPECIAL COATING AND ARE SPE-
CIFICALLY DESIGNED FOR THE AIRBAG SYSTEM.
DO NOT USE SUBSTITUTE FASTENERS, USE ONLY
ORIGINAL EQUIPMENT FASTENERS LISTED IN THE
PARTS CATALOG WHEN FASTENER REPLACE-
MENT IS REQUIRED.
CAUTION:
Deployed and Nondeployed Air Bags may or may
not have live pyrotechnic material within the air bag
inflator. Do not dispose of Driver and Passenger
Airbags unless you are sure of complete deploy-
ment. Please refer to the Hazardous Substance
Control System for Proper Disposal. Dispose of
deployed air bags in a manner consistent with
state, provincial, local, and federal regulations.
DIAGNOSIS AND TESTING - AIRBAG SYSTEM
(1) Connect a DRB llltscan tool to the Data Link
Connector (DLC), located at left side of the steering
column and at the lower edge of the lower instru-
ment panel.
(2) Turn the ignition key to ON position. Exit vehi-
cle with scan tool. Use the latest version of the
proper cartridge.
(3) After checking that no one is inside the vehicle,
connect the battery negative terminal.
(4) Using the DRB llltscan tool, read and record
active diagnostic code data.
(5) Read and record any stored diagnostic codes.
8O - 2 RESTRAINTSRS
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(6) Refer to the proper Body Diagnostic Procedures
manual if any diagnostic codes are found in Step 4 or
Step 5.
(7) Erase stored diagnostic codes if there are no
active diagnostic codes. If problems remain, diagnos-
tic codes will not erase. Refer to the Proper Body
Diagnostic Procedures Manual to diagnose the prob-
lem.If airbag warning lamp either fails to light,
or goes on and stays on, there is a system mal-
function. Refer to the proper Body Diagnostic
Procedures manual to diagnose the problem.
CLOCK SPRING
DESCRIPTION
The clock spring is screwed to a plastic mounting
platform on the steering column behind the steering
wheel. The clock spring is used to maintain a contin-
uous electrical circuit between the wiring harness
and the drivers airbag.
OPERATION
This assembly consists of a flat ribbon like electri-
cally conductive tape which winds and unwinds with
the steering wheel rotation. The clock spring cannot
be repaired. If the clock spring is faulty, damaged, or
if the airbag has been deployed, the clock spring
must be replaced.
STANDARD PROCEDURE - CLOCK SPRING
CENTERING
If the rotating tape (wire coil) in the clock spring is
not positioned properly with the steering wheel and
the front wheels, the clock spring may fail. The fol-
lowing procedure MUST BE USED to center the
clock spring if it is not known to be properly posi-
tioned, or if the front wheels were moved from the
straight ahead position.
(1) Adjust the steering wheel so that the tires are
in a straight ahead position.
(2) Remove Driver Airbag from steering wheel.
(3) Disconnect wire connectors from back of airbag.
(4) Remove steering wheel.
(5) Rotate the clock spring rotor clockwise until
the rotor stops. Do not apply excessive force.
(6) From the end of travel, rotate the rotor two
turns counterclockwise until the wires end up at the
top.
(7) Install steering wheel and airbag.
WARNING: DO NOT CONNECT THE BATTERY NEG-
ATIVE CABLE. REFER TO ELECTRICAL,
RESTRAINTS, DIAGNOSIS AND TESTING - AIRBAG
SYSTEM FIRST.
REMOVAL
(1) Position steering wheel and front wheels
straight ahead.
(2) Release hood latch and open hood. Disconnect
and isolate the battery negative cable.
(3) Remove driver airbag from steering wheel.
(4) Disconnect wire connectors from back of driver
airbag.
(5) Disconnect the 2±way connector from remote
radio control harness and the 4-way connector from
the speed control/horn harness.
(6) Remove steering wheel.
(7) Remove steering column shrouds.
(8) Disconnect 4-way and 6-way connectors
between the clock spring and the instrument panel
wiring harness.
(9) Remove clock spring from housing assembly by
removing the two retaining screws retaining the
clock spring.
INSTALLATION
(1) Position the clock spring into the housing.
Install the two retaining screws to clock spring.
(2) Connect the 4-way and 6-way harness between
the clock spring and the instrument panel.
(3) Install the steering wheel. Refer to Steering,
Column, Steering Wheel, Installation.
(4) Connect the harness connector to the driver
airbag.
(5) Connect the remote radio control harness and
the speed control/horn harness.
(6) Install the driver airbag into the steering
wheel.
(7) Install the steering column upper and lower
shrouds.
WARNING: DO NOT CONNECT THE BATTERY NEG-
ATIVE CABLE. REFER TO ELECTRICAL,
RESTRAINTS, DIAGNOSIS AND TESTING - AIRBAG
SYSTEM FIRST.
DRIVER AIRBAG
DESCRIPTION
The Driver Airbag is located in the center of the
steering wheel. The most visible part of the airbag is
the cover/horn switch.
OPERATION
The Driver Airbag cover contains the horn switch,
inflator device, and a fabric bag. The airbag cover/
horn switch is serviced separately from the inflator
and bag components.
RSRESTRAINTS8O-3
RESTRAINTS (Continued)
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When the front airbag system is deployed, the fol-
lowingMUSTbe replaced:
²Complete Steering Column Assembly.
²Lower Steering Column Coupler.
²Steering Wheel.
²Clock Spring.
²Driver Airbag
²Passenger Airbag
²Upper Instrument Panel with Pad.
CARE OF UNDEPLOYED AIRBAGS
Airbags must be stored in their original special
container until used for service. At no time should a
source of electricity be permitted near the inflator on
the back of an airbag. When carrying or handling an
undeployed airbag, the trim side of the airbag should
be pointing away from the body to minimize possibil-
ity of injury if accidental deployment occurs. Do not
place undeployed airbag face down on a solid surface,
the airbag will propel into the air if accidental
deployment occurs.
STANDARD PROCEDURE - CLEAN UP
Roll or fold the driver airbag towards the steering
wheel and then tape the bag to the steering wheel.
Use a vacuum cleaner to remove any residual pow-
der from the vehicle interior. Work from the outside
in to avoid kneeling or sitting in a contaminated
area. Vacuum the heater and A/C outlets as well. If
HVAC was in RECIRC mode at time of airbag
deployment, operate HVAC blower on low speed/heat
and vacuum powder residue expelled from the heat
outlets. Multiple vacuum cleaning may be necessary
to decontaminate the interior of the vehicle.
REMOVAL
DEPLOYED AIRBAG
The Driver Airbag and Driver Airbag Cover/Horn
Pad are serviced separately from each other.
(1) Clean powder residue from interior of vehicle,
(Refer to 8 - ELECTRICAL/RESTRAINTS/DRIVER
AIRBAG - STANDARD PROCEDURE ) Cleanup.
(2) Remove two screws attaching Driver Airbag to
steering wheel.
(3) Remove the driver airbag from steering wheel.
(4) Disconnect wire connectors from Airbag and
Clock Spring.
(5) Adjust the steering wheel so that the tires are
in a straight ahead position. Remove steering wheel,
(Refer to 19 - STEERING/COLUMN/STEERING
WHEEL - REMOVAL)
(6) Disconnect the 2-way and 4-way connectors
between the clock spring and the instrument panel
wiring harness.(7) Remove upper and lower steering column
shrouds.
(8) Remove clock spring from the housing assem-
bly by depressing the 2 tabs on the clock spring.
UNDEPLOYED AIRBAG
(1) Remove screws attaching airbag/horn switch to
steering wheel.
(2) Remove Driver Airbag from steering wheel.
(3) Disconnect wire connectors from driver airbag
and clock spring.
INSTALLATION
DEPLOYED AIRBAG
(1) Perform cleanup procedure.(Refer to 8 - ELEC-
TRICAL/RESTRAINTS/DRIVER AIRBAG - STAN-
DARD PROCEDURE)
(2) Install a new steering column assembly and
lower steering column coupler. Refer to Steering, Col-
umn, Installation.
(3) Install the clock spring.
(4) Install the driver airbag and the two screws
retaining the airbag. Tighten screws to 10 N´m (90
in. lbs.)
WARNING: DO NOT CONNECT THE BATTERY NEG-
ATIVE CABLE. REFER TO ELECTRICAL,
RESTRAINTS, DIAGNOSIS AND TESTING - AIRBAG
SYSTEM FIRST.
UNDEPLOYED AIRBAG
(1) Position a new airbag into the airbag cavity.
(2) Install the two screws retaining the airbag.
Tighten screws to 10 N´m (90 in. lbs.)
WARNING: DO NOT CONNECT THE BATTERY NEG-
ATIVE CABLE. REFER TO ELECTRICAL,
RESTRAINTS, DIAGNOSIS AND TESTING - AIRBAG
SYSTEM FIRST.
DRIVER AIRBAG TRIM COVER
REMOVAL
The horn switch is integral to the driver airbag
trim cover. If either component is faulty or damaged,
the entire driver airbag trim cover and horn switch
unit must be replaced.
(1) Disconnect and isolate the battery negative
cable.
WARNING: WAIT TWO MINUTES FOR THE AIRBAG
SYSTEM RESERVE CAPACITOR TO DISCHARGE.
8O - 4 RESTRAINTSRS
DRIVER AIRBAG (Continued)
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(2) Remove the driver airbag from the steering
wheel (Refer to 8 - ELECTRICAL/RESTRAINTS/
DRIVER AIRBAG - REMOVAL).
(3) Remove the plastic wire retainer that captures
the horn switch feed pigtail wire between the upper
left inflator stud and the inflator on the back of the
driver airbag housing.
(4) Remove the four nuts that secure the upper
and lower trim cover retainers to the studs on the
back of the driver airbag housing.
(5) Remove the upper and lower trim cover retain-
ers from the airbag housing studs.
(6) Remove the horn switch ground pigtail wire
eyelet terminal from the upper right airbag housing
stud.
(7) Disengage the six trim cover locking blocks
from the lip around the outside edge of the driver
airbag housing and remove the housing from the
cover.
INSTALLATION
(1) Install the housing into the cover. Engage the
six trim cover locking blocks to the lip around the
outside edge of the driver airbag housing.
(2) Install the horn switch ground pigtail wire eye-
let terminal to the upper right airbag housing stud.
(3) Install the upper and lower trim cover retain-
ers to the airbag housing studs.
(4) Install the four nuts that secure the upper and
lower trim cover retainers to the studs on the back of
the driver airbag housing.
(5) Install the plastic wire retainer that captures
the horn switch feed pigtail wire between the upper
left inflator stud and the inflator on the back of the
driver airbag housing.
(6) Install the driver airbag onto the steering
wheel (Refer to 8 - ELECTRICAL/RESTRAINTS/
DRIVER AIRBAG - INSTALLATION).
WARNING: DO NOT CONNECT THE BATTERY NEG-
ATIVE CABLE. FIRST (Refer to 8 - ELECTRICAL/RE-
STRAINTS/DIAGNOSIS AND TESTING - AIRBAG
SYSTEM).
OCCUPANT RESTRAINT
CONTROLLER
DESCRIPTION
The front driver and passenger airbag system is
designed to reduce the risk of fatality or serious
injury, caused by a frontal impact of the vehicle.
The Occupant Restraint Controller (ORC) contains
the impact sensor and energy reserve capacitor. It is
mounted on a bracket, under the instrument panel,just forward of the storage bin. The ORC monitors
the system to determine the system readiness. The
ORC contains on-board diagnostics and will light the
AIRBAG warning lamp in the message center when a
problem occurs.
OPERATION
The impact sensor provides verification of the
direction and severity of the impact. One impact sen-
sor is used. It is located inside the Occupant
Restraint Controller (ORC). The impact sensor is an
accelerometer that senses deceleration. The decelera-
tion pulses are sent to a microprocessor which con-
tains a decision algorithm. When an impact is severe
enough to require airbag protection, the ORC micro-
processor sends a signal that completes the electrical
circuit to the driver and passenger airbags. The
impact sensor is calibrated for the specific vehicle
and reacts to the severity and direction of an impact.
REMOVAL
NOTE: Diagnose the ORC using the service/diag-
nostic manual.
(1) Disconnect and isolate the battery negative
cable.
(2) Remove storage bin from instrument panel.
Refer to Body, Instrument Panel, Storage Bin,
Removal.
(3) Remove three bolts holding ORC to floor
bracket.
(4) Disconnect the wire connector from ORC.
(5) Remove the ORC assembly from vehicle.
INSTALLATION
WARNING: DO NOT INSTALL ORC IF MOUNTING
LOCATION IS DEFORMED OR DAMAGED.
CAUTION: Use correct screws when installing the
ORC.
(1) Install the ORC assembly into vehicle.
(2) Connect the wire connector to the ORC.
(3) Install three bolts holding ORC to floor
bracket. Torque bolts to 7.3 - 9.6 N´m (65 to 85 in.
lbs.)
(4) Install the storage bin onto the instrument
panel. Refer to Body, Instrument Panel, Storage Bin,
Installation.
WARNING: DO NOT CONNECT THE BATTERY NEG-
ATIVE CABLE. REFER TO ELECTRICAL,
RESTRAINTS, DIAGNOSIS AND TESTING - AIRBAG
SYSTEM FIRST.
RSRESTRAINTS8O-5
DRIVER AIRBAG TRIM COVER (Continued)
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(2) Install airbag attaching bolts to the instrument
panel.
(3) Connect yellow wire connector from passenger
airbag.
(4) Install Instrument panel. Refer to Body, Instru-
ment Panel, Installation.
WARNING: DO NOT CONNECT THE BATTERY NEG-
ATIVE CABLE. REFER TO ELECTRICAL,
RESTRAINTS, DIAGNOSIS AND TESTING - AIRBAG
SYSTEM FIRST.
UNDEPLOYED AIRBAG
(1) Install Passenger Airbag into instrument panel.
(2) Install airbag attaching bolts to the instrument
panel.
(3) Connect yellow wire connector from passenger
airbag.
(4) Install Instrument panel. Refer to Body, Instru-
ment Panel, Installation.
WARNING: DO NOT CONNECT THE BATTERY NEG-
ATIVE CABLE. REFER TO ELECTRICAL,
RESTRAINTS, DIAGNOSIS AND TESTING - AIRBAG
SYSTEM FIRST.
SEAT AIRBAG
DESCRIPTION
The side impact airbag system Seat Airbags are
located in the outboard side of the front seat backs.One in each front seat. The seat airbag inflator
assembly is within the airbag housing (Fig. 1). Each
airbag is mounted to the seat back frame. If deployed
or defective, the entire seat back assembly must be
replaced.
OPERATION
Only the Side Impact Airbag Control Module
(SIACM) can deploy the side airbags. When supplied
with the proper electrical signal, the seat airbag
inflator will produce a gas and discharge the bag
directly between the occupant and the side of the
vehicle, protecting the occupant. Upon deployment,
the seat back trim cover will tear open and allow the
side airbag to fully inflate and quickly deflate.
SEAT BELT OUTBOARD
FRONT
REMOVAL
Inspect the condition of the shoulder belt and lap
belt. Replace any belt that is cut, frayed, torn, or
damaged in any way. Also, replace the shoulder belt
if the retractor is either damaged or inoperative.
(1) Remove shoulder harness height adjuster knob
by pulling it straight away from adjuster.
(2) Remove cover from seat belt turning loop.
(3) Remove bolt attaching turning loop to shoulder
belt height adjuster (Fig. 2).
(4) Remove turning loop from B-pillar.
(5) Remove lower B-pillar trim cover or quarter
trim panel.
(6) Remove bolt attaching seat belt retractor to
B-pillar (Fig. 2).
(7) Lift retractor upward and disengage arrow
head retainer attaching retractor to B-pillar.
(8) Remove seat belt from vehicle.
INSTALLATION
Inspect the condition of the shoulder belt and lap
belt. Replace any belt that is cut, frayed, torn, or
damaged in any way. Also, replace the shoulder belt
if the retractor is either damaged or inoperative.
(1) Place seat belt into position.
(2) Lower retractor into position B-pillar.
(3) Install bolt attaching seat belt retractor to
B-pillar. Tighten all seat belt anchor bolts to 39 N´m
(29 ft. lbs.) torque.
(4) Install turning loop onto B-pillar.
(5) Install lower B-pillar trim cover or quarter
trim panel.
(6) Install bolt attaching turning loop to shoulder
belt height adjuster. Tighten all seat belt anchor
bolts to 39 N´m (29 ft. lbs.) torque.
(7) Press cover onto the seat belt turning loop.
Fig. 1 SEAT AIRBAG - TYPICAL
RSRESTRAINTS8O-7
PASSENGER AIRBAG (Continued)
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SIDE IMPACT AIRBAG
CONTROL MODULE
DESCRIPTION
The side airbag system is a safety devise designed
to reduce the risk of fatality or serious injury, caused
by a side impact of the vehicle.
Vehicles equipped with side impact airbags use two
Side Impact Airbag Control Modules (SIACM). One is
located on each respective side body B-pillar. Each
contains an impact sensor that senses a side impact
occurrence. The SIACM communicates with the ORC
via the PCI bus in order to notify the driver of any
potential side airbag system problem.
OPERATION
The impact sensor provides verification of the
direction and severity of the side impact. The right
side SIACM controls the right seat airbag. The left
side SIACM controls the left seat airbag. In the event
of a side impact the appropriate SIACM will send an
electronic signal to its airbag, deploying the airbag.
The SIACM communicates with the Occupant
Restraint Controller (ORC) via the PCI bus circuit.
The accelerometer pulses are sent to a micropro-
cessor, which contains a decision algorithm. When an
impact is severe enough to require airbag protection,
the SIACM microprocessor sends a signal to deploy
the side airbag that completes the electrical circuits
to the right or left side airbag. The sensor is cali-
brated for the specific vehicle and reacts to the sever-
ity and direction of the impact.
REMOVAL
NOTE: Diagnose the SIACM using the service/diag-
nostic manual.
(1) Disconnect and isolate the battery negative
cable terminal.
(2) Remove the lower B-pillar trim from the appro-
priate side of the vehicle. Refer to Body, Interior,
B-Pillar Lower Trim, Removal.
(3) Remove the three SIACM retaining screws and
remove the module from the vehicle.
(4) Disconnect the SIACM electrical connector.
INSTALLATION
WARNING: DO NOT INSTALL THE SIACM IF THE
MOUNTING LOCATION IS DEFORMED OR DAM-
AGED.
(1) Connect the SIACM electrical connector.
(2) Place the module in the slot on their respective
B-pillar. Install the three SIACM retaining screws.
Torque screws to 5.7 - 7.9 N´m (50 - 70 lbs.)
CAUTION: Use the correct screws when installing
the SIACM.
(3) Install the lower B-pillar trim on the appropri-
ate side of the vehicle. Refer to Body, Interior, B-Pil-
lar Lower Trim, Installation.
WARNING: DO NOT CONNECT THE BATTERY NEG-
ATIVE CABLE. REFER TO ELECTRICAL,
RESTRAINTS, DIAGNOSIS AND TESTING - AIRBAG
SYSTEM FIRST.
8O - 16 RESTRAINTSRS
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CABLE
DESCRIPTION
The speed control servo cable is connected between
the speed control vacuum servo diaphragm and the
throttle body control linkage.
OPERATION
This cable causes the throttle control linkage to
open or close the throttle valve in response to move-
ment of the vacuum servo diaphragm.
REMOVAL
(1) Disconnect the negative battery cable.
(2) Remove speed control cable from throttle cam
by sliding clasp out hole used for throttle cable.
(3) Compress the retaining tabs on the cable and
slide cable out of bracket.
(4) Disconnect electrical connectors and vacuum
hose from servo.
(5) Remove two nuts attaching speed control cable
and mounting bracket to servo.
(6) Pull cable away from servo to expose retaining
clip and remove clip attaching cable to servo.
(7) Remove speed control cable.
INSTALLATION
(1) Slide cable into throttle cable bracket and
engage retaining tabs.
(2) Rotate the throttle cam forward to the wide
open position and install speed control cable clasp.
(3) Rotate the throttle cam forward to the wide
open position and install throttle cable clasp.
(4) Install retaining clip that attaches cable to
servo.
(5) Insert servo studs through holes in the mount-
ing bracket and speed control cable.
(6) Install nuts, tighten to 6.7 N´m (60 in. lbs.).
(7) Connect vacuum hose to servo.
(8) Connect electrical connector.
(9) Install servo and bracket and tighten nuts and
bolt.
(10) Connect negative battery cable.
SERVO
DESCRIPTION
The servo unit consists of a solenoid valve body,
and a vacuum chamber. The solenoid valve body con-
tains three solenoids:
²Vacuum
²Vent
²Dump
The vacuum chamber contains a diaphragm with a
cable attached to control the throttle linkage.
OPERATION
The PCM controls the solenoid valve body. The
solenoid valve body controls the application and
release of vacuum to the diaphragm of the vacuum
servo. The servo unit cannot be repaired and is ser-
viced only as a complete assembly.
Power is supplied to the servo by the PCM through
the brake switch. The PCM controls the ground path
for the vacuum and vent solenoids.
The dump solenoid is energized anytime it receives
power. If power to the dump solenoid is interrupted, the
solenoid dumps vacuum in the servo. This provides a
safety backup to the vent and vacuum solenoids.
The vacuum and vent solenoids must be grounded by
the PCM to operate. When the PCM grounds the vac-
uum servo solenoid, the solenoid allows vacuum to enter
the servo and pull open the throttle plate using the
cable. When the PCM breaks the ground, the solenoid
closes and no more vacuum is allowed to enter the
servo. The PCM also operates the vent solenoid via
ground. The vent solenoid opens and closes a passage to
bleed or hold vacuum in the servo as required.
The PCM cycles the vacuum and vent solenoids to
maintain the set speed, or to accelerate and deceler-
ate the vehicle. To increase throttle opening, the
PCM grounds the vacuum and vent solenoids. To
decrease throttle opening, the PCM removes the
grounds from the vacuum and vent solenoids.
REMOVAL
(1) Release hood latch and open hood.
(2) Disconnect the negative battery cable.
(3) Disconnect the throttle and speed control cable
ends from throttle body (Fig. 2).
Fig. 2 Speed Control Cable End
1 - SPEED CONTROL VACUUM HOSE
2 - THROTTLE BODY
3 - SPEED CONTROL CABLE
8P - 4 SPEED CONTROLRS
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(4) Depress lock tabs holding speed control and
throttle cable casing to cable mount bracket.
(5) Disconnect vacuum line from speed control
servo that leads to the battery tray/vacuum reservoir.
(6) Remove battery tray/vacuum reservoir, refer to
the Battery section for more information (Fig. 3).
(7) Remove speed control servo and bracket (Fig.
4).
(8) Disconnect wire connector from speed control
servo.
(9) Remove speed control servo.
INSTALLATION
Transfer speed control cable to replacement speed
control servo.(1) Install retaining clip to cable at servo.
(2) Install 2 nuts at cable to servo and servo
bracket, tighten to 7 N´m (60 ins. lbs.).
(3) Connect electrical connector to servo.
(4) Connect vacuum line to speed control servo
that leads to the battery tray/vacuum reservoir.
(5) Install speed control servo and bracket.
(6) Install battery tray/vacuum reservoir, refer to
the Battery section for more information.
(7) Install speed control and throttle cable casing
to cable mount bracket.
(8) Connect the throttle and speed control cable
ends to throttle body.
(9) Connect the negative battery cable.
SWITCH
DESCRIPTION
There are two separate switch pods that operate
the speed control system and are located on the
steering wheel.
OPERATION
The speed control system has five separate resis-
tive switches that provide a single multiplexed
(MUX) voltage inputs to the PCM.The switch names
are: ON, OFF, SET, COAST, RESUME, ACCEL, TAP-
UP, COAST, and CANCEL. Based on conditions when
the buttons are pushed (and released), the five volt-
ages ranges provided to the PCM result in the follow-
ing functions: ON, OFF, SET, COAST, RESUME,
ACCEL, TAP-UP, TAP-DOWN, COAST, and CAN-
CEL. Refer to the Speed Control Section for more
information
Also the PCM receives an input from the brake
switch to sense whether the brake pedal has been
depressed. When the PCM receives the brake
depressed input, it turns off power to the speed con-
trol servo and disengages speed control. Also the
power to the servo is supplied through the brake
switch, which opens the circuit when the brake pedal
is depressed.
The individual switches cannot be repaired. If one
switch fails, the entire switch module must be
replaced.
REMOVAL
The speed control switches are mounted in the
steering wheel and wired through the clock spring
device under the airbag module.
WARNING: IF REMOVAL OF AIRBAG MODULE IS
NECESSARY, REFER TO THE RESTRAINT SYS-
TEMS SECTION FOR MORE INFORMATION.
(1) Remove the negative battery cable.
Fig. 3 BATTERY TRAY/VACUUM RESERVOIR
Fig. 4 SPEED CONTROL SERVO
RSSPEED CONTROL8P-5
SERVO (Continued)
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(2) Turn off ignition.
(3) Remove the air bag, refer to the restraint sec-
tion for more information.
(4) Remove the screw from bottom of the switch.
(5) Remove switch from steering wheel.
(6) Disconnect two-way electrical connector.
(7) Repeat for the other switch.
INSTALLATION
The speed control switches are mounted in the
steering wheel and wired through the clock spring
device under the airbag module.
WARNING: IF REMOVAL OF AIRBAG MODULE IS
NECESSARY, REFER TO THE RESTRAINT SYS-
TEMS SECTION FOR MORE INFORMATION.
(1) Connect two-way electrical connector.
(2) Install switch.
(3) Install screw for the switch.
(4) Repeat for the other switch.
(5) Install the air bag, refer to the restraint section
for more information.
(6) Install the negative battery cable.
VACUUM RESERVOIR
DESCRIPTION
The vacuum reservoir is located in the engine com-
partment. It is made of plastic.
OPERATION
The reservoir stores engine vacuum. Manifold vac-
uum is supplied from the brake booster check valve.
The speed control vacuum supply hose has a check
valve at the source (brake booster) to maintain the
highest available vacuum level in the servo, reservoir
and vacuum hoses. When engine vacuum drops, as in
climbing a grade while driving, the reservoir supplies
the vacuum needed to maintain proper speed control
operation. The vacuum reservoir cannot be repaired
and must be replaced if faulty.
REMOVAL
(1) Release hood latch and open hood.
(2) Disconnect the negative battery cable.
(3) Disconnect the vacuum line to the battery tray/
vacuum reservoir.
(4) Remove battery tray/vacuum reservoir, refer to
the Battery section for more information.
INSTALLATION
(1) Install battery tray/vacuum reservoir, refer to
the Battery section for more information.
(2) Connect vacuum line that leads to the battery
tray/vacuum reservoir.
(3) Connect the negative battery cable.
8P - 6 SPEED CONTROLRS
SWITCH (Continued)
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