Yamaha MBK X-MAX 300 2017 Service Manual page 412

Fault code No.
Item
Symptom
Order Item/components and probable cause
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.
Check or maintenance job
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
4-63.
55
Hydraulic unit assembly (defective ABS ECU)
Abnormal data is detected in the hydraulic unit assembly.
Check or maintenance job
Replace the hydraulic unit assembly.
Refer to "ABS (ANTI-LOCK BRAKE SYSTEM)" on page
4-63.
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
Replace the hydraulic unit assembly.
Refer to "ABS (ANTI-LOCK BRAKE SYSTEM)" on page
4-63.
8-107