ABS (ANTI-LOCK BRAKE SYSTEM)
8-145
2 Foreign material inside sensor hous-
ing.
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 4-26.
3 Defective sensor rotor. • Check the surface of the sensor rotor for damage.
• If there is visible damage, replace the sensor ro-
tor.
Fault code No. ABS_18
ABS_46
Symptom Missing pulses detected in the rear wheel sen-
sor signal.
Order Item/components and probable
cause
Check or maintenance job
1 Installed condition of wheel bearings,
axle, sensor housing, and sensor ro-
tor.
Check the components for looseness, distortion,
and bends.
Refer to “CHECKING THE REAR WHEEL” on page
4-34.
2 Foreign material inside sensor hous-
ing.
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 4-34.
3 Defective sensor rotor. • Check the surface of the sensor rotor for damage.
• If there is visible damage, replace the sensor ro-
tor.
Fault code No. ABS_21 Symptom Hydraulic unit solenoid circuit is open or short-
circuited.
Order Item/components and probable
cause
Check or maintenance job
1 Open or short circuit in solenoid cir-
cuit.
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 cir-
cuit).
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 8-7.
Fault code No. ABS_17
ABS_45
Symptom Missing pulses detected in the front wheel sen-
sor signal.
Order Item/components and probable
cause
Check or maintenance job
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