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RESTRAINT SYSTEMS 8M - 1
RESTRAINT SYSTEMS
CONTENTS
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AIR BAG SYSTEM ........................
AIR BAG SYSTEM GENERAL INFORMATION . . .
AIR BAG SYSTEM SERVICE PROCEDURES ....
AIR BAG SYSTEM
WARNING: THIS SYSTEM IS A SENSITIVE, COM-
PLEX ELECTRO-MECHANICAL UNIT. BEFORE AT-
TEMPTING TO DIAGNOSE, REMOVE OR INSTALL
THE AIR BAG SYSTEM COMPONENTS YOU MUST
FIRST DISCONNECT AND ISOLATE THE BATTERY
NEGATIVE (GROUND) CABLE. FAILURE TO DO SO
COULD RESULT IN ACCIDENTAL DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
WHEN AN UNDEPLOYED AIR BAG ASSEMBLY IS
TO BE REMOVED FROM THE STEERING WHEEL,
DISCONNECT BATTERY NEGATIVE CABLE AND
ISOLATE. ALLOW SYSTEM CAPACITOR TO DIS-
CHARGE FOR
MINUTES THEN BEGIN AIR BAG
REMOVAL.
SPECIFIED RE-
PLACEMENT PARTS ONLY. SUBSTITUTE PARTS
MAY APPEAR INTERCHANGEABLE, BUT INTERNAL
DIFFERENCES MAY RESULT IN INFERIOR OCCU-
PANT PROTECTION.
THE FASTENERS, SCREWS, AND BOLTS, ORIGI-
NALLY USED FOR THE AIR BAG COMPONENTS,
HAVE SPECIAL COATINGS AND ARE SPECIFICALLY
DESIGNED FOR THE AIR BAG SYSTEM. THEY
MUST NEVER BE REPLACED WITH ANY SUBSTI-
TUTES. ANYTIME A NEW FASTENER IS NEEDED,
REPLACE WITH THE CORRECT FASTENERS PRO-
VIDED IN THE SERVICE PACKAGE OR FASTENERS
LISTED IN THE PARTS BOOK.
T
To inspect system use Passive Restraint System
Diagnostic Procedures Manual.
If the Air Bag Module Assembly is defective and
non-deployed, refer to Chrysler Motors current return
list for proper handling procedures.
AIR BAG SYSTEM GENERAL INFORMATION
INDEX
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Air Bag Module ..........................
Air Bag System Check .....................
Air Bag System Schematic ..................
Clean Up Procedure ......................
Clockspring .............................
Deployed Module .........................
Diagnostic Module ........................
Front Impact Sensors ......................
Handling Undeployed Module .................
Service of Deployed Air Bag ..................
Storage ................................
AIR BAG MODULE The air bag module is the most
visible part of the system. It contains the air bag
cushion and its supporting components. The air
bag module contains a housing to which the
cushion and inflator are attached and sealed.
The inflator assembly is mounted to the back of the
module. It seals the hole so it can discharge the gas it
produces directly into the cushion when supplied with
the proper electrical signal. A protective cover is fitted
to the front of the air bag module and forms a decora-
tive cover in the center of the steering wheel. The air
bag module is mounted directly to the steering wheel.
FRONT IMPACT SENSORS
The passive restraint air bag system is a safety
device designed to protect the driver from serious
injury, caused by a frontal impact of the vehicle.
The impact sensors provide verification of the direc-
tion and severity of the impact. Three impact sensors
are used. One is called a safeing sensor. It is
WARNING: REPLACE AIR BAG SYSTEM COMPO-
NENTS WITH CHRYSLER MOPAR
 8M - 2 RESTRAINT SYSTEMS
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located inside the diagnostic module which is under
the center console or park brake cover. The other two
sensors are mounted on the radiator closure panel on
the left and right side of the vehicle.
The impact sensors are threshold sensitive switches
that complete an electrical circuit when an impact
provides a sufficient G force to close the switch. The
sensors are calibrated for the specific vehicle and
react to the severity and direction of the impact.
CLOCKSPRING
The clockspring is mounted on the steering column
behind the steering wheel. It is used to maintain a
continuous electrical circuit between the wiring har-
ness and the driver’s air bag module. This assembly
consists of a flat, ribbon-like electrically conductive
tape which winds and unwinds with the steering
wheel rotation.
Fig. 1 Wear Safety Glasses and Rubber Gloves
If you find that the clean up is irritating your skin,
run cool water over the affected area. Also, if you
experience nasal or throat irritation, exit the vehicle
for fresh air until the irritation ceases. If irritation
continues, see a physician.
DIAGNOSTIC MODULE
The Air Bag System Diagnostic Module (ASDM), con-
tains the safeing sensor, and monitors the system to
determine the readiness of the system. The ASDM con-
tains on-board diagnostics, and will illuminate the Air
bag warning light in the cluster when a fault occurs.
CLEAN UP PROCEDURE
Begin the clean up by putting tape over the air bag
exhaust vent (Fig. 2) so that no additional powder
will find its way into the vehicle interior. Then re-
move the air bag and air bag module from the vehicle.
STORAGE
The air bag module must be stored in its original
special container until used for service. Additionally, it
must be stored in a clean, dry environment, away from
sources of extreme heat, sparks, and sources of high
electrical energy. Always place or store the module on a
surface with the trim cover facing up to minimize move-
ment in case of accidental deployment.
HANDLING UNDEPLOYED MODULE
At no time should any source of electricity be permit-
ted near the inflator on the back of the module. When
carrying an undeployed module, the trim cover should be
pointed away from the body to minimize injury in the
event of accidental deployment. In addition, if the mod-
ule is placed on a bench or other surface, the plastic trim
cover should be face up to minimize movement in case of
accidental deployment.
WARNING: WHEN A STEERING COLUMN HAS AN
AIR BAG MODULE ATTACHED, NEVER PLACE THE
COLUMN ON THE FLOOR OR OTHER SURFACE
WITH THE STEERING WHEEL OR MODULE FACE
DOWN.
Fig. 2 Seal the Air Bag Exhaust Vents
Use a vacuum cleaner to remove any residual pow-
der from the vehicle interior. Work from the outside
in as you do, so that you avoid kneeling or sitting on
uncleaned area.
Be sure to vacuum the heater and A/C outlets as
well (Fig. 3). In fact it’s a good idea to run the blower
on low and to vacuum up any powder expelled from
the plenum. You may need to vacuum the interior of
the car a second time to recover all of the powder.
DEPLOYED MODULE
The vehicle interior will contain sodium hydroxide
power, a byproduct of air bag deployment. Since this
powder can irritate the skin, eyes, nose or throat, be
sure to wear safety glasses, rubber gloves and long
sleeve shirt during clean up (Fig. 1).
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RESTRAINT SYSTEMS 8M - 3
Fig. 3 Vacuum Heated and A/C Outlets
AIR BAG SYSTEM CHECK
(1) Be sure battery negative cable is disconnected.
(2) Connect DRB II to ASDM diagnostic 6-way con-
nector. Located under the right front seat at the
forward left corner of the seat riser, under the carpet.
(3) From passenger side of vehicle, turn the igni-
tion key to ON position. Exit vehicle with DRB II.
Use the latest version of the proper cartridge.
(4) After checking that no one is inside the vehicle,
reconnect the negative battery terminal.
(5) Using the DRB II, read and record active fault
data.
(6) Read and record any stored faults.
(7) Refer to the Diagnostic Test Manual if any
faults are found in steps 5 or 6.
(8) Erase stored faults if there are no active fault
codes. If problems remain, fault codes will not erase.
(9) With the ignition key in the ON position, make
sure no one is in the vehicle.
(10) From the passenger side of vehicle, turn the
ignition key to OFF then ON and observe the instru-
ment cluster air bag light. It should go on for 6 to 8
seconds, then go out; indicating system is functioning
normal.
If air bag warning light either fails to light, or
goes on and stays on, there is a system malfunc-
tion. Refer to the Passive Restraint Diagnostic
Test Manual to diagnose the problem.
Place the deployed bag and module in your vehicu-
lar scrap pile.
SERVICE OF DEPLOYED AIR BAG
Any vehicle which is to be returned to use after an
air bag deployment, must have the air bag module
and clockspring replaced. These are one-time compo-
nents and cannot be reused. Other air bag system
components are replaced as required by extent of
damage.
AIR BAG SYSTEM SCHEMATIC
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AIR BAG SYSTEM SERVICE PROCEDURES
INDEX
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page
Air Bag Module ..........................
Air Bag System Diagnostic Module (ASDM) ......
Clockspring .............................
Clockspring Centering Procedure ..............
Impact Sensors ..........................
Steering Wheel ..........................
AIR BAG MODULE
INSTALLATION
(1) Connect clockspring wiring connector to the
module, by pressing straight in on the connector. The
connector should latch securely beneath module lock-
ing clip to assure positive connection.
(2) Install 4 nuts and torque to 9 to 11 N
WARNING: BEFORE BEGINNING ANY AIR BAG SYS-
TEM REMOVAL OR INSTALLATION PROCEDURES,
REMOVE AND ISOLATE THE BATTERY NEGATIVE (-)
CABLE FROM THE VEHICLE BATTERY. THIS IS THE
ONLY SURE WAY TO DISABLE THE AIR BAG SYS-
TEM. FAILURE TO DO THIS COULD RESULT IN AC-
CIDENTAL AIR BAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
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m (80 to
100 in. lbs.).
(3) Do not connect negative battery cable. Refer to
Air Bag System Check for proper procedure.
IMPACT SENSORS
REMOVAL
When removing a deployed module, rubber gloves,
eye protection and long sleeve shirt should be worn.
There may be deposits on the surface which could
irritate the skin and eyes in large doses.
(1) Disconnect battery negative cable and isolate.
(2) Remove 4 nuts attaching air bag module from
the back side of steering wheel (Fig. 1).
WARNING: BEFORE BEGINNING ANY AIR BAG SYS-
TEM REMOVAL OR INSTALLATION PROCEDURES,
REMOVE AND ISOLATE THE BATTERY NEGATIVE (-)
CABLE FROM THE VEHICLE BATTERY. THIS IS THE
ONLY SURE WAY TO DISABLE THE AIR BAG SYS-
TEM. FAILURE TO DO THIS COULD RESULT IN AC-
CIDENTAL AIR BAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
The impact sensors are located on the front
wheelhouse extensions behind the grille open-
ing reinforcement.
REMOVAL
(1) Disconnect battery negative cable and isolate.
(2) Remove the 3 screws and the grille (Fig. 2) from
the grille opening reinforcement (GOR).
Fig. 1 Air Bag Module
(3) Lift module, and disconnect electrical connector
by spreading apart the external latching arms and
prying upward on the connector.
(4) Remove module.
(5) If replacing a deployed module, the clockspring
must also be replaced. Refer to clockspring Removal
and Installation for proper procedure.
Fig. 2 Grille Removal
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RESTRAINT SYSTEMS 8M - 5
(3) Remove turn signals, side markers and head-
lamps. Refer to Group 8L - Lamps for procedures.
(4) Remove 6 retainers at front fascia (Fig. 3).
(5) Remove 3 push-in retainers at each front wheel
well (Fig. 4).
(6) Slide fascia off retainer pegs at side of lower
crossmember. Using a small screwdriver, pull up on
locating tangs under turn signal mounting location.
(7) Remove fascia from lower crossmember (Fig. 3).
Fig. 5 Impact Sensor (Typical)
Fig. 3 Lower Fascia Removal
Fig. 6 Impact Sensor Connector
(3) Install fascia and grille by reversing the re-
moval procedures.
(4) Do not connect negative battery cable. Refer to
Air Bag Systems Check for proper procedure.
AIR BAG SYSTEM DIAGNOSTIC MODULE (ASDM)
Fig. 4 Wheel Well Retainers
WARNING: THE ASDM CONTAINS ONE OF THE
IMPACT SENSORS WHICH ENABLE THE SYSTEM
TO FIRE THE AIR BAG. TO AVOID ACCIDENTAL
DEPLOYMENT, NEVER CONNECT ASDM ELECTRI-
CALLY TO THE SYSTEM UNLESS IT IS BOLTED TO
VEHICLE. BEFORE BEGINNING ANY AIR BAG SYS-
TEM REMOVAL OR INSTALLATION PROCEDURES,
REMOVE AND ISOLATE THE BATTERY NEGATIVE (-)
CABLE FROM THE VEHICLE BATTERY. THIS IS THE
ONLY SURE WAY TO DISABLE THE AIR BAG SYS-
TEM. FAILURE TO DO THIS COULD RESULT IN AC-
CIDENTAL AIR BAG DEPLOYMENT, AND POSSIBLE
PERSONAL INJURY.
(8) Disconnect impact sensor electrical connector.
(9) Remove 3 screws holding sensor to front wheel-
house extension. Remove sensor (Fig. 5).
(10) Unplug connector from sensor and remove sen-
sor (Fig. 6).
INSTALLATION
(1) Mount sensor (arrow pointed forward) using 3
screws provided with new sensor. Torque screws to 4
to5N
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m (35 - 45 in. lbs.).
(2) Connect sensor wiring lead from harness to con-
nector on body of sensor.
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