Yamaha YZF-R1 2020 Service Manual page 796

EAS20698
51_ABS
EAS33326
TROUBLESHOOTING
Item
Vehicle system power supply (voltage of ABS ECU power supply is high)
Procedure
1. Defective battery
• Recharge or replace the battery, and check again.
Refer to "CHECKING AND CHARGING THE BATTERY" on page 8-42.
2. Disconnected battery terminal
• Check the connection.
Is check result OK?
YES
→ Go to step 3.
NO
→ Replace or reconnect the terminal.
3. Defective charging system
• Check the charging system.
Refer to "CHARGING SYSTEM" on page 8-12.
Is check result OK?
YES
→ Replace the hydraulic unit assembly (ABS ECU).
NO
→ Confirm the cause of the problem and repair it, and check again.
9-301
51_ABS