Fuel Injection System - Sym ATTILA RS-21 EFi 150 Service Manual

Mechanism Illustration ...............4-1
EFI System Components............4-2
Introduction Of Fuel Control
System .........................................4-3
Electronical Fuel Injection
Components & Operation Principle
Introduction .................................4-3
Precautions In Operation ...........4-4
Trouble Diagnosis .......................4-5
Components Description Of Efi.4-9
Fuel Lines ..................................4-11
Ignition System .........................4-12
Crank Position Sensor..............4-13
Temperature Sensor .................4-14
Mechanism Illustration
Battery
Engine temperature sensor
Fuel
injector
Home page
Data Scan
(Diagnosisor)
Hazardous lamp
Throttle position
sensor (TPS)
Ignition coil
Air by-pass valve
Crankshaft position sensor
Contents

4. FUEL INJECTION SYSTEM

Air By-pass Valve......................4-15
Fuel Injector...............................4-15
Fuel Pump..................................4-15
Fuel Tank ...................................4-16
Air Cleaner .................................4-19
Trouble Diagnosis & Solutions Of
EFi...............................................4-20
Error Code Message and Solution
Operation ...................................4-21
EFi Data scan Operation Manual
....................................................4-23
EFi Component Malfunction
Check& Replacement
Procedure (PI Engine)............4-36
ECU
Fuel pump & pressure regulator
Fuel
tank
Intake temperature &
MAP sensor
(T-MAP)
Vacuum hose
4-1
4