steering wheel MITSUBISHI LANCER EVOLUTION 2007 Service Manual Online

SRS - Individual Component Service/Warning/Caution Labels52B-49
INDIVIDUAL COMPONENT SERVICE
If the SRS components and seat belt with pre-tensioner are to be removed or replaced as a result of
maintenance, troubleshooting etc., follow the service procedures that follow.
Caution
1. SRS components and seat belt with pre-tensioner should not be subjected to heat, so remove
the SRS-ECU, driver’s air bag module, steering wheel -air bag module,front
passenger’s air bag module, clock spring, and seat belt with pre-tensioner before drying or
baking the vehicle after painting.
DFront impact sensor, SRS-ECU, Air bag module, clock spring: 93_C or more
DSeat belt with pre-tensioner: 90_C or more
Recheck SRS system operability after re-installing them.
2. If the SRS components and seat belt with pre-tensioner are removed for the purpose of check,
sheet metal repair, painting, etc., they should be stored in a clean, dry place until they are
reinstalled.
WARNING/CAUTION LABELS
Caution labels on the SRS are attached in the
vehicle as shown. Follow label instructions whenservicing the SRS. If the label(s) are dirty or
damaged, replace with new one(s).
Steering wheel
Driver’s air bag module
Clock springFront passenger’s
air bag moduleSRS-ECU
Sun visor
Steering joint cover
Glove boxCover
Seat belt with pre-tensioner

SRS - Air Bag Modules and Clock Spring52B-53
REMOVAL AND INSTALLATION

Pre-removal Operation
Disconnect the Negative ( - ) Battery Terminal.

3 2
41
0.9±0.2 N·m
0.9±0.2 N·m41±8 N·m
Driver’s air bag module removal
steps
AA"1. Driver’s air bag moduleDriver’s air bag module installation
steps
"AADPre-installation inspection
1. Driver’s air bag module
DNegative ( - ) terminal of the battery
connection
"DADPost-installation inspection
Clock spring removal steps
AA"1. Driver’s air bag module
AB"2. Steering wheel
3. Lower column cover
AC"4. Clock springClock spring installation steps
"AADPre-installation inspection
"BA4. Clock spring
3. Lower Column Cover
"CA2. Steering wheel
1. Driver’s air bag module
DNegative ( - ) terminal of the battery
connection
"DADPost-installation inspection

SRS -Air Bag Modules and Clock Spring52B-54

3 2
4
1
50±5 N·m
2
Steering wheel - driver’s air bag
module assembly removal steps
AD"1. Cover
AE"2. Steering wheel - driver’s air bag
module assemblySteering wheel - driver’s air bag
module assembly installation steps
"AADPre-installation inspection
2. Steering wheel - driver’s air bag
module assembly
1. Cover
DNegative ( - ) terminal of the battery
connection
"DADPost-installation inspection
Clock spring removal steps
AD"1. Cover
AE"2. Steering wheel - driver’s air bag
module assembly
3. Lower Column Cover
AC"4. Clock springClock spring installation steps
"AADPre-installation inspection
"BA4. Clock spring
3. Lower Column Cover
"CA2. Steering wheel - driver’s air bag
module assembly
1. Cover
DNegative ( - ) terminal of the battery
connection
"DADPost-installation inspection

SRS - Air Bag Modules and Clock Spring52B-55

1
Removal steps
DInstrument panel assembly
(Refer to GROUP 52A - Instrument
panel.)
A
F"1. Passenger’s air bag moduleInstallation steps
"AADPre-installation inspection
1. Passenger’s air bag module
DInstrument panel assembly
(Refer to GROUP 52A - Instrument
panel.)
DNegative ( - ) battery cable connection
"DADPost-installation inspection
REMOVAL SERVICE POINTS
AA"DRIVER’S AIR BAG MODULE REMOVAL
1. Remove the air bag module mounting screw (torque
screw) from the steering wheel side.
2. Spread the lock outward to remove the connector by
prying with a flat-tipped screw driver as shown in the
illustration at left.
Caution
(1) Be careful not to remove the connector forcibly.
(2) Keep the removed driver’s air bag module facing
the pad surface upward in a clean and dry place.
locked
Connector
Flat-tipped screw
driver
locked

SRS - Air Bag Modules and Clock Spring52B-56
AB"STEERING WHEEL REMOVAL
AC"CLOCK SPRING REMOVAL
Caution
Keep the removed clock spring in a clean and dry place.
AD"COVER REMOVAL
Use the special tool to insert into the notch as shown in
the illustration and remove the cover.
AE"STEERING WHEEL - DRIVER’S AIR BAG MODULE
ASSEMBLY REMOVAL
1. By sliding the A section (in the figure) of the clock spring
connector in the arrow direction, disconnect the connector.
2. Insert the hexagonal bit socket into the arrow section
in the figure. Completely loosen the bolt, and then remove
the steering wheel - driver’s air bag module assembly.
NOTE
Use a hexagonal bit socket or a hexagonal wrench having
an effective length of 75 mm or more in the hexagonal
section and the diameter of 8 mm or more.
MB990803
MB990784
A Clock spring connector
Steering wheel - driver’s air bag
module assembly
Hexagonal bit
socket

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
type>
(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-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
type>
(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