Yamaha FZ 25 2021 Supplementary Service Manual page 227

Fault code No. 44
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Foreign material adhered around the rear
wheel sensor
2 Incorrect installation of the rear wheel
3 Defective sensor rotor or incorrect instal-
lation of the rotor
4 Defective rear wheel sensor or incorrect
installation of the sensor
Fault code No. 51, 52
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Defective battery
2 Disconnected battery terminal
3 Defective charging system
ABS (ANTI-LOCK BRAKE SYSTEM)
44
Rear wheel sensor (missing pulses)
Rear wheel sensor signal is not received properly. (Missing pulses are
detected in the signal while the vehicle is traveling.)
Check or maintenance job
Check the surface of the sensor rotor and wheel sensor
for foreign material, such as metal particles.
Clean the sensor rotor and wheel sensor if necessary.
Check the components for looseness, distortion, and
bends.
Refer to "CHECKING THE REAR WHEEL" in base ser-
vice manual B97-F8197-E0 on page 4-14.
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 4-8.
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 4-8.
51
52
• 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 supply
is high) (for fault code No. 52)
• 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)
Check or maintenance job
Recharge or replace the battery.
Refer to "CHECKING AND CHARGING THE BATTERY"
in base service manual B97-F8197-E0 on page 7-62.
Check the connection. Replace or reconnect the termi-
nal if necessary.
Check the charging system.
Refer to "CHARGING SYSTEM" on page 6-10.
6-97
ELEC
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