Sensor, Switch, And Actuator - Yamaha F225F Service Manual

TECH
FEA

Sensor, switch, and actuator

Engine ECM
Pulser coil
Cam position sen-
sor (PORT EX)
Cam position sen-
sor (PORT IN)
Cam position sen-
sor (STBD IN)
TPS 1
TPS 2
SPS 1
SPS 2
ETV
Shift actuator
Air pressure sensor
Air temperature
sensor
Engine tempera-
ture sensor
Oil pressure sensor
Thermoswitch
Knock sensor
Engine shut-off
switch
Fuel injector
Ignition coil
Vapor shut-off
valve
OCV
High-pressure fuel
pump
2-3
Technical features and description
Determines the engine operating conditions according to the input signals
from the sensors which are installed at various locations on the engine,
and sends output signals to operate the actuators to perform the various
control functions.
Detects the engine speed.
Detects the crankshaft angle and piston positions.
Determines each group of cylinders (#1 and #4, #2 and #5, and #3 and
#6).
Determines the stroke. (For example, distinguishes the compression stroke
TDC from the exhaust stroke TDC.)
Determines each group of cylinders (#1 and #4, #2 and #5, and #3 and
#6).
Determines the stroke of each cylinder according to the signals from both
the pulser coil and the cam position sensor (PORT EX).
Detects the advance angle on the port camshaft.
Detects the advance angle on the starboard camshaft.
Detect the throttle valve opening. TPS 1 is the main sensor and TPS 2 is
the sub sensor. TPS 1 and TPS 2 mutually monitor each other for malfunc-
tions.
Detect the shift position. SPS 1 is the main sensor and SPS 2 is the sub
sensor. SPS 1 and SPS 2 mutually monitor each other for malfunctions.
Opens and closes the throttle valve using a motor.
Drives the motor according to the engine ECM command for engaging or
disengaging the gearshift.
Detects the intake air pressure.
Detects the intake air temperature.
Detects the engine temperature.
Detects the oil pressure.
Detects engine overheating.
Detects engine knocking.
Stops the engine forcibly.
Injects fuel.
Activates the ignition.
Controls the amount of vapor gas to be sent from the vapor separator to
the intake system.
Advances or retards the camshaft timing by switching the oil passages
through which the engine oil is sent into the advance chamber or the retard
chamber in the rotor vane housing.
Pressurizes the fuel and sends the fuel to the fuel rails.