Mitsubishi L200. Manual - part 583

The driver’s and passenger’s air bag and seat belt
with pre-tensioner is designed to supplement the
driver's and front passenger's seat belts to help
reduce the risk or severity of injury to the driver and
front passenger by activating and deploying both
front air bags in certain frontal collisions. The side-air
bag and the curtain air bag are activated when an
impact exceeds the threshold upon a side collision,
and inflates to protect the heads of the occupants in
the front and rear seats.
The Supplemental Restraint System (SRS) consists
of air bag modules, SRS air bag control unit (SRS-
ECU), front impact sensors, side impact sensor, SRS
warning lamp, clock spring, passenger’s air bag cut
off switch, passenger’s air bag cut off indicator lamp
and seat belt with pre-tensioner. Front air bags are
located in the centre of the steering wheel and above
the glove box. Side-airbags are located inside the
front seatback assemblies. The curtain air bag mod-
ule is installed in the roof side sections (from the

driver's and the passenger's front pillars to the rear
pillars). Each air bag is made up of a folded air bag
and an inflator unit. The SRS-ECU is mounted on the
front of the floor console and has a front air bag saf-
ing G-sensor, front air bag analogue G-sensor. The
front impact sensor is installed out side of the head-
lamp support panel. The side impact sensor is
installed in the lower parts of the centre pillars. The
warning lamp on the instrument panel indicates the
operational status of the SRS. The clock spring is
installed in the steering column. The passenger’s air
bag cut off switch is located above inside the glove
box. The passenger’s air bag cut off indicator lamp is
located above the centre upper panel. The seat belt
pre-tensioner is built into the driver's and passen-
ger's front seat belt retractor.
Only authorized service personnel should do work on
or around the SRS components. Those service per-
sonnel should read this manual carefully before start-
ing any such work.

AC900651

Driver's air bag
module

Passenger's (front)
air bag module

SRS-ECU

Clock spring

SRS warning lamp

<A/T>

<M/T>

SRS warning lamp

Passenger's air bag
cut off indicator lamp

Passenger's air bag
cut off switch

Front impact sensor

SRS-ECU

Side impact sensor

Curtain air bag module

Side-airbag module

Seat belt pre-tensioner

SERVICE PRECAUTIONS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-5

SERVICE PRECAUTIONS

M1524000301867

DANGER

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.

CAUTION

Do not use any electrical test equipment on or
near SRS components, except those specified on

P.52B-11

CAUTION

Never attempt to repair the following compo-
nents:

1. SRS-ECU

2. Front impact sensor
3. Clock spring
4. Driver's and passenger's (front) air bag mod-

ules

5. Seat belt with pre-tensioner
6. Side impact sensor
7. Front seatback assembly incorporating side-

airbag module

8. Curtain air bag module

NOTE: If any of these components are diagnosed as
faulty, they should only be replaced, in accordance
with the INDIVIDUAL COMPONENTS SERVICE pro-
cedures in this manual, starting at page

P.52B-261

AC800836

SRS-ECU connector

SERVICE PRECAUTIONS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-6

CAUTION

Do not attempt to repair the wiring harness con-
nectors of the SRS. If a defective wiring harness
is found, repair or replace it by referring to the
table below.
<Vehicle without side-airbag and curtain air bag>

SRS-ECU terminal No.

Destination of harness

Remedy

1, 2

Instrument panel wiring harness

→

Front wiring harness

→ Front impact

sensor (RH)

Correct or replace each wiring harness.

3, 4

Instrument panel wiring harness

→

Front wiring harness

→ Front impact

sensor (LH)

Correct or replace each wiring harness.

Instrument panel wiring harness

→

SRS warning lamp

Correct or replace the Instrument panel
wiring harness.

9, 10

Instrument panel wiring harness

→

Passenger's air bag cut off switch

→

Passenger's (front) air bag module

Correct or replace the instrument panel
wiring harness.

11, 12

Instrument panel wiring harness

→

Clock spring

→ Driver's air bag module

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

Instrument panel wiring harness

→

Junction block (fuse No.21)

Correct or replace the instrument panel
wiring harness.

Instrument panel wiring harness

→

Junction block (fuse No.15)

Correct or replace the instrument panel
wiring harness.

Instrument panel wiring harness

→

Earth

Correct or replace the instrument panel
wiring harness.

Instrument panel wiring harness

→

Diagnosis connector

Correct or replace the instrument panel
wiring harness.

27, 28

Instrument panel wiring harness

→

Floor wiring harness

→ Seat belt pre-

tensioner (passenger’s side)

Correct or replace each wiring harness.

29, 30

Instrument panel wiring harness

→

Floor wiring harness

→ Seat belt pre-

tensioner (driver’s side)

Correct or replace each wiring harness.

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