Mitsubishi Evolution X. Manual — part 118

13A-1

GROUP 13A

MULTIPORT FUEL

SYSTEM (MFI)

CONTENTS

GENERAL DESCRIPTION. . . . . . . . .

13A-2

CONTROL UNIT. . . . . . . . . . . . . . . . .

13A-5

SENSOR. . . . . . . . . . . . . . . . . . . . . . .

13A-7

ACTUATOR . . . . . . . . . . . . . . . . . . . .

13A-25

FUEL INJECTION CONTROL . . . . . .

13A-32

IGNITION TIMING AND CONTROL

FOR CURRENT CARRYING TIME . .

13A-37

THROTTLE VALVE OPENING

ANGLE CONTROL AND

IDLE SPEED CONTROL . . . . . . . . . .

13A-40

MIVEC (Mitsubishi Innovative Valve

Timing Electronic Control System).

13A-41

INTAKE CHARGE PRESSURE

CONTROL . . . . . . . . . . . . . . . . . . . . .

13A-44

MULTIPORT FUEL INJECTION (MFI)

RELAY CONTROL. . . . . . . . . . . . . . .

13A-45

FUEL PUMP RELAY CONTROL . . . .

13A-46

STARTER RELAY CONTROL . . . . . .

13A-48

HEATED OXYGEN SENSOR

HEATER CONTROL . . . . . . . . . . . . . .

13A-49

A/C COMPRESSOR CLUTCH

RELAY CONTROL . . . . . . . . . . . . . . .

13A-50

GENERATOR CONTROL. . . . . . . . . .

13A-51

EVAPORATIVE EMISSION

PURGE CONTROL . . . . . . . . . . . . . . .

13A-51

EVAPORATIVE EMISSION

CONTROL SYSTEM INCORRECT

PURGE FLOW MONITOR . . . . . . . . .

13A-52

CONTROLLER AREA NETWORK

(CAN) . . . . . . . . . . . . . . . . . . . . . . . . .

13A-52

ON-BOARD DIAGNOSTICS. . . . . . . .

13A-53

GENERAL DESCRIPTION

TSB Revision

MULTIPORT FUEL SYSTEM (MFI)

13A-2

GENERAL DESCRIPTION

M2132000101636

The following changes have been made to the controls of the 2.0L engine provided on the LANCER EVOLU-
TION-IX.

Improvement / Additions

Remark

The MIVEC used at the intake side is added to the
exhaust side.

It is possible to set the optimum valve timing
according to the engine speed and load.

A crankshaft position sensing blade of 36 teeth is
used.

Provides engine control with finer precision.

A heat-sensitizing type airflow sensor is used.

Compact and lightweight.

An electronically controlled throttle valve system
that controls the amount that the throttle is to be
opened based on the position of the accelerator
pedal is used.

Drivability is enhanced.

A direct-ignition type ignition coil is used.

Improves ignition performance.

Non-resonance type knock sensor is used.

Supports high functionality.

Intake air temperature sensor 2 is added.

Provides engine control with finer precision.

Turbocharger wastegate solenoid 2 is added.

Provides engine control with finer precision.

Barometric pressure sensor with built in ECM used. System is simplified.
EGR solenoid is discontinued.

System is simplified.

Fuel pressure solenoid is discontinued.

System is simplified.

Controller Area Network (CAN) is adopted.

Communication is assured.

GENERAL DESCRIPTION

TSB Revision

MULTIPORT FUEL SYSTEM (MFI)

13A-3

System Block Diagram

AK703838

Mass airflow sensor

Intake air temperature sensor 1

Intake air temperature sensor 2

Intake camshaft position
sensor

Exhaust camshaft position
sensor

Crankshaft position sensor

Throttle position sensor (main)

Throttle position sensor (sub)

Accelerator pedal position
sensor (sub)

Accelerator pedal position
sensor (main)

Engine coolant temperature
sensor

Manifold absolute pressure
sensor

Heated oxygen sensor (front)

Heated oxygen sensor (rear)

Power steering pressure
switch

Engine oil pressure switch

Generator L terminal

Ignition switch-ST

Power supply

Ignition switch-IG

CAN communication
(input signal)

Fuel tank differential pressure
sensor

Knock sensor

Generator FR terminal

Fuel tank temperature sensor

Clutch pedal position switch <M/T>

Engine control unit

Barometric pressure sensor

[1] Fuel injection control

[2] Ignition timing control

[3] Throttle valve opening angle
control and idle speed control

[4] MIVEC (Mitsubishi Innovative
Valve timing Electronic Control
system)

[6] Power supply control
(Power supply to sensor,
actuator)

[7] Fuel pump relay control

[8] Starter relay control

[9] Heated oxygen sensor heater
control

[10] A/C compressor relay control

[11] Generator control

[12] Evaporative emission purge
control

[5] Intake charge pressure control

[13] Diagnosis output

[14] RAM data transmission

CAN communication
(output signal)

Intake engine oil control
valve

A/C compressor relay

No. 2 injector

No. 3 injector

No. 4 injector

Heated oxygen sensor (front)
heater

Heated oxygen sensor (rear)
heater

Throttle actuator control
motor

Throttle actuator control
motor relay

No. 1 injector

No. 1 ignition coil

No. 2 ignition coi

No. 3 ignition coi

No. 4 ignition coi

Fuel pump relay 1

Fuel pump relay 2

Generator G terminal

Multiport fuel injection (MFI)
relay

Exhaust engine oil control
valve

Evaporative emission ventilation
solenoid

Evaporative emission purge
solenoid

Starter relay

AB

Sensor, switch

Engine control module (ECM)

Actuator

Turbocharger wastegate
solenoid 1

Turbocharger wastegate
solenoid 2

GENERAL DESCRIPTION

TSB Revision

MULTIPORT FUEL SYSTEM (MFI)

13A-4

Control System Diagram

AK703839

1 Mass airflow sensor
2 Intake air temperature sensor 1
3 Throttle position sensor (main)
4 Throttle position sensor (sub)
5 Manifold absolute pressure sensor
6 Intake air temperature sensor 2
7 Engine coolant temperature sensor
8 Intake camshaft position sensor
9 Exhaust camshaft position sensor
10 Crankshaft position sensor
11 Knock sensor
12 Heated oxygen sensor (front)
13 Heated oxygen sensor (rear)
14 Fuel tank differential pressure sensor
15 Fuel tank temperature sensor

Ignition switch-IG
Ignition switch-ST
Power supply
CAN communication (input signal)

1 Intake engine oil control valve
2 Exhaust engine oil control valve
3 Throttle actuator control motor
4 Injector
5 Evaporative emission purge solenoid

7 Turbocharger wastegate solenoid 1
8 Turbocharger wastegate solenoid 2

6 Evaporative emission ventilation
solenoid

Ignition coil, ignition power transistor
Multiport fuel injection (MFI) relay
Fuel pump relay 1
Fuel pump relay 2
Starter relay
Throttle actuator control motor relay
Generator G terminal
Heated oxygen sensor heater
A/C compressor relay
CAN communication (output signal)

Sense

Act

Engine oil pressure switch
Power steering pressure switch
Generator FR terminal
Generator L terminal
Clutch pedal position switch <M/T>

Accelerator pedal position sensor (main)
Accelerator pedal position sensor (sub)

Decide

ECM
(with barometric
pressure sensor)

Fuel level
sensor

To fuel
tank

Fuel
pressure
regulator

Air
inlet

2
Exhaust engine
oil control valve

1 Intake engine
oil control valve

5 Manifold
absolute
pressure
sensor

6 Intake air
temperrature
sensor 2

2 Intake air
temperature
sensor 1

1 Mass airflow sensor

8
Intake camshaft
position sensor

9 Exhaust camshaft position sensor

3 Throttle position sensor (main)

4 Throttle position sensor (sub)

5 Evaporative emission
purge solenoid

3 Throttle actuator control motor

15 Fuel tank
temperature
sensor

14 Fuel tank
differential
puressure
sensor

13 Heated oxygen sensor (rear)

12 Heated oxygen sensor (front)

10 Crankshaft position sensor

7 Engine coolant
temperature sensor

11 Knock sensor

4 Injector

Fuel pump

Fuel tank

Evaporative
emission
canister

6 Evaporative
emission
ventilation
solenoid

AB

Check valve

Bypass valve

Turbocharger
wastegate actuator

7 Turbocharger
wastegate solenoid 1

8 Turbocharger
wastegate solenoid 2