Mitsubishi Outlander XL. Manual — part 1244
GENERATOR FR TERMINAL
Generator 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 generator's output voltage
is kept adjusted (to about 14.7 V). The ratio of power transistor
ON time (ON duty) is output from generator FR terminal to ECM.
ECM uses this signal to detect generator's output current and
drives throttle actuator control motor according to output current
(electric load). This prevents change in idle speed due to electric
load and helps maintain stable idle speed.
ZK600269
FR
B
S
AA01
Field coil
IC regulator
Generator
ECM
Ignition switch-IG
Battery
13A-24
MULTIPORT FUEL SYSTEM (MFI)
SENSOR
GENERATOR L TERMINAL
After turning on the ignition switch, the current is input by the
ECM to the generator L terminal. This allows the IC regulator to
be on and the field coil to be excited. When the generator 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 commutation 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 generator L
terminal to the ECM. This allows the ECM to detect that the
electric generation begins. The ECM outputs the ON signal to
the combination meter through the CAN and then turns off the
charge lamp.
ZK602516
L
B
S
AA00
Battery
Generator
IC regulator
Ignition switch-IG
CAN
communication
Charge warning
lamp
Combination meter
ECM
Field coil
MULTIPORT FUEL SYSTEM (MFI)
13A-25
SENSOR
ACTUATOR
M21302000020USA0000010000
INJECTOR
ZK600270 AA00
Fuel
Plate
Ball valve
Plunger
Solenoid coil
Connector
Filter
An injector is an injection nozzle with the electromagnetic valve
that injects fuel based on the injection signal sent by ECM. 1
injector is installed in the intake manifold of each cylinder and
fixed to the fuel rail. When electricity flows through the solenoid
coil, the plunger gets sucked in. The ball valve is integrated with
the plunger, and gets pulled together with the plunger till the fully
open position so that the injection hole is fully open and the fuel
gets injected.
13A-26
MULTIPORT FUEL SYSTEM (MFI)
ACTUATOR
ZK602517
Injector relay
From ETACS-ECU
From MFI relay
Injectors
OFF
No.1
No.2
No.3
No.4
No.5
No.6
ON
ECM
AA00
Voltage from the battery gets applied from the injector relay to
the injector and up to the ECM. ECM turns ON its power
transistor and prepares the injector's ground circuit. Thus,
current flows through the injector while power transistor is ON
and the injector injects fuel.
THROTTLE ACTUATOR CONTROL MOTOR
ZK603448 AA00
Throttle body
Throttle actuator
control motor
A throttle actuator control motor is installed in throttle body. The
throttle actuator control motor performs the Open/Close of the
throttle valve through the reduction gear. ECM changes current
direction according to the Open/Close direction and also
changes current to the motor coil to control the throttle actuator
control motor.
Throttle actuator control motor 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 actuator
control motor, 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.
MULTIPORT FUEL SYSTEM (MFI)
13A-27
ACTUATOR
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