Yamaha FJR13AG, Service Manual

Page: 684 / 784

ABS (ANTI-LOCK BRAKE SYSTEM)
8-207
Fault code No. ABS_17, ABS_45
Fault code No. ABS_18, ABS_46
Fault code No. ABS_21
Fault code No. ABS_22
Fault code No. ABS_17
ABS_45 Symptom Missing pulses detected in the front wheel sensor
signal.
Order Item/components and probable cause Check or maintenance job
1 Installed condition of wheel bearings, ax-
le, sensor housing, and sensor rotor. Check the components for looseness, distortion, and
bends.
Refer to “CHECKING THE FRONT WHEEL” on page
4-32.
2 Foreign material inside sensor housing. Check the interior of the sensor housing and the surface
of the sensor rotor for foreign material, such as metal
particles. Clean the sensor housing and sensor rotor if
necessary.
Refer to “MAINTENANCE OF THE FRONT WHEEL
SENSOR AND SENSOR ROTOR” on page 4-33.
3 Defective sensor rotor. • Check the surface of the sensor rotor for damage.
• If there is visible damage, replace the sensor rotor.
Fault code No. ABS_18
ABS_46 Symptom Missing pulses detected in the rear wheel sensor sig-
nal.
Order Item/components and probable cause Check or maintenance job
1 Installed condition of wheel bearings, ax-
le, sensor housing, and sensor rotor. Check the components for looseness, distortion, and
bends.
Refer to “CHECKING THE REAR WHEEL” on page
4-42.
2 Foreign material inside sensor housing. Check the interior of the sensor housing and the surface
of the sensor rotor for foreign material, such as metal
particles. Clean the sensor housing and sensor rotor if
necessary.
Refer to “MAINTENANCE OF THE REAR WHEEL
SENSOR AND SENSOR ROTOR” on page 4-42.
3 Defective sensor rotor. • Check the surface of the sensor rotor for damage.
• If there is visible damage, replace the sensor rotor.
Fault code No. ABS_21 Symptom Hydraulic unit solenoid circuit is open or short-cir-
cuited.
Order Item/components and probable cause Check or maintenance job
1 Open or short circuit in solenoid circuit. Replace the hydraulic unit assembly.
Fault code No. ABS_22 Symptom Start switch signal is not received properly (start
switch circuit or start switch monitor circuit).
Order Item/components and probable cause Check or maintenance job
1 Engine startability. Check the electric starting system.
Refer to “ELECTRIC STARTING SYSTEM” on page 8-9.