Mitsubishi Outlander GS45X. Manual - part 1377

FASTENER TIGHTENING SPECIFICATIONS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-3

FASTENER TIGHTENING SPECIFICATIONS

M1524004900523

GENERAL INFORMATION

M1524000102509

DANGER

The SRS-ECU adopts the rollover specifica-
tion that the curtain airbag and seat belt 
pre-tensioner operate at the occurrence of 
rollover. Therefore, do not tilt the vehicle to 
the right and left with the IG ON or tilt the 
SRS-ECU to the right and left with the IG ON 
and the harness installed.

.

WARNING

Improper service could result in serious 
injury of the service personnel or the pas-
senger.

.

The SRS is designed to supplement the front seat 
belts. It reduces injury to the driver(s) and the front 
passenger(s) by deploying air bag(s) in case of a 
frontal collision. In addition, the side-airbag and cur-
tain air bag inflate upon a side collision to reduce the 
risk of passenger injuries.

The SRS front air bags from an advanced air bag 
system together with sensors at the vehicle and sen-
sors attached to front seats.

.

Side-airbag systems in the front seats are activated 
when side impacts exceed a criteria to protect the 
occupants’ upper bodies.

.

The curtain airbag system operates together with the 
side-airbag to protect the heads of passengers in the 
front and second seats.

.

The seat belts with pre-tensioner work simulta-
neously with the SRS. The seat belt incorporating the 
pre-tensioner automatically winds the seat belt upon 
front impact to reduce forward shifting of the driver’s 
and passenger’s. The seat belt use status is used to 
control the activation and deactivation of the pre-ten-

Item

Specification

Air bag module(s) and clock spring
Paddle shift mounting bolt

7.0 

± 3.0 N⋅m (62 ± 26 in-lb)

Steering wheel nut

44 

± 11 N⋅m (32 ± 8 ft-lb)

Passenger’s (front) air bag module mounting bolt

5.0 

± 1.0 N⋅m (44 ± 8 in-lb)

Torx screw

9.5 

± 2.5 N⋅m (84 ± 22 in-lb)

Curtain air bag module
Curtain air bag module mounting bolt

7.0 

± 3.0 N⋅m (62 ± 26 in-lb)

Front impact sensor
Front impact sensor bolt 

12 

± 1 N⋅m (106 ± 8 in-lb)

Seat belts with pre-tensioner
Lap pre-tensioner mounting bolt

43 

± 8 N⋅m (32 ± 5 ft-lb)

Seat belt lower anchor bolt

43 

± 8 N⋅m (32 ± 5 ft-lb)

Seat belt shoulder anchor bolt

43 

± 8 N⋅m (32 ± 5 ft-lb)

Seat belt with pre-tensioner mounting bolt

43 

± 8 N⋅m (32 ± 5 ft-lb)

Seat belt with pre-tensioner mounting screw

5.0 

±1.0 N⋅m (44 ± 8 in-lb)

Side impact sensor 
Side impact sensor nut (front) 

12 

± 1 N⋅m (106 ± 8 in-lb)

Side impact sensor bolt (rear) 

9.0 

± 1.0 N⋅m (80 ± 8 in-lb)

SRS control unit (SRS-ECU)
SRS-ECU bolt

9.0 

± 1.0 N⋅m (80 ± 8 in-lb)

GENERAL INFORMATION

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-4

sioner. In addition to the pre-tensioner for the shoul-
der side, the lap pre-tensioner has been installed on 
the outer seat belt lower anchor side of the driver's 
seat in order to improve the restraining performance 
around the waist as well as the chest area.

.

The SRS consists of air bag modules, SRS air bag 
control unit (SRS-ECU), front impact sensors, side 
impact sensors, SRS warning light, passenger’s air 
bag OFF indicator light, passenger’s seat belt warn-
ing light, clock spring, seat belt pre-tensioner, seat 
belt switch, seat slide sensor, weight sensor and 
occupant classification-ECU. Air bag modules are 
located in the center of the steering wheel and above 
the glove box. Side-airbags are located inside the 
front seatback assemblies. The curtain air bag mod-
ule consists of an air bag, an inflator, and the fixing 
gear relating to those parts, and is installed in the 
roof side sections (from the driver's and the passen-
ger's front pillars to the rear pillars). Each air bag 
consists of a folded air bag and an inflator unit. The 
SRS-ECU placed on the forefront of the floor moni-
tors the system and has a front air bag safing G-sen-
sor, front air bag analog G-sensor and a side-airbag 
safing G-sensor. The front impact sensor is assem-

bled in the front end upper bar to monitor impact in 
case of front impact. The side impact sensors inside 
the center pillars and the rear quarter panel monitor 
the shock incurred by the sides of the vehicle. The 
SRS warning light on the combination meter indi-
cates the operational status of the SRS. The clock 
spring is installed in the steering column. The seat 
belt pre-tensioner is built into the driver's and pas-
senger's front seat belt retractor. The seat slide sen-
sor is installed at the seat adjuster section of the 
driver seat in order to detect the driver seat slide 
position. The weight sensor is installed underneath a 
rail of the passenger seat to detect the load on the 
seat. The passenger’s air bag OFF indicator light is 
installed to the lower left of the center panel, and illu-
minates when the passenger seat airbag is inactive. 
The passenger’s seat belt warning light is installed to 
the lower right of the center panel, and illuminates 
when the passenger is not wearing the seat belt. The 
seat belt switch detects whether the seat belt is 
used.
Only authorized service personnel should do work on 
or around the SRS components. Those service per-
sonnel should read this manual carefully before start-
ing any such work.

.

ON-BOARD DIAGNOSTIC/SRS WARNING LIGHT 
FUNCTION

The SRS-ECU monitors the SRS system and stores data con-
cerning any detected faults in the system. When the ignition 
switch is in "ON" position, the SRS warning light, passenger’s 
air bag OFF indicator light and passenger’s seat belt warning 
light should illuminate for about seven seconds and then turn 
"OFF." That indicates that the SRS system is in operational 
order. If the SRS warning light does any of the following, the 
immediate inspection by an authorized dealer is needed:
1. The SRS warning light does not illuminate as described 

above.

2. The SRS warning light stays on for more than seven 

seconds.

3. The SRS warning light illuminates while driving.
If a vehicle's SRS warning light is in any of these three condi-
tions, the SRS system must be inspected, diagnosed and ser-
viced in accordance with this manual.

AC901647

SRS Warning light

AB

GENERAL INFORMATION

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-5

CONSTRUCTION DIAGRAM

NOTE: This construction diagram shows the general 
view of the SRS components. For details, refer to 

"Schematic (

P.52B-9

), "Configuration Diagrams 

(

P.52B-12

), " and "Circuit Diagram (

P.52B-14

)".

AC901052

ZC600985

SRS-ECU

Data link connector

Side impact sensor (front)

Side impact sensor (rear)

Side-airbag module

Seat belt 
pre-tensioner 

Lap 
pre-tensioner (LH)

Occupant classification-ECU

Seat slide sensor

AC

SRS warning light

Passenger's seat belt warning light

Passenger's air bag OFF indicator light

Curtain air bag module

Front impact sensor

Weight 
sensor

Seat belt 
pre-tensioner

SRS warning light

Driver's air bag module

Clock spring

Passenger's (front) 
air bag module

<Except color liquid crystal display>

<Color liquid crystal display>

Inner seat belt 
(seat belt buckle switch)

GENERAL INFORMATION

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-6

WARNING/CAUTION LABELS

A number of caution labels related to the SRS are found in the vehicle, as shown in the following illustrations. 
Follow label instructions when servicing SRS. The label I is not to be removed except by owner. If the other 
labels are dirty or damaged, replace them.

AC802376 AC

SRS-ECU

A

C

E

D

F

D

Lap pre-tensioner (LH)

G

H

I

J

Driver's air bag module

Passenger's (front) 
air bag module

Sunvisor

Side-air bag module 
(driver's and 
passenger's seat)

Curtain air bag module 
(right and left)

Glove box

Seat belt pre-tensioner 
(driver's and passenger's seat)

B