Yamaha R15 2022, Service Manual

Page: 464 / 497

8-131
ABS (ANTI-LOCK BRAKE SYSTEM)
– + ELEC
Fault code No. 51, 52
2 Incorrect installation of the rear wheel Check the components for looseness, distortion, and
bends.
Refer to “CHECKING THE REAR WHEEL” on page
4-22.
3 Defective sensor rotor or incorrect instal-
lation of the rotor Check the surface of the sensor rotor for damage. Re-
place the sensor rotor if there is visible damage.
Refer to “MAINTENANCE OF THE WHEEL SENSOR
AND SENSOR ROTOR” on page 4-16.
4 Defective rear wheel sensor or incorrect
installation of the sensor Check the wheel sensor for damage and the installed
condition of the sensor. Repair or replace the wheel
sensor if necessary.
Refer to “MAINTENANCE OF THE WHEEL SENSOR
AND SENSOR ROTOR” on page 4-16.
Fault code No.
51
52
Item
• Vehicle system power supply (voltage of ABS ECU power supply is
high) (for fault code No. 51)
• Vehicle system power supply (voltage of wheel sensor power sup-
ply is high) (for fault code No. 52)
Symptom
• Power voltage supplied to the ABS ECU in the hydraulic unit assem-
bly is too high. (for fault code No. 51)
• Power voltage supplied to the wheel sensor is too high. (for fault
code No. 52)
Order Item/components and probable cause Check or maintenance job
1 Defective battery Recharge or replace the battery.
Refer to “CHECKING AND CHARGING THE BAT-
TERY” on page 8-143.
2 Disconnected battery terminal Check the connection. Replace or reconnect the termi-
nal if necessary.
3 Defective charging system Check the charging system.
Refer to “CHARGING SYSTEM” on page 8-9.
Fault code No. 44
Item Rear wheel sensor (missing pulses)
Symptom
Rear wheel sensor signal is not received properly. (Missing pulses
are detected in the signal while the vehicle is traveling.)
Order Item/components and probable cause Check or maintenance job
BCWF8197E0.book Page 131 Thursday, November 18, 2021 9:18 AM