Yamaha F225F Service Manual page 68

TECH
FEA
Skip-firing control
Criteria
ETV is locked in
an open position.
Engine is over
revving.
Engine is rotating
in reverse.
Engine speed is
high when
shifting gears.
Engine shut-off
switch is on.
2-13
Technical features and description
Controls the Over 1501 r/min
engine speed
when it has been
1399–1500 r/min
determined that
the ETV is locked
in an open
1302–1398 r/min
position.
1200–1301 r/min
1103–1199 r/min
1001–1102 r/min
Controls the Over 6450 r/min
engine speed
when over
6399–6449 r/min
revving is
detected.
6353–6398 r/min
6302–6352 r/min
6251–6301 r/min
6200–6250 r/min
Stops the engine Engine reverse rotation is determined using 2
if the engine parameters: presence or absence of the cam position
reverse rotation sensor (PORT EX) signal, and the actual advance angle
is detected. of the intake camshaft.
If the reverse rotation is detected, the engine ECM cuts
off the fuel injection and ignition to stop the engine.
Detects the Decreases the engine speed to less than 1500 r/min.
activation of shift
cutout control,
and controls the
engine speed.
Cancels the fuel injection control and ignition control at all of the cylinders.
Description
Firing and fuel injection will be
skipped for all of the cylinders.
Firing and fuel injection will be
skipped for cylinders #1, #2, #3, #5,
and #6.
Firing and fuel injection will be
skipped for cylinders #2, #3, #5, and
#6.
Firing and fuel injection will be
skipped for cylinders #2, #3, and #5.
Firing and fuel injection will be
skipped for cylinders #2 and #5.
Firing and fuel injection will be
skipped for cylinder #2.
Firing and fuel injection will be
skipped for all of the cylinders.
Firing and fuel injection will be
skipped for cylinders #1, #2, #3, #5,
and #6.
Firing and fuel injection will be
skipped for cylinders #2, #3, #5, and
#6.
Firing and fuel injection will be
skipped for cylinders #2, #3, and #5.
Firing and fuel injection will be
skipped for cylinders #2 and #5.
Firing and fuel injection will be
skipped for cylinder #2.