Yamaha F150B Service Manual page 49

Circuit diagram
Pulser coil #1
Pulser coil #1
Pulser coil #2
Pulser coil #2
TPS
Air pressure sensor
Air pressure sensor
Ground
Ground
Engine temperature sensor
Engine temperature sensor
Air temperature sensor
Air temperature sensor
Engine shut-off switch
Engine shut-off switch
Thermoswitch
Thermoswitch
Neutral switch
YDIS
Engine start switch
Main switch
Battery
Battery
Same marks are connected by each other. Same marks are connected by each other.
14
15
10
34
33
8
35
7
4
37
Neutral switch
31
32
42
26
13
Main relay
Main relay
40
39
41
17
Diagnostic flash indicator
27
Engine
Engine
ECM
ECM
3
2
T
High-pressure fuel pump
High-pressure fuel pump
43
30
16
Electronic control system
Fuel injector #1
Fuel injector #1
Fuel injector #2
Fuel injector #2
Fuel injector #3
Fuel injector #3
Fuel injector #4
Fuel injector #4
Check engine lamp
Alert buzzer
Alert buzzer
BZ
Tachometer
Tacho meter
P
0
1
2
3
4
5
6
7
8
9
10
A
2-6