Mitsubishi Evolution X. Manual — part 644

GENERAL INFORMATION

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-23

SEAT BELT
SWITCH
PASSENGER'S
SIDE

CENTER
PANEL
UNIT

ETACS-ECU

(FUSE )

12

INTERFACE
CIRCUIT

SRS-ECU

AIR BAG OFF
INDICATOR
LIGHT
PASSENGER'S
SIDE

HALL IC

SEAT BELT WARNING
TOME ALARM

GENERAL INFORMATION

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-24

COMPONENT LOCATION

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.

AC605324

AC605641

AC605684

AC708928

AC608583

AB

Driver's air bag module

Clock spring

Passenger's (front) air bag module

Data link connector

SRS-ECU

Side impact sensor

Front impact sensor

Side-airbag module

Seat belt
pre-tensioner

Occupant
classification-
ECU

Seat slide
sensor

Weight
sensor

Knee air bag module

Weight
sensor

SERVICE PRECAUTIONS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-25

SERVICE PRECAUTIONS

M1524000301339

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-370

.

•

Never Attempt to Repair the Following Compo-
nents: SRS-ECU, Clock Spring, Air Bag Modules,
Front impact sensor, Side Impact Sensor, Seat Belt
with Pre-tensioner. 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

P.52B-377

.

•

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 cable

Battery

AF

AC506921

SRS-ECU connector

AC

SERVICE PRECAUTIONS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-26

SRS-ECU terminal No.

Destination of harness

Corrective action

1, 2

Instrument panel wiring harness

→ Knee

air bag module

Correct or replace the instrument panel
wiring harness.

5, 6

Instrument panel wiring harness

→

Clock spring

→ Driver's air bag module

1st squib side

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

7, 8

Instrument panel wiring harness

→

Passenger's (front) air bag module 1st
squib side

Correct or replace the instrument panel
wiring harness.

9, 10

Instrument panel wiring harness

→

Clock spring

→ Driver's air bag module

2nd squib side

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

11, 12

Instrument panel wiring harness

→

Passenger’s (front) air bag module 2nd
squib side

Correct or replace the instrument panel
wiring harness.

15, 16

CAN line

Correct or replace CAN line.

17

Instrument panel wiring harness

→

Ground

Correct or replace the instrument panel
wiring harness.

18

Instrument panel wiring harness

→ Air

bag OFF indicator light

Correct or replace the instrument panel
wiring harness.

21, 22

Front wiring harness

→ Instrument panel

wiring harness

→ Front impact sensor

wiring harness

→ Front impact sensor

(LH)

Correct or replace each wiring harness.

23, 24

Front wiring harness

→ Instrument panel

wiring harness

→ Front impact sensor

wiring harness

→ Front impact sensor

(RH)

Correct or replace each wiring harness.

31, 32

Floor wiring harness

→ Side-air bag

module (LH)

Correct or replace the floor wiring
harness.

33, 34

Floor wiring harness

→ Side-air bag

module (RH)

Correct or replace the floor wiring
harness.

39, 40

Floor wiring harness

→ Rear floor wiring

harness (RH)

→ Curtain air bag module

(RH)

Correct or replace each wiring harness.

41, 42

Floor wiring harness

→ Rear floor wiring

harness (LH)

→ Curtain air bag module

(LH)

Correct or replace each wiring harness.

43, 44

Floor wiring harness

→ Seat belt

pre-tensioner (RH)

Correct or replace the floor wiring
harness.

45, 46

Floor wiring harness

→ Seat belt

pre-tensioner (LH)

Correct or replace the floor wiring
harness.

49, 50

Floor wiring harness

→ Side impact

sensor (LH)

Correct or replace the floor wiring
harness.

51, 52

Floor wiring harness

→ Side impact

sensor (RH)

Correct or replace the floor wiring
harness.