Ecm Circuit; Circuit Diagram - Yamaha F150A Service Manual

ECM circuit

Circuit diagram

TIP:
The circled numbers in the illustration indicate the engine ECM terminal numbers.
1. Pulser coil #1
2. Pulser coil #2
3. TPS
4. Air pressure sensor
5. Oil pressure sensor
6. Water pressure
sensor
7. Speed sensor
9. Engine temperature sensor
10. Air temperature sensor
11. Shift cut-off switch
12. Engine shut-off switch
13. Thermoswitch
14. Trim sensor
15. Water detection switch
16. Shift position switch
17. YDIS
19. Rectifier
Regulator
20. Battery
14
15
5V
10
34
33
29
11
12
8. Ground
8
35
7
9
4
37
36
5
31
32
42
26
13
18. Engine start switch
40
39
41
17
6
20
18
21
19
22
44
24
21. Engine
ECM
28
27
3
2
37. High-pressure fuel pump
43
1
23
30
16
22. Main relay
5-9
23. Fuel injector #1
24. Fuel injector #2
25. Fuel injector #3
26. Fuel injector #4
27. Vapor shut-off valve
28. ISC valve
29. Ignition coil #1, 4
30. Ignition coil #2, 3
31. Oil pressure alert indicator
32. Overheat alert indicator
33. Diagnostic flash indicator
34. Alert buzzer
BZ
35. Multi-engine system switch
36. Tachometer
P
38. 6Y8
Multifunction
Meter
ECM circuit
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