steering wheel MITSUBISHI LANCER EVOLUTION 2007 Service Owner's Manual

MANUAL TRANSMISSION - Troubleshooting 22A-15
Code No.31 Steering wheel sensor
systemProbable cause
Code No.31 is output when open circuit or short circuit of the steering wheel
sensor output line (ST-1, ST-2, or ST-N) occurs.DSteering wheel sensor fault
DHarness or connector fault
D4WD-ECU fault
OK NG NO
OK
MUT-IIData List
DNo.21 Steering wheel sensor
voltage
DNo.22 Steering wheel sensor
voltage
DNo.23 Steering wheel sensor
voltage
OK:Refer to P.22A-35 (Data
List Reference Table).
OK→Intermittent malfunction (Refer
to GROUP 00 - Points to Note for
Intermittent Malfunctions)
Check the following connector:C-43
NG→Repair YES
MUT-IIDiagnosis Code
DAre the ABS Diagnosis Code
Nos.81, 82, 83 output?
MUT-IIData List
DNo.21 Steering wheel sensor voltage
DNo.22 Steering wheel sensor voltage
DNo.23 Steering wheel sensor voltage
OK:Refer to P.22A-35 (Data List Reference Table).
NG→Replace the 4WD-ECU.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
NG (No change from 0 V or
from above 4.5 V)
Measure at 4WD-ECU connector C-43.
DMeasure the ECU terminal voltage.
DIgnition switch: ON
(1) Voltage between terminal 33 and earth (Steering wheel
sensor )
(2) Voltage between terminal34and earth (Steering wheel
sensor )
(3) Voltage between terminal44 andearth (Steering wheel
sensor )
OK:When the steering wheel is turned, changes at
approx. 1.5 V – 3.5 V.
(1) NG
NG (Changes at 1 V
- 4.5 V or more)
OK
Check the harness between the steering wheel sensor and
ignition switch.
DCheck for open circuit, ground and damage of the power
line.
NG→Repair
Check the following connectors:C-230, C-102, C-209,
C-210
NG→Repair
OKOK
Check the following connectors:
C-230, C-128, C-43
C-230, C-43
NG→Repair
OK
Check the harness between 4WD-ECU and steering
wheel sensor.
DCheck for open circuit, short circuit, and damage of
the output line.
NG→Repair
Replace the steering wheel sensor.
Replace the Steering wheel sensor.
OK
OK
Check the following connector:
C-230
NG→RepairNG
Measure at Steering wheel sensor
connector C-230.
DDisconnect the connector and
measure at the harness side.
DIgnition switch: ON
DVoltage between terminal 2 and
earth
OK:System voltage
DResistance between terminal 3
and body earth
OK:2Ωor less
OK
Check the following connectors:
C-230, C-102, C-209, C-210
NG→Repair
Check the harness between the
ignition switch and steering wheel
sensor.
DCheck for open circuit and
damage on power line.
NG→Repair
(2) NG
OK
Check the harness between the steering wheel sensor and
body earth.
DCheck for open circuit and damage of the earth line.
NG→Repair
Check the following connector:C-230, C-08
NG→Repair
Measure at steering wheel sensor connector C-230.
DDisconnect the connector and measure at the
harness side.
DIgnition switch: ON
(1) Voltage between terminal 2 and earth
OK:System voltage
(2) Resistance between terminal 3 and body earth
OK:2Ωor less

MANUAL TRANSMISSION - Troubleshooting 22A-16
Code No.32, 33 Steering wheel sensor systemProbable cause
Code No.32 is output when the steering wheel sensor ST-N has been detected
at the neutral position in a state where the steering wheel has been determined
to have changed above 40_C from steering wheel sensor ST-1 and ST-2.
Code No.33 is output when the steering wheel sensor ST-N has been detected
at the neutral position in a state where the steering wheel has been determined
to have changed above 400_C from steering wheel sensor ST-1 and ST-2.DHarness or connector fault
DSteering wheel sensor fault
D4WD-ECU fault
NG
OK
MUT-IIData List
DNo.52 Steering wheel sensor
(1) Steering wheel: Neutral
OK:ON
(2) Steering wheel: Turn from neutral position
OK:OFF
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
Check the following connector:C-43
NG→Repair
NG
Check the following connectors:
C-230, C-128, C-43
C-230, C-43
NG→Repair
OK
Replace the steering wheel sensor.OK
Measure at 4WD-ECU connector C-43.
DMeasure the ECU terminal voltage.
DIgnition switch: ON
DVoltage between terminal 44 and earth (Steering wheel
sensor )
OK:When the steering wheel is turned, changes to
approx. 1.5 V or 3.5 V.
MUT-IIData List
DNo.52 Steering wheel sensor
(1) Steering wheel: Neutral
OK:ON
(2) Steering wheel: Turn from the neutral position
OK:OFF
NG→Replace 4WD-ECU.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
OK
Check the harness between the 4WD-ECU and steering wheel
sensor.
DCheck for damage of the output line.
Check the damage between the steering wheel sensor and
body earth.
DCheck for open circuit and damage of the earth line.
NG→Repair

MANUAL TRANSMISSION - Troubleshooting 22A-17
Code No.34 Steering wheel sensor systemProbable cause
Code No.34 is output when no change in the steering wheel sensor signal at a
vehicle speed of above 15 km/h is detected for a total of more than 15 minutes
, and turning is detected during this time.DHarness or connector fault
DSteering wheel sensor fault
D4WD-ECU fault
NG
OK
MUT-IIData List
DNo.53 Steering wheel sensor
OK:When the steering wheel is rotated to the left, ON
and OFF are repeated.
DNo.54 Steering wheel sensor
OK:When the steering wheel is rotated to the right, ON
and OFF are repeated.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions)
Check the following connector:C-43
NG→Repair
NG
Check the following connectors:
C-230, C-128, C-43
C-230, C-43
NG→Repair
OK
Replace the steering wheel sensor.OK
OK
Check the harness between the 4WD-ECU and steering wheel
sensor.
DCheck for damage of the output line.
Check the harness between the steering wheel sensor and
body earth.
DCheck for open circuit and damage of the earth line.
NG→Repair
Measure at 4WD-ECU connector C-43.
DMeasure the ECU terminal voltage.
DIgnition switch: ON
(1) Voltage between terminal 33 and earth (Steering wheel
sensor )
(2) Voltage between terminal 34 and earth (Steering wheel
sensor )
OK:When the steering wheel is turned, changes at
approx. 1.5 V or 3.5 V
MUT-IIData List
DNo.53 Steering wheel sensor
OK:When the steering wheel is rotated to the left, ON
and OFF are repeated
DNo.54 Steering wheel sensor
OK:When the steering wheel is rotated to the right ON
and OFF are repeated.
NG→Replace the 4WD-ECU.
OK→Intermittent malfunction (Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)

MANUAL TRANSMISSION - Troubleshooting 22A-35
DATA LIST REFERENCE TABLE
Item
no.Check itemCheck conditionNormal conditions
01Wheel speed sensor
Execute actual driving.The speed meter dis-
play and MUT-IIdis-
lth02Wheel speed sensor

py
play match.
03Wheel speed sensor

04Wheel speed sensor

05Wheel speed sensor
(0.2 km/h)
06Wheel speed sensor
(0.2 km/h)
07Wheel speed sensor
(0.2 km/h)
08Wheel speed sensor
(0.2 km/h)
09Vehicle speed
10Battery voltageIgnition switch: ONSystem voltage
11Proportional valve cur-
rent During ACD operation50 - 1,000 mA
12Proportional valve cur-
rent During AYC operation50 - 1,000 mA
13TPS voltageIgnition switch: ON
Engine: StoppedAccelerator pedal: Full
closed535 - 735 mV
Engine:Stopped
Accelerator pedal: PressGradually rises from
the above value
Accelerator pedal: Full
throttle4,500 - 5,000 mV
14Longitudinal G sensor
voltageIgnition switch: ONVehicle stopped (horizon-
tal) state2.4 - 2.6 V
g
Actual drivingThe displayed value
increases and de-
creases mainly around
2.5 V.
15Lateral G sensor volt-
ageIgnition switch: ONVehicle stopped (horizon-
tal) state2.4 - 2.6 V
g
Perform actual drivingThe displayed value
increases and de-
creases mainly around
2.5 V.
16Steering operation
angleIgnition switch: ONSteering wheel: Steer by 90
degrees to the rightR90 deg
g
Steering wheel: Steer by 90
degrees to the leftL90 deg
17Steering angle velocityIgnition switch: ONSteering wheel: No steering0 deg/sggyg
Steering wheel: SteerThe display changes
according to the revolu-
tion speed.
18Pressure sensorDuring electric pump motor operations1.0 - 1.6 MPa

MANUAL TRANSMISSION - Troubleshooting 22A-36
Item
no.Normal conditions Check condition Check item
19Pressure sensor power
supplyIgnition switch: ONApprox.5 V
20Valve power supplyIgnition switch: ONSystem voltage
21Steering wheel sensor
voltage Ignition switch: ONSteering wheel: Turn1 - 2 V and 2.5 - 4.5 V
are displayed alter-
nately.
22Steering wheel sensor
voltage Ignition switch: ONSteering wheel: Turn1 - 2 V and 2.5 - 4.5 V
are displayed alter-
nately.
23Steering wheel sensor
ltSTN
Ignition switch: ONSteering wheel: Neutral1-2Vg
voltage
g
Steering wheel: Turn2.5 - 4.5 V
51Idle switchIgnition switch: ONAccelerator pedal: Full
closedON
Accelerator pedal: PressOFF
52Steering wheel sensor
STN
Ignition switch: ONsteering wheel: NeutralONg

g
Steering wheel: Turn from
the neutral positionOFF
53Steering wheel sensor
Ignition switch: ONSteering wheel: Turn slowlyON and OFF are dis-
played alternaltely.
54Steering wheel sensor
Ignition switch: ONSteering wheel: Turn slowlyON and OFF are dis-
played alternately
55Steering wheel sensor
learning Perform actual drivingSteering wheel sensor neu-
tral position learning exe-
cutedON
Steering wheel sensor neu-
tral position learning unex-
ecutedOFF
56Stop lamp switchIgnition switch: ONBrake pedal: DepressONppg
Engine: StoppedBrake pedal: ReleaseOFF
57Motor monitorElectric pump motor is currently operatingON
Electric pump motor is currently not operatingOFF
58Oil pressure stateElectric pump motor is currently operatingLOWp
Electric pump motor is currently not operatingHIGH
59Directional valve
Ri ht
AYC clutch right side is currently operatingON
AYC clutch right side is currently not operatingOFF
60Directional valve
Lft
AYC clutch left side is currently operatingON
AYC clutch left side is currently not operatingOFF
61ABS monitorABS is currently operatingON
ABS is currently not operatingOFF
62Parking brake switchIgnition switch: ONParking brake lever: PullONgg
Engine:StoppedParking brake lever: Re-
leaseOFF
63ACD mode switchIgnition switch: ONACD mode switch: PressONg
Engine:StoppedACD mode switch: ReleaseOFF

MANUAL TRANSMISSION - Troubleshooting 22A-37
ACTUATOR TEST JUDGEMENT VALUE
Item
no.Check itemTest descriptionNormal state
01Bleeding Input current to the Proportional valve
according to the steering angle, and operate
the Proportional valve for five minutes.Make sure no air leaks from the bleeder
screw on the transfer.
02Bleeding Input current to the Proportional valve
according to the steering angle, and operate
the directional valve for five minutes.Make sure no air leaks from the bleeder
screw on the torque transfer differential.
03Check the oil vol-
umeOperate the directional valve to the left and
right for 20 seconds.Check that the oil volume of the reservoir
tank is appropriate.
04Electric pump
driveOperate the electric pump for 5 seconds.Operation sounds of the electric pump
can be heard.
05Check the opera-
tions of the ACDOperate the Proportional valve and
supply the maximum oil pressure to the multi
plate clutch.9Generate the tight corner braking
phenomenon.
06Check clutch op-
erations Operate the direction valve and supply the
maximum oil pressure to the left clutch.When the wheels are lifted, speed
difference will occur between the rear
left and right wheels.
07Check clutch op-
erations Operate the direction valve and supply the
maximum oil pressure to the right clutch.When the wheels are lifted, speed
difference will occur between the rear
left and right wheels.
08Control OFFTurn OFF the electric pump relay, and turn
OFF the control of the ACD and AYC.In actual driving, there is difference
between control ON and OFF.
(1) The actuator test can be executed only when all the following conditions are satisfied.
DAll wheel speed sensor inputs below 20 km/h
DNo system malfunction detected
DSteering angle is within±30 degrees from the neutral position
(2) When the actuator test corresponds to one of the following conditions, forced driving will be cleared.
DWhen any one of the wheel speed sensor input is detected to be above 20 km/h (excluding
Item No.08 “Control OFF”.)
DWhen system malfunction is detected (excluding diagnostic code No.82, 84, and 85)
DWhen the forced drive time is exceeded
DWhen the MUT-IIis removed
DWhen the Clear key of the MUT-IIis operated

MANUAL TRANSMISSION - Troubleshooting 22A-39
Termi-
nal no.Normal state Check condition Check item
24*2Longitudinal G sensor
earth, lateral G sensor
earthAny time1 V or less
26ECU earthAny time1 V or less
31ECU backup power
supplyAny timeSystem voltage
32Pressure sensorIgnition switch: ON0.5 - 1.5 V
33Steering wheel sensor
Ignition switch: ONSteering wheel: Turn slowly1-2V↔2.5 -
4.5 V flushing
34Steering wheel sensor
Ignition switch: ONSteering wheel: Turn slowly1-2V↔2.5 -
4.5 V flushing
35Diagnosis data input/
output--
36Idle switchIgnition switch: ONAccelerator pedal: Full closed1 V or lessg
Accelerator pedal: Depress4.5 - 5.0 V
37Parking brake switchIgnition switch: ONParking brake lever: Pull1 V or lessgg
Parking brake lever: ReleaseSystem voltage
38Stop lamp switchIgnition switch: ONBrake pedal: DepressSystem voltageppg
Brake pedal: Release1 V or less
39TPSIgnition switch: ONAccelerator pedal: Full closed0.5 - 0.7 Vg
Accelerator pedal: Full throttle4.5 - 5.5 V
40ACD mode indicator
lamp Ignition switch: ONACD mode indicator lamp position:
TARMAC0V
p
ACD mode indicator lamp position:
Except for aboveApprox. 10.5 V
42ECU earthAny time1 V or less
43Pressure sensor earthAny time1 V or less
44Steering wheel sensor
STN
Ignition switch: ONSteering wheel: Neutral1-2Vg

g
Steering wheel: Turn from the
neutral position2.5 - 4.5 V
46Diagnosis control--
47ACD mode switchIgnition switch: ONSwitch: PressSystem voltageg
Switch: Release0V
49*1ABS monitorWith ABS not activeSystem voltage
With ABS active1.5 V or less
50*2EarthAny time1 V or less
51ACD mode indicator
lamp Ignition switch: ONACD mode indicator lamp position:
SNOW0V
p
ACD mode indicator lamp position:
Except for aboveApprox. 10.5 V
52ACD mode indicator
lamp Ignition switch: ONACD mode indicator lamp position:
GRAVEL0V
p
ACD mode indicator lamp position:
Except for aboveApprox. 10.5 V

MANUAL TRANSMISSION - On-vehicle Service22A-42
BLEEDING VEHICLES WITH ACD AND AYC>
1. Lift up the vehicle.
2. Set the MUT-IIto the 16-pin diagnosis connector.
Caution
Turn the ignition switch to the “LOCK”(OFF) position
before connecting or disconnecting the MUT-II.
3. Turn the ignition switch to the “ON” position.
4. Set the steering wheel in the straight-ahead position.
5. Perform the MUT-IIactuator test (Item No.02), and forcibly
drive the hydraulic unit.
NOTE
(1) The actuator test (Item No.01: Bleeding Mode) will
be performed for 5 minutes, after which it will be
cleared automatically. Drive can also be cleared during
forced driving using the clear key of the MUT-II.
(2) If the hydraulic unit function has been stopped by
fail-safe, the hydraulic unit cannot be forcibly driven.
6. Remove the cap of the bleeder screw on the transfer,
and connect the vinyl hose.
7
.Slowly turn the steering wheel to the left or right from
the neutral state. Loosen the bleeder screw, and check
that air is discharged together with the fluid.
8
.After the air is discharged, tighten the bleeder screw,
and return the steering wheel to the neutral state.
Caution
During bleeding, replenish the fluid so that some
always remains in the oil reservoir.
9. Repeat steps 6 and 7 several 2 to 3 times, and after
checking that no more air mixes in, tighten the bleeder
screw at the specified torque.
Tightening torque: 5±1 N·m
10. After bleeding, check the fluid level. (Refer to P. 22A-41.)
Caution
If bleeding is not performed completely, noise may
be produced from the hydraulic unit, or the durability
of the pump, etc. may drop.
11. On vehicles with AYC, perform bleeding when the
hydraulic unit is removed. (Refer to GROUP 27B -
On-vehicle Service.)
ACD OPERATION CHECK ACD OR VEHICLES WITH ACD AND AYC>
1. Lift up the vehicle.
2
.Set the MUT-IIto the 16-pin diagnosis connector.
Caution
Turn the ignition switch to the “LOCK”(OFF) position
before connecting or disconnecting the MUT-II.
3. Start the engine.
Bleeder screw
Front exhaust pipe

MANUAL TRANSMISSION - On-vehicle Service22A-43
4. Set the gear to the 2nd gear or above, operate the MUT-II,
and check from the service data (Item No.09) that the
wheel speed is within 10 km/h to 20 km/h.
NOTE
(1) Set the steering wheel to the neutral position
(2) The ACD may continue operating (operation sounds
can be heard) when the steering wheel is steered,
this is not a system fault. In this case, set the steering
wheel to the neutral position, and perform the following
operations to stop the ACD.
DRelease the clutch.
DSet the gear to “N”.
DStop the engine
5. Perform the MUT-IIactuator test (Item No.05), and forcibly
drive the transfer.
NOTE
(1) The actuator test (Item No. 05: ACD Operation Check
Mode) is performed for 1 minute, after which it will
be cleared automatically. Drive can also be cleared
during forced driving using the clear key of the MUT-II.
(2) If the hydraulic unit function has been stopped by
fail-safe, the transfer cannot be forcibly driven.
6. Check that the front and rear wheel speeds satisfy the
following in the MUT-IIactuator test (Item No.05).

The front wheel will be faster than the back wheels by
more than 2 km/h.
NOTE
If the above are not satisfied, check the oil pressure as
the system may be faulty.
HYDRAULIC PRESSURE CHECK WITH ACD OR VEHICLES WITH ACD AND AYC>
1. Lift up the vehicle.
2. Set the MUT-IIto the 16-pin diagnosis connector.
Caution
Turn the ignition switch to the “LOCK”(OFF) position
before connecting or disconnecting the MUT-II.
3. Disconnect the hydraulic unit and transfer connector
assembly, and connect the special tool to the hydraulic
unit.
4. Turn the ignition switch to “ON”.
5. Perform the MUT-IIactuator test (Item No.05), and forcibly
drive the hydraulic unit.
NOTE
(1) The actuator test (Item No. 05 ACD Operation Check
Mode) is performed for 1 minute, after which it will
be cleared automatically. Drive can also be cleared
during forced driving using the clear key of the MUT-II.
MD998330
MB991705

MANUAL TRANSMISSION -Sensor, Switch and Relay or vehicles with ACD and AYC>22A-56
SENSOR, SWITCH AND RELAY VEHICLES WITH ACD AND AYC>
REMOVAL AND INSTALLATION
Caution
Before removing the steering wheel and air bag module assembly, be sure to refer to GROUP
52B Precautions in Servicing and Airbag Module Clock Spring.
1
3
2
4
5
Parking brake lever
Steering wheel sensor removal
steps
DSteering wheel and column cover
(Refer to GROUP 37A.)
1. Steering wheel sensor
G sensor removal steps
DFloor console (Refer to GROUP 52A.)
2. Longitudinal G sensor
3. Lateral G sensorElectric pump relay removal
4. Electric pump relay
ACD mode switch removal steps
DInstrument panel ornament (Refer to
GROUP 52A – Instrument Panel.)
5. ACD mode switch
NOTE
For details on the wheel speed sensor, refer to GROUP
35B.
REMOVAL SERVICE POINT
AA"STEERING WHEEL SENSOR REMOVAL
Remove the steering wheel sensor from the column switch.
Caution
Make sure no oil adheres to the steering wheel sensor
because a photocoupler is used.Steering wheel sensor