Sym Fiddle III 50 Service Manual page 120

SYM
Mechanism illustration························ 4-1
ECS Vehicle Configuration ················· 4-2
ECS operating instructions················· 4-3
ECS Introduction ································· 4-4
Ignition System ···································· 4-5
Throttle position sensor illustration ·· 4-7
MECHANISM ILLUSTRATION
（Dutyfactor solenoid
valve）
（ （ （ （ Electronically controlled
carburetor）
（Dutyfactor solenoid
valve）
（catalyst ）
4
. ELECTRONICALLY CONTROLLED CARBURETOR SYSTEM
ET Sensor Illustration ·························· 4-9
O sensor illustration ··························· 4-10
2
ECU connector illustration·················· 4-11
Diagnostic instrument using method
introduce··············································· 4-12
(Oxygen
(temperature
sensor)
sensor)
ECU
(AI)
(Engine speed sensor)
4-1