clock MITSUBISHI LANCER EVOLUTION 2007 Service Manual PDF

SRS -Troubleshooting52B-35

clock spring>
Measure at the SRS-ECU connector C-21.
DDisconnect the SRS-ECU connector C-21.
DDisconnect the the clock spring connector
C-204.
DIgnition switch:ON
DMeasure at the harness side
DVoltage between terminal 11 or 12 and body
earth
Caution
Do not directly insert a probe or other
devices at the front of the connector to
avoid a possible decrease in the contact
pressure.
OK:0V clock spring>
Measure at the SRS-ECU connector C-21.
DDisconnect the SRS-ECU connector C-21.
DDisconnect the clock spring connector C-204 .
DMeasure at the harness side
DContinuity between terminal 11 or 12 and body
earth
Caution
Do not directly insert a probe or other
devices at the front of the connector to avoid
a possible decrease in the contact pressure.
OK:No continuity

MUT-II self-diag code
DRelease the clock spring connector (2 - pin) C-204.
DConnect the dummy resistor (MB991865) to the resistor harness
(MB991866).
DInsert the resistor harness
(MB991866) behind the harness side connector C-204.
Caution
Do not directly insert a probe or other devices at the front of the
connector to avoid a possible decrease in the contact pressure.
DConnect the negative ( - ) terminal of the battery
DCheck the diagnosis code again after erasing the memory.
Is code No.61 or No.62 output?
YES (when No.62 is output)YES (when No.61 is output)NO
Check the clock spring (Refer to P.52B-59.)
NOYES
Replace the clock spring.Replace the driver’s air bag module
(squib).
Replace the SRS-ECU.
NG
Correct
Check connector:C-21, C-204
Check the trouble symptoms.
Check the harness between the
clock spring and the SRS-ECU, and
repair if necessary.
NG
OK
NG
OK
NG
Connector C-21Connector C-21 Resistor harness
(MB991866)
C - 204 clock spring
harness side connector Dummy resistor
(MB991865)
resistance (3Ω)
Replace the SRS-
ECU. OK

SRS -Troubleshooting52B-36


MUT-II self-diag code
DDisconnect the clock spring connector No.1 (connector connected with
the air bag module).
DConnect the dummy resistor (MB991865) to the resistor harness
(MB991866).
DInsert the resistor harness (MB991866) behind the clock spring
connector No.1.
Caution
Do not directly insert a probe or other devices at the front of the
connector to avoid a possible decrease in the contact pressure.
DConnect the negative ( - ) terminal of the battery
DCheck the diagnosis code again after erasing the memory.
Is code No.61 or No.62 output?
YESNO
Replace the driver’s air bag module (squib).

MUT-II self-diag code
DRelease the clock spring connector (2 - pin) C-204 .
DConnect the dummy resistor (MB991865) to the resistor harness
(MB991866).
DInsert the resistor harness
(MB991866) behind the harness side connector C-204.
Caution
Do not directly insert a probe or other devices at the front of the
connector to avoid a possible decrease in the contact pressure.
DConnect the negative ( - ) terminal of the battery
DCheck the diagnosis code again after erasing the memory.
Is code No.61 or No.62 output?
YES (when No.62 is output)
Go to Next Page
YES (when No.61 is output)Resistor harness
(MB991866) Dummy resistor
(MB991865)
resistance (3Ω)
1
NO
Replace the clock spring.
Resistor harness
(MB991866)
C - 204 clock spring
harness side connector Dummy resistor
(MB991865)
resistance (3Ω)

SRS -Troubleshooting52B-37
Replace the SRS-ECU.
clock spring>
Measure at the SRS-ECU connector C-21.
DDisconnect the SRS-ECU connector C-21.
DDisconnect the the clock spring connector
C-204.
DIgnition switch:ON
DMeasure at the harness side
DVoltage between terminal 11 or 12 and body
earth
Caution
Do not directly insert a probe or other
devices at the front of the connector to avoid
a possible decrease in the contact pressure.
OK:0V
NG
From Previous Page
YES (when No.62 is output)YES (when No.61 is output)
Replace the SRS-
ECU.
Correct
Check connector:C-21, C-204
Check the trouble symptoms.
Check the harness between the
clock spring and the SRS-ECU, and
repair if necessary.OK
clock spring>
Measure at the SRS-ECU connector C-21.
DDisconnect the SRS-ECU connector C-21.
DDisconnect the clock spring connector C-204 .
DMeasure at the harness side
DContinuity between terminal 11 or 12 and body
earth
Caution
Do not directly insert a probe or other
devices at the front of the connector to avoid
a possible decrease in the contact pressure.
OK:No continuity
NG
OK
NG
OK
NG
Connector C-21 Connector C-21

SRS - SRS Maintenance52B-43
AIR BAG MODULES, STEERING WHEEL AND CLOCK
SPRING AND SEAT BELT WITH PRE-TENSIONER
1. Remove the air bag modules, steering wheel and clock
spring. (Refer to P.52B-52.)
Caution
The removed air bag modules should be stored in
a clean, dry place with the cover face up.
2. Check cover for dents, cracks or deformation.
3. Check connector for damage, terminals deformities, and
harness for binds.
4. Check air bag inflator case for dents, cracks or deformities.
5. Check harness and connectors for damage, and terminals
for deformation.
6. Check clock spring connectors and protective tube for
damage, and terminals for deformation.
7. Visually check the clock spring case for damage.
8. Align the mating marks of the clock spring and, after
turning the vehicle’s front wheels to straight-ahead
position, install the clock spring to the column switch.
Mating Mark Alignment
Turn the clock spring clockwise fully, and then turn back
it approx. 3 times counterclockwise to align the mating
marks.
Caution
If the clock spring’s mating mark is not properly
aligned, the steering wheel may not be completely
rotational during a turn, or the flat cable within the
clock spring may be severed, obstructing normal
operation of the SRS and possibly leading to serious
injury to the vehicle’s driver or front passenger.
9. Install the steering column covers, steering wheel and
the air bag module.
10. Check steering wheel for noise, binds of difficult operation.
11. Check steering wheel for excessive free play.Inflator
Connector
Connector
Steering
wheel - driver’s
air bag module
assembly



Connector Inflator case
Mating marks

SRS - Post-collision Diagnosis52B-46
REPAIR PROCEDURE
DEPLOYED DRIVER’S AND FRONT PASSENGER’S AIR
BAGS OR OPERATED SEAT BELT PRE-TENSIONER.
1. Replace the following parts with new ones.
DSRS-ECU (Refer to P.52B-50.)
DDriver’s air bag module (Refer to P.52B-52.)
DFront passenger’s air bag module (Refer to P.52B-52.)
DSeat belt with pre-tensioner (Refer to P.52B-61.)
2. Check the following parts and replace if malfunction is
found:
DClock spring (Refer to P.52B-52.)
DSteering wheel, steering column and intermediate
joint
(1) Check the wiring harness (built into steering
wheel) and connectors for damage, and terminals
for deformation.
(2) Check the driver’s air bag module for proper
installation to the steering wheel.
(3) Check the steering wheel for noise, binds or
difficult operation and excessive free play.
3. Check the harness for binding, connectors for damage,
poor connections, and terminals for deformation.
(Refer to P.52B-44.)
UNDEPLOYED AIR BAGS OR UNOPERATED SEAT BELT
WITH PRE-TENSIONER IN LOW-SPEED COLLISION
Check the SRS components and seat belt with pre-tensioner.
If visible damage such as dents, cracks, or deformation are
found on the SRS components and seat belt with
pre-tensioner, replace them with new ones. Concerning parts
removed for inspection, replacement with new parts and
cautions in working, refer to INDIVIDUAL COMPONENT
SERVICE, P.52B-49.

SRS - Post-collision Diagnosis52B-47
SRS-ECU
1. Check the SRS-ECU case and bracket for dents, cracks
or deformation.
2. Check the connector for damage, and terminals for
deformation.
3. Check the SRS-ECU and bracket for proper installation.
Driver’s and passenger’s air bag modules
1. Check the covers for dents, cracks or deformation.
2. Check the connectors for damage, the terminals
deformities, and the harness for binds.
3. Check the air bag inflator cases for dents, cracks or
deformities.
4. Check the air bag modules for proper installation.
Clock spring
1. Check the clock spring connectors and protective tubes
for damage, and terminals for deformation.
2. Visually check the case for damage.
SRS-ECU
Inflator
Connector
Connector
Steering
wheel - driver’s
air bag module
assembly



Connector Inflator case
Protective tubesCase

SRS - Individual Component Service/Warning/Caution Labels52B-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, steering wheel -air bag module,front
passenger’s air bag module, clock spring, and seat belt with pre-tensioner before drying or
baking the vehicle after painting.
DFront impact sensor, SRS-ECU, Air bag module, clock spring: 93_C or more
DSeat 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 whenservicing the SRS. If the label(s) are dirty or
damaged, replace with new one(s).
Steering wheel
Driver’s air bag module
Clock springFront passenger’s
air bag moduleSRS-ECU
Sun visor
Steering joint cover
Glove boxCover
Seat belt with pre-tensioner

SRS - Air Bag Modules and Clock Spring52B-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.)

SRS - Air Bag Modules and Clock Spring52B-53
REMOVAL AND INSTALLATION

Pre-removal Operation
Disconnect the Negative ( - ) Battery Terminal.

3 2
41
0.9±0.2 N·m
0.9±0.2 N·m41±8 N·m
Driver’s air bag module removal
steps
AA"1. Driver’s air bag moduleDriver’s air bag module installation
steps
"AADPre-installation inspection
1. Driver’s air bag module
DNegative ( - ) terminal of the battery
connection
"DADPost-installation inspection
Clock spring removal steps
AA"1. Driver’s air bag module
AB"2. Steering wheel
3. Lower column cover
AC"4. Clock springClock spring installation steps
"AADPre-installation inspection
"BA4. Clock spring
3. Lower Column Cover
"CA2. Steering wheel
1. Driver’s air bag module
DNegative ( - ) terminal of the battery
connection
"DADPost-installation inspection

SRS -Air Bag Modules and Clock Spring52B-54

3 2
4
1
50±5 N·m
2
Steering wheel - driver’s air bag
module assembly removal steps
AD"1. Cover
AE"2. Steering wheel - driver’s air bag
module assemblySteering wheel - driver’s air bag
module assembly installation steps
"AADPre-installation inspection
2. Steering wheel - driver’s air bag
module assembly
1. Cover
DNegative ( - ) terminal of the battery
connection
"DADPost-installation inspection
Clock spring removal steps
AD"1. Cover
AE"2. Steering wheel - driver’s air bag
module assembly
3. Lower Column Cover
AC"4. Clock springClock spring installation steps
"AADPre-installation inspection
"BA4. Clock spring
3. Lower Column Cover
"CA2. Steering wheel - driver’s air bag
module assembly
1. Cover
DNegative ( - ) terminal of the battery
connection
"DADPost-installation inspection