Technical Tips; Electronic Control System; Ecm - Yamaha F150A Service Manual

GEN
INFO

Technical tips

Electronic control system

The electronic control system consists of the sensors and the ECM (electronic control module).
Under various conditions, the ECM provides the best suitable engine operation.
1
1 Intake air pressure sensor
2 Engine temperature sensor
3 Throttle position sensor
4 Pulser coil

ECM

This engine is controlled by the ECM to obtain precise combustion under various operating condi-
tions for high power output, low fuel consumption, and low emissions.
The ECM controls the ignition timing, the fuel injection timing, and the fuel injection volume and
ensures that optimum ignition timing and an optimum air and fuel ratio can be achieved under all
operating conditions such as starting the engine, normal operation, and quick acceleration.
The self-diagnostic function is incorporated into the ECM, and can quickly detect a malfunction
when a personal computer is used with the optional software installed. (Refer to the "Yamaha Diag-
nostic System Instruction Manual".)
È ECM identification
É Destination
1-17
General information
3
2
6
7
5 Thermoswitch
6 Intake air temperature sensor
7 ECM
8 Oil pressure sensor
È
63P-00
63P-10
63P-20
4
5
8
É
EUR
USA, CAN, OCE
JPN
1
S63P1230
S63P1240
63P3F11