Mitsubishi Montero (2002-2004). Manual - part 772

 

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Mitsubishi Montero (2002-2004). Manual - part 772

 

 

SPECIAL TOOLS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52Ba-21

SPECIAL TOOLS

M1524000700301

TOOL

TOOL NUMBER AND 
NAME

SUPERSESSION

APPLICATION

MB990784
Ornament remover

General service tool

Removal of cover.

MB991502 
Scan tool (MUT-II)

MB991496-OD

• Reading diagnostic trouble 

codes

• Erasing diagnostic trouble 

codes

• Reading vehicle data for a 

specific period

• Reading erase times (Refer to 

MUT-II operating instructions)

MB991865

Dummy resistor

SRS air bag circuit check

MB991866

Resistor harness

MB991223 
A: MB991219 
B: MB991220 
C: MB991221 
D: MB991222 
Harness set 
A: Test harness 
B: LED harness 
C: LED harness adapter
D: Probe

General service tools

Checking the continuity and 
measuring the voltage at the 
SRS-ECU harness connector

MB686560 
SRS air bag adapter 
harness

General service tool

• Deployment of air bag module 

(Front passenger's side) inside 
the vehicle

• Deployment of air bag module 

(Front passenger's side), seat 
belt with pre-tensioner outside 
the vehicle

MB990784

B991502

MB991865

MB991866

MB991223

A

D

C

B

AG

MB686560

TEST EQUIPMENT

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52Ba-22

TEST EQUIPMENT

M1524000800159

SRS MAINTENANCE

M1524003900229

The SRS must be inspected by an authorized dealer up to 10 
years after the date of vehicle registration. (Refer to GROUP 
00, Maintenance Service 

− SRS Maintenanc

P.00-48

.)

POST-COLLISION DIAGNOSIS

M1524001100272

To inspect and service the SRS after a collision (whether or not 
the air bags have deployed), perform the following steps.

SRS-ECU MEMORY CHECK

Required Special Tool:

• MB991502: Scan tool (MUT-II)

CAUTION

To prevent damage to scan tool MB991502, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector (16-

pin).

2. Read (and write down) all displayed diagnostic trouble 

codes. (Refer to 

P.52Bb-4

.)

NOTE: If the battery power supply has been disconnected or 
disrupted by the collision, scan tool MB991502 cannot com-
municate with the SRS-ECU. Check the battery then check 
and, if necessary, repair the front wiring harness and the 
instrument panel wiring harness before proceeding.

3. Read the data list (fault duration and how many times 

memories are erased) using scan tool MB991502.

TOOL

NAME

USE

Digital multi-meter 
Use a multi-meter for which the maximum 
test current is 2 mA or less at the minimum 
range of resistance measurement

Checking the SRS electrical circuitry with 
SRS check harness

AC000019AB

ACX01543

MB991502

AB

16-PIN

POST-COLLISION DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52Ba-23

Data list

4. Erase the diagnostic trouble codes and, after waiting five 

seconds or more, read (and write down) all displayed 
diagnostic trouble codes. (Refer to 

P.52Bb-4

.)

REPAIR PROCEDURE

.

WHEN FRONT AIR BAGS DEPLOY IN A COLLISION.
1. Replace the following parts with new ones.

• Front impact sensor (Refer to 

P.52Ba-27

.)

• SRS-ECU (Refer to 

P.52Ba-31

.)

• Air bag modules (Refer to 

P.52Ba-33

.)

• Seat belt with pre-tensioner (Refer to 

P.52Ba-44

.)

2. Check the following parts and replace if there are any 

malfunctions.

• Clock spring (Refer to 

P.52Ba-33

.)

• Steering wheel, steering column and shaft assembly

(1) Check the wiring harness (built into the steering wheel) 

and connectors for damage, and 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, binds or difficult 

operation and excessive free play.

3. Check the wiring harnesses for binding, the connectors for 

damage, poor connections, and the terminals for 
deformation. (Refer to 

P.52Ba-18

.)

.

WHEN SIDE AIR BAGS DEPLOY IN A COLLISION.
1. Replace the following parts with new ones.

• SRS-ECU (Refer to 

P.52Ba-31

.)

• Side impact sensors (Refer to 

P.52Ba-42

.)

• Front seatback assembly (Refer to GROUP 52A, Front Seat 

P.52A-13

.)

2. Check the wiring harnesses for binding, the connectors for 

damage, poor connections, and the terminals for 
deformation. (Refer to 

P.52Ba-18

.)

.

NO.

SERVICE DATA ITEM

APPLICABILITY

92

Number indicating how often the memory is 
cleared

Maximum time to be stored: 250

93

How long a problem has lasted (How long it 
takes from the occurrence of the problem till 
the first air bag squib igniting signal)

Maximum time to be stored: 9,999 minutes 
(approximately seven days)

94

How long a problem has lasted (How long it 
takes from the first air bag squib igniting 
signal till now.)

POST-COLLISION DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52Ba-24

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.52Ba-26

.

.

Front impact sensors 
1. Check the headlight 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 harnesses for binding, 

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

.

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 fit of the SRS-ECU and its bracket.

.

ACX00588

FENDER SHIELD
PANEL

FRONT IMPACT SENSOR

AB

ACX00587AB

SRS-ECU

 

 

 

 

 

 

 

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