Mitsubishi Lancer (4A9 engine). Manual — part 20
AC809021
SRS-ECU
SRS warning lamp
Driver's air bag module
Clock spring
Passenger's (front)
air bag module
Diagnosis connector
Curtain air bag module
Side impact sensor
Front impact sensor
Side-airbag module
Seat belt pre-tensioner
AB
knee air bag module
Seat belt pre-tensioner
Passenger's air bag
cut off switch
Passenger's air bag OFF indicator lamp
<For RUSSIA>
SRS warning lamp
<Except for RUSSIA and RALLIART>
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
GENERAL
00-77
AC801920
Curtain air bag module
Side impact sensor
Side-airbag module
Front impact sensor
AB
Seat belt pre-tensioner
Seat belt
pre-tensioner
Passenger's air bag OFF indicator lamp
SRS-ECU
SRS warning lamp
Driver's air bag module
Clock spring
Passenger's (front)
air bag module
Diagnosis connector
knee air bag module
Passenger's air bag
cut off switch
<RALLIART>
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
GENERAL
00-78
SRS SERVICE PRECAUTIONS
GENERAL
00-79
SRS SERVICE PRECAUTIONS
M1001006000887
1. In order to avoid injury to yourself or others
from accidental deployment of the SRS air bag
during servicing, read and carefully follow all
the precautions and procedures described in
this manual.
2. Be sure to use the tester and special tools
specified in this manual (Special tool: refer to ,
tester: refer to ).
3. Never attempt to repair the following
components:
• SRS-ECU
• Driver's air bag module
• Clock spring
• Passenger's (front) air bag module
• Knee air bag module
• Curtain air bag module
• Front seat assembly incorporating side-air-
bag module
• Seat belt with pre-tensioner
• Front impact sensor
•
AC506921AB
SRS-ECU connector
Side impact sensor
4. Never attempt to repair the wiring harness
connectors of the SRS. If a defective wiring
harness is found, repair or replace it by
referring to the table follows.
SRS-ECU
terminal
No.
Destination of wiring harness
Measures
1, 2
Instrument panel wiring harness
→ knee air bag
module
Repair or replace the instrument
panel wiring harness.
5, 6
Instrument panel wiring harness
→ clock spring →
driver's air bag module (1st squib)
Replace the clock spring, or repair or
replace the instrument panel wiring
harness.
7, 8
Instrument panel wiring harness
→ passenger's (front)
air bag module (1st squib)
Repair or replace the instrument
panel wiring harness.
9, 10
Instrument panel wiring harness
→ clock spring →
driver's air bag module (2nd squib)
Replace the clock spring, or repair or
replace the instrument panel wiring
harness.
11, 12
Instrument panel wiring harness
→ passenger's (front)
air bag module (2nd squib)
Repair or replace the instrument
panel wiring harness.
15, 16
Instrument panel wiring harness
→ CAN bus line
17
Instrument panel wiring harness
→ earth
18
Instrument panel wiring harness
→ Instrument centre
panel
Repair or replace the instrument
panel wiring harness.
19, 20
Instrument panel wiring harness
→ passenger's air
bag cut off switch
21, 22
Instrument panel wiring harness
→ front wiring
harness
→ front impact sensor wiring harness → front
impact sensor (LH)
Repair or replace the wiring
harnesses.
23, 24
Instrument panel wiring harness
→ front wiring
harness
→ front impact sensor wiring harness → front
impact sensor (RH)
SRS SERVICE PRECAUTIONS
GENERAL
00-80
5. Before maintenance, wait for 60 seconds or
more after the disconnection of the battery (
−)
terminal. Wrap the disconnected (
−) terminal
with tape for insulation. The condenser inside
SRS-ECU keeps a voltage necessary to
expand the air bag for a certain period even
after the IG power is turned OFF. Therefore, if
any operation is performed before the period
elapses, it may cause serious damage.
6. If the influence of heat is suspected during
painting work, remove the following parts:
• 93°C or higher SRS-ECU, air bag module,
clock spring, front impact sensor, side impact
sensor
• 90 °C or higher Seat belt with pre-tensioner
7. After the maintenance of the SRS air bag and
seat belt with pre-tensioner is completed, be
sure to delete the diagnosis code and check
whether the SRS warning lamp lights up (refer
to ).
31, 32
Floor wiring harness
→ side-airbag module (LH)
Repair or replace the floor wiring
harness.
33, 34
Floor wiring harness
→ side-airbag module (RH)
39, 40
Floor wiring harness
→ rear floor wiring harness (RH)
→ curtain air bag module (RH)
Repair or replace the wiring
harnesses.
41, 42
Floor wiring harness
→ rear floor wiring harness (LH)
→ curtain air bag module (LH)
43, 44
Floor wiring harness
→ front passenger's seat belt
pre-tensioner
Repair or replace the floor wiring
harness.
45, 46
Floor wiring harness
→ driver's seat belt pre-tensioner
49, 50
Floor wiring harness
→ side impact sensor (LH)
51, 52
Floor wiring harness
→ side impact sensor (RH)
61
Floor wiring harness
→ ETACS-ECU (fuse No. 18)
62
Floor wiring harness
→ ETACS-ECU (fuse No. 12)
AC300580AB
Insulating tape
Battery
Battery cable
SRS-ECU
terminal
No.
Destination of wiring harness
Measures
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