Yamaha WR250R Service Manual page 301

FUEL INJECTION SYSTEM
1. AC magneto
3. Main switch
4. Battery
5. Main fuse
6. Starter relay
8. Right handlebar switch
9. Engine stop switch
10. Start switch
11. Relay unit
12. Sidestand switch
13. Neutral switch
14. Clutch switch
15. Fuel pump
16. ECU
17. Ignition coil
18. Spark plug
19. ITS solenoid
20. Fuel injector
21. AI solenoid
22. Intake air temperature sensor
23. Coolant temperature sensor
24. Speed sensor
25. Throttle position sensor
26. Intake air pressure sensor
27. Lean angle sensor
28. EXUP servo motor
32. Engine trouble warning light
42. Headlight relay
52. Radiator fan motor relay
54. Headlight fuse
55. Signaling system fuse
56. Ignition fuse
58. EFI fuse
59. Backup fuse
8-30