Mitsubishi Outlander (2003+). Manual - part 351

 

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Mitsubishi Outlander (2003+). Manual - part 351

 

 

GENERAL INFORMATION

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-3

GENERAL INFORMATION

M1524000100495

The Supplemental Restraint System (SRS) and seat 
belt with pre-tensioner is designed to supplement the 
driver's and front passenger's seat belts to help 
reduce the risk or severity of injury to the driver and 
front passenger by activating and deploying both 
front air bags in certain frontal collisions.
The SRS consist of four air bag modules, SRS air 
bag control unit (SRS-ECU), two front impact 
sensors, two side impact sensors, SRS warning 
lamp, clock spring and seat belt pre-tensioner. Front 
air bags are located in the centre of the steering 
wheel and above the glove box. Each air bag is 
made up of a folded air bag and an inflator unit. Side 
air bags are located inside the front seatback 
assemblies. The SRS-ECU under the front floor 
console monitors the system and has a front air bag 

safing G-sensor, front air bag analog G-sensor and a 
side air bag safing G-sensor. The front impact sensor 
is assembled outside the headlamp support panel to 
monitor impact in case of front impact. The side 
impact sensors inside the centre pillars monitor the 
shock incurred by the sides of the vehicle. The 
warning lamp on the instrument panel indicates 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 
passenger's front seat belt retractor.
Only authorized service personnel should do work on 
or around the SRS components. Those service 
personnel should read this manual carefully before 
starting any such work.

AC301343

SRS warning lamp

Driver's air bag 
module

Clock spring

Passenger's (front) 
air bag module

Side air bag module

Side impact sensor

Side air bag module

Side impact sensor

Front impact sensor

SRS-ECU

Seat belt with pre-tensioner

AC

Diagnosis connector

SERVICE PRECAUTIONS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-4

SERVICE PRECAUTIONS

M1524000300369

DANGER

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

CAUTION

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

P.52B-9

.

CAUTION

Never Attempt to Repair the Following 
Components:

1. SRS air bag control unit (SRS-ECU)
2. Front impact sensor
3. Clock spring
4. Driver's and front passenger's air bag 

modules

5. Side air bag module
6. Side impact sensor
7. Seat belt with pre-tensioner

NOTE: If any of these components are diagnosed as 
faulty, they should only be replaced, in accordance 
with the INDIVIDUAL COMPONENTS SERVICE 
procedures in this manual, starting at page 

P.52B-174

.

CAUTION

Do not attempt to repair the wiring harness 
connectors of the SRS. If a defective wiring 
harness is found, repair or replace it by referring 
to the table below.

AC300634

SRS-ECU connector

AB

SERVICE PRECAUTIONS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-5

SRS-ECU terminal No.

Destination of harness

Remedy

1, 2

Instrument panel wiring harness 

 

Front wiring harness (RH) 

 Front 

impact sensor (RH)

Correct or replace each wiring 
harness.

3, 4

Instrument panel wiring harness 

 

Front wiring harness (LH) 

 Front 

impact sensor (LH)

Correct or replace each wiring 
harness.

7

Instrument panel wiring harness

 

Earth

Correct or replace the instrument 
panel wiring harness.

8

Instrument panel wiring harness 

 

SRS warning lamp

Correct or replace the instrument 
panel wiring harness.

9, 10

Instrument panel wiring harness 

 

Air bag module (Front passenger's 
side)

Correct or replace the instrument 
panel wiring harness.

11, 12

Instrument panel wiring harness 

 

Clock spring 

 Air bag module 

(Driver's side)

Correct or replace instrument panel 
wiring harness. Replace the clock 
spring.

13

Instrument panel wiring harness 

 

Junction block (fuse No.3)

Correct or replace the instrument 
panel wiring harness.

16

Instrument panel wiring harness 

 

Junction block (fuse No.2)

Correct or replace the instrument 
panel wiring harness.

20

Instrument panel wiring harness 

 

Diagnosis connector

Correct or replace the instrument 
panel wiring harness.

21, 22

Floor wiring harness (RH) 

 Side air 

bag module (LH)

Correct or replace the floor wiring 
harness.

23, 24

Floor wiring harness (RH) 

 Side air 

bag module (RH)

Correct or replace the floor wiring 
harness.

27, 28

Floor wiring harness (RH) 

 Seat 

belt pre-tensioner (Front 
passenger's side)

Connect or replace the floor wiring 
harness.

29, 30

Floor wiring harness (LH) 

 Seat 

belt pre-tensioner (driver's side)

Connect or replace the floor wiring 
harness.

34, 36

Floor wiring harness (LH) 

 Side 

impact sensor (LH)

Connect or replace the floor wiring 
harness.

40, 42

Floor wiring harness (RH) 

 Side 

impact sensor (RH)

Connect or replace the floor wiring 
harness.

SERVICE PRECAUTIONS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-6

DANGER

After disconnecting the battery cable, wait 60 
seconds or more before proceeding with the 
following work. In addition, insulate the 
negative battery terminal with a tape. The 
condenser inside the SRS-ECU 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 disconnected.

AC300580AB

Insulating tape

Battery

Battery cable

 

 

 

 

 

 

 

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