Sym Fiddle III 50 Service Manual page 122

SYM 4
. ELECTRONICALLY CONTROLLED CARBURETOR SYSTEM
Electronically controlled carburetor system operating instructions
Internal operation
Input Output
Crankshaft rotate speed
Duty factor solenoid valve1，2
Throttle Position Sensor
Ignition coil
O Sensor
ECU
2
Trouble indicating lamp
Engine temperature sensor
Diagnosis Communication Line
Battery voltage
AUTOBY-Start (multipliable)
Manifold pressure (optional)
MAP
4-3