Electronic control system
2-5
Mode Controls performed by engine ECM
Start-up mode
For quick engine start (to shorten cranking time), fuel is injected into all cyl-
inders until the cylinders have been identified.
Normal operating
mod
e
Fuel is injected into cylinders in groups, to #1 and #4, and to #2 and #3 (to
all cylinders during acceleration).
Fuel injection cut off
mod
e
Cutoff when engine
shut
-off switch is on
Fuel injection is cut when the clip is removed
(engine shut-off switch: ON).
Cutoff when over-rev-
ving
To protect the engine, fuel injection is skipped
wh
en the engine speed is more than the specified
level.
Cutoff during decel-
eration
To suppress generation of unburned gas and
imp
rove the fuel efficiency, fuel injection is cut dur-
ing deceleration under a specific driving condition.
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