Mitsubishi Lancer Evolution IX. Manual — part 650

DRIVER'S AND PASSENGER'S (FRONT) AIR BAG MODULES AND CLOCK SPRING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-113

<<B>> STEERING WHEEL AND DRIVER’S
AIR BAG MODULE ASSEMBLY REMOVAL

WARNING

•

The air bag module must not be measured
with such equipment as an ohmmeter, nor
disassembled.

•

The removed air bag module should be
stored in a clean, dry place with the
deployment surface facing up.

1. By sliding the A section (in the figure) of the air

bag module 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 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.

<C>> CLOCK SPRING REMOVAL

WARNING

The removed clock spring should be stored
in a clean, dry place.

<<D>> PASSENGER’S (FRONT) AIR BAG
MODULE REMOVAL

WARNING

•

When the air bag module is removed, do not

damage the engagement of the pawls.

•

The removed air bag module should be
stored in a clean, dry place with facing the
deployment surface facing up.

Insert the screwdriver (

−) into the position specified

in the figure and lift the screwdriver upward to
release the pawls engaged, and then remove the air
bag module.

INSTALLATION SERVICE POINTS
>>A<< PRE-INSTALLATION INSPECTION

WARNING

Dispose of air bag modules only according
to the specified procedure (Refer to

P.52B-120

).

1. When installing the new air bag modules and

clock spring, refer to “INSPECTION” (

P.52B-115

).

2. Connect the negative battery cable.

AC105823

AC304700

AC305145AB

A

Steering
wheel

Air bag module
connector

AC211762 AC

Hexagonal bit
socket

AC100443

DRIVER'S AND PASSENGER'S (FRONT) AIR BAG MODULES AND CLOCK SPRING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-114

CAUTION

To prevent damage to M.U.T.-II/III, always turn the
ignition, switch to the “LOCK” (OFF) position
before connecting or disconnecting M.U.T.-II/III.
3. Connect M.U.T.-II/III to the diagnosis connector.
4. Turn the ignition switch to the “ON” position.
5. Check diagnosis codes using M.U.T.-II/III ensure

that the SRS operates properly.
Confirm that the diagnosis codes other than 21
and 24 are not set.

DANGER

Wait at least 60 seconds after disconnecting
the battery cable before doing any further
work (Refer to

P.52B-3

).

6. Turn the ignition switch to the "LOCK" (OFF)

position. Disconnect the negative battery cable
and tape the terminal to prevent accidental
connection and air bags deployment.

>>B<< CLOCK SPRING INSTALLATION

WARNING

Ensure that the clock spring’s mating marks
are properly aligned. If not, the steering
wheel may not rotate completely during a
turn, or the flat cable in the clock spring
could be damaged, This would prevent nor-
mal SRS operation and possibly cause seri-
ous injury to the driver.

1. Align the mating marks of the clock spring.

<Mating Mark Alignment>
Turn the clock spring clockwise fully. Then turn it
back approximately 3 3/4 turns counterclockwise
to align the mating marks.

2. Turn the front wheels to the straight-ahead

position. Then install the clock spring to the
column switch.

>>C<< STEERING WHEEL AND DRIVER’S
AIR BAG MODULE ASSEMBLY
INSTALLATION

CAUTION

When installing the steering wheel, and driver’s
air bag module ensure that the harness of the
clock spring does not become caught or tangled.
1. Before installing the steering wheel, and driver’s

air bag module turn the vehicle’s front wheels to
the straight-ahead position and align the mating
marks of the clock spring.

2. After securing the steering wheel, turn the

steering wheel all the way in both directions to
confirm that the steering wheel rotation is normal.

>>D<< POST-INSTALLATION
INSPECTION

1. Reconnect the negative battery cable.
2. Turn the ignition switch to “ON” position.

AC304777

Steering shaft

AB

MB991502

<Using the M.U.T.-II>

AC211686

MB991911

16-PIN

MB991827

MB991824

AE

<Using the M.U.T.-III>

AC300168

Mating marks

AB

DRIVER'S AND PASSENGER'S (FRONT) AIR BAG MODULES AND CLOCK SPRING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-115

3. Does the SRS warning lamp illuminate for about 7

seconds and then goes out?

4. If yes, the SRS system is functioning properly. If

no, refer to

P.52B-8

.

INSPECTION

M1524014600039

AIR BAG MODULE CHECK

WARNING

•

If any component damage is found during
the following inspection, replace the air
bag module(s) with a new one. Dispose of
the old one according to the specified
procedure (Refer to

P.52B-120

).

•

Never attempt to measure the circuit
resistance of he air bag module (squib)
even if you are using the specified tester.
If the circuit resistance is measured with a
tester, accidental air bag module(s)
deployment will result in serious personal
injury.

1. Check the pad cover for dents, cracks or

deformation.

2. Check the connectors for damage, the terminals

for deformation, and the harness for binds.

3. Check the air bag inflator case for dents, cracks or

deformation.

4. Install the air bag module (driver’s side) to the

steering wheel and check fit and alignment with
the wheel.

5. Install the air bag module (front passenger’s side)

to the instrument panel and front deck
crossmember and check fit and alignment.

AC311044

SRS warning lamp

AB

AC006205

AC311067

AC304700

Steering
wheel

AC

Inflator case

Connector

<Driver's side>

Connector

<Front passenger's side>

DRIVER'S AND PASSENGER'S (FRONT) AIR BAG MODULES AND CLOCK SPRING

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-116

CLOCK SPRING CHECK

If any malfunction is found in the following inspec-
tions, replace the clock spring with a new one.
1. Check the connectors and protective tube for

damage, and the terminals for deformation.

2. Visually check the case for damage.
3. Check to see that there is a charge (continuity)

between the C-204 clock spring connector
terminal 1 and C-203 horn switch.

CAUTION

Do not directly insert a probe, etc. into the termi-
nal from the front of the connector.
4. Insert the special tool extra fine probe

(MB992006) from behind the C-205 air bag
module connector (driver’s side).

5. As shown in the Figure, connect the circuit tester

to the special tool extra fine probe (MB992006)
and check to see that there is a charge between
the terminals.

5 6

1 2 3 4

AC300312AD

Case

C-204 Clock spring
connector

Protective tube

C-205 Air bag
module connector

C-203 Horn switch

AC300374AE

Clock spring

C-205 Air bag
module connector
(driver's side)

C-205 Air bag
module connector

Extra fine probe
(MB992006)

Digital
multi-meter