2007 MITSUBISHI LANCER EVOLUTION change wheel

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 - On-vehicle Service22A-45
Output voltage:
Above 70 mV when measured with the circuit
tester
Above 200 mVP-P when measured with the
oscilloscope
4. If the output voltage is lower than the above values, the
following reasons may be suspected. Check or replace
the wheel speed sensor.
DExcessive clearance between the ball piece of the
wheel speed sensor and ABS rotor
DWheel speed sensor faul
INSPECTION PROCEDURE USING OSCILLOSCOPE
After checking the connected state of the harness of the
wheel speed sensor and connector, and measure the output
voltage waveform of each wheel speed sensor on the
oscilloscope as follows.
Start the engine, shift the transmission to the 1st gear to
rotate the driving wheel, and rotate the non-driving wheel
at constant velocity with the hand.
NOTE
1. It is also possible to actually drive the vehicle and observe
the waveform.
2. The output voltage is low if the wheel speed is low and
gradually increases as the speed increases.

PhenomenonProbable causeSolution
Waveform amplitude is too small or
not output at allWheel seed sensor faultReplace the sensor
Excessive waveform amplitude
(However allowed if above the
iilit df100V)
Excessive vibration or concentricity of
the axle hubReplace the hub
(
minimum amplitude of 100 mV)4WD-ECU earth faultCorrect
Noise in the waveform or waveform
ibl
Open circuit of the sensorReplace the sensor
is abnormalOpen circuit of the harnessReplace the harness
Wheel speed sensor installation faultCorrect the installation of the sensor
Chipping or flattening of the ABS rotorReplace the ABS rotor
Caution
As the wheel speed sensor cable follows the movement of the front or rear suspension, it will
change considerably on poor condition roads. Therefore, also observe the output voltage waveform
of the wheel speed sensor with the sensor harness vibrated to simulate special conditions such
as driving in poor road conditions.
When rotated with the hand
When idling (5 – 6 km/h)
1st gear
10.0 ms/DIV
IV/DIV

27B-1
REAR AXLE
CONTENTS
GENERAL INFORMATION 2...................
SERVICE SPECIFICATIONS 3.................
LUBRICANTS 3..............................
SEALANTS 4................................
SPECIAL TOOLS 4...........................
TROUBLESHOOTING (AYC) 8.................
ON-VEHICLE SERVICE 16....................
Rear Axle Total Backlash Check 16...............
Gear Oil Level Check 16........................
Gear Oil Change 17............................
Fluid Level Check 19............................
Bleeding 19....................................
AYC Operation Check 20........................
Oil Pressure Check 21..........................Wheel Bearing Axial Play Check 22...............
Wheel Bearing Rotary-sliding Resistance Check 22.
Hub Bolt Replacement 23.......................
Differential Carrier Oil Seal Replacement 23........
Action When Battery Runs Out 24................
REAR HUB ASSEMBLY 25....................
KNUCKLE 28................................
DRIVE SHAFT 29.............................
DIFFERENTIAL CARRIER
35......
DIFFERENTIAL CARRIER
55...................
HYDRAULIC UNIT
61..............

ABS <4WD> -General Information35B-2
GENERAL INFORMATION
ABS has been adopted as optional equipment in
RS-IIto maintain directional stability and steering
performance during sudden braking or braking on
slippery road surfaces.
The ABS control method is a 4-sensor, 4-channel
method which provides independent control for all
wheels.
Following system for Lancer EVOLUTION-VII has
been modified from Lancer EVOLUTION-VI Tommi
Makinen Edition.DBy adding lateral G sensor, longitudinal G
sensor and steering wheel sensor, optimized
ABS control at the time of cornering.
DBy inputting parking brake switch signal to
ABS-ECU with pulling parking brake lever, ABS
control has been optimized.
DABS-ECU outputs ABS signal to 4WD-ECU.
DG sensor (lateral), steering wheel sensor and
parking brake switch have been added to the
diagnosis and service data.
DABS-ECU connector has been changed.
EBD CONTROL
In ABS, electronic control method is used by which
the rear wheel brake hydraulic pressure during
braking is regulated by rear wheel control solenoid
valves in accordance with the vehicle’s rate of
deceleration and the front and rear wheel slippage
which are calculated from the each wheel speed
sensor’s signal. EBD control is a control system
which provides a high level of control for both vehicle
braking force and vehicle stability. The system has
the following features:
DBecause the system provides the optimum rear
wheel braking force regardless of the vehicleladen condition and the condition of the road
surface, the system reduces the required pedal
depression force, particularly when the vehicle
is heavily laden or driving on road surfaces
with high frictional coefficients.
DBecause the duty placed on the front brakes
has been reduced, the increases in pad
temperature can be controlled to improve the
wear resistance characteristics of the pad,
during front brakes applying.
DControl valves such as the proportioning valve
are no longer required.
SPECIFICATIONS
ItemSpecifications
ABS control method4-sensor, 4-channel
No. of ABS rotor teethFront43
Rear43
ABS speed sensorTypeMagnet coil typep
Gap between sensor and rotor mm0.85 / 0.60 (non-adjustable type)

ABS <4WD> -Troubleshooting35B-15
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptomsInspection procedure
No.Reference page
Communication between the MUT-IIand the whole system is not
possible.135B-16
Communication between the MUT-IIand the ABS-ECU is not possible.235B-17
When the ignition key is turned to “ON” (engine stopped), the ABS
warning lamp does not illuminate.335B-18
Even after the engine is started, the ABS warning lamp remains
illuminated.435B-18
In the inspection with MUT-II service data, the parking brake switch is not
turned ON or turn OFF.535B-19
The neutral position learning of the steering wheel sensor is not finished.635B-20
Faulty ABS operation735B-21
Caution
1. If steering movements are made when driving at high speed, or when driving on road surfaces
with low frictional resistance, or when passing over bumps, the ABS may operate even though
sudden braking is not being applied. Because of this, when getting information from the customer,
check if the problem occurred while driving under such conditions as these.
2. During ABS operation, the brake pedal may vibrate or may not be able to be depressed. Such
phenomena are due to intermittent changes in hydraulic pressure inside the brake line to prevent
the wheels from locking and is not an abnormality.

ABS <4WD> -Troubleshooting35B-24
CHECK AT ABS-ECU
Use the following steps to remove the connector cover and
measure the terminal voltage.
1. Move the lock lever of the ABS-ECU connector as shown
in the illustration, and then disconnect the ABS-ECU
connector.
2. Push up and unlock the hooks of the ABS-ECU connector
shown in the illustration, then remove the connector cover.
TERMINAL VOLTAGE CHECK CHART
1. Measure the voltage between each terminal and earth
(terminal No.12).
2. The terminal layout is shown in the illustration.
Terminal No.Check itemChecking requirementsNormal condition
1Parking brake switch
input
Parking brake switch: ON1 V or less
input
Parking brake switch: OFFSystem voltage
2MUT-IIWhen the MUT-IIis connectedSerial communication with MUT-II
When the MUT-IIis not connected1 V or less
3ABS ON output to
4WD ECU
With ABS active (reference)(0.5 V or less)
4WD-ECU
With ABS not activeSystem voltage
4Steering wheel sensor
(ST-N) inputIgnition
switch: ONSteering wheel: Neutral
position and position
near by±360_0.8 - 2.1 V
Steering wheel: Except
for above2.7 - 4.4 V
5Diagnosis changeover
input
When the MUT-IIis connected0V
input
When the MUT-IIis not connectedApprox. 12 V
Lock lever