Mitsubishi Montero (2004+). Manual - part 1219

FRONT IMPACT SENSORS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-211

FRONT IMPACT SENSORS

REMOVAL AND INSTALLATION

M1524001500311

WARNING

•

Never repair or disassemble the front impact sensor. If faulty, replace it. 

•

Handle the front impact sensors very carefully, taking care not to drop them or otherwise 
a new one is required.

•

Replace the sensors with new ones after the air bag has deployed.

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

ACX00596

ACX00583

2

3

1

4.9 ± 1.0 N·m
43 ± 8 in-lb

AC

REMOVAL STEPS

<<A>>

1.

NEGATIVE (-) BATTERY CABLE 
CONNECTION

2.

RESERVE TANK

3.

FRONT IMPACT SENSOR

INSTALLATION STEPS

>>A<<

•

PRE-INSTALLATION 
INSPECTION

>>B<<

3.

FRONT IMPACT SENSOR

2.

RESERVE TANK

1.

NEGATIVE (-) BATTERY CABLE 
CONNECTION

>>C<<

•

POST-INSTALLATION 
INSPECTION

FRONT IMPACT SENSORS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-212

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-18

).

WARNING

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

Disconnect the negative (

−) battery cable from the battery and 

tape the terminal to prevent accidental connection and air 
bag(s) deployment.

INSTALLATION SERVICE POINTS

.

>>A<<PRE-INSTALLATION INSPECTION
When a new front impact sensor is installed, refer to the previ-
ous item  "INSPECTION."

.

>>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 "ON" position.

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC

ACX00588

FENDER SHIELD
PANEL

FRONT IMPACT SENSOR

AB

FRONT IMPACT SENSORS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-213

3. Does the "SRS" warning light illuminate for approximately 

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

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

If no, consult page 

P.52B-22

.

INSPECTION

M1524001600288

WARNING

If a dent, crack, deformation or rust is detected, 
replace with a new sensor. 

1. Check the front impact sensor for dents, cracks, deformation 

or rust. 

WARNING

Always replace the sensor with a new one of the 
resistance is not within the standard value.

2. Measure the resistance between the terminals and check 

whether it is within the standard value.

Standard value: 820 

± 82 Ω

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

AC204205AB

FRONT IMPACT SENSORS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-214

3. Check for continuity between the terminal and the bracket.

When there is continuity, it shows insufficient insulation of 
the sensor. Replace the sensor with a new one.

4. Deformation and rust on the headlight support panel.

ACX00598AB