Mitsubishi 380. Manual - part 827

FRONT IMPACT SENSORS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-232

REMOVAL SERVICE POINT

.

<<A>>NEGATIVE (-) BATTERY CABLE DISCON-
NECTION

DANGER

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

P.52B-16

).

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 installing the new front impact sensor, refer to "INSPEC-
TION."

.

>>B<<FRONT IMPACT SENSOR INSTALLATION

WARNING

The SRS may not 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 indicated by the arrow on the label, and install 
it securely.

.

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC

FRONT IMPACT SENSORS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-233

>>C<<POST-INSTALLATION INSPECTION

1. Reconnect the negative (-) battery cable.

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

seven seconds, and go out?

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

If not, consult page 

P.52B-20

.

INSPECTION

M1524001600277

WARNING

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

NOTE: For checking of the front impact sensor other than 
described below, refer to the section concerning SRS diagnosis 
(Refer to 

P.52B-21

).

1. Check the front impact sensor and bracket for dents, cracks 

or deformation.

2. Check the connector for damage, and terminals for defor-

mation.

3. Check that there is no bending or corrosion in the radiator 

support pannel.

35DB113A

SRS 
WARNING 
LAMP

SRS CONTROL UNIT (SRS-ECU)

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-234

SRS CONTROL UNIT (SRS-ECU)

M1524002100413

REMOVAL AND INSTALLATION

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 here 

P.52B-224

.

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

52DB025A

7.5 ± 2.5 N·m
67 ± 22 in-lb

2

1

REMOVAL STEPS

<<A>>

1.

NEGATIVE (

−) BATTERY CABLE 

CONNECTION

•

FLOOR CONSOLE ASSEMBLY 
(REFER TO GROUP 52A, FLOOR 
CONSOLE ASSEMBLY 

P.52A-10

)

•

FRONT SEAT ASSEMBLY 
(REFER TO GROUP 52A, FRONT 
SEAT ASSEMBLY 

P.52A-21

)

•

FRONT SCUFF PLATE, COWL 
SIDE TRIM (REFER TO GROUP 
52A,  TRIMS 

P.52A-11

)

•

FLOOR CARPET

•

REAR HEATER DUCT A, B (where 
fitted) (REFER TO GROUP 55A,  
DUCTS )

REMOVAL STEPS (Continued)

SRS CONTROL UNIT (SRS-ECU)

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-235

REMOVAL SERVICE POINTS

.

<<A>> NEGATIVE (

−) BATTERY CABLE DISCON-

NECTION

DANGER

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

P.52B-16

).

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 deployment.

.

<<B>> SRS-ECU REMOVAL

Remove the SRS-ECU with 10mm slide head handle and 
10mm socket wrench.

<<B>>

2.

SRS-ECU

3.

SRS-ECU BRACKET
INSTALLATION STEPS

3.

SRS-ECU BRACKET

>>A<<

2.

SRS-ECU

•

REAR HEATER DUCT A, B (where 
fitted) (REFER TO GROUP 55A,  
DUCTS )

•

FLOOR CARPET

•

FRONT SCUFF PLATE, COWL 
SIDE TRIM (REFER TO GROUP 
52A,  TRIMS 

P.52A-11

)

•

FRONT SEAT ASSEMBLY 
(REFER TO GROUP 52A, FRONT 
SEAT ASSEMBLY 

P.52A-21

)

•

FLOOR CONSOLE ASSEMBLY 
(REFER TO GROUP 52A, FLOOR 
CONSOLE ASSEMBLY 

P.52A-10

)

1.

NEGATIVE (

−) BATTERY CABLE 

CONNECTION

>>B<<

•

POST-INSTALLATION 
INSPECTION

REMOVAL STEPS (Continued)

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC