Mitsubishi Outlander (2013+). Manual - part 133

SENSOR

MULTIPOINT FUEL INJECTION (MPI)

13A-16

not pass the magnetic resistance element and the
resistance decreases. The inlet camshaft position
sensor converts this change in resistance of the
magnetic resistance element to a 5 V pulse signal
and outputs it to engine-ECU.

DETONATION SENSOR

A detonation sensor is installed on the inlet side of
the cylinder block. Detonation sensor uses the piezo-
electric element to convert the vibration of the cylin-
der block generated when engine is in operation to
minute voltage that is output to engine-ECU.
Engine-ECU uses the minute output voltage from the
detonation sensor filtered through the cylinder
block's natural frequency to detect knocking, and
compensates the ignition timing lag according to the
strength of the knocking.

AK602287

Camshaft position sensor

Engine-ECU

Output signal

Magnetic resistance element

AK604903AC

Piezoelectric element

AK602226

Detonation sensor

Piezoelectric element

Engine-ECU

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SENSOR

MULTIPOINT FUEL INJECTION (MPI)

13A-17

BAROMETRIC PRESSURE SENSOR

A barometric pressure sensor is built into
engine-ECU. The barometric pressure sensor is a
semiconductor diffused pressure element which out-
puts voltage to engine-ECU according to atmos-
pheric pressure. Engine-ECU uses this output
voltage to sense the altitude of the vehicle and com-
pensates fuel injection volume to achieve the appro-
priate air-fuel ratio for that altitude.

OIL PRESSURE SWITCH

The oil pressure switch is installed on the inlet side of
the cylinder block. The oil pressure switch detects
whether the oil pressure is high or low using the con-
tact switch. When the oil pressure becomes higher
than the specified value after the engine starts, the
contact point of the oil pressure switch opens.
This allows the engine-ECU to detect the oil pressure
is higher than the specified value. The engine-ECU
outputs the OFF signal to the combination meter
through the CAN and then turns off the oil pressure
warning lamp.

ALTERNATOR FR TERMINAL

Alternator turns ON/OFF the power transistor in the
voltage regulator to adjust current flow in the field coil
according to alternator output current. In this way
alternator output voltage is kept adjusted (to about
14.4 V). The ratio of power transistor ON time (ON

duty) is output from alternator FR terminal to
engine-ECU. Engine-ECU uses this signal to detect
alternator output current and drives throttle valve
control servo according to output current (electric
load). This prevents change in idle speed due to
electric load and helps maintain stable idle speed.

AK602575AB

Barometric pressure sensor
(built in engine-ECU)

AK602587AB

Oil
pressure

Contact switch

AK602228

OFF

ngine-ECU

terminal voltage (V)

Oil pressure:low

Oil pressure: high

Operating pressure

Oil pressure (kPa)

Oil pressure switch

ngine-ECU

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SENSOR

MULTIPOINT FUEL INJECTION (MPI)

13A-18

ALTERNATOR L TERMINAL

After turning on the ignition switch, the current is
input by the engine-ECU to the alternator L terminal.
This allows the voltage regulator to be on and the
field coil to be excited. When the alternator rotates in
this situation, the voltage is excited in the stator coil
and the current is output from B-terminal through the
commutation diode. Also the generated voltage is
input to the voltage regulator through the commuta-

tion diode. After the electric generation begins, the
current is supplied to the field coil from this circuit. In
addition, the generated voltage is output from the
alternator L terminal to the engine-ECU. This allows
the engine-ECU to detect that the electric generation
begins. The engine-ECU outputs the ON signal to
the combination meter through the CAN and then
turns off the charge lamp.

AK604998AB

Field coil

Battery

Voltage regulator

Alternator

Engine-ECU

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