SELVA MARINE Blue Whale 250 EFI, Service Manual

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GEN
INFO
General information
1-17
6P23H11
Sensor function
Sensor Function
Crank position
sensor • Detects the engine speed.
• Controls the ignition timing, fuel injection volume, engine speed, engine
knock, variable camshaft timing, and electronic throttle valve opening
angle.
• Detects the angle of the crankshaft and the position of the pistons.
(Cannot detect the position of the exhaust and compression strokes.)
• Identifies cylinder groups #1 and #4, #2 and #5, and #3 and #6.
Cam position sensor
(PORT EX) • Detects the stroke position.
(Example: TDC of the compression stroke or TDC of the exhaust
stroke.)
• Detects the strokes of the different cylinders using signals of both the
crank position sensor and cam position sensor (PORT EX).
• Control the variable camshaft timing.
Cam position sensor
(STBD IN) Detects the starboard advance angle using variable camshaft timing
control.
Cam position sensor
(PORT IN) Detects the port advance angle using variable camshaft timing control.
TPS 1 Detects the electronic throttle valve opening angle.
TPS 2 Detects the electronic throttle valve opening angle.
Accelerator position
sensor 1 Detects the throttle lever opening angle.
Accelerator position
sensor 2 Detects the throttle lever opening angle.
Intake air pressure
sensor Detects the intake air pressure and controls the ignition timing and fuel
injection volume.
Intake air
temperature sensor Detects the intake air temperature and controls the correction of the
ignition timing.
Engine temperature
sensor Controls the correction of the ignition timing and fuel injection volume.
Neutral switch Detects the neutral position.
Oil pressure sensor Detects the engine oil pressure and controls the warning and engine
speed when the engine oil pressure is low.
Thermoswitch Sends signals to warn that the engine is overheating and controls the
engine speed when the overheat warning is activated.
Shift cut switch Outputs signals to decrease the engine speed to facilitate shifting.
Knock sensor Detects abnormal combustion knock and controls the ignition timing.