Mitsubishi Galant 9G. Manual — part 1485

POST-COLLISION DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-350

WHEN AIR BAGS DO NOT DEPLOY IN
LOW-SPEED COLLISION.

Check the SRS components. If the SRS components are show-
ing any visible damage such as dents, cracks, or deformation,
replace them with new ones. Concerning parts removed for
inspection, replacement with new parts and cautionary points
for working, refer to appropriate INDIVIDUAL COMPONENT
SERVICE

P.52B-353

.

.

Front impact sensor

1. Check the radiator support panel for distortion and rust.

2. Check the front impact sensor for dents, cracks, deformation

or rust.

3. Check the front impact sensor wiring harness for binding,

check the connector for damage, and check the terminals
for deformation.

.

SRS-ECU

1. Check the SRS-ECU case for dents, cracks or deformation.

2. Check the connector for damage, and the terminals for

deformation.

3. Check the installation of the SRS-ECU.

.

AC306331AB

FRONT IMPACT
SENSOR

HEADLIGHT (RH)

RADIATOR SUPPORT
PANEL

AC308239

SRS-ECU

AB

CENTER
REINFORCEMENT

POST-COLLISION DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-351

Air bag modules

1. Check the pad cover for dents, cracks or deformation.

2. Check the connector for damage, terminal deformities, and

the harness for binding.

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

deformities.

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

wheel to check installation or alignment with the steering
wheel.

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

instrument panel and front deck crossmember to check
installation or alignment.

.

Front seatback assembly (Side-airbag module)

1. Check the air bag module deployment section for dents or

deformation.

2. Check that there is no connector damage, bent terminals or

harness crimping.

.

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.

.

AC307662AB

<DRIVER'S SIDE>

<FRONT PASSENGER'S SIDE>

INFLATOR CASE

CONNECTOR

CONNECTOR

INFLATOR
CASE

AC206854

AIR BAG MODULE
DEPLOYMENT
SECTION

AB

AC306766AB

CASE

PROTECTIVE TUBE

POST-COLLISION DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-352

Side impact sensor

1. Check that there is no bending or corrosion in the center

pillar.

2. Check that there is no denting, breakage or bending of the

side impact sensor.

3. Check that there is no harness crimping, connector damage

or bent terminals.

NOTE: The illustration shows the side impact sensor (RH).
The position of the side impact sensor (LH) is symmetrical to
this.

.

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.

.

Occupant classification sensor

1. Check the occupant classification-ECU case and occupant

classification sensor for dents, cracks or deformation.

2. Check the connector for damage, and the terminals for

deformation.

3. Check the installation of the occupant classification-ECU

and occupant classification sensor.

.

AC206185 AC

FRONT SEAT BELT
RETRACTOR

SIDE
IMPACT
SENSOR

AC307451

AB

SEAT SLIDE
SENSOR

AC305748 AC

OCCUPANT
CLASSIFICATION-ECU

OCCUPANT
CLASSIFICATION
SENSOR

INDIVIDUAL COMPONENT SERVICE

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-353

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

−

Steering Column Shaft Assembly Shock Absorbing
Mechanism Check ).

.

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.

.

Harness connector (Front wiring harness,
instrument panel wiring harness, and floor wiring
harness)

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

P.52B-26

).

INDIVIDUAL COMPONENT SERVICE

M1524002900282

WARNING

•

If heat damage occurs during paint work, remove the SRS-ECU, the air bag modules, the
clock spring, front seats, and the seat belt with pre-tensioner. Recheck the SRS system
operability after reinstalling them. (Refer to GROUP 00, Maintenance Service-SRS Mainte-
nance ).

•

SRS-ECU, air bag module, clock spring: 93

°

C (200

°

F) or more

•

Seat belt with pre-tensioner: 90

°

C (194

°

F) or more

•

If the SRS components are removed for the purpose of inspection, 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, diagnosis, etc., follow the
appropriate procedure in this section. (Front impact sensor: refer to

P.52B-362

, SRS-ECU: refer to

P.52B-365

, Air bag modules and clock spring: refer to

P.52B-368

, Side impact sensor: refer to

P.52B-377

,

Seat belt with pre-tensioner: refer to

P.52B-380

).