Mitsubishi Galant. Manual - part 593

INTRODUCTION

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-13

AC002972

INTRODUCTION

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-14

COMPONENT LOCATION

AC003193AB

DATA LINK CONNECTOR

SIDE IMPACT SENSOR

SIDE IMPACT
SENSOR

CENTER
PILLAR

FRONT
OF
VEHICLE

SRS-ECU

SERVICE PRECAUTIONS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-15

SERVIC E PR ECA UTIO NS

M1524000300080

WARNING

•

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.

•

After disconnecting the battery cable, wait 60 
seconds 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 disconnected.

•

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-61

.

•

Never Attempt to Repair the Following 
Components: SRS-ECU, Clock Spring, Air Bag 
Module, Side Impact Sensor. If any of these 
components are diagnosed as faulty, they should 
only be replaced, in accordance with the 
INDIVIDUAL COMPONENT SERVICE procedures in 
this manual, starting on page 

P.52B-65

.

•

Do not attempt to repair the wiring harness 
connectors 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.

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC

AC002967AB

SRS-ECU CONNECTOR
<VEHICLES WITHOUT SRS SIDE AIR BAG>

<VEHICLES WITH SRS SIDE AIR BAG>

SRS-ECU TERMINAL 
NO.

DESTINATION OF HARNESS

CORRECTIVE ACTION

3

Body wiring harness

→

 Ground

Correct or replace the body wiring 
harness.

4

Body wiring harness 

→

 Instrument 

panel wiring 

→

 SRS warning light

Correct or replace each wiring harness.

5, 6

Body wiring harness 

→

 Air bag module 

(Front passenger's side)

Correct or replace the body wiring 
harness.

SERVICE PRECAUTIONS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-16

NOTE: *Vehicles with side air bags

WARNING

•

Inspection of the SRS-ECU connector harness 
should be carried out by the following procedure. 
Insert the backprobing tool into connector from 
harness side, and connect the tester to 
backprobing tool. If any tool other than 
backprobing tool is used, it may cause damage to 
the harness and other components. Furthermore, 
measurement should not be carried out by 
touching the backprobing tool directly against the 
terminals from the front of the connector. The 
terminals are plated to increase their conductivity, 
so if they are touched directly by the backprobing 
tool, the plating may break, which will decrease 
reliability.

•

The SRS components should not be subjected to 
heat over 93

°°°°

C(200

°°°°

F

),),),),

 so remove the SRS-ECU, air 

bag module, and clock spring before drying or 
baking the vehicle after painting.

•

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

P.52B-3

.)

•

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

•

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

7, 8

Body wiring harness 

→

 Clock spring 

→

 

Air bag module (Driver's side)

Correct or replace each wiring harness. 
Replace the clock spring.

9

Body wiring harness 

→

 Junction block 

(fuse No.5)

Correct or replace the body wiring 
harness.

12

Body wiring harness 

→

Junction block 

(fuse No.13)

Correct or replace the body wiring 
harness.

16

Body wiring harness 

→

 Data link 

connector

Correct or replace the body wiring 
harness.

21*, 22*

Body wiring harness 

→

 Side air bag 

module (LH)

Correct or replace the body wiring 
harness.

23*, 24*

Body wiring harness 

→

 Side air bag 

module (RH)

Correct or replace the body wiring 
harness.

34*, 35*, 36*

Body wiring harness 

→

 Floor wiring 

harness 

→

 Side impact sensor (LH)

Correct or replace each wiring harness.

40*, 41*, 42*

Body wiring harness 

→

 Floor wiring 

harness 

→

 Side impact sensor (RH)

Correct or replace each wiring harness.

SRS-ECU TERMINAL 
NO.

DESTINATION OF HARNESS

CORRECTIVE ACTION

AC003072

SRS-HARNESS CONNECTOR

SRS-ECU HARNESS CONNECTOR
(REAR SIDE)

AB