Mitsubishi Evolution X. Manual - part 641

GENERAL INFORMATION

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-11

SQUIB CIRCUIT CONNECTOR LOCK SWITCH

This mechanism prevents the improper deployment 
of air bag module because of the current application 
to the squib due to the static electricity when connec-
tors between SRS-ECU and air bag modules 
(squibs) are disconnected. When the connector is 
disconnected, the short spring short circuits the 
power supply side terminal and ground side terminal 
of squibs, and prevents the static electricity from 
generating the potential difference. This connector 
mechanism is adopted for the following connectors.

• SRS-ECU connector

• Connector between the clock spring and 

body-side wiring harness

• Each air bag module connector

• Each pre-tensioner connector

• Intermediate connector between curtain air bag 

module and SRS-ECU

AC507316

SRS-ECU connector

AC

Partition panel
(SRS-ECU-side 
connector)

Partition panel

Wiring harness-side connector 
(terminal to short-circuit)

Short spring

Short spring 
(wiring harness-side 
connector)

Connector connected

Wiring harness-side connector

Terminal to short-circuit

GENERAL INFORMATION

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-12

CONFIGURATION DIAGRAMS

AC708936

A-46

A-52

ENGINE ROOM

DASH PANEL

STEERING COLUMN

C-40 C-39

C-14

C-37

C-36

C-204

C-208

D-41

D-40

D-39

D-37

D-36

D-34

D-32

D-25

D-26

FLOOR AND ROOF

LUGGAGE

F-04

F-28

AB

C-04

C-124

A-46 (Y)

Front impact sensor (LH)

A-52 (Y)

Front impact sensor (RH) 

C-04 

Combination meter

C-14 (Y)

Passenger’s (Front) air bag module

C-36 (Y)

SRS-ECU

C-37 (Y)

SRS-ECU

GENERAL INFORMATION

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-13

C-39 (B)

Knee air bag module

C-40 (B)

Date link connector

C-124

Center panel unit

C-204 (Y)

Driver’s air bag module

C-208 (Y)

Clock spring

D-25 (B)

Seat belt pre-tensioner (LH)

D-26 (Y)

Side impact sensor (LH)

D-32 (GR)

Seat slide sensor

D-34 (Y)

Side-air bag module (LH)

D-36 (Y)

Side-air bag module (RH)

D-37 (B)

Seat belt switch (Passenger’s side)

D-39

Front seat assembly (RH) (weight 
sensor, occupant 
classification-ECU)

D-40 (B)

Seat belt pre-tensioner (RH)

D-41 (Y)

Side impact sensor (RH)

F-04 (B)

Curtain air bag module (RH) 

F-28 (B)

Curtain air bag module (LH)

GENERAL INFORMATION

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-14

CIRCUIT DIAGRAM

WARNING

•

Do not repair, splice, or modify the SRS wiring (except for specific repairs to the instru-
ment panel wiring harness and the floor wiring harness shown on 

P.52B-25

): replace the 

wiring if necessary, after reading and following all precautions and procedures in this 
manual.

•

Do not use an analog ohmmeter to check the SRS wiring or components; use only the 
special tools (refer to 

P.52B-369

) and a digital multi-meter (refer to 

P.52B-28

).

CAUTION

Improper services cause the system to be inoperative. Do not disassemble or tamper with the SRS 
components to prevent the serious injury.