Mitsubishi Grandis. Manual — part 1041

POST-COLLISION DIAGNOSIS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-216

3. Check the sensor harnesses for binding, the

connectors for damage, and the terminals for
deformation.

NOTE: The figures show front impact sensors (LH).
The side impact sensors (RH) are symmetrical with
the side impact sensors (LH).

SRS-ECU

1. Check the SRS-ECU case and brackets for dents,

cracks or deformation.

2. Check the connector for damage, and the

terminals for deformation.

3. Check the SRS-ECU and bracket for installation

condition.

AIR BAG MODULES

1. Check the pad cover for dents, cracks or

deformation.

2. Check the connector for damage, terminals

deformities, and the harness for binding.

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

deformities.

4. Check the air bag modules for proper installation.

FRONT SEAT BACK ASSEMBLY (SIDE
AIR BAG MODULE)

1. Check the side air bag module deployment

section in the seat for dents and deformation.

2. Check the connectors for damage, the terminals

for deformation, and the harness for binds.

AC300929

AC311438

AC312488AB

SRS-ECU

Shift lever assembly

AC312188AB

Inflator case

Connector

<Driver's side>

<Passenger's (front) side>

Inflator case

Connector

AC303516

AD

Side-airbag module
deployment section

POST-COLLISION DIAGNOSIS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-217

CLOCK SPRING

1. Check the clock spring connectors and protective

tube for damage, and the terminals for
deformation.

2. Visually check the case for damage.

SIDE IMPACT SENSOR

1. Check the centre pillar for deformation or rust.
2. Check the side impact sensors for dents, cracks,

deformation and rust.

3. Check the connector for damage and the

terminals for deformation.
NOTE: The figures show side impact sensors
(RH). The side impact sensors (LH) are
symmetrical with the side impact sensors (RH).

SEAT BELT WITH PRE-TENSIONER

1. Check the seat belt for damage or deformation.

2. Check the seat belt with pre-tensioner for cracks

or deformation.

3. Check that the unit is installed correctly to the

vehicle body.

CURTAIN AIR BAG MODULES

1. Check that the curtain air bag deployment part of

the headlining is normal.

2. Check the inflator surface for cracks, dents or

deformations.

3. Check the air bag for breakage.
4. Check the connector for damage, the terminal for

deformation and the harness for binding.

SEAT SLIDE SENSOR

1. Check that there is no connector damage, bent

terminals or harness crimping.

2. Check the installation of the seat slide sensor.

AC306766AD

Case

Protective tubes

AC302574

AC311614

AC312491

Centre pillar

Second
seat belt

Side impact
sensor (rear)

Side impact
sensor (front)

<Front>

<Rear>

AB

AC302258AC

Inflator

Curtain air bag module
deployment section

AC311621

AC312492

AC311625

Seat slide
adjuster

Seat slide
sensor

Front seat
(Driver's side)

AB

INDIVIDUAL COMPONENT SERVICE

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-218

PASSENGER’S AIR BAG CUT OFF
SWITCH

1. Check the passenger’s air bag cut off switch for

dents or deformation.

2. Check the installation of the passenger’s air bag

cut off switch.

STEERING WHEEL, STEERING COLUMN
AND SHAFT ASSEMBLY

1. Check the wiring harness (built into the steering

wheel) and the connectors for damage, and the
terminals for deformation.

2. Install the air bag module to check fit or alignment

with the steering wheel.

3. Check the steering wheel for noise, binding or

difficult operation and excessive free play.

4. Check the steering column shaft shock absorbing

mechanism (Refer to GROUP 37, On-Vehicle
Service

P.37-13

).

HARNESS CONNECTOR (INSTRUMENT
PANEL WIRING HARNESS AND FLOOR
WIRING HARNESS, ROOF WIRING
HARNESS)

Check harnesses for binding, connectors for damage
and terminals for deformation (Refer to

P.52B-5

).

INDIVIDUAL COMPONENT SERVICE

M1524002900442

WARNING

•

If heat damage may occur during paint work, remove the SRS-ECU, the air bag modules,
the clock spring, front seats, side impact sensors and the seat belt with pre-tensioner.

•

SRS-ECU, air bag modules, clock spring and side impact sensors: 93

°

C or more

•

Seat belt with pre-tensioner: 90

°

C or more

•

If the SRS components 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.

If the SRS components are to be removed or replaced as a result of maintenance, troubleshooting etc., follow
the service procedures that follow. (SRS-ECU; refer to

P.52B-223

, Driver’s and passenger’s (front) air bag

modules and clock spring; refer to

P.52B-225

, Side and curtain air bag modules; refer to

P.52B-231

,Front

impact sensor ; refer to

P.52B-220

, Side impact sensors; refer to

P.52B-236

, Seat belt with pre-tensioner ;

refer to

P.52B-239

, Seat slide sensor ; refer to

P.52B-242

, Passenger’s air bag cut off switch ; refer to

P.52B-244

).

WARNING/CAUTION LABELS

M1524003000163

Caution labels on the SRS are attached in the vehicle as shown. Follow label instructions when servicing the
SRS. If the label(s) are dirty or damaged, replace with new one(s).

AC312598AB

Passenger's air bag
cut off switch

Glove box

WARNING/CAUTION LABELS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-219

AC312005

AC302070

AC302072

AC302189

AC302123

AC302187

AC311401

AC311369

AC311626

AC311623

AC311408

AC311881

AC

SRS-ECU

Steering wheel

Driver's air bag module

Clock spring

Passenger's (front)
air bag module

Sun visor*

Glove box

Steering joint cover

Seat belt with pre-tensioner
(driver's and passenger's seat)

Side air bag module

Front impact sensor

Hood