Mitsubishi Montero (2004+). Manual - part 1223

SIDE IMPACT SENSOR

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-227

SIDE IMPACT SENSOR

REMOVAL AND INSTALLATION

M1524004600340

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 "LOCK" (OFF) position.

• Front Seat Belt Removal (Refer to GROUP 52A, Front 

Seat Belt 

P.52A-29

).

• Center Pillar Trim, Lower Removal (Refer to GROUP 52A, 

Trims 

P.52A-8

).

Post-installation Operation
• Center Pillar Trim, Lower Installation (Refer to GROUP 

52A, Trims 

P.52A-8

).

• Front Seat Belt Installation (Refer to GROUP 52A, Front 

Seat Belt 

P.52A-29

).

ACX01489AB

1

3

CENTER PILLAR

4.9 ± 1.0 N·m
43 ± 8 in-lb

2

FORWARD

REMOVAL STEPS

<<A>>

1.

NEGATIVE (-) BATTERY CABLE 
CONNECTION

2.

FRONT NOISE PROTECTOR

3.

SIDE IMPACT SENSOR

INSTALLATION STEPS

>>A<<

•

PRE-INSTALLATION INSPECTION

>>B<<

3.

SIDE IMPACT SENSOR

2.

FRONT NOISE PROTECTOR

1.

NEGATIVE (-) BATTERY CABLE 
CONNECTOR

>>C<<

•

POST-INSTALLATION 
INSPECTION

SIDE IMPACT SENSOR

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-228

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-18

).

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(s) 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 air bag may not operate normally.

Securely connect the connector.

.

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC

ACX00591

CENTER 
PILLAR

FORWARD

AB

SIDE IMPACT
SENSOR

SEAT BELTS WITH PRE-TENSIONER

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-229

>>C<< POST-INSTALLATION INSPECTION

1. Reconnect the negative (

−) battery cable.

2. Turn the ignition switch to "ON" position.
3. Does the "SRS" warning light illuminate for approximately 

seven seconds, and then remain off for at least five sec-
onds after turning "OFF"?

4. If yes, the SRS system is functioning properly. If no, refer to 

P.52B-22

.

INSPECTION

M1524004700295

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 above, refer to the section concerning SRS diagno-
sis (Refer to 

P.52B-21

).

• Check the side impact sensor and bracket for dents, cracks 

or deformation.

• Check the connector for damage, and terminal for deforma-

tion.

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

lar.

SEAT BELTS WITH PRE-TENSIONER

REMOVAL AND INSTALLATION

M1524004100345

WARNING

•

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

•

Be extremely careful when handling the seat 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 top of 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 should 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 should be operated first before disposal (Refer to 

P.52B-234

).

ACX01667

AT

TEMP

SRS

P
R
N
D

5
4
3
2
1

x1000r/min

2

3

4

5

6

7

8

1

AB

SRS WARNING LIGHT

SEAT BELTS WITH PRE-TENSIONER

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-230

Required Special Tool: 

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface 

(V.C.I.)

• MB9991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B (Vehicles 

without CAN communication system)

AC204135

2

3

44 ± 10 N·m
33 ± 7 ft-ib

3

44 ± 10 N·m
33 ± 7 ft-ib

1

4

AB

44 ± 10 N·m
33 ± 7 ft-ib

REMOVAL STEPS

<<A>>

1. NEGATIVE (

−) BATTERY CABLE 

CONNECTION

2. SASH GUIDE COVER
• CENTER PILLAR TRIM, LOWER 

(REFER TO GROUP 52A, TRIMS 

P.52A-3

).

3. OUTER SEAT BELT CONNECTION
4. SEAT BELT WITH PRE-TENSIONER

INSTALLATION STEPS

>>A<<

• PRE-INSTALLATION INSPECTION

4. SEAT BELT WITH PRE-TENSIONER
3. OUTER SEAT BELT CONNECTION
• CENTER PILLAR TRIM, LOWER 

(REFER TO GROUP 52A, TRIMS 

P.52A-3

).

2. SASH GUIDE COVER

1. NEGATIVE (

−) BATTERY CABLE 

CONNECTION

>>B<<

• POST-INSTALLATION INSPECTION

INSTALLATION STEPS (Continued)