Mitsubishi Pajero Pinin. Manual - part 306

 

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Mitsubishi Pajero Pinin. Manual - part 306

 

 

SRS – 

General Information

52B-3

Driver’s air bag
module

Clock spring

Front passenger’s
air bag module

Diagnosis
connector

SRS-ECU

Seat belt pre-tensioner

Seat belts with
pre-tensioner

Driver’s air bag

Side air bag

Side impact sensor*

Front 
passenger’s
air bag

Side air bag
module*

SRS warning lamp

SRS-ECU

Front impact sensor

NOTE
*: Indicates the parts equipped on the right and left sides.

SRS – 

SRS Service Precautions

52B-4

SRS SERVICE PRECAUTIONS

1.

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.

2.

Do not use any electrical test equipment on
or near SRS components, except those
specified on P.52B-7.

3.

Never Attempt to Repair the Following
Components:

D

SRS air bag control unit (SRS-ECU)

D

Front impact sensor

D

Clock spring

D

Driver’s and front passenger’s air bag
modules

D

Side air bag module

D

Side impact sensor

D

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 COM-
PONENTS SERVICE procedures in this
manual. (Refer to P.52B-30.)

4.

After disconnecting the negative (–) battery cable, wait
60 seconds at least before any service and insulate
the disconnected cable with tape. The SRS retain
enough voltage to deploy the air bag for a short time
even after disconnection of the battery. So, serious
injury may result by accidental air bag deployment
if a work is done on the SRS just after the disconnection
of the battery.

5.

Do not attempt to repair the wiring harness connectors
of the SRS. If the connector(s) are diagnosed as defective,
replace the wiring harness(es). If the harness(es) are
diagnosed as faulty, replace or repair the wiring
harness(es) according to the following table.

Insulating tape

Battery

SRS-ECU connector

SRS – 

SRS Service Precautions

52B-5

SRS-ECU
Terminal No.

Destination of harness

Corrective action

1, 2, 3, 4

Instrument panel wiring harness 

 Front wiring harness 

 Front

impact sensor

Repair or replace each wiring
harness.

7

Instrument panel wiring harness 

 Earth

8

Instrument panel wiring harness 

 Combination meter 

(SRS warning lamp)

9, 10

Instrument panel wiring harness 

 Front passenger’s air bag

module

11, 12

Instrument panel wiring harness 

 Clock spring 

 Driver’s air bag

module

Repair or replace the dash wiring
harness. Replace clock spring.

13

Instrument panel wiring harness 

 Junction block (fuse No.8)

Repair or replace each wiring
harness

16

Instrument panel wiring harness 

 Junction block (fuse No.6)

harness.

20

Instrument panel wiring harness 

 Diagnosis connector

21, 22

Body wiring harness 

 Side air bag module (L.H.)

23, 24

Body wiring harness 

 Side air bag module (R.H.)

27, 28

Body wiring harness 

 Seat belt with pre-tensioner (R.H.)

29, 30

Body wiring harness

 Seat belt with pre-tensioner (L.H.)

34, 35, 36

Body wiring harness 

 Side impact sensor (L.H.)

40, 41, 42

Body wiring harness 

 Side impact sensor (R.H.)

6.

Inspection of the SRS-ECU harness connector should be carried out by the following procedure.
Insert the special tool (probe, MB991222, in the harness set) into connector from harness side (rear
side), and connect the tester to this probe. If any tool than special is used, damage to the harness
and other components will result. Furthermore, measurement should not be carried out by touching
the probe directly against the terminals 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 cause drops in reliability.

MB991222

SRS-ECU harness connector

SRS-ECU harness connector (rear view)

SRS – 

SRS Service Precautions/Special Tools

52B-6

7.

SRS components and seat belt with pre-tensioner should not be subjected to heat, so remove the
front impact sensor, SRS-ECU, air bag module (driver’s side and front passenger’s side), clock spring,
side impact sensors, front seat assemblies (side air bag module), and seat belts with pre-tensioner
before drying or baking the vehicle after painting.

D

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

_

C or more

D

Seat belt with pre-tensioner: 90

_

C or more

8.

Whenever you finish servicing the SRS, check warning lamp operation to make sure that the system
functions properly. (Refer to P.52B-8.)

9.

Make certain that the ignition switch is OFF when the MUT-

II

 is connected or disconnected.

10. If you have any questions about the SRS, please contact your local distributor.

NOTE
SERIOUS INJURY CAN RESULT FROM UNINTENDED AIR BAG DEPLOYMENT, SO USE ONLY
THE PROCEDURES AND EQUIPMENT SPECIFIED IN THIS MANUAL.

SPECIAL TOOLS

Tool

Number

Name

Use

MB991502

MUT

-II

 sub 

assembly

D

Reading diagnosis codes

D

Erasing diagnosis code

D

Reading trouble period

D

Reading erase times

MB991613

SRS check 
harness

Checking the SRS electrical circuitry

A

B

C

D

MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222

Harness set
A: Check harness
B: LED harness
C: LED harness

adapter

D: Probe

Checking the continuity and measuring the
voltage at

 

the SRS

-

ECU harness connector

MB990803

Steering wheel 
puller

Steering wheel removal

 

 

 

 

 

 

 

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