Mitsubishi 380. Manual - part 771

GENERAL DESCRIPTION

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-8

L

DANGER: SEAT BELT PRETENSIONER
CAUTION: THIS ASSEMBLY CONTAINS AN EXPLOSIVE INITIATOR
FLAMMABLE MATERIAL
TO PREVENT PERSONAL INJURY

• DO NOT IMPACT, DISMANTLE OR INSTALL IT INTO ANOTHER VEHICLE.

• SERVICE OR DISPOSE OF IT AS DIRECTED IN THE REPAIR MANUAL.

M

CAUTION: 
DO NOT DISASSEMBLE OR DROP.

N

WARNING
THIS VEHICLE HAS AN AIR BAG SYSTEM.
REFER TO SERVICE MANUAL BEFORE SERVICING OR DISASSEMBLING 
UNDERHOOD COMPONENTS.
READ THE "SRS" SECTION OF MANUAL FOR IMPORTANT INSTRUCTIONS.
IMPROPER SERVICE PROCEDURES CAN RESULT IN THE AIR BAG FIRING OR 
BECOMING INOPERATIVE, POSSIBLY LEADING TO INJURY.

LABEL CONTENTS

GENERAL DESCRIPTION

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-9

SCHEMATIC

SIDE

IMPACT

SENSOR

(LH)

SIDE

IMPACT

SENSOR

(RH)

DATA LINK CONNECTOR

(FOR SCAN TOOL)

ON

ON

OFF

ON

OFF

OFF

CONNECTOR

LOCK SWITCH*

IGNITION SWITCH (IG1)

No.22

7.5A

No.23

7.5A

DRIVER'S

AIR BAG

MODULE

CLOCK 

SPRING

ON

OFF

OFF

OFF

ON

ON

PASSENGER'S 

(FRONT) AIR BAG 

MODULE

OFF

ON

OFF

ON

CONNECTOR

LOCK SWITCH*

OFF

ON

OFF

ON

CONNECTOR

LOCK SWITCH*

SEAT BELT

PRE-TENSIONER

(LH)

SEAT BELT

PRE-TENSIONER

(RH)

OFF

ON

OFF

ON

CONNECTOR

LOCK SWITCH*

SIDE-AIRBAG

MODULE (LH)

SIDE-AIRBAG

MODULE (RH)

OFF

ON

OFF

ON

CONNECTOR

LOCK SWITCH*

OFF

ON

OFF

ON

CONNECTOR

LOCK SWITCH*

CONNCTOR LOCK

SWITCH*

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

CONNCTOR LOCK

SWITCH*

 

SRS-ECU

CONNECTOR

LOCK SWITCH*

OFF

ON

OFF

ON

ON

OFF

ON

OFF

ON

OFF

OFF

OFF

ON

ON

ON

OFF

ON

OFF

ON

OFF

FRONT 

IMPACT

SENSOR

(LH)

FRONT 

IMPACT

SENSOR

(RH)

CAN BUS 

LINE

COMBINATION METER

GENERAL DESCRIPTION

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-10

SRS AIR BAG SPECIAL CONNECTOR

To enhance the system reliability, a connector lock 
switch is integrated in the SRS-ECU connector, the 
air bag module connectors, the clock spring connec-
tor, the seat belt pretensioner connectors (black con-
nector "A" shown in the illustration below).

.

AC401872

SRS-ECU

A

A

A

AB

SIDE-AIRBAG MODULE
(LH)

SEAT BELT WITH
PRE-TENSIONER
(DRIVER'S SIDE)

CLOCK
SPRING

DRIVER'S AIR BAG MODULE

PASSENGER'S (FRONT) 
AIR BAG MODULE

SEAT BELT WITH
PRE-TENSIONER
(FRONT PASSENGER'S
SIDE)

SIDE-AIRBAG MODULE
(RH)

GENERAL DESCRIPTION

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-11

SQUIB CIRCUIT CONNECTOR LOCK 
SWITCH

The switch is a mechanism that shorts the power 
supply terminal to the ground terminal automatically 
in the air bag squib circuit when the connector is dis-
connected. A "short" spring is integrated inside the 
connector. This spring prevents static electricity from 
flowing to the squib by shorting the power supply ter-
minal to the ground terminal (i.e. there is no potential 
difference between the two terminals).

CAUTION

When the connector is disconnected, there will 
be short circuit between the terminals. This is not 
a fault.

AC006197

OFF

ON

OFF

ON

SQUIB

SRS-ECU

SQUIB

SRS-ECU

OFF

OFF

ON

ON

A

A

CONNECTOR DISCONNECTED

<CONNECTOR SHORTING MECHANISM (E.G. SRS-ECU CONNECTOR)>

ECU-SIDE CONNECTOR

WIRING HARNESS-SIDE CONNECTOR

TERMINAL
(MALE)

PARTITION 
PANEL

B

B

SHORT SPRING

SHORT SPRING

AG

SECTION B - B

SHORT
SPRING

SECTION A - A

CONNECTOR CONNECTED

TERMINAL
(MALE)

TERMINAL
(MALE)

PARTITION 
PANEL

PARTITION PANEL

TERMINAL
(FEMALE)

TERMINAL
(FEMALE)

TERMINAL
(FEMALE)

CONNECTOR CONNECTED