2005 MITSUBISHI LANCER EVOLUTION IX relay

CIRCUIT DIAGRAMS - ENGINE CONTROL SYSTEM3-28
ENGINE CONTROL SYSTEM
Battery
Dedicated
fuse
Engine
control
relay
Engine ECU
Ignition
Power
supply

CIRCUIT DIAGRAMS - ENGINE CONTROL SYSTEM3-29
Ignition
switch (IG1)
Fuel
pump
relay 1Fuel
pump
relay 2
Combination
meter•Windscreen washer /
wiper
•Turn signal lights,
hazard lights
•Tail lights, position
lights, licence plate
lights, lighting
monitor warning
buzzer
•Fog lamps
•Headlights
•Rear washer / wiper

CIRCUIT DIAGRAMS - ENGINE CONTROL SYSTEM3-30
Engine control system (continued)
Engine control relay
Air flow
sensor
Engine
ECU
•ACD (vehicle
w/out AYC)
•ACD, AYC Air pressure
sensor Intake temp.
sensor J/C (6)
(Engine control relay)
Exhaust cam
position
sensorIntake cam
position
sensor
Throttle position
sensorCoolant temperature
sensor Air temperature
sensor

CIRCUIT DIAGRAMS - ENGINE CONTROL SYSTEM3-31
Engine
control relay
Oil feed
control
valve
Crank
angle
sensorRegister (for injectors)
InjectorInjector Injector Injector
Engine
control relay
Knock
sensor
O
2sensor Manifold
absolute
pressure
sensorJ/C (6)
(Engine control relay)

CIRCUIT DIAGRAMS - ENGINE CONTROL SYSTEM3-32
Engine control system (continued)
Ignition
switch (ST)
Starter
relayIdle speed
control
servo
Fuel
pressure
solenoid
valveWaste gate
solenoid
valve 1
Engine ECU
Power steering fluid
pressure switch Engine speed
detection connectorEngine control relay

CIRCUIT DIAGRAMS - ENGINE CONTROL SYSTEM3-33
Engine control relay
Waste gate
solenoid
valve 2Waste
gate
solenoid
valveSecondary
air control
solenoid
valve Intercooler water spray
•Full auto A/C
•Manual A/C
•Cooling•Heater
•Full auto A/C
•Manual A/C•ACD, AYC
•ACD (vehicle
w/out AYC)

CIRCUIT DIAGRAMS - ENGINE CONTROL SYSTEM3-35
J/B
(Fuel pump relay 2)
Fuel pump
relay 3Fuel pump
register
Fuel pump
and fuel
gauge unit
(main) •ACD, AYC
•ACD (vehicle
w/out AYC)
Engine ECU
Back-up
power supply •Windscreen washer /
wiper
•Needle meters
•Electric stowable remote
control door mirrors
•Generic spare connector
•Cabin lights, boot
compartment lights,
ignition key cylinder
illumination light, door
ajar indicator light Note:*

CIRCUIT DIAGRAMS - COOLING3-36
COOLING
Input signals
•A/C switch
•Vehicle speed sensor
•Cooling temp. sensor Fusible
link Engine
control relay
Radiator fan
control relay
Radiator fan
motor Smoothing
circuit
Field-effect
transistor circuit Input signal
processor
Drive circuit
Current
detector Temperature
detector
Radiator fan controller
Engine ECU