Mitsubishi Lancer Evolution 7. Manual — part 371
SRS - Individual Component Service/Warning/Caution Labels
52B-49
INDIVIDUAL COMPONENT SERVICE
If the SRS components and seat belt with pre-tensioner are to be removed or replaced as a result of
maintenance, troubleshooting etc., follow the service procedures that follow.
Caution
1. SRS components and seat belt with pre-tensioner should not be subjected to heat, so remove
the SRS-ECU, driver’s air bag module<RS>, steering wheel-
air bag module<RS-Ⅱ>, front
passenger’s air bag module, clock spring, and seat belt with pre-tensioner before drying or
baking the vehicle after painting.
D
Front impact sensor, SRS-ECU, Air bag module, clock spring: 93_C or more
D
Seat belt with pre-tensioner: 90_C or more
Recheck SRS system operability after re-installing them.
2. If the SRS components and seat belt with pre-tensioner 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.
WARNING/CAUTION LABELS
Caution labels on the SRS are attached in the
vehicle as shown. Follow label instructions when
servicing the SRS. If the label(s) are dirty or
damaged, replace with new one(s).
Steering wheel<RS>
Driver’s air bag module<RS>
Clock spring
Front passenger’s
air bag module
SRS-ECU
Sun visor
Steering joint cover
Glove box
Cover<RS-II>
Seat belt with pre-tensioner
SRS - SRS-ECU
52B-50
SRS AIR BAG CONTROL UNIT (SRS-ECU)
Caution
1. Disconnect the negative (-) battery terminal
and wait for 60 seconds or more before
starting work. Also, the disconnected
battery terminal should be insulated with
tape. (Refer to P.52B-3.)
2. Never attempt to disassemble or repair the
SRS-ECU. If faulty, just replace with a new
one.
3. Do not drop or subject the SRS-ECU to
impact or vibration.
If denting, cracking, deformation, or rust are
found in the SRS-ECU, replace it with a new
one. Discard the old one.
4. After deployment of the air bags, replace
the SRS-ECU with a new one.
5. Never use an ohmmeter on or near the
SRS-ECU, and use only the special test
equipment described on P.52B-6.
REMOVAL AND INSTALLATION
Pre-removal Operation
D
Turn Ignition Key to LOCK (OFF) Position.
D
Disconnect the Negative (-) Battery Terminal.
1
2
4.9 ± 1.0 N·m
4.9 ± 1.0 N·m
4.9 ± 1.0 N·m
3
Removal steps
D
Front floor console
(Refer to GROUP 52A - Front floor
console.)
D
Rear heater duct B
<Vehicles with rear heater duct>
1. SRS-ECU and SRS-ECU bracket
assembly
2. SRS-ECU
3. SRS-ECU bracket
Installation steps
3. SRS-ECU bracket
"
AA 2. SRS-ECU
1. SRS-ECU and SRS-ECU bracket
assembly
D
Rear heater duct B
<Vehicles with rear heater duct>
D
Front floor console
(Refer to GROUP 52A - Front floor
console.)
D
Negative
(-)
battery
terminal
connection
"
BA D Post-installation inspection
SRS - SRS-ECU
52B-51
INSTALLATION SERVICE POINTS
"
AA SRS-ECU INSTALLATION
Caution
Be sure to install the SRS-ECU properly. Otherwise, the
SRS air bags do not activate, which results in serious
injury or death of vehicle’s occupants.
"
BA POST-INSTALLATION CHECK
1. Turn the ignition switch to ON.
2. Does the SRS warning lamp illuminate for about 7 seconds
and then go out.
Yes: The SRS warning lamp is working properly
No: Go to Troubleshooting. (Refer to P.52B-6.)
INSPECTION
1. Check the SRS-ECU and brackets for dents, cracks or
deformation.
2. Check connector for damage, and terminals for
deformation.
Caution
If a dent, crack, deformation or rust are present,
replace the SRS-ECU with a new one.
NOTE
To check the SRS-ECU in other items than described
above, go to Troubleshooting. (Refer to P.52B-6.)
SRS warning lamp
SRS - Air Bag Modules and Clock Spring
52B-52
AIR BAG MODULES AND CLOCK SPRING
Caution
1. Disconnect the negative (-) battery terminal
and wait for 60 seconds or more before
starting work. Also, the disconnected
battery terminal should be insulated with
tape. (Refer to P.52B-3.)
2. Never attempt to disassemble or repair the
air bag modules and clock spring.
If faulty, just replace with new one(s).
3. Do not drop the air bag modules or clock
spring or allow contact with water, grease
or oil.
Replace if a dent, crack, deformation or rust
are present.
4. Store the air bag modules on a flat surface
with the deployment surface facing up.
Do not place anything on top of them.
5. Do not store the air bag modules in a place
more than 93_C.
6. When the driver’s and front passenger’s air
bags have been deployed, replace the
driver’s and passenger’s air bag modules
with new ones.
7. Put on gloves and safety glasses when
handling deployed air bags.
8. When discarding the undeployed air bag
module(s), be sure to deploy the air bag(s)
in advance as specified in the service
procedure. (Refer to to P.52B-64.)
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