Yamaha XVS950CU 2014, Service Manual, Page: 22 / 580

FEATURES
1-13
• ABS ECU
The ABS ECU is integrated with the hydraulic unit to achieve a compact and lightweight design.
As shown in the block following diagram, the ABS ECU receives wheel sensor signals from the front
and rear wheels and also receives signals from other monitor circuits.
The necessary actions are confirmed using the monitor circuit and control signals are transmitted to
the hydraulic unit assembly.
ABS control operation
The ABS control operation performed in the ABS ECU is divided into the following two parts.
• Hydraulic control
• Self-diagnosis
When a malfunction is detected in the ABS, a fault code is stored in the memory of the ABS ECU for
easy problem identification and troubleshooting.
14
7 4
5 6
2
3
1
9
10 11
12
13
17
15
24
20
22
23
21
26
27
18
19
16
25
8
1. Battery
2. AC magneto
3. Rectifier/regulator
4. Main fuse
5. ABS motor fuse
6. ABS solenoid fuse
7. Main switch
8. ABS ECU fuse
9. Signaling system fuse
10. Rear brake light switch
11. Front brake light switch
12. Tail/brake light
13. ABS test coupler
14. Hydraulic unit assembly 15. ABS ECU
16. ABS motor relay
17. Solenoid relay
18. Front brake outlet solenoid
19. Front brake inlet solenoid
20. Rear brake outlet solenoid
21. Rear brake inlet solenoid
22. ABS motor
23. Meter assembly
24. ABS warning light
25. ECU (engine control unit)
26. Front wheel sensor
27. Rear wheel sensor