TECHNICAL FEATURE
The spool valve solenoid
is
operated
by the
ECM.
The
ECM
detects the side stand switch, coolant temperature, and ignition pulse
generator signals,
and sends
the signal
to
the
solenoid
valve.
Operating condition from 2 valve to 4 valve
-
Engine coolant
temperature
is
over
65
°C/1
49
°
F.
-
Engine
revolution 6,800 rpm.
22-4
CYLINDER HEAD
SPOOL
VALVE
SOLENOID
ECM
ECT SENSOR
0
IGNITION
PULSE
GENERATOR