Electronic Control System - Yamaha F150A Service Manual

Electronic control system

This model uses an electronic fuel injection control, digital ignition control, over-revving control, alert
control, idle speed control, vapor shut-off valve control, which has been newly added to this model,
and fail-safe control. The engine ECM performs these controls based on data received from each
sensor and switch.
The engine ECM is equipped with a self-diagnosis function. This function can be used to check trou-
ble codes on the YDIS and flash indicator.
It is also equipped with Y-COP as an anti-theft measure (standard for European market and optional
for Oceanian market).
14. Ignition coil
17. Fuel injector
20. Fuel control
21. Ignition control
23. 6Y8 Multifunction
Meter
24. Y-COP
26. Battery
13. Vapor shut-off valve
15. High-pressure fuel pump
18. Idle speed control
22. Engine
25. Hub
27. YDIS
16. ISC valve
19. Vapor shut-off valve control
1. Pulser coil
2. TPS
3. Air pressure sensor
4. Oil pressure sensor
5. Engine temperature sensor
6. Air temperature sensor
7. Thermoswitch
ECM
8. Shift cut-off switch
9. Shift position switch
10. Water detection switch
11. Water pressure sensor (optional)
12. Speed sensor (optional)
2-1
Electronic control system