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