Yamaha F225A Service Manual page 20

GEN
INFO
Electronic control system
The ECM of the F225 controls the ignition timing, the fuel injection timing, the fuel injection volume,
and the ISC and it maintains a stoichiometric air-fuel ratio in all operating conditions, including start-
ing and idling. Also, the ECM converts the signals from the input sensors and sends instructions to
each part.
Pulser coil
Throttle position
sensor
Thermo switch
Intake air temperature
sensor
Intake air pressure
sensor
Stop switch
Engine temperature
sensor
Oil pressure sensor
Shift cutoff switch
Neutral switch
1-15
General information
ECM
(Electronic
control
module)
Low-pressure fuel pump
High-pressure fuel pump
Injectors
ISC (Idle speed control)
Ignition coils
Overheat monitor
Oil pressure monitor
Buzzer
Tachometer
Diagnostic system
Personal computer
S69J1360
69J3D11