Mitsubishi Montero Sport (2004+). Manual - part 752

POST-COLLISION DIAGNOSIS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-77

Steering wheel, steering column and intermediate joint
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 steering column shaft shock absorbing 

mechanism (Refer to GROUP 37A, On-Vehicle Service 

− 

Steering Column Shaft Assembly Shock Absorbing 
Mechanism Check 

P.37A-23

).

.

Harness connector (front wiring harness, body wiring 
harness)
Check the harnesses for binding, the connectors for damage, 
poor connection, and the terminals for deformation. (Refer to 

P.52B-17

.)

.

Seat belt with pre-tensioner
1. Check the seat belt for damage or deformation.
2. Check the seat belt pre-tensioner for cracks or deformation.
3. Check that the unit is installed correctly to the vehicle body.

INDIVIDUAL COMPONENT SERVICE

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-78

INDIVIDUAL COMPONENT SERVICE

M1524002900215

WARNING

•

If heat damage may occur during paint work, remove the SRS-ECU, the air bag module, 
the clock spring, the front impact sensor, the seat belt pre-tensioner. Recheck the SRS 
system operability after reinstalling them. (Refer to GROUP 00, Maintenance Service-SRS 
Maintenance 

P.00-60

.)

•

SRS-ECU, air bag module, clock spring, front 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 

P.52B-79

, SRS Air Bag Control Unit: 

refer to 

P.52B-82

, Air Bag Modules and Clock Spring: refer to 

P.52B-84

, Seat Belts with Pre-tensioner: refer 

to 

P.52B-93

.)

FRONT IMPACT SENSORS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-79

FRONT IMPACT SENSORS

M1524001500322

WARNING

•

Never attempt to disassemble or repair the SRS-ECU. If faulty, replace it.

•

Do not drop or subject the SRS-ECU to impact or vibration. If denting, cracking, deforma-
tion, or rust are discovered in the SRS-ECU, replace it with a new SRS-ECU. Discard the 
old one.

•

After deployment of an air bag, replace the SRS-ECU with a new one.

•

Never use an ohmmeter on or near the SRS-ECU, and use only the special test equipment 
described on 

P.52B-73

.

REMOVAL AND INSTALLATION

Pre-removal Operation
• Turn the ignition switch to the "LOCK" (OFF) position.

AC003309

1

2

FENDER
SHIELD
PANEL

FORWARD

2

2

4.9 N·m
43 in-lb

AB

REMOVAL STEPS

<<A>>

1.

NEGATIVE (

−) BATTERY CABLE 

CONNECTION

2.

FRONT IMPACT SENSOR

INSTALLATION STEPS

>>A<<

•

PRE-INSTALLATION 
INSPECTION

>>B<<

2.

FRONT IMPACT SENSOR

1.

NEGATIVE (

−) BATTERY CABLE 

CONNECTION

>>C<<

•

POST-INSTALLATION 
INSPECTION

FRONT IMPACT SENSORS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-80

REMOVAL SERVICE POINT

.

<<A>> NEGATIVE (

−) BATTERY CABLE DISCONNECTION

DANGER

Wait at least 60 seconds after disconnecting the bat-
tery cable before doing any further work. (Refer to 

P.52B-17

.)

WARNING

Battery posts, terminals and related accessories con-
tain lead compounds. WASH HANDS AFTER HAN-
DLING.

Disconnect the negative (

−) battery cable from the battery and 

tape the terminal to prevent accidental connection and deploy-
ment.

INSTALLATION SERVICE POINTS

.

>>A<< PRE-INSTALLATION INSPECTION
To mount the new front impact sensor, visually check it and 
measure the resistance between the terminals, Refer to 
"INSPECTION" (

P.52B-81

.)

.

>>B<< FRONT IMPACT SENSOR INSTALLATION

WARNING

The SRS may mot activate properly if a front impact 
sensor is not installed properly, which could result in 
serious injury or death to the vehicle's driver.

1. Securely connect the connector.
2. Position the front impact sensor facing toward the front of 

the vehicle as shown by the arrow on the label, and install it 
securely.

.

>>C<< POST-INSTALLATION INSPECTION
1. Reconnect the negative (

−) battery cable.

2. Turn the ignition key to the "ON" position.
3. Does the "SRS" warning light illuminate for approximately 7 

seconds, and then remain off for at least 5 seconds after 
turning "OFF?"

4. If yes, the SRS system is functioning properly.

If no, consult 

P.52B-61

.

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC

AC003310AC

CONNECTOR

LABEL

FENDER SHIELD
PANEL

FRONT IMPACT
SENSOR

FORWARD

AC003277AD

SRS WARNING LIGHT