air bag CHRYSLER CARAVAN 2005 Owner's Manual

DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - SELF-
DIAGNOSTICS
The instrument clusters are equipped with a self
diagnostic test feature to help identify electronic
problems. Prior to any test, perform the Self-Diag-
nostic Test. The self diagnostic system displays
instrument cluster stored fault codes in the odometer
display, sweeps the gauges to the calibration points,
and bulb checks the warning indicators. When the
key is in the ON position with the engine not run-
ning, the MIL will remain illuminated for regulatory
purposes.
To activate the Self-Diagnostic program:
(1) With the ignition switch in the OFF position,
depress the TRIP ODOMETER RESET button.
(2) Continue to hold the TRIP ODOMETER
RESET button untilSofand a number (software ver-
sion number (i.e.Sof 3.2) appears in the odometer
window then release the button. If a fault code is
present, the cluster will display it in the odometer
display. When all fault codes have been displayed,
the cluster will displayªendºin the odometer dis-
play. Refer to the INSTRUMENT CLUSTER DTC'S
table to determine what each trouble code means.
INSTRUMENT CLUSTER DTC'S
DTC DESCRIPTION
100.0 LOOP-BACK FAILURE
100.1 ABS COMMUNICATION FAULT
100.2 BCM COMMUNICATION FAULT
100.3 EATX COMMUNICATION FAULT
100.4 FCM COMMUNICATION FAULT
100.5 ORC COMMUNICATION FAULT
100.6SBEC/DEC/MCM COMMUNICATION
FAULT
200.0 AIRBAG LED SHORT
200.1 AIRBAG LED OPEN
200.2 ABS LED SHORT
200.3 ABS LED OPEN
200.6 EL INVERTER TIME-OUT
200.7 EATX MISMATCH
400.0 EEPROM READ/WRITE FAILURE
400.1IMPROPER POWER DOWN
DETECTED
CALIBRATION TEST
The CLUSTER CALIBRATION table contains the
proper calibration points for each gauge. If the gauge
pointers are not calibrated, a problem exists in the
cluster. If any gauge is out of calibration, replace the
cluster.
CLUSTER CALIBRATION
SPEEDOMETER CALIBRATION POINT
1 0 MPH (0 KM/H)
2 20 MPH (40 KM/H)
3 60 MPH (100 KM/H)
4 100 MPH (160 KM/H)
TACHOMETER
1 0 RPM
2 1000 RPM
3 3000 RPM
4 6000 RPM
FUEL GAUGE
1 EMPTY
2 1/4 FILLED
3 1/2 FILLED
4 FULL
TEMPERATURE
GAUGE
1 COLD
2 1/4
3 3/4
4 HOT
ODOMETER SEGMENT TEST
If a segment in the odometer does not illuminate
normally, a problem exists in the display.
ELECTRONIC TRANSMISSION RANGE INDICATOR
SEGMENT TEST
If a segment in the transmission range indicator
does not illuminate normally, a problem exists in the
display.
8J - 2 INSTRUMENT CLUSTERRS
INSTRUMENT CLUSTER (Continued)

LAMPS/LIGHTING - INTERIOR
TABLE OF CONTENTS
page page
LAMPS/LIGHTING - INTERIOR
SPECIFICATIONS
INTERIOR LAMPS.....................20
CENTER CONSOLE LAMP
REMOVAL.............................21
INSTALLATION.........................21
CENTER CONSOLE LAMP SWITCH
REMOVAL.............................21
INSTALLATION.........................21
CLUSTER ILLUMINATION LAMPS
REMOVAL.............................21
INSTALLATION.........................21
COURTESY LAMP
REMOVAL.............................21
INSTALLATION.........................21DOME/CARGO LAMP
REMOVAL.............................22
INSTALLATION.........................22
GLOVE BOX LAMP SWITCH
REMOVAL.............................22
INSTALLATION.........................22
LIFTGATE LAMP
REMOVAL.............................22
INSTALLATION.........................22
READING LAMP
REMOVAL.............................22
INSTALLATION.........................23
VANITY LAMP
REMOVAL.............................24
INSTALLATION.........................24
LAMPS/LIGHTING - INTERIOR
SPECIFICATIONS
INTERIOR LAMPS
BULB APPLICATION TABLE
LAMP BULB
ABS LED
AIRBAG LED
ALARM SET LED
BRAKE SYSTEM
WARNINGLED
CONSOLE 194
CRUISE INDICATOR VFD*
DOME/RAIL LAMPS 578
DOOR AJAR INDICATOR LED
DOOR COURTESY
LAMP578
FRONT DOOR
COURTESY567
GLOVE BOX 194
HIGH BEAM INDICATOR LED
CLUSTER
ILLUMINATIONPC74
LIFTGATE 578
LAMP BULB
LIFTGATE AJAR LED
LOW FUEL INDICATOR LED
LOW WASHER FLUID
INDICATORLED
MIL LED
OIL INDICATOR LED
OVERHEAD CONSOLE
READINGPC579
PRNDL INDICATOR
(BASE CLUSTER)LED
PRNDL INDICATOR VFD
READING 578
SEAT BELT INDICATOR LED
TEMPERATURE
INDICATORLED
TIRE PRESSURE
WARNINGLED
TRAC OFF INDICATOR VFD*
VISOR VANITY 6501966
VOLTAGE INDICATOR LED
* VFD = VACUUM FLUORESCENT DISPLAY
8L - 20 LAMPS/LIGHTING - INTERIORRS

POWER SEAT SYSTEM
TABLE OF CONTENTS
page page
POWER SEAT SYSTEM
DESCRIPTION
POWER SEAT SYSTEM................31
MEMORY SYSTEM....................32
OPERATION
POWER SEAT SYSTEM................32
MEMORY SYSTEM....................33
DIAGNOSIS AND TESTING
POWER SEAT SYSTEM................33
MEMORY SYSTEM....................33
SEAT SWITCH
DESCRIPTION.........................34
OPERATION...........................34
DIAGNOSIS AND TESTING
DRIVER SEAT SWITCH.................34
REMOVAL.............................36INSTALLATION.........................36
MEMORY SWITCH
DESCRIPTION.........................36
OPERATION...........................36
DIAGNOSIS AND TESTING
MEMORY SWITCH....................37
REMOVAL.............................37
INSTALLATION.........................37
POWER SEAT TRACK
DESCRIPTION.........................37
OPERATION...........................38
DIAGNOSIS AND TESTING
POWER SEAT TRACK..................38
REMOVAL.............................38
INSTALLATION.........................39
POWER SEAT SYSTEM
DESCRIPTION
POWER SEAT SYSTEM
The power seat system option allows the driver
and front seat passenger to electrically adjust their
seating positions for optimum control and comfort.
The driver side power front seat can be adjusted in
eight different directions: up, down, front up, front
down, rear up, rear down, forward, rearward and
recliner forward and rearward. The passenger side
power front seat can be adjusted in four different
directions: forward, rearward and recliner forward
and rearward.
The power seat system receives battery current
through a 40 amp fuse in the Integrated Power Mod-
ule (IPM) and a 30 amp circuit breaker under the
seat so that the power seats remain operational,
regardless of the ignition switch position.
WARNING: SOME VEHICLES ARE EQUIPPED WITH
SEATBACK MOUNTED AIRBAGS (Fig. 1). BEFORE
ATTEMPTING TO DIAGNOSE OR SERVICE ANY
SEAT OR POWER SEAT SYSTEM COMPONENT
YOU MUST FIRST DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE CABLE. THEN WAIT TWO MIN-
UTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE BEFORE FURTHER SYSTEM SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO DO SO COULDRESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
The eight-way driver side power seat is also avail-
able with the heated seat and/or memory seat sys-
tem. The memory seat system automatically
positions the power seat for two different drivers.
Fig. 1 IDENTIFYING A SIDE AIRBAG EQUIPPED
SEAT
1 - AIRBAG LABEL
RSPOWER SEAT SYSTEM8N-31

self-resetting circuit breaker to protect them from
overload. However, consecutive or frequent resetting
of the circuit breaker must not be allowed to con-
tinue, or the motor may be damaged.
MEMORY SYSTEM
The Memory Seat Mirror Module (MSMM) receives
battery current through fuse #22 in the Integrated
Power Module (IPM) and the power seat system cir-
cuit breaker, located under the driver side front seat
near the rear edge of the seat cushion pan. The mem-
ory system does not operate with the Ignition-Off
Draw (IOD) fuse removed. The MSMM will drive a
maximum of 2 motors at a time in a given direction.
If conflicting directions are requested, the priority for
response will be approximately as follows:
²Seat Track Rearward or Forward
²Seat Front Down or Up
²Seat Rear Down or Up
²Recliner Rearward or Forward
The inputs from these switches to the MSMM is a
current limited battery source fed by the MSMM.
This protects the MSMM printed circuit board traces
from acting as fuses. All of these switch contact
inputs to the MSMM are normally closed to ground,
except when actuated.
For diagnosis of the MSMM, the Programmable
Communication Interface (PCI) data bus, or the other
electronic modules on the PCI data bus that provide
inputs and outputs for the memory system, the use of
a DRBIIItor equivalent scan tool and the proper
Diagnostic Procedures information is recommended.
ELECTRONIC VEHICLE INFORMATION CENTER
The Electronic Vehicle Information Center (EVIC)
serves as the user interface for the memory system.
It displays memory system status messages and pro-
vides the user with the means for enabling and dis-
abling the many customer programmable features
available on the vehicle, including those for the mem-
ory system.
(Refer to 8 - ELECTRICAL/OVERHEAD CON-
SOLE/ELECTRONIC VEHICLE INFO CENTER -
DESCRIPTION) for additional information on the
EVIC.
DIAGNOSIS AND TESTING
POWER SEAT SYSTEM
Following are tests that will help to diagnose the
hard wired components and circuits of the power seat
system. However, if the vehicle is also equipped with
the optional memory system, these tests may not
prove conclusive in the diagnosis of the driver side
power seat. In order to obtain conclusive testing ofthe driver side power seat with the memory system
option, the Programmable Communications Interface
(PCI) data bus network and all of the electronic mod-
ules that provide inputs to, or receive outputs from
the memory system components must be checked,
(Refer to 8 - ELECTRICAL/POWER SEATS - DIAG-
NOSIS AND TESTING).
WARNING: SOME VEHICLES ARE EQUIPPED WITH
SEATBACK MOUNTED AIRBAGS. BEFORE
ATTEMPTING TO DIAGNOSE OR SERVICE ANY
SEAT OR POWER SEAT SYSTEM COMPONENT
YOU MUST FIRST DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE CABLE. THEN WAIT TWO MIN-
UTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE BEFORE FURTHER SYSTEM SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO DO SO COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) If either power seat is completely inoperable,
check the power seat circuit breaker, located under
the trailing edge of the driver side power seat. If the
power seat circuit breaker is OK, continue to the
next step.
(2) Check for proper battery and ground connec-
tions at the power seat switch and/or memory seat
module. Repair any wiring as necessary.
(3) Check the power seat system wire harness con-
nections and pins to ensure proper circuit continuity
and ground paths.
MEMORY SYSTEM
In order to obtain conclusive testing of the memory
system, the Programmable Communications Interface
(PCI) data bus network and all of the electronic mod-
ules that provide inputs to, or receive outputs from
the memory system components must be checked.
The most reliable, efficient, and accurate means to
diagnose the driver side power seat with the memory
system option requires the use of a DRBIIItor
equivalent scan tool and the proper Diagnostic Proce-
dures information. The DRBIIItscan tool can pro-
vide confirmation that the PCI data bus is functional,
that all of the electronic modules are sending and
receiving the proper messages on the PCI data bus,
and that the memory system is receiving the proper
hard wired inputs and relaying the proper hard
wired outputs to perform its driver side power seat
functions.
(1) If the driver power seat exhibits an interrupted
or jerky motion, ensure the wire harness is connected
correctly. To verify the concern, obtain a DRB IIItor
equivalent scan tool and energize each axis one at a
time. If any axis stops in approximately 2 seconds
(without hitting the end of travel), the feedback for
RSPOWER SEAT SYSTEM8N-33
POWER SEAT SYSTEM (Continued)

upper half of the track unit. Each motor moves the
seat adjuster through a combination of worm-drive
gearboxes and screw-type drive units. The horizontal
adjustment motor moves the seat track in the for-
ward and aft directions. The recliner adjustment
motor moves the seat back in the forward and rear-
ward directions.
The power seat track unit cannot be repaired, and
is serviced only as a complete unit. If any component
in this unit is faulty or damaged, the entire power
seat track unit must be replaced.
OPERATION
When the power seat switch control knob or knobs
are actuated, a battery feed and a ground path are
applied through the switch contacts to the power seat
track or recliner adjuster motor. The selected
adjuster motor operates to move the seat track or
recliner through its drive unit in the selected direc-
tion until the switch is released, or until the travel
limit of the adjuster is reached. When the switch is
moved in the opposite direction, the battery feed and
ground path to the motor are reversed through the
switch contacts. This causes the adjuster motor to
run in the opposite direction.
No power seat switch should be held applied in any
direction after the adjuster has reached its travel
limit. The power seat adjuster motors each contain a
self-resetting circuit breaker to protect them from
overload. However, consecutive or frequent resetting
of the circuit breaker must not be allowed to con-
tinue, or the motor may be damaged.
DIAGNOSIS AND TESTING
POWER SEAT TRACK
WARNING: SOME VEHICLES ARE EQUIPPED WITH
SEATBACK MOUNTED AIRBAGS. BEFORE
ATTEMPTING TO DIAGNOSE OR SERVICE ANY
SEAT OR POWER SEAT SYSTEM COMPONENT
YOU MUST FIRST DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE CABLE. THEN WAIT TWO MIN-
UTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE BEFORE FURTHER SYSTEM SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO DO SO COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
Actuate the power seat switch to move the power
seat track adjusters in each direction. The power seat
track adjusters should move in each of the selected
directions. If a power seat track adjuster operates in
one direction only, move the adjuster a short distance
in the opposite direction and test again to be certainthat the adjuster is not at its travel limit. If the
power seat track adjuster still operates in one direc-
tion only, (Refer to 8 - ELECTRICAL/POWER
SEATS/DRIVER SEAT SWITCH - DIAGNOSIS AND
TESTING). If the power seat track adjuster does not
operate in more than one direction, perform the fol-
lowing tests.
TESTING POWER SEAT TRACK MOTORS
(1) Check the power seat circuit breaker under the
seat. If OK, go to Step 2. If not OK, replace the
faulty power seat circuit breaker.
(2) Check for battery voltage at the power seat cir-
cuit breaker under the seat. If OK, go to Step 3. If
not OK, repair the open fused B(+) circuit to the fuse
in the Integrated Power Module (IPM) as required.
(3) Remove the outboard seat cushion side cover,
(Refer to 23 - BODY/SEATS/SEAT CUSHION SIDE
COVERS - REMOVAL). Disconnect the wire harness
connector from the power seat switch. Check for bat-
tery voltage at the fused B(+) circuit cavity of the
power seat switch wire harness connector. If OK, go
to Step 4. If not OK, repair the open fused B(+) cir-
cuit to the power seat circuit breaker under the seat
as required.
(4) Check for continuity between the ground cir-
cuit cavity of the power seat switch wire harness con-
nector and a known good ground. There should be
continuity. If OK, go to Step 5. If not OK, repair the
open ground circuit as required.
(5) Test the power seat switch, (Refer to 8 - ELEC-
TRICAL/POWER SEATS/DRIVER SEAT SWITCH -
DIAGNOSIS AND TESTING). If the switch tests OK,
test the circuits of the power seat wire harness
between the inoperative power seat track adjuster
motor and the power seat switch for shorts or opens.
If the circuits check OK, replace the faulty power
seat track unit. If the circuits are not OK, repair the
power seat wire harness as required.
REMOVAL
WARNING: SOME VEHICLES ARE EQUIPPED WITH
SEATBACK MOUNTED AIRBAGS. BEFORE
ATTEMPTING TO DIAGNOSE OR SERVICE ANY
SEAT OR POWER SEAT SYSTEM COMPONENT
YOU MUST FIRST DISCONNECT AND ISOLATE THE
BATTERY NEGATIVE CABLE. THEN WAIT TWO MIN-
UTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE BEFORE FURTHER SYSTEM SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
AIRBAG SYSTEM. FAILURE TO DO SO COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
(1) Disconnect and isolate the battery negative
cable.
8N - 38 POWER SEAT SYSTEMRS
POWER SEAT TRACK (Continued)

RESTRAINTS
TABLE OF CONTENTS
page page
RESTRAINTS
DESCRIPTION..........................2
OPERATION............................4
WARNING
WARNINGS...........................5
DIAGNOSIS AND TESTING - AIRBAG SYSTEM . 6
STANDARD PROCEDURE
STANDARD PROCEDURE - HANDLING
AIRBAGS.............................6
STANDARD PROCEDURE - SERVICE
AFTER AN AIRBAG DEPLOYMENT.........7
BELT TENSION SENSOR
DESCRIPTION..........................8
OPERATION............................9
CHILD RESTRAINT ANCHOR
DESCRIPTION..........................9
OPERATION...........................10
CLOCKSPRING
DESCRIPTION.........................10
OPERATION...........................11
STANDARD PROCEDURE - CLOCKSPRING
CENTERING.........................11
REMOVAL.............................12
INSTALLATION.........................12
CURTAIN AIRBAG
DESCRIPTION.........................12
OPERATION...........................13
REMOVAL.............................14
INSTALLATION.........................16
DRIVER AIRBAG
DESCRIPTION.........................16
OPERATION...........................16
REMOVAL.............................17
INSTALLATION.........................18
IMPACT SENSOR
DESCRIPTION.........................18
REMOVAL.............................19
INSTALLATION.........................21
KNEE BLOCKER AIRBAG
DESCRIPTION.........................22
OPERATION...........................22
REMOVAL.............................23
INSTALLATION.........................23
OCCUPANT CLASSIFICATION MODULE
DESCRIPTION.........................25
OPERATION...........................25
REMOVAL.............................26
INSTALLATION.........................26OCCUPANT RESTRAINT CONTROLLER
DESCRIPTION.........................27
OPERATION...........................28
REMOVAL.............................29
INSTALLATION.........................29
PASSENGER AIRBAG
DESCRIPTION.........................30
OPERATION...........................30
REMOVAL.............................30
INSTALLATION.........................32
PASSENGER AIRBAG DISABLED INDICATOR
DESCRIPTION.........................33
OPERATION...........................33
REMOVAL.............................34
INSTALLATION.........................34
SEAT BELT BUCKLE - FRONT INBOARD
REMOVAL.............................35
INSTALLATION.........................35
SEAT BELT BUCKLE - FIRST ROW INBOARD -
QUAD BUCKET
REMOVAL.............................35
INSTALLATION.........................36
SEAT BELT BUCKLE - FIRST ROW - BENCH
REMOVAL.............................36
INSTALLATION.........................37
SEAT BELT BUCKLE - SECOND ROW
INBOARD - 50/50 BENCH
REMOVAL.............................37
INSTALLATION.........................38
SEAT BELT HEIGHT ADJUSTER-BOR
C-PILLAR
REMOVAL.............................38
INSTALLATION.........................38
SEAT BELT HEIGHT ADJUSTER KNOB
REMOVAL.............................38
INSTALLATION.........................38
SEAT BELT & RETRACTOR - OUTBOARD -
FRONT
REMOVAL.............................38
INSTALLATION.........................39
SEAT BELT & RETRACTOR - FIRST ROW -
OUTBOARD
REMOVAL.............................39
INSTALLATION.........................40
SEAT BELT BUCKLE - SECOND ROW - THREE
PASSENGER BENCH
REMOVAL.............................40
INSTALLATION.........................40
RSRESTRAINTS8O-1

SEAT BELT & RETRACTOR - SECOND ROW -
RIGHT OUTBOARD
REMOVAL.............................40
INSTALLATION.........................40
SEAT BELT & RETRACTOR - SECOND ROW -
RIGHT OUTBOARD WITH REAR HVAC - LWB
REMOVAL.............................41
INSTALLATION.........................41
SEAT BELT & RETRACTOR - SECOND ROW -
LEFT OUTBOARD
REMOVAL.............................42INSTALLATION.........................42
SEAT BELT TENSIONER
DESCRIPTION.........................43
OPERATION...........................43
SEAT WEIGHT BLADDER & PRESSURE
SENSOR
DESCRIPTION.........................43
OPERATION...........................44
RESTRAINTS
DESCRIPTION
This vehicle is equipped with a Frontal Impact Air-
bag System, which utilizes the driver/passenger air-
bags, two front impact sensors, and seat belt
tensioners located in the front seat belt buckles. This
system is designed to protect occupants in the event
of a front impact collision. These airbags are all ser-
viceable parts. The tensioners are integral to the
front seat belt buckles. If these pyrotechnics are
deployed or defective, they must be replaced.
Vehicles equipped with the Side Impact Airbag
System utilize a curtain airbag, three side impact
sensors, and the Occupant Restraint Controller
(ORC) to determine if the airbag should be deployed.
Following a side impact event where the side airbag
was deployed, the headliner as well as the curtain
airbag must be replaced.
The occupant restraints include both active and
passive types. Active restraints are those which
require the vehicle occupants to take some action to
employ, such as fastening a seat belt; while passive
restraints require no action by the vehicle occupants
to be employed.
ACTIVE RESTRAINTS
The active restraints include:
²Front Seat Belts- Both front seating positions
are equipped with three-point seat belt systems
employing a lower B-pillar mounted inertia latch-
type retractor, height-adjustable upper B-pillar
mounted turning loops, a fixed lower seat belt anchor
secured to the lower B-pillar, and a traveling end-re-
lease buckle secured to the inboard side of the seat
cushion frame. The driver side front seat belt buckle
includes an integral Hall-effect seat belt switch that
detects whether the driver side front seat belt has
been fastened.²Rear Seat Belts- Both outboard rear second
and third seating positions are equipped with three-
point seat belt systems. The outboard seating posi-
tion belts employ a lower C or D-pillar mounted
inertia latch-type retractor, a fixed position upper C
or D-pillar mounted turning loop, and a fixed lower
seat belt anchor secured to the inboard side of the
seat cushion frame.
²Child Restraint Anchors- Also equipped in
this vehicle are two, fixed-position, child seat upper
tether anchors located on the lower seat cushion, in
the rear of the lower seat cushion. There is one
anchor integral to the back of the third row seat back
panel, one on each seat back panel. Two lower second
row anchors are also provided for each rear outboard
seating position. The lower anchors are integral to
the seat cushion frame and are accessed from the
front of the second row seat where the seat back
meets the seat cushion.
PASSIVE RESTRAINTS
The passive restraints available for this model
include the following:
²Dual Front Airbags- Multistage driver. front
passenger, and driver knee blocker airbags are avail-
able for this model. This airbag system is a passive,
inflatable, Supplemental Restraint System (SRS) and
vehicles with this equipment can be readily identified
by the ªSRS - AIRBAGº logo molded into the driver
airbag trim cover in the center of the steering wheel
and also into the passenger airbag door on the
instrument panel above the glove box. Vehicles with
the airbag system can also be identified by the airbag
indicator, which will illuminate in the instrument
cluster for about seven seconds as a bulb test each
time the ignition switch is turned to the ON position.
A pyrotechnic-type seat belt tensioner is integral to
the driver and passenger front seat belt buckle of all
models equipped with dual front airbags.
8O - 2 RESTRAINTSRS

²Occupant Classification System- These
vehicles also include an Occupant Classification Sys-
tem (OCS) with components that are located on or in
the passenger front seat cushion. These components
include an Occupant Classification Module (OCM)
and a seat weight bladder and pressure sensor
assembly. In addition, this system includes a belt
tension sensor integral to the lower anchor of the
passenger side front seat belt. Vehicles equipped with
the OCS can be readily identified by a Passenger Air-
bag Disabled (PAD) indicator (Fig. 1) located in the
center stack on the instrument panel above HVAC
control head and radio.
²Curtain Airbags- Curtain airbags are avail-
able for this model when it is also equipped with
dual front airbags. This airbag system is a passive,
inflatable, Supplemental Restraint System (SRS) and
vehicles with this equipment can be readily identified
by a molded identification trim button with the ªSRS
- AIRBAGº logo (Fig. 2) located on the headliner
above each B-pillar.
This vehicle is equipped with a Frontal Impact Air-
bag System, which utilizes the driver/passenger air-
bags, driver knee blocker airbag, and seat belt
tensioners. This system is designed to protect occu-
pants in the event of a front impact collision. These
airbags and seat belt tensioners are all serviceable
parts. If these pyrotechnics are deployed or defective,
they must be replaced, as well as the OccupantRestraint Controller (ORC) must be diagnosed follow-
ing procedures outlined in the diagnostic information.
The Driver and Passenger Airbag System was
designed to reduce the likelihood of injury or death
in frontal collisions. Each separate system is supple-
mental (Fig. 2) orPassiveto the primary restraint
device, which are the seat belts.
²Airbag Indicator- The airbag indicator is inte-
gral to the Instrument Cluster, which is located on
the instrument panel in front of the driver.
²Belt Tension Sensor- Vehicles equipped with
the Occupant Classification System (OCS) include a
belt tension sensor. This sensor is integral to the pas-
senger side front seat belt lower anchor which is
secured to the floor, out board and rear of the front
passenger seat. -.....concealed beneath an access cover
on the seat belt assembly.
²Clockspring- The clockspring is located near
the top of the steering column, directly beneath the
steering wheel (Fig. 3).
²Curtain Airbag- A side curtain airbag is
located on each inside roof side rail above the head-
liner, and extends from the A-pillar to just beyond
the D-pillar.
²Driver Airbag- The driver airbag is located in
the center of the steering wheel, beneath the driver
airbag trim cover (Fig. 3).
²Front Impact Sensor- Two front impact sen-
sors are used on vehicles equipped with dual front
airbags, one left side and one right side. The sensors
are located on the rail tips, rearward of the bumper
attachments.
²Knee Blocker Airbag- The driver knee blocker
airbag is secured to the instrument panel behind the
steering column opening cover (Fig. 3).
Fig. 1 PAD INDICATOR
Fig. 2 SRS LOGO
Fig. 3 AIRBAG COMPONENT LOCATION -
INSTRUMENT PANEL
1 - DRIVER AIRBAG
2 - PASSENGER AIRBAG DISABLED (PAD) INDICATOR
3 - PASSENGER AIRBAG
4 - OCCUPANT RESTRAINT CONTROLLER (ORC)
5 - KNEE BLOCKER AIRBAG
RSRESTRAINTS8O-3
RESTRAINTS (Continued)

²Occupant Classification Module- Vehicles
equipped with the Occupant Classification System
(OCS) include an Occupant Classification Module
(OCM) which is secured to a stamped steel mounting
bracket on the underside of the passenger side front
seat cushion frame.
²Occupant Restraint Controller- The Occu-
pant Restraint Controller (ORC) is also sometimes
referred to as the Airbag Control Module (ACM). The
ORC is located on a mount on the floor transmission
tunnel just underneath the instrument panel center
stack (Fig. 3).
²Passenger Airbag- The passenger airbag is
located on the instrument panel, beneath the instru-
ment panel top pad and above the glove box on the
passenger side of the vehicle (Fig. 3).
²Passenger Airbag Disabled (PAD) Indicator
- Vehicles equipped with the Occupant Classification
System (OCS) include a passenger airbag disabled
(PAD) indicator which is located in the instrument
panel center stack (Fig. 3).
²Passenger Knee Blocker- The passenger knee
blocker is a structural reinforcement that is integral
to and concealed within the glove box door (Fig. 3).
²Seat Belt Tensioner- A seat belt tensioner is
integral to both front seat belt buckles. The seat belt
buckles are secured to the inner seat frame sides,
beneath a cushion trim panel.
²Seat Weight Bladder and Pressure Sensor
Assembly- Vehicles equipped with the Occupant
Classification System (OCS) include a seat weight
bladder that is sandwiched between an insulator pad
on the top of the passenger side front seat pan and
the seat cushion foam padding. A short hose connects
the bladder to a pressure sensor which is secured to
the Occupant Classification Module (OCM) mounting
bracket on the underside of the passenger side front
seat cushion frame.
²Side Impact Sensors- Six side impact sensors
are used on vehicles equipped with the curtain air-
bags, three left side and three right side. The first
row side impact sensor is located in the B-pillar, just
above the front seat belt retractor. The second row
side impact sensor is located in the sliding side door
track opening, just in front of the C-pillar. The third
row side impact sensor is located behind the quarter
trim panel, above the rear tire wheel well, between
the C and D-pillars.
The ORC, the OCM, and the cluster each contain a
microprocessor and programming that allow them to
communicate with each other using the Programma-
ble Communications Interface (PCI) data bus net-
work. This method of communication is used by the
ORC for control of the airbag indicators.OPERATION
ACTIVE RESTRAINTS
The primary passenger restraints in this or any
other vehicle are the seat belts and child restraint
anchors. Seat belts and child restraint anchors are
referred to as an active restraint because the vehicle
occupants are required to physically fasten and prop-
erly adjust these restraints in order to benefit from
them. See the owner's manual in the vehicle glove
box for more information on the features, use and
operation of all of the active restraints.
PASSIVE RESTRAINTS
The passive restraints are referred to as a supple-
mental restraint system because they were designed
and are intended to enhance the protection for the
occupants of the vehicleONLYwhen used in con-
junction with the seat belts. They are referred to as
passive restraints because the vehicle occupants are
not required to do anything to make them operate;
however, the vehicle occupants must be wearing their
seat belts in order to obtain the maximum safety
benefit from the supplemental restraint system.
The supplemental restraint system electrical cir-
cuits are continuously monitored and controlled by a
microprocessor and software contained within the
Occupant Restraint Controller (ORC). An airbag indi-
cator in the ElectroMechanical Instrument Cluster
(EMIC) illuminates for about seven seconds as a bulb
test each time the ignition switch is turned to the
ON or START positions. Following the bulb test, the
airbag indicator is turned ON or OFF by the ORC to
indicate the status of the supplemental restraint sys-
tem. If the airbag indicator comes ON at any time
other than during the bulb test, it indicates that
there is a problem in the supplemental restraint sys-
tem electrical circuits. Such a problem may cause air-
bags not to deploy when required, or to deploy when
not required.
Deployment of the supplemental restraints
depends upon the angle and severity of an impact.
Deployment is not based upon vehicle speed; rather,
deployment is based upon the rate of deceleration as
measured by the forces of gravity (G force) upon the
impact sensors. When an impact is severe enough,
the microprocessor in the ORC signals the inflator of
the appropriate airbag units to deploy their airbag
cushions. The front seat belt tensioners are provided
with a deployment signal by the ORC in conjunction
with the front airbags. During a frontal vehicle
impact, the knee blockers work in concert with prop-
erly fastened and adjusted seat belts to restrain both
the driver and the front seat passenger in the proper
position for an airbag deployment. The knee blockers
also absorb and distribute the crash energy from the
8O - 4 RESTRAINTSRS
RESTRAINTS (Continued)

driver and the front seat passenger to the structure
of the instrument panel (Refer to 8 - ELECTRICAL/
RESTRAINTS/KNEE BLOCKER AIRBAG -
DESCRIPTION). The seat belt tensioners remove the
slack from the front seat belts to provide further
assurance that the driver and front seat passenger
are properly positioned and restrained for an airbag
deployment.
When the ORC monitors a problem in any of the
dual front airbag system circuits or components,
including the seat belt tensioners, it stores a Diag-
nostic Trouble Code (DTC) in its memory and sends
an electronic message to the EMIC to turn on the
airbag indicator. Proper testing of the supplemental
restraint system components, the Programmable
Communications Interface (PCI) data bus, the elec-
tronic message inputs to and outputs from the EMIC
or the ORC, as well as the retrieval or erasure of a
DTC from the ORC or the EMIC requires the use of
a scan tool. Refer to the appropriate diagnostic infor-
mation.
OCCUPANT CLASSIFICATION SYSTEM
The Occupant Classification System (OCS) auto-
matically suppresses or enables passenger airbag and
seat belt tensioner operation based upon whether or
not the passenger side front seat is occupied and, if
the seat is occupied, classifies the size of the occu-
pant and whether the seat is occupied by a child
seat.
The OCS has an Occupant Classification Module
(OCM) that monitors inputs from the seat weight
bladder pressure sensor under the passenger side
front seat cushion and from the belt tension sensor
on the passenger side front seat belt lower anchor.
Based upon those inputs the microprocessor within
the OCM classifies the occupant of the passenger
side front seat. The OCM then sends electronic occu-
pant classification messages to the ORC. The micro-
processor and programming of the ORC uses these
occupant classification messages to determine
whether to enable or disable the deployment circuits
for the passenger airbag and seat belt tensioner.
The OCS electrical circuits and components are
continuously monitored by the OCM, and the OCM is
continuously monitored by the ORC. A passenger air-
bag ON/OFF indicator is located in the instrument
panel center stack area. This indicator receives bat-
tery current whenever the ignition switch is in the
ON or START positions, and illuminates only when
the ORC pulls the indicator control circuit to ground.
The indicator illuminates for about seven seconds as
a bulb test each time the ignition switch is turned to
the ON or START positions. Following the bulb test,
the indicator is turned ON or OFF by the ORC based
upon the electronic occupant classification messagesreceived from the OCM. This indicator is illuminated
whenever the passenger airbag and seat belt ten-
sioner operation has been suppressed, and is turned
OFF whenever they are enabled or when the passen-
ger seat is classified as empty.
When the OCM monitors a problem in any of the
OCS circuits or components, it stores a fault code or
DTC in its memory circuit and sends an electronic
message to the ORC. The ORC then sends an elec-
tronic message to the EMIC to turn ON the airbag
indicator. If for any reason the OCM is unable to
classify the occupant it sends an electronic message
to the ORC, and the ORC suppresses passenger air-
bag and seat belt tensioner operation. Proper testing
of the OCS components, the Programmable Commu-
nications Interface (PCI) data bus, the electronic
message inputs to and outputs from the OCM, the
EMIC or the ORC, as well as the retrieval or erasure
of a DTC's, requires the use of a scan tool. Refer to
the appropriate diagnostic information.
WARNING
WARNINGS
Disconnect and isolate the battery negative
cable before beginning any airbag system com-
ponent diagnosis, testing, removal, or installa-
tion procedures. Allow system capacitor to
discharge for two minutes before beginning any
component testing or service. This will disable
the airbag system. Failure to disconnect the
battery negative cable may result in accidental
airbag deployment, personal injury, or death.
Do not place an intact undeployed airbag
face down on a solid surface. The airbag will
propel into the air if accidentally deployed and
may result in personal injury or death.
When carrying or handling an undeployed
airbag, the trim side (face) of the airbag should
be pointing towards the body to minimize pos-
sibility of injury if accidental deployment
occurs. Failure to do this may result in per-
sonal injury or death.
Replace airbag system components with
Mopartreplacement parts. Substitute parts
may appear interchangeable, but internal dif-
ferences may result in inferior occupant protec-
tion. Failure to do so may result in occupant
personal injury or death.
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 experienced. If nasal or throat irritation is
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