2008 MITSUBISHI LANCER EVOLUTION X diagram

GENERAL INFORMATION
FUEL SUPPLY13B-2
GENERAL INFORMATIONM2134000100833.The fuel system consists of the following compo-
nents:
•Fuel injector
•Fuel rail
•Fuel pipe
•Fuel tank
•Fuel pump module
•Evaporative emission canister
SPECIFICATIONS
CONSTRUCTION DIAGRAM
This fuel system is designed with consideration for
global environment protection to ensure safety at a
collision, reduce weight, and improve reliability and
quality. This system has the following features:
•A quick-joint connector of a plastic tube is used
for the fuel high-pressure hoses in the engine
compartment to reduce the permeation of fuel
evaporative emission.
•The surface of underfloor fuel pipes is coated
with 1-mm thickness of plastic to improve resis
-
tance to corrosion and chipping.
•A returnless fuel system eliminates returned fuel
from the engine. The heat that fuel receives from
the engine is reduced, minimizing fuel tempera
-
ture in the fuel tank and controlling the amount of
evaporated gas.
ItemSpecification
Fuel tank capacity dm3 (gal)59 (15.5)
Fuel pump typeElectric
Fuel filter typeCartridge (incorporates fuel pump module)
Fuel return systemReturnless
Fuel pump pressure regulator pressure kPa (psi)324 (46)
Fuel injectorTy p eElector-magnetic
Quantity4
Evaporative emission control systemCanister
AC610224
Fuel rail
Fuel injector
Fuel pipeFuel pump moduleEvaporative
emission
canister Fuel tank
AB

FUEL TANK
FUEL SUPPLY13B-3
FUEL TANKM2134001000817.The fuel tank assembly consists of the fuel pump
module, the fuel tank, and so on, and features the
following characteristics:
•The fuel tank is mounted underneath the second
seat to improve safety at a collision.
•The fuel tank itself is made of a pre-coat zinc
alloy galvanised steel sheet that contains no
lead.
•The capacity of the fuel tank is 59 dm3 (15.5 gal)
to meet long-distance drives.
•The fuel cut-off valve, fuel tank leveling valve and
fuel tube have been installed using in-tank con
-
struction to reduce the amount of evaporated fuel
from hoses.
The fuel pump module consists of the following com-
ponents:
•Fuel pump
•Fuel level sensor
•Fuel filter
•Fuel pump pressure regulator
•Fuel tank differential pressure sensor
•Fuel tank temperature sensor
CONSTRUCTION DIAGRAM
AC610225AB
Fuel pump module
Fuel tank
AC610226
Fuel cut-off valve
Fuel check valve
Leveling valve
AC

GENERAL DESCRIPTION
MULTIPORT FUEL SYSTEM (MFI)13A-3
System Block Diagram
AK604116
Mass airflow sensor
Intake air temperature sensor
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)
· A/C switch
· Vehicle speed
· Fuel level sensor
· Transmission range switch
Fuel tank differential pressure
sensor Heated oxygen sensor
(3rd)*
Knock sensor
Generator FR terminal
Fuel tank temperature sensor
Vehicle speed sensor 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)
[5] Power supply control
(Power supply to sensor,
actuator)
[6] Fuel pump relay control
[7] Starter relay control
[8] Heated oxygen sensor heater
control
[9] A/C compressor relay control
[10] Generator control
[11] Evaporative emission purge
control
[12] EGR 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
Generator G terminal Heated oxygen sensor (3rd)
heater*
Multiport fuel injection (MFI)
relay Exhaust engine oil control
valve
Evaporative emission ventilation
solenoid Evaporative emission purge
solenoid
EGR valve (stepper motor)*
Starter relay
AB
Sensor, switch Engine control module (ECM) Actuator
NOTE
*1: California

GENERAL DESCRIPTION
MULTIPORT FUEL SYSTEM (MFI)13A-4
Control System Diagram

AK604117
Fuel level
sensorFuel tank Air
inlet
2 Exhaust engine
oil control valve
1 Intake engine
oil control valve4 Manifold absolute pressure sensor
2 Intake air
temperature sensor
1 Mass airflow sensor
6 Intake
camshaft
position
sensor
7 Exhaust
camshaft
position
sensor
3 Throttle position
sensor (main/sub)
5 Evaporative emission
purge solenoid
3 Throttle actuator
control motor
12 Fuel tank differential
pressure sensor
13 Fuel tank
temperature
sensor10 Heated oxygen sensor (front)
11 Heated oxygen
sensor (rear)
8 Crankshaft position sensor5 Engine coolant
temperature sensor
9 Knock sensor
4 Injector
Fuel pump Fuel pressure
regulator Evaporative
emission
canister
6 Evaporative
emission
ventilation
solenoid
1 Mass airflow sensor
2 Intake air temperature sensor
3 Throttle position sensor (main/sub)
4 Manifold absolute pressure sensor
5 Engine coolant temperature sensor
6 Intake camshaft position sensor
7 Exhaust camshaft position sensor
8 Crankshaft position sensor
9 Knock sensor
10 Heated oxygen sensor (front)
11 Heated oxygen sensor (rear)
12 Fuel tank differential pressure sensor
13 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
6 Evaporative emission ventilation
solenoid
Ignition coil, ignition power transistor
Multiport fuel injection (MFI) relay
Fuel pump relay
Starter relay
Throttle actuator control motor relay
Generator G terminal
Heated oxygen sensor heater
A/C compressor relay
Diagnostic output
CAN communication (output signal) SenseAct
Engine oil pressure switch
Power steering pressure switch
Generator FR terminal
Generator L terminal
Vehicle speed sensor Accelerator pedal position sensor (main/sub)
Decide
ECM
(with barometric
pressure sensor)
AB

SENSOR
MULTIPORT FUEL SYSTEM (MFI)13A-20
FUEL TANK DIFFERENTIAL PRESSURE SENSOR
The fuel tank differential pressure sensor is installed to the fuel
pump module. The fuel tank differential pressure sensor out
-
puts the voltage to the ECM using the piezo resistive semicon-
ductor in accordance with the difference between pressure in
the fuel tank and the pressure of the atmosphere. When moni
-
toring the evaporative leak, the ECM detects malfunctions of
the evaporative emission control system by monitoring the
amount of output voltage changes from this sensor. The sensor
characteristics are as shown in the diagram.
.
FUEL TANK TEMPERATURE SENSOR
The fuel tank temperature sensor is installed to the fuel pump
module. The fuel tank temperature sensor detects the tempera
-
ture inside the fuel tank using the resistance change in the ther-
mistor and outputs the voltage to the ECM in accordance with
the temperature inside the fuel tank. The ECM monitors the
evaporative leak in accordance with the fuel tank temperature.
The sensor characteristics are as shown in the diagram.
AK604121Pressure Fuel tank differential
pressure sensorAB
AK604122
5 V
0 GroundOutput voltage V
Pressure kPa (in. Hg) Fuel tank differential pressure sensorECMPower supply
Output signal
AB
AK604123AB
Sensory part
(thermistor) Fuel tank
temperature
sensor
AK604124
ECM
Resistance kΩOutput voltage V
5 V
AB
Fuel tank temperature
sensor (thermistor)
Fuel tank
temperature C (F)Fuel tank
temperature C (F)

FUEL INJECTION CONTROL
MULTIPORT FUEL SYSTEM (MFI)13A-29
FUEL INJECTION CONTROLM2132003001036
Fuel injection volume is regulated to obtain the opti-
mum air-fuel ratio in accordance with the constant
minute changes in engine driving conditions. Fuel
injection volume is controlled by injector drive time
(injection time). There is a prescribed basic drive
time that varies according to the engine speed and intake air volume. ECM adds prescribed compensa
-
tions to this basic drive time according to conditions
such as the intake air temperature and engine cool
-
ant temperature to decide injection time. Fuel injec-
tion is done separately for each cylinder and is done
once in two engine rotations.
System Configuration Diagram
1. INJECTOR ACTUATION (FUEL INJECTION)
TIMING
Injector drive time in case of multiport fuel injection (MFI) is
controlled as follows according to driving conditions.
AK604128AB
ECM InjectorMass airflow sensor
Intake air temperature sensor
Manifold absolute
pressure sensor
Engine coolant
temperature sensor
Accelerator pedal position sensor
Knock sensor
Intake camshaft position sensor
Ignition switch-ST
Heated oxygen sensor (front, rear) Crankshaft position sensor

FUEL INJECTION CONTROL
MULTIPORT FUEL SYSTEM (MFI)13A-32
Fuel Injection Volume Control Block Diagram
.
AK602278AD
Mass airflow sensor
Crankshaft
position sensor
Heated oxygen
sensor
Engine coolant
temperature
compensation Engine coolant
temperature sensor
Manifold absolute
pressure sensorFuel pressure
compensation Barometric pressure
sensor
Battery voltage
compensation Battery voltageBasic fuel
injection time
determinationAir fuel ratio
compensation
(Predetermined
compensation)
Heated oxygen
sensor feedback
compensation
Injector Acceleration-
deceleration
compensation

IGNITION TIMING AND CONTROL FOR CURRENT CARRYING TIME
MULTIPORT FUEL SYSTEM (MFI)13A-35
IGNITION TIMING AND CONTROL FOR CURRENT
CARRYING TIME
M2132027100089
Ignition timing is pre-set according to engine driving
conditions. Compensations are made according to
pre-set values depending on conditions such as
engine coolant temperature, battery voltage etc. to
decide optimum ignition timing. Primary current con
-
nect/disconnect signal is sent to the power transistor
to control ignition timing. Ignition is done in sequence
of cylinders 1, 3, 4, 2.
System Configuration Diagram
AK502722AD
ECM MFI relay
Spark plugs Ignition
coils
Cylinder No. 1 2 3 4Battery
Mass airflow sensor
Intake air temperature sensor
Manifold absolute
pressure sensor
Engine coolant
temperature sensor
Intake camshaft position sensor
Exhaust camshaft position sensor
Crankshaft position sensor
Knock sensor
Ignition switch-ST Throttle position sensor