2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 20Get this manual
GEN INFO
General information
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 stoichiometric air-fuel ratio in all operating conditions, including starting and idlingAlso, 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