Yamaha WR250F 2022 Owner's Service Manual page 329

FUEL INJECTION SYSTEM
1. Crankshaft position sensor
2. AC magneto
3. Rectifier/regulator
4. Joint connector
6. Main relay
7. Engine ground
8. Battery
9. Frame ground
10.Main fuse
11.Starter relay
13.Diode 3
17.Diode 2
18.Yamaha diagnostic tool coupler
19.ECU (Engine Control Unit)
20.Ignition coil
21.Spark plug
22.Fuel injector
24.Fuel pump
28.Intake air temperature sensor
29.Coolant temperature sensor
30.Throttle position sensor
31.Intake air pressure sensor
33.Engine stop switch
34.Gear position switch
35.Diode 1
36.Starting circuit cut-off relay
37.Clutch switch
41.Multi-function display
A. Battery sub-lead
B. Wire harness
C. Ignition coil sub-lead
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