cvt MITSUBISHI LANCER EVOLUTION X 2008 User Guide

THROTTLE VALVE OPENING ANGLE CONTROL AND IDLE SPEED CONTROL
MULTIPORT FUEL SYSTEM (MFI)13A-39
List of main compensations for throttle valve opening angle and idle speed control
Initialize control
After ignition switch turns OFF, ECM drives the throt-
tle valve from fully closed position to fully open posi-
tion and records the fully closed/open studied value
of the throttle position sensor (main and sub) output
signals. The recorded studied values are used as
studied value compensation for compensating basic
target opening angle when the engine is started next.
CompensationsContent
Stable idle compensation (immediately after start)In order to stabilize idle speed immediately after
start, target opening angle is kept big and then
gradually reduced. Compensation values are set
based on the engine coolant temperature.
Rotation speed feedback compensation (while
idling)In case there is a difference between the target idle
speed and actual engine speed, ECM
compensates the throttle valve opening angle
based on that difference.
Atmospheric pressure compensationAt high altitudes atmospheric pressure is less and
the intake air density is low. So, the target opening
angle is compensated based on atmospheric
pressure.
Engine coolant temperature compensationCompensation is made according to the engine
coolant temperature. The lower the engine coolant
temperature the greater the throttle valve opening
angle.
Electric load compensationThrottle valve opening angle is compensated
according to electric load. The greater the electric
load, the greater the throttle valve opening angle.
Compensation when shift is in D range When transmission is changed from P or N range
to some other range, throttle valve opening angle is
increased to prevent reduction in engine speed.
Compensation when A/C is functioningThrottle valve opening angle is compensated
according to functioning of A/C compressor. While
A/C compressor is being driven, the throttle valve
opening angle is increased.
Power steering fluid pressure compensationThrottle valve opening angle is compensated
according to power steering functioning. When
power steering oil pressure rises and power
steering pressure switch is ON, the throttle valve
opening angle is increased.

STARTER RELAY CONTROL
MULTIPORT FUEL SYSTEM (MFI)13A-48
When the ignition switch-ST signal is input, ECM
turns ON the power transistor for control of the
starter relay.
AK604137
M
AB P
DNR
OFF ON OFF
ON
Engine-ECU
Starter relay
controlTransmission
range switch Ignition switch-STBattery
Starter relay
Starter ETACS
-ECU

GENERAL INFORMATION
FRONT AXLE26-2
GENERAL INFORMATIONM2260000100819
For the front axle, a double-row angular contact ball
bearing with an integral oil seal is adopted as a
wheel bearing, and EBJ-ETJ type constant velocity
joint as a driveshaft.
It has the following features:
•The driveshaft incorporates lightweight and com-
pact EBJ-ETJ type constant velocity joints.
•Lead-free grease for the constant velocity joint is
adopted.
•Hexavalent chromium is eliminated from the dust
cover material.
•The number of parts is reduced by integrating the
magnetic encoder for ABS wheel speed detection
into the wheel bearing.
NOTE: .
ETJ (High Efficiency Compact Tripod Joint): the
lighter and smaller constant velocity joint com
-
pared with the conventional TJ has been
installed.
EBJ (High Efficiency Compact Birfield Joint): the
lighter and smaller constant velocity joint com
-
pared with the conventional BJ has been
achieved by adopting the eight small balls.
SPECIFICATIONS
NOTE: *: Indicates the distance between each joint
center.
ItemSpecification
Wheel bearingBearing typeUnit bearing (double-row angular contact ball
bearing)
Bearing (Outer diameter x inside
diameter) mm (in)80 × 43 (3.15 × 1.69)
DriveshaftJoint typeOutsideEBJ
InsideETJ
Shaft length* x shaft
diameter mm (in)M/T-LH380.5 × 24.5 (15.0 × 1.0)
M/T-RH715 × 28 (28.1 × 1.1)
CVT-LH399.5 × 24.5 (15.7 × 1.0)
CVT-RH715.0 × 28 (28.1 × 1.1)

GENERAL INFORMATION
FRONT SUSPENSION33-3
.
COIL SPRING
Caster2°40'
Kingpin inclination13°30'
Toe-in mm (in)1 (0.04)
Item Specification
ItemSpecification
DE, ESGT S
Wire diameter mm (in)14 (0.6)
Average outside diameter mm (in)159 (6.3)
Free length mm (in)5MT331 (13.0)316 (12.4)
CVT338 (13.3)322 (12.7)