Mitsubishi Montero (2004+). Manual — part 1167

GENERAL DESCRIPTION

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-3

GENERAL DESCRIPTION

M1524000100484

WARNING

Extreme care must be used when servicing
the SRS to avoid injury to the service per-
sonnel (by inadvertent deployment of the air
bags) or the driver (by rendering the SRS
inoperative).

The Supplemental Restraint System (SRS) 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 SRS consist of four air bag modules, SRS air
bag control unit (SRS-ECU), two front impact sen-
sors, two side impact sensors, SRS warning light,
clock spring and seat belt pre-tensioner. Air bags are
located in the center of the steering wheel, above the
glove box, and in the outside bolsters of the front

seat back assemblies. Each air bag is made up of a
folded air bag and an inflator unit. The SRS-ECU
under the floor console monitors the system and has
a front air bag safing G-sensor, front air bag analog
G-sensor and a side-airbag safing G-sensor. The
front impact sensors are assembled outside the
headlight support panel to monitor impact in case of
front impact. The side impact sensors inside the cen-
ter pillars monitor the shock incurred by the sides of
the vehicle. The warning light on the instrument
panel indicates the operational status of the SRS.
The clock spring is installed in the steering column.
The seat belt pre-tensioner is built into the driver’s
and passenger’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.

.

ONBOARD DIAGNOSTIC/SRS WARNING LIGHT FUNCTION
The diagnosis unit monitors the SRS system and stores data
concerning any detected faults in the system. When the ignition
switch is in "ON" or "START" position, the SRS warning light
should illuminate for about seven seconds and then turn "OFF."
That indicates that the SRS system is in operational order. If a
vehicle's SRS warning light is in any of the following conditions,
the SRS system must be inspected, diagnosed and serviced in
accordance with this manual.
1. The SRS warning light does not illuminate as described

above.

2. The SRS warning light stays on for more than seven

seconds.

3. The SRS warning light illuminates while driving.

ACX01667

AT

TEMP

SRS

P
R
N
D

5
4
3
2
1

x1000r/min

2

3

4

5

6

7

8

1

AB

SRS WARNING LIGHT

GENERAL DESCRIPTION

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-4

CONSTRUCTION DIAGRAM

NOTE: This construction diagram shows the general view of the SRS components. For details, refer to
"Schematic, (

P.52B-8

)" "Configuration Diagrams(

P.52B-12

)" and "Circuit Diagram. (

P.52B-13

)"

AC102669

VEHICLES
IDENTIFICATION
CODE CHART
PLATE

SRS WARNING LIGHT

AIR BAG MODULE
(DRIVER'S SIDE)

CLOCK SPRING

DATA LINK CONNECTOR
(FOR SCAN TOOL)

SRS-ECU

AIR BAG MODULE
(FRONT PASSENGER'S SIDE)

SIDE-AIRBAG
MODULE

SIDE-AIRBAG
MODULE

SIDE IMPACT
SENSOR

AC

SEAT BELT WITH PRE-TENSIONER

SRS-ECU

FRONT IMPACT
SENSOR

GENERAL DESCRIPTION

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-5

WARNING/CAUTION LABELS

A number of caution labels related to the SRS are found in the vehicle, as shown in the following illustration.
Follow label instructions when servicing SRS. The label L is not to be removed except by owner. If the other
labels are dirty or damaged, replace them.

AC204338AB

A

B

C

D

E

F

G

G

I

J

K

L*

N

M

STEERING WHEEL

AIR BAG MODULE
(DRIVER'S SIDE)

CLOCK SPRING

AIR BAG MODULE
(FRONT PASSENGER'S SIDE)

SRS-ECU

SUN VISOR

STEERING GEAR BOX

SIDE-AIRBAG MODULE(DRIVER'S
AND FRONT PASSENGER'S SEAT)

HOOD

GLOVE BOX

SIDE IMPACT SENSOR
(RH,LH)

FRONT IMPACT SENSOR
(RH,LH)

CENTER
PELLAR

SEAT BELT WITH PRE-TENSIONER

O

H

P

NOTE
*:VEHICLES FOR USA

GENERAL DESCRIPTION

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-6

LABEL CONTENTS
A

CAUTION: SRS
BEFORE REPLACING STEERING WHEEL, READ SERVICE MANUAL. THIS AIR BAG MODULE
CANNOT BE REPAIRED. DO NOT DISASSEMBLE OR TAMPER.

B

DANGER
CONTENTS ARE EXTREMELY FLAMMABLE. DO NOT PROBE WITH ELECTRICAL DEVICES
OR OTHER WISE TEMPER WITH IN ANY WAY.

C

CAUTION: SRS CLOCK SPRING
THIS IS NOT A REPAIRABLE PART. IF DEFECTIVE REPLACE ENTIRE UNIT ACCORDING TO
THE SERVICE MANUAL INSTRUCTIONS. TO RE-CENTER: ROTATE CLOCKWISE UNTIL TIGHT.
THEN ROTATE IN OPPOSITE DIRECTION ROUGHLY 3 3/4TURNS AND ALIGN ARROWS ><.

D, J

WARNING: FLAMMABLE/EXPLOSIVE
SRS AIR BAG MODULE
TO AVOID SERIOUS INJURY:

• DO NOT REPAIR, DISASSEMBLE OR TAMPER.

• AVOID CONTACT WITH FRAME OR ELECTRICITY.

• DO NO DIAGNOSIS/USE NO TEST EQPT OR PROBES.

• STORE BELOW 200°F (93°C).

• BEFORE DOING ANY WORK INVOLVING MODULE, READ SERVICE MANUAL FOR

IMPORTANT FURTHER DATA.

E, N

CAUTION:
DO NOT DISASSEMBLE OR DROP. IF DEFECT, REFER TO SERVICE MANUAL.

F

AIR BAG
WARNING
FLIP VISOR OVER

G

WARNING DEATH or SERIOUS INJURY can occur

• Children 12 and under can be killed by the air bag.

• The BACK SEAT is the SAFEST place for children.

• NEVER put a rear-facing child seat in the front.

• Sit as far back as possible from the air bag.

• ALWAYS use SEAT BELTS and CHILD RESTRAINS.

H

WARNING
Avoid Abrupt Maneuvers and Excessive Speed.
Always Buckle Up.
See Owner’s Manual For Further Information.

AC107269

AC107270