Yamaha R15 2022 Service Manual page 466

Fault code No.
Item
Symptom
Order Item/components and probable cause
4 Defective charging system
5 Defective hydraulic unit assembly
Fault code No. 55
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Defective hydraulic unit assembly
Fault code No. 56
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Defective hydraulic unit assembly
ABS (ANTI-LOCK BRAKE SYSTEM)
54
Hydraulic unit assembly (defective ABS solenoid and ABS motor
power supply circuits)
Abnormality is detected in the solenoid or motor power supply circuit
in the hydraulic unit assembly.
55
Hydraulic unit assembly (defective ABS ECU)
Abnormal data is detected in the hydraulic unit assembly.
56
Hydraulic unit assembly (abnormal internal power supply)
Abnormality is detected in the power supply circuit in the hydraulic
unit assembly.
Check or maintenance job
Check the charging system.
Refer to "CHARGING SYSTEM" on page 8-9.
If the above items were performed and no malfunctions
were found, replace the hydraulic unit assembly.
Refer to "ABS (ANTI-LOCK BRAKE SYSTEM)" on page
8-101.
Check or maintenance job
Replace the hydraulic unit assembly.
Refer to "ABS (ANTI-LOCK BRAKE SYSTEM)" on page
8-101.
Check or maintenance job
Replace the hydraulic unit assembly.
Refer to "ABS (ANTI-LOCK BRAKE SYSTEM)" on page
8-101.
8-133
ELEC – +