Mitsubishi Galant (2004+). Manual - part 1533

GENERAL DESCRIPTION

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-25

NOTE: The illustration above shows the front impact sensor (LH) and the side impact sensor (LH). The posi-
tion of the front impact sensor (RH) and the side impact sensor (RH) is symmetrical to this.

AC306318

AC307339

AC305362

AC305028

DATA LINK CONNECTOR

SRS-ECU

SRS-ECU

AB

SERVICE PRECAUTIONS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-26

SERVICE PRECAUTIONS

M1524000300499

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-347

.

•

Never Attempt to Repair the Following Compo-
nents: SRS-ECU, Clock Spring, Air Bag Module, 
Front impact sensor, Side Impact Sensor, Seat Belt 
with Pre-tensioner, Seat slide sensor, Front seat 
assenbly. If any of these components are diag-
nosed as faulty, they should only be replaced, in 
accordance with the INDIVIDUAL COMPONENT 
SERVICE procedures in this manual, starting on 

P.52B-353

.

•

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.

.

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC

63

55

51

69

61

66

58

65

64

56 57

68

60

67

59

70

62

53

52 B

A

54

A

B

18

10

15

7

13

5

14

6

16

8

17

9

19

11

20

12

1 2

3 4

42

31

38

27

21

41

28

39

22

30

25

47

36

33

44

34

45

37

48

26

29

23

40

32

43

35

46

24

B

A

AC3001278AB

SRS-ECU CONNECTOR

SERVICE PRECAUTIONS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-27

SRS-ECU TERMINAL 
NO.

DESTINATION OF HARNESS

CORRECTIVE ACTION

1, 2

Floor wiring harness 

→ Seat slide 

sensor

Correct or replace the floor wiring 
harness.

3

Floor wiring harness 

→ Driver’s seat 

belt switch for N/C terminal

Correct or replace the floor wiring 
harness.

4

Floor wiring harness 

→ Driver’s seat 

belt switch for COM terminal

Correct or replace the floor wiring 
harness.

7, 8

Floor wiring harness 

→ Seat belt 

pre-tensioner (LH)

Correct or replace the floor wiring 
harness.

9*, 10*

Floor wiring harness 

→ Side-airbag 

module (LH)

Correct or replace the floor wiring 
harness.

18

Floor wiring harness 

→ Driver’s seat 

belt switch for N/O terminal

Correct or replace the floor wiring 
harness.

19*, 20*

Floor wiring harness 

→ Side impact 

sensor (LH)

Correct or replace the floor wiring 
harness.

21

Floor wiring harness 

→ Instrument 

panel wiring harness 

→ Air bag off 

indicator light

Correct or replace each wiring harness.

23

Floor wiring harness 

→ Instrument 

panel wiring harness 

→ Junction block 

(fuse No.22)

Correct or replace each wiring harness.

24

Floor wiring harness 

→ Instrument 

panel wiring harness 

→ Junction block 

(fuse No.23)

Correct or replace each wiring harness.

27, 28

Floor wiring harness 

→ Instrument 

panel wiring harness 

→ Air bag module 

(Front passenger's side) <1st squib 
side>

Correct or replace each wiring harness.

30, 31

Floor wiring harness 

→ Instrument 

panel wiring harness 

→ Air bag module 

(Front passenger's side) <2nd squib 
side>

Correct or replace each wiring harness.

32

Can line

Correct or replace can line.

33, 34

Floor wiring harness 

→ Instrument 

panel wiring harness 

→ Clock spring → 

Air bag module (Driver's side) <2nd 
squib side>

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

36, 37

Floor wiring harness 

→ Instrument 

panel wiring harness 

→ Clock spring → 

Air bag module (Driver's side) <1st 
squib side>

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

38, 39

Floor wiring harness 

→ Instrument 

panel wiring harness 

→ Front wiring 

harness 

→ Front impact sensor (LH)

Correct or replace each wiring harness.

40

Floor wiring harness 

→ Ground

Correct or replace the floor wiring 
harness.

SERVICE PRECAUTIONS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-28

NOTE: *Vehicles with side-airbags

.

42

Floor wiring harness 

→ Instrument 

panel wiring harness 

→ Seat belt 

warning light

Correct or replace each wiring harness.

43

Can line

Correct or replace can line.

47, 48

Floor wiring harness 

→ Instrument 

panel wiring harness 

→ Front impact 

sensor (RH)

Correct or replace each wiring harness.

51

Floor wiring harness 

→ Passenger’s 

seat belt switch for COM terminal

Correct or replace the floor wiring 
harness.

52

Floor wiring harness 

→ Passenger’s 

seat belt switch for N/C terminal

Correct or replace the floor wiring 
harness.

57*, 58*

Floor wiring harness 

→ Side-airbag 

module (RH)

Correct or replace the floor wiring 
harness.

59, 60

Floor wiring harness 

→ Seat belt 

pre-tensioner (RH)

Correct or replace the floor wiring 
harness.

63*, 64*

Floor wiring harness 

→ Side impact 

sensor (RH)

Correct or replace the floor wiring 
harness.

65

Floor wiring harness 

→ Passenger’s 

seat belt switch for N/O terminal

Correct or replace the floor wiring 
harness.

66

Floor wiring harness 

→ Occupant 

classification sensor

Correct or replace the floor wiring 
harness.

SRS-ECU TERMINAL 
NO.

DESTINATION OF HARNESS

CORRECTIVE ACTION