Mitsubishi Montero (2002-2004). Manual - part 774

FRONT IMPACT SENSORS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52Ba-29

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.52Bb-3

.

INSPECTION

M1524001600147

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)

52Ba-30

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

SRS CONTROL UNIT (SRS-ECU)

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52Ba-31

SRS CONTROL UNIT (SRS-ECU)

REMOVAL AND INSTALLATION

M1524002100275

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.

•

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.52Ba-22

. 

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

• Front Floor Console Removal (Refer to GROUP 52A, 

Floor Console 

P.52A-7

 .)

Post-installation Operation 
• Front Floor Console Installation (Refer to GROUP 52A, 

Floor Console 

P.52A-7

.) 

ACX01413

ACX00583

AC

2

3

4

5

4.9 ± 1.0 N·m
43 ± 8 in-lb

4.9 ± 1.0 N·m
43 ± 8 in-lb

4.9 ± 1.0 N·m
43 ± 8 in-lb

1

REMOVAL STEPS

<<A>>

1.

NEGATIVE (

−) BATTERY CABLE 

CONNECTION

2.

TRANSFER-ECU

3.

CONNECTOR BRACKET

4.

BRACKET MOUNTING BOLT 
(GROUNDING BOLT)

5.

SRS-ECU

INSTALLATION STEPS

>>A<<

5.

SRS-ECU

>>B<<

4.

BRACKET MOUNTING BOLT 
(GROUNDING BOLT)

3.

CONNECTOR BRACKET

2.

TRANSFER-ECU

1.

NEGATIVE (-) BATTERY CABLE 
CONNECTION

>>C<<

•

POST-INSTALLATION 
INSPECTION

SRS CONTROL UNIT (SRS-ECU)

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52Ba-32

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.52Ba-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

WARNING

The SRS may not activate if the SRS-ECU is not 
installed properly, which could result in serious injury 
or death to the vehicle's driver or front passenger.

.

>>B<< Attachment of bracket mounting bolt (Grounding 
bolt)
Check the head mark "E" on the bolt and attach the grounding 
bolt.

.

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC

ACX00599AB

EARTH BOLT HEAD MARK