Yamaha XSR 900 2022 Service Manual page 423

IMMOBILIZER SYSTEM
3. Fuse box
4. Main fuse
5. Main switch
9. Backup fuse 2
11. Ignition fuse 2
12. Ignition fuse
20. Backup fuse
23. Battery
24. Engine ground
27. Immobilizer unit
49. ECU (Engine Control Unit)
67. YDT coupler
68. Meter assembly
69. Multi-function meter
71. Immobilizer system indicator light
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