MOTO GUZZI CALIFORNIA EV 1997-2000, Workshop Manual

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36 F
UEL SYSTEM
19 OPERATING STAGES
N
ORMAL MODE
When the engine is thermally regulated, the I.A.W. 15 M
ECU calculates the stage, the injection time and the spark
advance exclusively by means of the interpolation on the
relative stored maps, according to the r.p.m. and the
throttle position.
The quantity of fuel determined in this way is supplied to
the two cylinders in two sequential deliveries.
The moment supply is started, for each cylinder, can be
determined by means of a map which depends on the
r.p.m..
S
TART
-
UP STAGE
The moment in which the starter switch is activated, the
ECU I.A.W. 15 M powers the fuel pump for several
seconds and acquires the throttle angle as well as the
the engine temperature.
Upon start-up, the ECU receives r.p.m. and timing signals
which allow it to then control injection and ignition.
To facilitate ignition, the basic dosage is enriched
according to the oil temperature.
After ignition, the ECU begins to control the spark
advance.
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