Mitsubishi Outlander (2013+). Manual - part 134

ACTUATOR

MULTIPOINT FUEL INJECTION (MPI)

13A-20

ACTUATOR

M2132002001129

INJECTOR

An injector is an injection nozzle with the electromag-
netic valve that injects fuel based on the injection sig-
nal sent by engine-ECU. 1 injector is installed in the 
inlet manifold of each cylinder and fixed to the deliv-
ery pipe. When electricity flows through the solenoid 
coil, the needle gets sucked in. The needle gets 
pulled till the fully open position so that the injection 
hole is fully open and the fuel gets injected.

AK800561

Fuel

Plate

Solenoid coil

Connector

Filter

Needle

AE

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ACTUATOR

MULTIPOINT FUEL INJECTION (MPI)

13A-21

Voltage from the battery gets applied from the injec-
tor relay to the injector and up to the engine-ECU. 
Engine-ECU turns ON its power transistor and pre-
pares the injector's earth circuit. Thus, current flows 
through the injector while power transistor is ON and 
the injector injects fuel.

THROTTLE VALVE CONTROL SERVO

A throttle valve control servo is installed in throttle 
body. The throttle valve control servo performs the 
Open/Close of the throttle valve through the reduc-
tion gear. Engine-ECU changes current direction 
according to the Open/Close direction and also 
changes current to the motor coil to control the throt-
tle valve control servo.
Throttle valve control servo is composed of a good 
response, low energy, and small DC motor with 
brush and can generate rotation force corresponding 
to the current applied on the coil. When there is no 
current passing through the throttle valve control 
servo, the throttle valve remains at a prescribed 
opening angle. So, even if current stops because of 
a fault in the system, a minimum level of running 
remains possible.

AKB00844

From battery

Engine control relay

Injectors

OFF

ON

Engine-ECU

AB

No. 1

No. 2

No. 3

No. 4

AKC00062AC

Throttle body

Throttle valve control servo

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ACTUATOR

MULTIPOINT FUEL INJECTION (MPI)

13A-22

IGNITION COIL

Refer to GROUP 16 

− Ignition System − Ignition Coil 

P.16-2

.

PURGE CONTROL SOLENOID VALVE

Refer to GROUP 17 

− Emission Control <MPI> − 

Evaporative Emission Control System 

P.17-16

.

INLET OIL FEEDER CONTROL VALVE

The inlet oil feeder control valve is installed on the 
inlet side of the cylinder head. Receiving the duty 
signal from the engine-ECU, the inlet oil feeder con-
trol valve operates the spool valve position and 
divides the oil pressure from the cylinder block into 
the advanced chamber and the retarded chamber of 
the V.V.T. sprocket as well as continually changes 
the inlet camshaft phase. The spring makes spool 
valve stop at the position where the inlet camshaft is 
at the most retarded angle when the engine is 
stopped. The engine-ECU operates the spool valve 
position by increasing and decreasing ON duty ratio 
of the inlet oil feeder control valve and allows the 
inlet camshaft to be at the target phase angle. When 
the duty ratio increases, the V.V.T. sprocket makes 
phase of inlet camshaft advanced angle side. When 
the duty ratio degreases, the V.V.T. sprocket makes 
phase of inlet camshaft retarded angle side. When 
the medium duty ratio, at which the spool valve is at 
the medium position, is achieved, all the oil passages 
are closed. This allows the phase angle to be kept 
constant. The engine-ECU changes and controls the 
duty ratio in accordance with the engine operation to 
get the optimum phase angle.

AK602231

Throttle valve
control servo

Throttle valve
control servo relay

Engine control relay

To e

ngine-ECU

Power source

OFF

ON

OFF

ON

AF

From battery

E

ngine-ECU

AK604740AE

Spool valve movement

Retard 
chamber

Spring

Drain

Oil pressure

Coil

Plunger

Drain

Advance 
chamber

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ACTUATOR

MULTIPOINT FUEL INJECTION (MPI)

13A-23

ALTERNATOR G TERMINAL

Engine-ECU uses ON/OFF of alternator G terminal 
to control alternator output voltage. When the power 
transistor in the engine-ECU turns ON, output volt-
age gets adjusted to about 12.8 V. When alternator 
output voltage drops to 12.8 V it becomes lower than 
voltage of the charged battery and almost no current 
is output from the alternator. When the power transis-
tor in the engine-ECU turns OFF, output voltage gets 

adjusted to about 14.4 V. When alternator output 
voltage is about 14.4 V, alternator outputs current to 
produce electricity. In case electric load is generated 
suddenly, engine-ECU controls alternator G termi-
nal's On-duty to limit the sudden increase in alterna-
tor load due to generation and thus prevents change 
in idle speed.

AK700721

Engine-ECU

Inlet oil feeder
control valve

AB

From engine control relay

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