2004 MITSUBISHI LANCER EVOLUTION VIII fuel pump

ENGINE (4G6) – GENERAL, BASE ENGINE (6 M/T)18
Control system (6M/T)
The following changes have been made, based on the control system in the 4G63DOHCT/C engine fitted in the current
Lancer Evolution VIII.
* Addition of wastegate solenoid valve (1 valve –> 2 valves)
System Block Diagram
Air flow sensor (AFS)
Air temperature sensor
Atmospheric pressure sensor
Water temperature sensor
Throttle position sensor (TPS)
A/C switch
A/C load signal
Cam position sensor
Crank angle sensor
Alternator FR terminal
Vehicle speed sensor
Power steering fluid pressure
switch
Knock sensor
Intercooler water spray (auto)
Intercooler water spray (manual)
O
2sensor
Ignition switch –IG
Ignition switch –STPower supplyEngine ECU
Fuel injection control
Idle speed control (ISC)
Ignition timing control
Engine control relay control
Fuel pump relay control
A/C relay control
Fan motor control (radiator)
Fan relay control (A/C
condenser)
Alternator control
Air flow sensor filter reset
control
Fuel pressure control
Supercharging pressure
control
Secondary air controlIntercooler water spay control
Engine warning light control
O
2sensor heater control
Purge control
Diagnosis output
RAM data transmissionNo. 1 indicator
No. 2 indicator
No. 3 indicatorNo. 4 indicator
ISC servo (stepper motor)
Ignition coil A (No.1 – No.4)
Ignition coil B (No.2 – No.3)
Engine control relay
Fuel pump relay 2
Fuel pump relay 3
A/C relay
Fan controller (radiator fan)
Fan motor relay (HI, LOW)
(A/C condenser)
Alternator G terminal
Air flow sensor
Fuel pressure control valve
No. 1 wastegate solenoid valve
No. 2 wastegate solenoid valve
Secondary air control solenoid
valve
Intercooler water spray relay
Intercooler water spray lamp
Tachometer
Engine warning lights O
2sensor heater
Purge control solenoid valve
Diagnosis output terminal
Diagnosis output terminal (for
MUTII)

ENGINE (4G6) – GENERAL, BASE ENGINE (6 M/T)19
1. O2 sensor2. Air flow sensor3. Air intake sensor4. Throttle position
sensor
5. Cam position sensor6. Crack angle sensor7. Atmospheric pressure
sensor
8. Water temperature
sensor
9. Knock sensor•Power supply
• Ignition switch IG
•Ignition switch ST
•Vehicle speed sensor
• A/C switch
1. Injector2. ISC servo (stepper
motor)
3. Fuel pressure control
solenoid valve
4. No.1 wastegate solenoid
valve
5. No.2 wastegate solenoid
valve
6. Purge control solenoid
valve
7. Secondary air control
solenoid valve•Engine control relay
•Fuel pump relay 2, 3
•A/C relay
•Ignition coil
• Fan controller
Engine ECU
6. Purge control
solenoid valveCanister
7. Secondary air
control solenoid valveFrom fuel tank
Secondary
air valveBypass
valve
1. O2sensor
3. Fuel pressure
control solenoid valve
4. Throttle
position
sensor
7. Atmospheric pressure
sensor
3. Air intake
sensor2. Air flow sensor
4. No.1
wastegate
solenoid valve
5. No.2 wastegate
solenoid valve
Only operates on 6M/TWastegate actuatorFuel pressure
regulator
1. Injector5.Cam position sensor8.Water temperature sensor
9.Knock sensor
Crack angle sensor
Catalytic converter Air
intakeCheck
valve
2. ISC servo
Vacuum
tank
From fuel
pump To fuel
tank
Control system diagram

MPI General13A2
General
Service information issued contains the changes noted below. Other service details remain unchanged.
• Change from one to two wastegate solenoid valves. However, the No.2 wastegate solenoid valve on the 5 M/T is not
functional.
• Diagnosis code No. P1500 changed to P0622. <6M/T>
MPI system diagram
1.O2 sensor2. Air flow sensor3. Air intake sensor4. Throttle position
sensor
5. Cam position sensor6. Crack angle sensor7.Barometric pressure
sensor
8. Water temperature
sensor
9. Knock sensor•Power supply
• Ignition switch IG
• Ignition switch ST
•Vehicle speed sensor
• A/C switch
• A/C load signal
•Power steering fluid
pressure switch
•Alternator FR signal
•Intercooler water spray
switch (auto)
•Intercooler water spray
switch (manual)
1.Injector2. ISC servo (stepper
motor)
3.Fuel pressure control
solenoid valve
4.No.1 wastegate solenoid
valve
5. No.2 wastegate solenoid
valve
6. Purge control solenoid
valve
7. Secondary air control
solenoid valve•Engine control relay
•Fuel pump relay 2, 3
• A/C relay
•Ignition coil
• Fan controller
• Condenser fan relay (HI)
•Condenser fan relay
(LOW)
•Engine warning lamp
•Diagnosis output
• Alternator G terminal
•Intercooler water spray
relay
•Intercooler water spray
lamp
Engine ECU
6.Purge control
solenoid valveCanister
7.Secondary air
control solenoid valveFrom fuel tank
Secondary
air valveBypass
valve
1. O2sensor
3.Fuel pressure
control solenoid valve
4.Throttle
position
sensor
7. Barometric pressure
sensor
3. Air intake
sensor2. Air flow sensor
4. No.1
wastegate
solenoid valve
5.No.2 wastegate
solenoid valve
Only operates on 6M/TWastegate actuatorFuel pressure
regulator
1. Injector5.Cam position sensor8.Water temperature sensor
9.Knock sensor
Crack angle sensor
Catalytic converter Air
intakeCheck
valve
2.ISC servo
Vacuum
tank
From fuel
pump To fuel
tank

CIRCUIT DIAGRAMS - CENTRAL JUNCTION3-9
Fusible link (Relay box inside engine space)
Power supply circuitFuse No.Rated
current (A)ID
colourApplied loads
Battery / Alternator (fusible
link No. 6)320YellowO2sensor, secondary are
control solenoid valve, idle
speed control servo, ignition
coil 1, ignition coil 2, waste
gate solenoid valve 1, waste
gate solenoid valve 2, air
flow sensor, engine ECU,
engine control relay, cam
position sensor, crank angle
sensor, purge control
solenoid valve, fuel pressure
solenoid valve, radiator fan
control relay, register (for
injector)
1020YellowFuel pump relay 3, fuel pump
register, fuel pump & fuel
gauge unit (main)
Forward
direction of
vehicle

CIRCUIT DIAGRAMS - ENGINE CONTROL3-17
Ignition switch
Fuel
pump
relayFuel
pump
relay
Combination
meter
•Windscreen
washer/wiper
•Turn signal lights /
hazard warning
lights
•Tail lights, position
lights, licence
plate lights,
lighting monitor
warning buzzer
•Fog lights
•Headlights
•Rear
washer/wiper

CIRCUIT DIAGRAMS - ENGINE CONTROL3-23
Remarks
* :
•Windscreen washer / wiper
•Meter gauges
•Electric retractable door mirrors
•Generic spare connectors
•Cabin lights, boot interior light,
ignition key cylinder
illumination light, door not
properly closed reminder light
J/B
(Fuel pump relay 2)
Fuel pump
relay 3Fuel
pump
register
Fuel pump
& fuel gauge
unit (main)
Back-up
power supply
Engine ECU