sensor JEEP LIBERTY 2002 KJ / 1.G Workshop Manual

WARNING: WHEN REMOVING A DEPLOYED AIR-
BAG, RUBBER GLOVES, EYE PROTECTION, AND A
LONG-SLEEVED SHIRT SHOULD BE WORN. THERE
MAY BE DEPOSITS ON THE AIRBAG UNIT AND
OTHER INTERIOR SURFACES. IN LARGE DOSES,
THESE DEPOSITS MAY CAUSE IRRITATION TO THE
SKIN AND EYES.
(1) Disconnect and isolate the battery negative
cable. Wait two minutes for the system capacitor to
discharge before further service.
(2) Remove the top cover from the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
INSTRUMENT PANEL TOP COVER - REMOVAL).
(3) Remove the passenger side bezel from the
upper glove box opening of the instrument panel.
(Refer to 23 - BODY/INSTRUMENT PANEL/IP PAS-
SENGER SIDE BEZEL - REMOVAL).
(4) Remove the three small screws that secure the
passenger airbag door to the glove box opening upper
reinforcement (Fig. 26).
(5) Remove the three large screws that secure the
passenger airbag door to the glove box opening upper
reinforcement.
(6) Remove the one small screw that secures the
passenger airbag door to the top of the instrument
panel.
(7) Remove the four large screws that secure the
passenger airbag door to the top of the instrument
panel.
(8) Remove the passenger airbag door from the
instrument panel.INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
WARNING: THE PASSENGER AIRBAG DOOR MUST
NEVER BE PAINTED. REPLACEMENT PASSENGER
AIRBAG DOORS ARE SERVICED IN THE ORIGINAL
COLORS. PAINT MAY CHANGE THE WAY IN WHICH
THE MATERIAL OF THE AIRBAG DOOR RESPONDS
TO AN AIRBAG DEPLOYMENT. FAILURE TO OBSERVE
THIS WARNING COULD RESULT IN OCCUPANT INJU-
RIES UPON AIRBAG DEPLOYMENT.
(1) Position the passenger airbag door onto the
instrument panel (Fig. 26).
(2) Install and tighten the four large screws that
secure the passenger airbag door to the top of the
instrument panel. Tighten the screws to 4 N´m (35
in. lbs.).
(3) Install and tighten the one small screw that
secures the passenger airbag door to the top of the
instrument panel. Tighten the screw to 2 N´m (20 in.
lbs.).
(4) Install and tighten the three large screws that
secure the passenger airbag door to the glove box
opening upper reinforcement. Tighten the screws to 4
N´m (35 in. lbs.).
(5) Install and tighten the three small screws that
secure the passenger airbag door to the glove box
opening upper reinforcement. Tighten the screws to 2
N´m (20 in. lbs.).
(6) Reinstall the passenger side bezel onto the
upper glove box opening of the instrument panel.
(Refer to 23 - BODY/INSTRUMENT PANEL/IP PAS-
SENGER SIDE BEZEL - INSTALLATION).
(7) Reinstall the top cover onto the instrument
panel. (Refer to 23 - BODY/INSTRUMENT PANEL/
INSTRUMENT PANEL TOP COVER - INSTALLA-
TION).
(8) Reconnect the battery negative cable.
Fig. 26 Passenger Airbag Door Remove/Install
1 - PASSENGER AIRBAG DOOR
2 - LARGE SCREW (7)
3 - SMALL SCREW (4)
8O - 30 RESTRAINTSKJ
PASSENGER AIRBAG DOOR (Continued)

PASSENGER AIRBAG
MOUNTING BRACKET
REMOVAL
The passenger airbag mounting brackets cannot be
repaired. They must be replaced if faulty or dam-
aged, or if the passenger airbag has been deployed.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
(1) Remove the passenger airbag from the instru-
ment panel. (Refer to 8 - ELECTRICAL/RE-
STRAINTS/PASSENGER AIRBAG - REMOVAL).
(2) Remove the two screws that secure the inboard
and/or outboard passenger airbag mounting brack-
et(s) to the instrument panel support structure (Fig.
27).
(3) Remove the inboard and/or outboard passenger
airbag mounting bracket(s) from the instrument
panel support structure.
INSTALLATION
The passenger airbag mounting brackets cannot be
repaired. They must be replaced if faulty or dam-
aged, or if the passenger airbag has been deployed.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
(1) Position the inboard and/or outboard passenger
airbag mounting bracket(s) to the instrument panel
support structure (Fig. 27).
(2) Install and tighten the two screws that secure
the inboard and/or outboard passenger airbag mount-
ing bracket(s) to the instrument panel support struc-
ture. Tighten the screws to 2 N´m (20 in. lbs.).
(3) Reinstall the passenger airbag to the instru-
ment panel. (Refer to 8 - ELECTRICAL/RE-
STRAINTS/PASSENGER AIRBAG -
INSTALLATION).
Fig. 27 Passenger Airbag Mounting Brackets
Remove/Install
1 - INBOARD BRACKET
2 - I/P SUPPORT STRUCTURE
3 - OUTBOARD BRACKET
4 - SCREW (2)
5 - SCREW (2)
KJRESTRAINTS 8O - 31

(1) Unlatch the rear seat back and fold it forward
far enough to access the screw that secures the rear
seat belt buckle anchor to the rear floor panel
between the rear seat back and the rear seat cush-
ion.
(2) Remove the screw that secures the rear seat
belt buckle anchor to the rear floor panel (Fig. 32).
(3) Lift the rear seat belt buckle anchor off of the
stud on the rear floor panel.
(4) Remove the rear seat belt buckle and anchor
from between the rear seat back and the rear seat
cushion as a unit.
INSTALLATION
WARNING: DURING AND FOLLOWING ANY SEAT
BELT SERVICE, CAREFULLY INSPECT ALL SEAT
BELTS, BUCKLES, MOUNTING HARDWARE, AND
RETRACTORS FOR PROPER INSTALLATION,
OPERATION, OR DAMAGE. REPLACE ANY BELT
THAT IS CUT, FRAYED, OR TORN. STRAIGHTEN
ANY BELT THAT IS TWISTED. TIGHTEN ANY
LOOSE FASTENERS. REPLACE ANY BELT THAT
HAS A DAMAGED OR INOPERATIVE BUCKLE OR
RETRACTOR. REPLACE ANY BELT THAT HAS A
BENT OR DAMAGED LATCH PLATE OR ANCHOR
PLATE. NEVER ATTEMPT TO REPAIR A SEAT BELT
COMPONENT. ALWAYS REPLACE DAMAGED OR
FAULTY SEAT BELT COMPONENTS WITH THE COR-
RECT, NEW AND UNUSED REPLACEMENT PARTS
LISTED IN THE MOPAR PARTS CATALOG.(1) Unlatch the rear seat back and fold it forward
far enough to access the mounting location for the
rear seat belt buckle anchor to the rear floor panel
between the rear seat back and the rear seat cush-
ion.
(2) Position the rear seat belt buckle and anchor
between the rear seat back and the rear seat cushion
as a unit (Fig. 32).
(3) Lower the rear seat belt buckle anchor over the
stud on the rear floor panel.
(4) Install and tighten the screw that secures the
rear seat belt buckle anchor to the rear floor panel.
Tighten the screw to 43 N´m (32 ft. lbs.).
SEAT BELT SWITCH
DESCRIPTION
The seat belt switch for this model is actually a
Hall Effect-type sensor. This sensor consists of a
fixed-position, Hall Effect Integrated Circuit (IC) chip
and a small, movable, permanent magnet that are
integral to each front seat belt buckle. The front seat
belt buckles are each located on a stamped steel
stanchion secured with a screw to the inboard side of
each front seat cushion frame between the seat and
the floor panel transmission tunnel (Fig. 33). The
seat belt switches are connected to the vehicle elec-
trical system through a two-lead pigtail wire and
connector on the seat belt buckle-half, which is con-
nected to a wire harness connector and take out of
the seat wire harness beneath the rear edge of the
seat cushion frame. A diagnostic resistor is connected
Fig. 32 Rear Seat Belt Buckle Remove/Install
1 - SCREW (1)
2 - BUCKLE (SINGLE)
3 - REAR SEAT
4 - BUCKLE (DOUBLE)
5 - SCREW (1)
6- REAR FLOOR PANEL
Fig. 33 Front Seat Belt Buckle
1 - FRONT SEAT BELT BUCKLE
2 - INBOARD SIDE SHIELD
3 - SCREW
4 - PIGTAIL WIRE
KJRESTRAINTS 8O - 35
REAR SEAT BELT BUCKLE (Continued)

through the tube. The rack gear engages a pinion
gear that drives a gear set in the tensioner housing,
which drives the seat belt retractor spool causing the
slack to be removed from the driver side front seat
belt. Removing excess slack from the driver side front
seat belt not only keeps the occupant properly posi-
tioned for an airbag deployment following a frontal
impact of the vehicle, but also helps to reduce inju-
ries that the occupant of the driver side front seat
might experience in these situations as a result of a
harmful contact with the steering wheel and/or steer-
ing column. Also, the seat belt tensioner has a tor-
sion bar mechanism that is designed to deform in
order to control the loading being applied to the occu-
pant of the driver side front seat by the seat belt dur-
ing a frontal impact, further reducing the potential
for occupant injuries.
The ACM monitors the condition of the seat belt
tensioner through circuit resistance, and will illumi-
nate the airbag indicator in the ElectroMechanical
Instrument Cluster (EMIC) and store a Diagnostic
Trouble Code (DTC) for any fault that is detected.
For proper diagnosis of the seat belt tensioner, a
DRBIIItscan tool is required. Refer to the appropri-
ate diagnostic information.
SEAT BELT TURNING LOOP
ADJUSTER
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
WARNING: DURING AND FOLLOWING ANY SEAT
BELT SERVICE, CAREFULLY INSPECT ALL SEAT
BELTS, BUCKLES, MOUNTING HARDWARE, AND
RETRACTORS FOR PROPER INSTALLATION,
OPERATION, OR DAMAGE. REPLACE ANY BELTTHAT IS CUT, FRAYED, OR TORN. STRAIGHTEN
ANY BELT THAT IS TWISTED. TIGHTEN ANY
LOOSE FASTENERS. REPLACE ANY BELT THAT
HAS A DAMAGED OR INOPERATIVE BUCKLE OR
RETRACTOR. REPLACE ANY BELT THAT HAS A
BENT OR DAMAGED LATCH PLATE OR ANCHOR
PLATE. NEVER ATTEMPT TO REPAIR A SEAT BELT
COMPONENT. ALWAYS REPLACE DAMAGED OR
FAULTY SEAT BELT COMPONENTS WITH THE COR-
RECT, NEW AND UNUSED REPLACEMENT PARTS
LISTED IN THE MOPAR PARTS CATALOG.
(1) Disconnect and isolate the battery negative
cable. Wait two minutes for the system capacitor to
discharge before further service.
(2) Unsnap and lift the trim cover to access the
nut that secures the front seat belt turning loop to
the height adjuster on the upper B-pillar.
(3) Remove the nut that secures the seat belt turn-
ing loop to the height adjuster stud on the upper
B-pillar.
(4) Remove the seat belt turning loop from the
height adjuster stud.
(5) Remove the upper trim from the inside of the
B-pillar. (Refer to 23 - BODY/INTERIOR/B-PILLAR
UPPER TRIM - REMOVAL).
(6) Remove the screw that secures the seat belt
turning loop adjuster to the upper B-pillar (Fig. 35).
(7) Pull the upper end of the turning loop adjuster
away from the B-pillar far enough to disengage the
hooks on the lower end of the adjuster from the slots
in the B-pillar.
(8) Remove the seat belt turning loop adjuster
from the B-pillar.
Fig. 35 Seat Belt Turning Loop Adjuster Remove/
Install
1 - SCREW
2 - B-PILLAR
3 - ADJUSTER
KJRESTRAINTS 8O - 37
SEAT BELT TENSIONER (Continued)

INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
WARNING: DURING AND FOLLOWING ANY SEAT
BELT SERVICE, CAREFULLY INSPECT ALL SEAT
BELTS, BUCKLES, MOUNTING HARDWARE, AND
RETRACTORS FOR PROPER INSTALLATION,
OPERATION, OR DAMAGE. REPLACE ANY BELT
THAT IS CUT, FRAYED, OR TORN. STRAIGHTEN
ANY BELT THAT IS TWISTED. TIGHTEN ANY
LOOSE FASTENERS. REPLACE ANY BELT THAT
HAS A DAMAGED OR INOPERATIVE BUCKLE OR
RETRACTOR. REPLACE ANY BELT THAT HAS A
BENT OR DAMAGED LATCH PLATE OR ANCHOR
PLATE. NEVER ATTEMPT TO REPAIR A SEAT BELT
COMPONENT. ALWAYS REPLACE DAMAGED OR
FAULTY SEAT BELT COMPONENTS WITH THE COR-
RECT, NEW AND UNUSED REPLACEMENT PARTS
LISTED IN THE MOPAR PARTS CATALOG.
(1) Position the seat belt turning loop adjuster to
the B-pillar (Fig. 35).
(2) Engage the hooks on the lower end of the
adjuster into the slots in the B-pillar.
(3) Tilt the upper end of the turning loop adjuster
up into position against the B-pillar.
(4) Install and tighten the screw that secures the
seat belt turning loop adjuster to the upper B-pillar.
Tighten the screw to 34 N´m (25 ft. lbs.).
(5) Reinstall the upper trim onto the inside of the
B-pillar. (Refer to 23 - BODY/INTERIOR/B-PILLAR
UPPER TRIM - INSTALLATION).
(6) Position the seat belt turning loop onto the
height adjuster stud on the upper B-pillar.
(7) Install and tighten the nut that secures the
seat belt turning loop to the height adjuster stud.
Tighten the nut to 34 N´m (25 ft. lbs.).(8) Fold and snap the trim cover back into place to
conceal the nut that secures the front seat belt turn-
ing loop to the height adjuster on the upper B-pillar.
(9) Reconnect the battery negative cable.
SIDE CURTAIN AIRBAG
DESCRIPTION
Optional side curtain airbags are available for this
model when it is also equipped with dual front air-
bags. These airbags are passive, inflatable, Supple-
mental Restraint System (SRS) components, and
vehicles with this equipment can be readily identified
by a molded identification trim button with the ªSRS
- AIRBAGº logo located on the headliner above each
B-pillar (Fig. 36). This system is designed to reduce
injuries to the vehicle occupants in the event of a
side impact collision.
Vehicles equipped with side curtain airbags have
two individually controlled curtain airbag units.
These airbag units are concealed and mounted above
the headliner where they are each secured to one of
the roof side rails (Fig. 37). Each folded airbag cush-
ion is contained within a long extruded plastic chan-
nel that extends along the roof rail from the A-pillar
at the front of the vehicle to just behind the C-pillar
at the rear of the vehicle. The channel is secured
with plastic push-in fasteners to the roof rail. A
tether extends down the A-pillar from the front of the
airbag cushion, where it is retained to the pillar with
plastic push-in routing clips and it is secured to the
base of the A-pillar near the belt line with a screw.
The hybrid-type inflator for each airbag is secured
to the roof rail at the rear of the airbag unit between
the C-pillar and the D-pillar, and is connected to the
airbag cushion by a long tubular manifold. The
bracket holding the inflator and three other brackets
holding the manifold are secured to the roof rail with
Fig. 36 SRS Logo
8O - 38 RESTRAINTSKJ
SEAT BELT TURNING LOOP ADJUSTER (Continued)

REMOVAL
The following procedure is for replacement of a
faulty or damaged side curtain airbag. If the side
curtain airbag has been deployed, review the recom-
mended procedures for service after a supplemental
restraint deployment before removing the airbag
from the vehicle. (Refer to 8 - ELECTRICAL/RE-
STRAINTS - STANDARD PROCEDURE - SERVICE
AFTER A SUPPLEMENTAL RESTRAINT DEPLOY-
MENT).
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
WARNING: WHEN REMOVING A DEPLOYED AIR-
BAG, RUBBER GLOVES, EYE PROTECTION, AND A
LONG-SLEEVED SHIRT SHOULD BE WORN. THERE
MAY BE DEPOSITS ON THE AIRBAG UNIT AND
OTHER INTERIOR SURFACES. IN LARGE DOSES,
THESE DEPOSITS MAY CAUSE IRRITATION TO THE
SKIN AND EYES.
WARNING: USE EXTREME CARE TO PREVENT ANY
FOREIGN MATERIAL FROM ENTERING THE SIDE
CURTAIN AIRBAG, OR BECOMING ENTRAPPED
BETWEEN THE SIDE CURTAIN AIRBAG CUSHION
AND THE HEADLINER. FAILURE TO OBSERVE THIS
WARNING COULD RESULT IN OCCUPANT INJURIES
UPON AIRBAG DEPLOYMENT.(1) Disconnect and isolate the battery negative
cable. Wait two minutes for the system capacitor to
discharge before further service.
(2) Remove the lower trim from the inside of the
B-pillar. (Refer to 23 - BODY/INTERIOR/B-PILLAR
LOWER TRIM - REMOVAL).
(3) Remove the headliner from the vehicle. (Refer
to 23 - BODY/INTERIOR/HEADLINER - REMOV-
AL).
(4) Remove the screw that secures the side curtain
airbag tether retainer to the base of the A-pillar near
the belt line (Fig. 38).
Fig. 38 Side Curtain Airbag Tether Remove/Install
1 - A-PILLAR
2 - CLIP (2)
3 - TETHER
4 - RETAINER (1)
5 - SCREW (1)
8O - 40 RESTRAINTSKJ
SIDE CURTAIN AIRBAG (Continued)

(5) Disengage the two side curtain airbag tether
plastic retainer clips from the A-pillar.
(6) Disconnect the side curtain airbag pigtail wire
connector from the body wire harness connector near
the base of the B-pillar (Fig. 39).
(7) Disengage the three side curtain airbag pigtail
wire retainer clips from the B-pillar.
(8) Remove the three screws that secure the side
curtain airbag manifold tube brackets to the U-nuts
in the roof rail (Fig. 40) and (Fig. 41).
(9) Remove the two screws that secure the side
curtain airbag inflator bracket to the U-nuts in the
roof rail (Fig. 42).
(10) Grasp the extruded plastic side curtain airbag
channel firmly and pull it straight away from the
roof rail far enough to disengage all four plastic
push-in fasteners that secure it.
(11) Remove the side curtain airbag from the vehi-
cle as a unit.
INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
WARNING: WHEN REMOVING A DEPLOYED AIR-
BAG, RUBBER GLOVES, EYE PROTECTION, AND A
LONG-SLEEVED SHIRT SHOULD BE WORN. THERE
MAY BE DEPOSITS ON THE AIRBAG UNIT AND
OTHER INTERIOR SURFACES. IN LARGE DOSES,
THESE DEPOSITS MAY CAUSE IRRITATION TO THE
SKIN AND EYES.
Fig. 39 Side Curtain Airbag Pigtail Wire Remove/
Install
1 - RETAINER (3)
2 - B-PILLAR
3 - WIRE HARNESS CONNECTOR
4 - PIGTAIL WIRE
Fig. 40 Side Curtain Airbag (Front) Remove/Install
1 - ROOF PANEL
2 - PIGTAIL WIRE
3 - B-PILLAR
4 - PUSH-IN FASTENER (4)
5 - RETAINER
6 - CHANNEL
7 - A-PILLAR
8 - TETHER
9 - SCREW (3)
10 - U-NUT (5)
KJRESTRAINTS 8O - 41
SIDE CURTAIN AIRBAG (Continued)

(10) Reinstall the headliner into the vehicle. (Refer
to 23 - BODY/INTERIOR/HEADLINER - INSTALLA-
TION).
(11) Reinstall the lower trim onto the inside of the
B-pillar. (Refer to 23 - BODY/INTERIOR/B-PILLAR
LOWER TRIM - INSTALLATION).
(12) Do not reconnect the battery negative cable at
this time. The airbag system verification test proce-
dure should be performed following service of any
supplemental restraint system component. (Refer to
8 - ELECTRICAL/RESTRAINTS - STANDARD PRO-
CEDURE - VERIFICATION TEST).
SIDE IMPACT AIRBAG
CONTROL MODULE
DESCRIPTION
On vehicles equipped with the optional side curtain
airbags, a Side Impact Airbag Control Module
(SIACM) and its mounting bracket are secured with
four screws to the sill panel at the base of each B-pil-
lar behind the lower B-pillar trim (Fig. 43). Con-
cealed within a hollow in the center of the die cast
aluminum SIACM housing is the electronic circuitry
of the SIACM which includes a microprocessor and
an electronic impact sensor. The SIACM housing is
secured to a stamped steel mounting bracket, which
is unique for the right or left side application of this
component. The SIACM should never be removed
from its mounting bracket. The housing also receives
a case ground through this mounting bracket when it
is secured to the vehicle. A molded plastic electrical
connector receptacle that exits the top of the SIACMhousing connects the unit to the vehicle electrical
system through a dedicated take out and connector of
the body wire harness. Both the SIACM housing and
its electrical connection are sealed to protect the
internal electronic circuitry and components against
moisture intrusion.
The impact sensor internal to the SIACM is cali-
brated for the specific vehicle, and is only serviced as
a unit with the SIACM. The SIACM cannot be
repaired or adjusted and, if damaged or faulty, it
must be replaced.
OPERATION
The microprocessor in the Side Impact Airbag Con-
trol Module (SIACM) contains the side curtain airbag
system logic circuits and controls all of the features
of only the side curtain airbag mounted on the same
side of the vehicle as the SIACM. The SIACM uses
On-Board Diagnostics (OBD) and can communicate
with other electronic modules in the vehicle as well
as with the DRBIIItscan tool using the Programma-
ble Communications Interface (PCI) data bus net-
work. This method of communication is used by the
SIACM to communicate with the Airbag Control
Module (ACM) and for supplemental restraints sys-
tem diagnosis and testing through the 16-way data
link connector located on the driver side lower edge
of the instrument panel. The ACM communicates
with both the left and right SIACM over the PCI
data bus.
The SIACM microprocessor continuously monitors
all of the side curtain airbag electrical circuits to
determine the system readiness. If the SIACM
detects a monitored system fault, it sets an active
and stored Diagnostic Trouble Code (DTC) and sends
electronic messages to the ACM over the PCI data
bus. The ACM will respond by sending an electronic
message to the EMIC to turn on the airbag indicator,
and by storing a DTC that will indicate whether the
left or the right SIACM has stored the DTC that ini-
tiated the airbag indicator illumination. An active
fault only remains for the current ignition switch
cycle, while a stored fault causes a DTC to be stored
in memory by the SIACM. For some DTCs, if a fault
does not recur for a number of ignition cycles, the
SIACM will automatically erase the stored DTC. For
other internal faults, the stored DTC is latched for-
ever.
The SIACM receives battery current on a fused
ignition switch output (run-start) circuit through a
fuse in the Junction Block (JB). The SIACM has a
case ground through its mounting bracket and also
receives a power ground through a ground circuit
and take out of the body wire harness. This take out
has a single eyelet terminal connector that is secured
by a ground screw to the front seat front crossmem-
Fig. 43 Side Impact Airbag Control Module
1 - BRACKET (RIGHT SHOWN)
2 - CONNECTOR RECEPTACLE
3 - SIACM
KJRESTRAINTS 8O - 43
SIDE CURTAIN AIRBAG (Continued)

ber beneath the respective right or left front seat.
These connections allow the SIACM to be operational
whenever the ignition switch is in the Start or On
positions. An electronic impact sensor is contained
within the SIACM. The electronic impact sensor is
an accelerometer that senses the rate of vehicle
deceleration, which provides verification of the direc-
tion and severity of an impact. A pre-programmed
decision algorithm in the SIACM microprocessor
determines when the deceleration rate as signaled by
the impact sensor indicates a side impact that is
severe enough to require side curtain airbag protec-
tion. When the programmed conditions are met, the
SIACM sends the proper electrical signals to deploy
the side curtain airbag.
The hard wired inputs and outputs for the SIACM
may be diagnosed and tested using conventional
diagnostic tools and procedures. However, conven-
tional diagnostic methods will not prove conclusive in
the diagnosis of the SIACM, the PCI data bus net-
work, or the electronic message inputs to and outputs
from the SIACM. The most reliable, efficient, and
accurate means to diagnose the SIACM, the PCI data
bus network, and the electronic message inputs to
and outputs from the SIACM requires the use of a
DRBIIItscan tool. Refer to the appropriate diagnos-
tic information.
REMOVAL
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
WARNING: THE SIDE IMPACT AIRBAG CONTROL
MODULE CONTAINS THE IMPACT SENSOR, WHICH
ENABLES THE SYSTEM TO DEPLOY THE SIDE
CURTAIN AIRBAGS. NEVER STRIKE OR DROP THE
SIDE IMPACT AIRBAG CONTROL MODULE, AS IT
CAN DAMAGE THE IMPACT SENSOR OR AFFECT
ITS CALIBRATION. IF A SIDE IMPACT AIRBAG CON-
TROL MODULE IS ACCIDENTALLY DROPPED DUR-ING SERVICE, THE MODULE MUST BE SCRAPPED
AND REPLACED WITH A NEW UNIT. FAILURE TO
OBSERVE THIS WARNING COULD RESULT IN ACCI-
DENTAL, INCOMPLETE, OR IMPROPER SIDE CUR-
TAIN AIRBAG DEPLOYMENT AND POSSIBLE
OCCUPANT INJURIES.
(1) Adjust the front seat to its most forward posi-
tion for easiest access to the lower B-pillar trim.
(2) Disconnect and isolate the battery negative
cable. Wait two minutes for the system capacitor to
discharge before further service.
(3) Remove the lower trim from the inside of the
B-pillar. (Refer to 23 - BODY/INTERIOR/B-PILLAR
LOWER TRIM - REMOVAL).
(4) Disconnect the body wire harness connector for
the Side Impact Airbag Control Module (SIACM)
from the module connector receptacle (Fig. 44).
(5) Disengage the body wire harness retainer from
the tab on the SIACM mounting bracket.
(6) Remove the four screws that secure the SIACM
mounting bracket to the sill panel at the base of the
B-pillar.
(7) Remove the SIACM and its mounting bracket
from the sill panel as a unit.
Fig. 44 Side Impact Airbag Control Module
Remove/Install
1 - B-PILLAR
2 - WIRE HARNESS CONNECTOR
3 - SIACM
4 - SCREW (4)
8O - 44 RESTRAINTSKJ
SIDE IMPACT AIRBAG CONTROL MODULE (Continued)

INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG,
OR INSTRUMENT PANEL COMPONENT DIAGNOSIS
OR SERVICE. DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE (GROUND) CABLE, THEN
WAIT TWO MINUTES FOR THE SYSTEM CAPACI-
TOR TO DISCHARGE BEFORE PERFORMING FUR-
THER DIAGNOSIS OR SERVICE. THIS IS THE ONLY
SURE WAY TO DISABLE THE SUPPLEMENTAL
RESTRAINT SYSTEM. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
WARNING: THE SIDE IMPACT AIRBAG CONTROL
MODULE CONTAINS THE IMPACT SENSOR, WHICH
ENABLES THE SYSTEM TO DEPLOY THE SIDE
CURTAIN AIRBAGS. NEVER STRIKE OR DROP THE
SIDE IMPACT AIRBAG CONTROL MODULE, AS IT
CAN DAMAGE THE IMPACT SENSOR OR AFFECT
ITS CALIBRATION. IF A SIDE IMPACT AIRBAG CON-
TROL MODULE IS ACCIDENTALLY DROPPED DUR-
ING SERVICE, THE MODULE MUST BE SCRAPPEDAND REPLACED WITH A NEW UNIT. FAILURE TO
OBSERVE THIS WARNING COULD RESULT IN ACCI-
DENTAL, INCOMPLETE, OR IMPROPER SIDE CUR-
TAIN AIRBAG DEPLOYMENT AND POSSIBLE
OCCUPANT INJURIES.
(1) Position the Side Impact Airbag Control Mod-
ule (SIACM) and its mounting bracket to the sill
panel as a unit (Fig. 44).
(2) Loosely install the four screws that secure the
SIACM mounting bracket to the sill panel at the
base of the B-pillar.
(3) Tighten the four screws that secure the SIACM
mounting bracket to the sill panel in the following
sequence: upper front, upper rear, lower front, lower
rear. Tighten the screws to 12 N´m (105 in. lbs.).
(4) Engage the body wire harness retainer to the
tab on the SIACM mounting bracket.
(5) Reconnect the body wire harness connector for
the SIACM to the module connector receptacle.
(6) Reinstall the lower trim onto the inside of the
B-pillar. (Refer to 23 - BODY/INTERIOR/B-PILLAR
LOWER TRIM - INSTALLATION).
(7) Do not reconnect the battery negative cable at
this time. The airbag system verification test proce-
dure should be performed following service of any
supplemental restraint system component. (Refer to
8 - ELECTRICAL/RESTRAINTS - STANDARD PRO-
CEDURE - VERIFICATION TEST).
KJRESTRAINTS 8O - 45
SIDE IMPACT AIRBAG CONTROL MODULE (Continued)