Mitsubishi Montero Sport (2004+). Manual - part 737

SRS SERVICE PRECAUTIONS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-17

SRS SERVICE PRECAUTIONS

M1524000300541

.

DANGER

•

In order to avoid injury to yourself or others from 
accidental deployment of the air bag during servic-
ing, read and carefully follow all the precautions 
and procedures described in this manual.

•. 

After disconnecting the battery cable, wait 60 sec-
onds or more before proceeding with the following 
work. The SRS system is designed to retain 
enough voltage to deploy the air bag for a short 
time even after the battery has been disconnected, 
so serious injury may result from unintended air 
bag deployment if work is done on the SRS system 
immediately after the battery cables are discon-
nected.

WARNING

•

Battery posts, terminals and related accessories 
contain lead and lead compounds. WASH HANDS 
AFTER HANDLING.

•

Do not use any electrical test equipment on or near 
the SRS components, except those specified on 

P.52B-71

 and 

P.52B-73

.

•

Never Attempt to Repair the Following Compo-
nents: air bag module, front Impact Sensor, 
SRS-ECU, clock spring, seat belt with pre-ten-
sioner. If any of these components are diagnosed 
as faulty, they should only be replaced in accor-
dance with the INDIVIDUAL COMPONENT SER-
VICE procedures in this manual, starting on 

P.52B-78

.

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC

SRS SERVICE PRECAUTIONS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-18

•. 

Do not attempt to repair the wiring harness con-
nectors of the SRS. If any of the connectors are 
diagnosed as faulty, replace the wiring harness. If 
the wires are diagnosed as faulty, replace or repair 
the wiring harness according to the following 
table.

AC003283

SRS-ECU CONNECTOR:

<WITHOUT SEAT BELT
WITH PRE-TENSIONER>

<WITH SEAT BELT
WITH PRE-TENSIONER>

AC

C-24

C-110

C-24

SRS SERVICE PRECAUTIONS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-19

NOTE: *: The sensor cable is available as service part.

SRS-ECU 
TERMINAL 
NO.

DESTINATION OF HARNESS

CORRECTIVE ACTION

1, 2

Body wiring harness 

→ Front wiring 

harness 

→ Front impact sensor (RH)

Sensor cable* installation procedures (Refer to 

P.52B-104

.)

3, 4

Body wiring harness 

→ Front wiring 

harness 

→ Front impact sensor (LH)

Sensor cable* installation procedures (Refer to 

P.52B-104

.)

5, 6

−

−

7

Body wiring harness 

→ Ground

Repair or replace the body wiring harness.

8

 Body wiring harness 

→ SRS warning 

light

Repair or replace each wiring harness.

9

Body wiring harness 

→ Air bag module 

(Front passenger's side)

Repair or replace each wiring harness.

10

11

Body wiring harness 

→ Clock spring → 

Air bag module (Driver's side)

Repair or replace each wiring harness replace 
the clock spring.

12

13

Body wiring harness 

→ Junction block 

(Fuse No. 8)

Repair or replace each wiring harness.

14, 15

−

−

16

Body wiring harness 

→ Junction block 

(Fuse No. 7)

Repair or replace each wiring harness.

17 to 19

−

−

20

Body wiring harness 

→ Data link 

connector

Repair or replace each wiring harness.

21 to 28

−

−

29, 30

Body wiring harness 

→ Floor wiring 

harness 

→ Driver's side seat belt 

pre-tensioner

Repair or replace each wiring harness.

31 to 42

−

−

SRS SERVICE PRECAUTIONS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-20

WARNING

Inspection of the SRS-ECU harness connector should be carried out by the following proce-
dure. Insert the special tool MB991222 (narrow probe in the harness set) into connector from 
harness side (rear side), and connect the tester to this probe. If any to other than the special 
tool MB991222 is used, it may cause damage to the harness and other components. Further-
more, measurement should not be carried out by touching the probe directly against the ter-
minals from the front of the connector. The terminals are plated to increase their 
conductivity, so that if they are touched directly by the probe, the plating may break, which 
will decrease reliability.

.

WARNING

•

If heat damage may occur during paint work, remove the SRS-ECU, the air bag module, 
clock spring, the front impact sensor, the seat belt pre-tensioner.

•

SRS-ECU, air bag module, clock spring, front impact sensor: 93

°

 C (200

°

 F) or more

•

Seat belt with pre-tensioner: 90 C (194

°

 F) or more

•

After servicing the SRS system, check the warning light operation to make sure that the 
system functions properly. (Refer to 

P.52B-61

.)

•

Make certain that the ignition switch is "OFF" (LOCK) position when the scan tool is con-
nected or disconnected. 

•

If you have any questions about the SRS system, please contact the MMNA Tech Line.

AC003284

SRS-ECU HARNESS CONNECTOR

SRS-ECU HARNESS CONNECTOR:
HARNESS SIDE 

<WITHOUT SEAT BELT
WITH PRE-TENSIONER>

<WITH SEAT BELT
WITH PRE-TENSIONER>

MB991222

AC