Mitsubishi Lancer Evolution VI. Manual — part 89
SRS –
General Information
52B-2
GENERAL INFORMATION
To improve safety, the SRS is available as optional
part.
The SRS consists of two air bag modules, SRS
air bag control unit (SRS-ECU), SRS warning lamp
and clock spring. One air bag is located in the
centre of the steering wheel and another above
the glove box. Each air bag has a folded air bag
and an inflator unit. The control unit under the floor
console monitors the system and has a safing G
sensor and an analog G sensor. The warning lamp
on the instrument panel indicates the operational
status of the SRS. The clock spring is installed
in the steering column.
Only authorized service personnel should do work
on or around the SRS components. Those service
personnel should read this manual carefully before
staring any such work. Extreme care must be used
when servicing the SRS to avoid injury to the service
personnel (by inadvertent deployment of the air
bags) or the driver (by rendering the SRS
inoperative).
Air bag module
(Driver’s side)
Clock spring
Air bag module
(Front passenger’s side)
Diagnosis
connector
SRS-ECU
SRS warning lamp
SRS –
SRS Service Precautions
52B-3
SRS SERVICE PRECAUTIONS
1.
In order to avoid injury to yourself or others
from accidental deployment of the air bag during
servicing, read and carefully follow all the
precautions and procedures described in this
manual.
2.
Do not use any electrical test equipment on
or near SRS components, except those
specified on P.52B-5.
3.
Never Attempt to Repair the Following
Components:
D
SRS air bag control unit (SRS-ECU)
D
Clock Spring
D
Air Bag Module
(Driver‘s side or front passenger’s side*)
NOTE
*: Vehicles with front passenger’s air bag
If any of these components are diagnosed as
faulty, they should only be replaced, in
accordance with the INDIVIDUAL COM-
PONENT SERVICE procedures in this manual,
starting at page 52B-22.
4.
After disconnecting the battery cable, wait 60 seconds
or more before proceeding with the following work.
The SRS system is designed to retain enough voltage
to deploy the air bag for a short time even after the
battery has been disconnected, so serious injury may
result from unintended air bag deployment if work
is done on the SRS system immediately after the
battery cables are disconnected.
5.
Do not attempt to repair the wiring harness connectors
of the SRS. If any of the connectors are diagnosed as
faulty, replace the wiring harness. If the wires are
diagnosed as faulty, replace or repair the wiring harness
according to the following table.
Battery
Insulating tape
SRS-ECU connector
SRS –
SRS Service Precautions
52B-4
SRS-ECU
terminal No.
Harness connector
(No. of terminals,
colour)
Destination of harness
Corrective action
1 to 4
21 pins, yellow
–
–
5
Body wiring harness
→
Clock spring
→
Air bag
module (Driver’s side)
Correct or replace each
wiring harness
Replace
6
module (Driver’s side)
wiring harness. Replace
clock spring.
7*
Body wiring harness
→
Air bag module (Front
passenger’s side)
Correct or replace each
wiring harness
8*
passenger’s side)
wiring harness.
9,10
–
–
11
Body wiring harness
→
Diagnosis connector
Correct or replace each
wiring harness.
12
–
–
13
Body wiring harness
→
Junction block (fuse No.2)
Correct or replace each
wiring harness
14
Body wiring harness
→
Junction block (fuse No.4)
wiring harness.
15
Body wiring harness
→
SRS warning lamp
16 to 19
–
–
20
Body wiring harness
→
Earth
Correct or replace each
wiring harness.
21
–
–
NOTE
*: Vehicles with front passenger’s air bag
6.
SRS components should not be subjected to hear over 93
_
C, so remove the SRS-ECU, air bag
module and clock spring before drying or baking the vehicle after painting.
7.
Whenever you finish servicing the SRS, check warning lamp operation to make sure that the system
functions properly. (Refer to P.52B-14.)
8.
Make certain that the ignition switch is LOCK (OFF) position when the MUT-
II
is connected or
disconnected.
9.
If you have any questions about the SRS, please contact your local distributor.
NOTE
SERIOUS INJURY CAN RESULT FROM UNINTENDED AIR BAG DEPLOYMENT, SO USE ONLY
THE PROCEDURES AND EQUIPMENT SPECIFIED IN THIS MANUAL.
SRS –
Special Tools / Test Equipment
52B-5
SPECIAL TOOLS
Tool
Number
Name
Use
MB991502
MUT
-II
sub
assembly
D
Reading diagnosis codes
D
Erasing diagnosis code
D
Reading trouble period
D
Reading erase times
MB991613
SRS check
harness
Checking the SRS electrical circuitry
MB990803
Steering wheel
puller
Steering wheel removal
MB686560
SRS air bag
adapter harness A
D
Deployment of air bag modules and seat
belt with pre-tensioner inside the vehicle
D
Deployment of air bag module (front
passenger’s side) outside the vehicle
MR203491 or
MB628919
SRS air bag
adapter harness B
Deployment of air bag module (driver’s side)
outside the vehicle
TEST EQUIPMENT
Tool
Name
Use
Digital multi-meter
Checking the SRS electrical circuitry
Use a multi-meter for which the
maximum test current is 2 mA or less
at the minimum range of resistance
measurement
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст