2-3
TECH
FEA
Technical features and description
Actuator, sensor, and switch
Engine ECM 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.
Performs troubleshooting using a self-diagnosis function.
Pulser coil 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).
Cam position sensor
(PORT EX)
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).
Cam position sensor
(PORT IN)
Detects the advance angle on the port camshaft.
Cam position sensor
(STBD IN)
Detects the advance angle on the starboard camshaft.
APS 1 Detect the throttle opening. APS 2 is the main sensor and APS 1 is
the sub sensor. APS 1 and APS 2 mutually monitor each other for
malfunctions.
APS 2
TPS 1 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 malfunctions.
TPS 2
ETV Opens and closes the throttle valve using a motor.
Air pressure sensor Detects the intake air pressure.
Air temperature sensor Detects the intake air temperature.
Engine temperature
sensor
Detects the engine temperature.
Oil pressure sensor Detects the oil pressure.
Thermoswitch Detects engine overheating.
Knock sensor Detects engine knocking.
Shift cut switch Detects when the gear shift moves to the N position.
Neutral switch Detects when the gear shift is in the N position.
Engine shut-off switch Activates the engine stop function compulsorily.
Fuel injector Injects fuel.
Ignition coil Activates the ignition.
Vapor shut-off valve Controls the amount of vapor gas to be sent from the vapor
separator to the intake system.
OCV 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.
High-pressure fuel pump Pressurizes the fuel in the vapor separator, and sends the fuel to
the fuel rails.
Low-pressure fuel pump Sends the fuel from the fuel tank to the vapor separator.
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