Mitsubishi Montero (2004+). Manual — part 1218
POST-COLLISION DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-207
REPAIR PROCEDURE
.
WHEN FRONT AIR BAGS DEPLOY IN A COLLISION.
1. Replace the following parts with new ones.
• Front impact sensor (Refer to
).
• SRS-ECU (Refer to
• Air bag modules (Refer to
• Seat belt with pre-tensioner (Refer to
2. Check the following parts and replace if there are any
malfunctions.
• Clock spring (Refer to
• Steering wheel, steering column and shaft assembly
(1) Check the wiring harness (built into the steering wheel)
and connectors for damage, and terminals for
deformation.
(2) Install the air bag module to check fit or alignment with
the steering wheel.
(3) Check the steering wheel for noise, binds or difficult
operation and excessive free play.
(4) Check the collision energy absorbing mechanism on the
steering column shaft (Refer to GROUP 37A, On-vehicle
Service
− Steering Column Shaft Assembly Shock
Absorbing Mechanism Check
3. Check the wiring harnesses for binding, the connectors for
damage, poor connections, and the terminals for
deformation (Refer to
).
.
WHEN SIDE AIR BAGS DEPLOY IN A COLLISION.
1. Replace the following parts with new ones.
• SRS-ECU (Refer to
• Side impact sensors (Refer to
).
• Front seatback assembly (Refer to GROUP 52A, Front Seat
).
2. Check the wiring harnesses for binding, the connectors for
damage, poor connections, and the terminals for
deformation (Refer to
).
.
WHEN AIR BAGS DO NOT DEPLOY IN LOW-SPEED
COLLISION.
Check the SRS components. If the SRS components are show-
ing any visible damage such as dents, cracks, or deformation,
replace them with new ones. Concerning parts removed for
inspection, replacement with new parts and cautionary points
for working, refer to appropriate INDIVIDUAL COMPONENT
SERVICE,
.
POST-COLLISION DIAGNOSIS
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-208
FRONT IMPACT SENSORS
1. Check the headlight support panel for distortion and rust.
2. Check the front impact sensor for dents, cracks, deformation
or rust.
3. Check the front impact sensor wiring harnesses for binding,
check the connector for damage, and check the terminals
for deformation.
.
SRS-ECU
1. Check the SRS-ECU case and brackets for dents, cracks or
deformation.
2. Check the connector for damage, and the terminals for
deformation.
3. Check the fit of the SRS-ECU and its bracket.
.
AIR BAG MODULES
1. Check the pad cover for dents, cracks or deformation.
2. Check the connector for damage, terminals deformities, and
the harness for binding.
3. Check the air bag inflator case for dents, cracks or
deformities.
4. Install the air bag module (driver's side) to the steering
wheel to check fit or alignment with the steering wheel.
5. Install the air bag module (front passenger's side) to the
instrument panel and front deck crossmember to check fit or
alignment.
.
ACX00588
FENDER SHIELD
PANEL
FRONT IMPACT SENSOR
AB
ACX00587AB
SRS-ECU
ACX00589
INFLATOR
CASE
INFLATOR
CASE
CONNECTOR
CONNECTOR
DRIVER'S
SIDE
PASSENGER'S
SIDE
AB
POST-COLLISION DIAGNOSIS
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-209
FRONT SEATBACK ASSEMBLY (SIDE-AIRBAG MODULE)
1. Check that there is no abnormality in the side-airbag module
deployment section.
2. Check that there is no connector damage, bent terminals or
clamping of the harness.
.
CLOCK SPRING
1. Check the clock spring connectors and protective tube for
damage, and the terminals for deformation.
2. Visually check the case for damage.
.
SIDE IMPACT SENSOR
1. Check that there is no bending or corrosion in the center
pillar.
2. Check that there is no denting, breakage or bending of the
side impact sensor.
3. Check that there is no clamping of the harness, connector
damage or bent terminals.
NOTE: The illustration at left shows the side impact sensor
(RH). The position of the side impact sensor (LH) is symmet-
rical to this.
.
STEERING WHEEL, STEERING COLUMN AND SHAFT
ASSEMBLY
1. Check the wiring harness (built into the steering wheel) and
the connectors for damage, and the terminals for
deformation.
2. Install the air bag module to check fit or alignment with the
steering wheel.
3. Check the steering wheel for noise, binding or difficult
operation and excessive free play.
4. Check the collision energy absorbing mechanism on the
steering column shaft (Refer to GROUP 37A, On-vehicle
Service
− Steering Column Shaft Assembly Shock
Absorbing Mechanism Check
ACX00590 AB
SIDE-AIRBAG MODULE
DEPLOYMENT MODULE
AC304044
CASE
PROTECTIVE
TUBES
AD
ACX00591
CENTER
PILLAR
FORWARD
AB
SIDE IMPACT
SENSOR
INDIVIDUAL COMPONENT SERVICE
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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-210
.
SEAT BELT WITH PRE-TENSIONER
1. Check the seat belt for damage or deformation.
2. Check the seat belt with pre-tensioner for cracks or
deformation.
3. Check that the unit is installed correctly to the vehicle body.
.
HARNESS CONNECTOR (FRONT WIRING HARNESS,
INSTRUMENT PANEL WIRING HARNESS AND FLOOR
WIRING HARNESS)
Check the harnesses for binding, the connectors for damage,
poor connection, and the terminals for deformation (Refer to
).
INDIVIDUAL COMPONENT SERVICE
M1524002900389
WARNING
•
If heat damage may occur during paint work, remove the SRS-ECU, the air bag modules,
the clock spring, the front seats and the seat belt with pre-tensioner. Recheck the SRS
system operability after reinstalling them (Refer to GROUP 00, Maintenance Service-SRS
Maintenance
).
•
SRS-ECU, air bag module, clock spring, front impact sensor, side impact sensor: 93
°
C
(200
°
F) or more
•
Seat belt with pre-tensioner: 90
°
C (194
°
F) or more
•
If the SRS components are removed for the purpose of check, sheet metal repair, painting,
etc, they should be stored in a clean, dry place until they are reinstalled.
If the SRS components are to be removed or replaced as a result of maintenance, diagnosis, etc., follow the
appropriate procedure in this section. (Front impact sensor: refer to
, SRS-ECU: refer to
, Air Bag Modules and Clock Spring: refer to
, Side impact sensor: refer to
,
Seat Belt with Pre-tensioner: refer to
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