Sym Fiddle III 50 Service Manual page 132

SYM 4
. ELECTRONICALLY CONTROLLED CARBURETOR SYSTEM
Throttle Position Sensor fault:
When throttle position sensor problem happened, the software shows that throttle signal too low(show as
the above picture)
Air compensating valve failure:
When solenoid valve problem happened, the software shows that air valve open circuit (show as the
above picture)
O sensor fault
2
When engine is cold, the software can not check whether O sensor is normal or not.It shuld start the
2
engine then let the software judge and inspect whether O2 sensor is normal or not.
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