
SRS - Air Bag Modules and Clock Spring52B-57
AF"PASSENGER’S AIR BAG MODULE REMOVAL
Insert the screwdriver ( - ) into the position specified in the
figure and lift the screwdriver upward to release the pawls
engaged, and then remove the passenger’s air bag module.
Caution
1. When the passenger’s air bag module is removed,
do not damage the engagement of the pawls.
2. The removed passenger’s air bag module should be
stored in a clean, dry place with facing the deployment
surface facing up.
INSTALLATION SERVICE POINTS
"AAPRE-INSTALLATION INSPECTION
1. Pre-installation inspection is carried out even if installing
a new air bag module or clock spring. (Refer to P.52B-59.)
Caution
A used air bag module must be discarded after
deoloyment according to the specified procedure.
(Refer to P.52B-64.)
2. Connect the negative ( - ) terminal of the battery.
3. Connect the MUT-II to the diagnosis connector (16 pin).
Caution
Connection and disconnection of the MUT-IImust
be carried out after turning the ignition switch to the
LOCK (OFF) position.
4. Turn the ignition switch to ON.
5. Check that there is no abnormality except for open circuit
in the air bag module after reading diagnostic codes.
6. Turn the ignition switch to LOCK (OFF) position.
7. Release the negative ( - ) terminal cable of the battery
and wrap a tape around it for insulation.
Caution
Wait for at least 60 seconds after disconnecting the
negative ( - ) battery cable before starting any
operation. (Refer to P.52B-3.)
"BACLOCK SPRING INSTALLATION
1. Check that the steering wheel is positioned in the forward
direction.
2. Install the column switch to the clock spring after centering
of the clock spring is carried out as follows.
Centering of the clock spring
After turning the clock spring clockwise fully, turning approximately
3 rounds in the opposite direction, and align mating marks.
Caution
If centering of the clock spring is not properly done, the
SRS air bag system does not function normally due to
possible malfunctions that the steering wheel may not turn
in the way or cables in the clock spring may be torn.
Mating marks

SRS - Air Bag Modules and Clock Spring52B-58
"CASTEERING WHEEL/STEERING WHEEL - AIR BAG
MODULE ASSEMBLY INSTALLATION
1. After checking that centering of the clock spring has been
done, install the steering wheel or the steering wheel - air
bag module assembly.
Caution
Do not engage the harness of the clock spring when
installing the steering wheel or the steering wheel - air
bag module assembly.
2. After installation, check that no abnormalities occur when
the steering wheel is fully turned to the left or the right.
"DAPOST-INSTALLATION INSPECTION
1. Check that no abnormal noise or improper operation can
be caused by rotating the steering wheel in left and right
directions slightly.
(driver’s air bag module, clock spring)
2. Turn the ignition switch to the ON position.
3. Check that the SRS warning lamp illuminates for 6 to
8 seconds and goes out.
4. Carry out troubleshooting if the lamp does not go out.
(Refer to P.52-6.)
SRS warning lamp

SRS - Air Bag Modules and Clock Spring52B-59
INSPECTION
DRIVER’S AND PASSENGER’S AIR BAG MODULE
INSPECTION
If any malfunction is found in the following inspection, replace
the air bag module(s) with new one(s).
Discard the old one(s) after deployment as specified in the
service procedure. (Refer to P.52B-64.)
Caution
Never measure circuit resistance in the air bag modules
(squib) even with the specified tester. Measuring the
circuit resistance with a tester causes accidental air bag
deployment due to current that flows or static, resulting in
serious personal injury.
1. Check the cover for dents, cracks or deformation.
2. Check the connectors for damage, terminals for
deformation, and harness for binds.
3. Check the air bag inflator cases for dents, cracks or
deformation.
4. With air bag module installed
Caution
If dents, cracks, deformation, or rust are present in
the air bag module(s), replace with new one(s).
Discard the old one(s) as specified in the service
procedure. (Refer to P.52B-64.)
CLOCK SPRING CHECK
If any malfunction is found in the following inspections, replace
the clock spring with a new one.
1. Check the connectors and protective tubes for damage,
and terminals for deformation.
2. Visually check the case for damage.
3. Refer to that the clock spring has continuity between
connector No.2 and terminal No.4 of connector No.1.Inflator
Connector
Connector
Steering
wheel - driver’s
air bag module
assembly
Connector Inflator case
Protective tubes Case
1
2

SRS -AirBagModuleandSeatBeltPre-tensioner
Disposal Procedures52B-68
(5) Close all the doors with the windows fully closed and
put a cover over the vehicle to minimize report.
Caution
The cover is required as the glass, if already
damaged, may break.
(6) Separate the deployment harnesses as far from the
vehicle as possible and connect to the terminals of
the battery removed from the vehicle. Then deploy.
Caution
1) Before operating the seat belt pre-tensioner,
see that no one is in or near the vehicle.
2) The operation makes the insulator of the seat
belt pre-tensioner very hot. Before handling
the inflator, wait more than 30 minutes for
cooling.
3) If the seat belt pre-tensioner fails to operate
although the procedure is respected, do not go
near the seat belt pre-tensioner. Contact your
local distributor.
(7) Discard the operated seat belt pre-tensioner accord-
ing to Disposal Procedure. (Refer to P.52B-75.)
DEPLOYMENT OUTSIDE THE VEHICLE
Caution
1. Carry out air bag deployment or seat belt pre-tensioner
operation on large flat place at least 6 m away from any
object or person.
2. Avoid a strong wind weather when carrying out
deployment or operation outside the vehicle. Ignite the
air bag at a place upwind from the air bag module and
the seat belt pre-tensioner even in a breeze weather.
1. Disconnect the negative ( - ) and positive (+) battery cables
from the battery terminals, and then remove the battery
from the vehicle.
Caution
Wait at least 60 seconds before any further job after the
disconnection of the battery cables. (Refer to P.52B-3.)
2. Carry out deployment of the air bag module and operation
of the seat belt pre-tensioner according to the following
procedure.
Driver’s side air bag module
(1) Remove the driver’s air bag module from the vehicle.
(Refer to P.52B-52.)
Caution
Once disconnected, both electrodes of the driver’s air
bag module connector short automatically to prevent
accidental deployment caused by static etc. Still, in
consideration of the accidental deployment, store the
air bag module on flat place with deployment surface
facing up. Also, do not put anything on it.
Cover
Deployment
harnesses

SRS -AirBagModuleandSeatBeltPre-tensioner
Disposal Procedures52B-69
(2) Connect deployment harnesses longer than 6 m to
each SRS air bag adapter harness and insulate the
connections with plastic tape.
Also, connect the deployment harness in the other
ends to connect (short-circuit). This prevents the
driver’s air bag module from accidental deployment
caused by static and etc.
(3) Touch the vehicle’s body with bare hands to discharge
static in you.
Caution
Never fail to do Step (3) in order to prevent
accidental deployment caused by static.
(4) Install a nut to the bolt behind the driver’s air bag
module and tie thick wire there for securing.
(5) Route the deployment harnesses connected to the
driver’s air bag module beneath an old tyre and wheel
assembly. Then, using the wire tied to the bolt, secure
the driver’s air bag module to the tyre and wheel
assembly with the deployment surface facing up.
(6) Place three old tyres without wheels on the tyre
secured with the driver’s air bag module.
SRS air bag
adapter harness
MR203491 or
MB628919Deployment
harnessShort-circuited
6 m or longer
Insulation tape
Driver’s air bag module
Deployment
harnesses
Tyres without wheels
Deployment harnesses

SRS -AirBagModuleandSeatBeltPre-tensioner
Disposal Procedures52B-70
(7) Separate the deployment harnesses as far from the
driver’s side air bag module as possible and connect
to the terminals of the battery removed from the
vehicle. Then deploy.
Caution
1) Before the deployment, see that no one is near
around the driver’s air bag module.
2) The deployment makes the inflator of the
driver’s air bag very hot. Before handling the
inflator, wait more than 30 minutes for cooling.
3) If the driver’s air bag module fails to deploy
although the procedure is respected, do not go
near the module. Contact your local
distributor.
(8) Discard the deployed air bag module as specified
in Deployed Air Bag Module Disposal Procedures.
(Refer to P.52B-75.)
Driver’s side air bag module
(1) Remove the steering wheel - air bag module assembly
from the vehicle. (Refer to P.52B-52.)
Caution
Once disconnected, both electrodes of the driver’s
air bag module connector short automatically to
prevent accidental deployment caused by static
etc. Still, in consideration of the accidental
deployment, store the air bag module on flat place
with deployment surface facing up. Also, do not
put anything on it.
(2) Prepare two deployment harnesses longer than 6 m
for deployment and connect the terminals in one end
to short-circuit. This is to prevent accidental
deployment caused by static etc.
(3) Touch the vehicle’s body with bare hands to discharge
static in you.
Caution
Never fail to do Step (3) in order to prevent
accidental deployment caused by static.
Deployment harnesses
Shorted Deployment harnesses
6 m or longer

SRS -AirBagModuleandSeatBeltPre-tensioner
Disposal Procedures52B-71
(4) Release the secured connector of the steering
wheel - driver’s air bag module assembly to cut off
the connector from the harness with a nipper and
etc. Connect deployment harnesses to each of two
separated harnesses and cover the area with
insulation tape.
(5) Use a rope to tie the steering wheel - driver’s air bag
module assembly to secure old tyres with wheels.
(6) Route the deployment harness connected to driver’s
air bag module beneath old tyres with wheels. Then,
secure the steering wheel - driver’s air bag module
assembly with the deployment surface facing up.
(7) Place three old tyres without wheels on the tyre
secured with the driver’s air bag module.
(8) Separate the deployment harnesses as far from the
driver’s side air bag module as possible and connect
to the terminals of the battery removed from the
vehicle. Then deploy.
Caution
1) Before the deployment, see that no one is near
around the driver’s air bag module.
2) The deployment makes the inflator of the
driver’s air bag very hot. Before handling the
inflator, wait more than 30 minutes for cooling.
3) If the driver’s air bag module fails to deploy
although the procedure is respected, do not go
near the module. Contact your local
distributor.
(9) Discard the deployed air bag module as specified
in Deployed Air Bag Module Disposal Procedures.
(Refer to P.52B-75.)Deployment
harness
Short-circuited area Steering wheel - driver’s air bag
module assembly
Insulation tape
Steering wheel - driver’s air bag module assembly
Deployment
harness
Tyres without wheels
Deployment harnesses
Deployment harnesses

SRS -AirBagModuleandSeatBeltPre-tensioner
Disposal Procedures52B-72
Front passenger’s air bag module
(1) Remove the front passenger’s air bag module from
the vehicle. (Refer to P.52B-52.)
Caution
Once disconnected, both electrodes of the front
passenger’s air bag module connector short
automatically to prevent accidental deployment
caused by static etc. Still, in consideration of the
accidental deployment, store the air bag module
on flat place with deployment surface facing up.
Also, do not put anything on it.
(2) Connect deployment harness 6 m or longer with the
SRS air bag adapter harness respectively. Insulate
the connection with tape.
Also, connect the other ends of the deployment
harness each other to short, thereby preventing the
front passenger’s air bag from accidental deployment
caused by static etc.
(3) Route the SRS air bag adapter harness with the
deployment harnesses beneath an old tyre and wheel
assembly. Then, connect the harnesses to the front
passenger’s air bag module.
(4) Route a thick wire through the holes in the front
passenger’s air bag module bracket. With the
deployment surface facing up, secure the front
passenger’s air bag module to the old tyre and wheel
assembly.
Caution
1) The adapter harness below the wheel should
be loose. If it is too tight, the reaction when the
air bag deploys could damage the adapter
harness.
2) Place the connector of the SRS air bag adapter
harness so that it is not clamped by the tyre at
deployment.
(5) Put three old tyres without wheels on the tyre secured
to the front passenger’s air bag module. Secure all
the tyres with ropes (4 locations).
NOTE
The tyres must be bound because the passenger’s
air bag inflates more than the driver’s air bag.
SRS air bag
adapter
harness
MR686560Shorted
6 m long
or more Insulation tape
Deployment
harnesses
Front passenger’s air bag module
Deployment
harnesses
Tyres without wheels
Deployment harnesses