Yamaha Tenere 700 2020, Service Manual

Page: 426 / 472

ABS (ANTI-LOCK BRAKE SYSTEM)
8-115
Fault code No. 21
Fault code No. 24
Fault code No.
18
46
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
1 Foreign material adhered around the rear
wheel sensor 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.
2 Incorrect installation of the rear wheel Check the components for looseness, distortion, and
bends.
Refer to “CHECKING THE REAR WHEEL” on page
4-21.
3 Defective sensor rotor or incorrect instal-
lation of the rotor Check the surface of the sensor rotor for damage.
Replace the sensor rotor if there is visible damage.
Refer to “MAINTENANCE OF THE REAR WHEEL
SENSOR AND SENSOR ROTOR” on page 4-22.
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 REAR WHEEL
SENSOR AND SENSOR ROTOR” on page 4-22.
Fault code No. 21
Item Hydraulic unit assembly (defective solenoid drive circuit)
Symptom
Solenoid drive circuit in the hydraulic unit assembly is open or short-
circuited.
Order Item/components and probable cause Check or maintenance job
1 Defective hydraulic unit assembly Replace the hydraulic unit assembly.
Refer to “ABS (ANTI-LOCK BRAKE SYSTEM)” on page
4-44.
Fault code No. 24
Item Brake light switch or tail/brake light
Symptom
Brake light signal is not received properly while the vehicle is travel-
ing (Brake light circuit, or front or rear brake light switch circuit).
Order Item/components and probable cause Check or maintenance job
1 Defective signaling system (tail/brake light
or brake light switch) Check the brake light switches.
Refer to “CHECKING THE SWITCHES” on page 8-129.
2 Defective coupler between the signaling
system (tail/brake light or brake light
switch) and the hydraulic unit assembly • Check the coupler for any pins that may be pulled out.
• Check the locking condition of the coupler.
• If there is a malfunction, repair it and connect the cou-
pler securely.