Mitsubishi Galant (2004+). Manual - part 1621

SIDE IMPACT SENSOR

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-377

SIDE IMPACT SENSOR

M1524004600317

REMOVAL AND INSTALLATION

A side impact sensor is installed behind the center pillar trim on both driver and passenger sides of the vehi-
cle.

WARNING

•

Never attempt to disassemble or repair the side impact sensor. If faulty, replace it. 

•

Do not drop or subject the side impact sensor to impact or vibration. Replace the side 
impact sensor, if dents, cracking, deformation, or rust are present. 

•

Replace the side impact sensor after the air bag has deployed. 

NOTE: The illustration above shows the side impact 
sensor (RH). The position of the side impact sensor 

(LH) is symmetrical to this.

Pre-removal Operation
• Turn the ignition key to the "LOCK" (OFF) position.

AC307661AB

FRONT OF 
VEHICLE

7.5 ± 2.5 N·m
67 ± 22 in-lb

CENTER PILLAR

1

2

REMOVAL STEPS

<<A>>

1.

NEGATIVE (

−) BATTERY CABLE 

CONNECTION

•

CENTER PILLAR TRIM LOWER 
(REFER TO GROUP 52A, TRIMS 

P.52A-10

).

•

SEAT BELT WITH 
PRE-TENSIONER (REFER TO 
GROUP 52B 

P.52B-380

).

2.

SIDE IMPACT SENSOR

INSTALLATION STEPS

>>A<<

•

PRE-INSTALLATION INSPECTION

>>B<<

2.

SIDE IMPACT SENSOR

•

SEAT BELT WITH 
PRE-TENSIONER (REFER TO 
GROUP 52B 

P.52B-380

).

•

CENTER PILLAR TRIM LOWER 
(REFER TO GROUP 52A, TRIMS 

P.52A-10

).

1.

NEGATIVE (

−) BATTERY CABLE 

CONNECTOR

>>C<<

•

POST-INSTALLATION 
INSPECTION

SIDE IMPACT SENSOR

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-378

REMOVAL SERVICE POINT

.

<<A>> NEGATIVE (

−) BATTERY CABLE DISCONNECTION

DANGER

Wait at least 60 seconds after disconnecting the bat-
tery cable before doing any further work. (Refer to 

P.52B-26

).

WARNING

Battery posts, terminals and related accessories con-
tain lead and lead compounds. WASH HANDS AFTER 
HANDLING.

Disconnect the negative (

−) battery cable from the battery and 

tape the terminal to prevent accidental connection and air bag 
deployment.

INSTALLATION SERVICE POINTS

.

>>A<< PRE-INSTALLATION INSPECTION
Check the side impact sensor for dents, breakage and bending 
and measure the resistance between the terminals, even when 
installing a new side impact sensor.

.

>>B<< SIDE IMPACT SENSOR INSTALLATION

WARNING

If the side impact sensor is not installed securely and 
correctly, the side-airbag may not operate normally.

Securely connect the connector.

.

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC

AC206185 AC

FRONT SEAT BELT
RETRACTOR

SIDE
IMPACT
SENSOR

SIDE IMPACT SENSOR

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-379

>>C<< POST-INSTALLATION INSPECTION

1. Reconnect the negative (

−) battery cable.

2. Turn the ignition switch to the "ON" position.

3. Does the "SRS" warning light illuminate for approximately 

seven seconds, and go out?

4. If yes, the SRS system is functioning properly. If not, refer to 

P.52B-32

.

INSPECTION

M1524004700251

WARNING

If a dent, crack, deformation or rust is detected, 
replace with a new sensor.

NOTE: For checking of the side impact sensor other than 
described below, refer to the section concerning SRS diagnosis 
(Refer to 

P.52B-33

).

1. Check the side impact sensor and bracket for dents, cracks 

or deformation.

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

mation.

3. Check that there is no bending or corrosion in the center pil-

lar.

AC206181

SRS WARNING LIGHT

AB

SEAT BELTS WITH PRE-TENSIONER

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-380

SEAT BELTS WITH PRE-TENSIONER

M1524004100301

REMOVAL AND INSTALLATION

WARNING

•

Never attempt to disassemble or repair the seat belt pre-tensioner. If faulty, replace it.

•

Be extremely careful when handling the seat belt with pre-tensioner. Do not subject it to 
shocks, drop it, bring it close to strong magnets or allow contact with water, grease or oil. 
Always replace it with a new part if any dents, cracks or deformation is found.

•

Do not place anything on the seat belt pre-tensioner.

•

Do not expose the seat belt pre-tensioner to temperatures over 90

°

C (194

°

F).

•

After operating the seat belt pre-tensioner, replace the seat belt pre-tensioner with a new 
part.

•

Gloves and protective goggles must be worn when handling a seat belt pre-tensioner 
once it has been used.

•

If disposing of a seat belt with pre-tensioner which has not yet been operated, its seat belt 
pre-tensioner must be operated first before disposal. (Refer to 

P.52B-388

).

•

When removing and installing the front passenger seat, be sure to carry out accuracy 
check occupant classification sensor after the seat has been installed in the vehicle. 
(On-Vehicle Service 

P.52B-354

.)

Pre-removal Operation
• Turn the ignition key to the "LOCK" (OFF) position.

AC307809

AC307810

1

AB

44 ± 10 N·m
33 ± 7 ft-lb

44 ± 10 N·m
33 ± 7 ft-lb

3

2

7

4

6

5

44 ± 10 N·m
33 ± 7 ft-lb