Fault Code Abs_18; Fault Code Abs_46; Fault Code Abs_21 - Yamaha FZ8NA Service Manual

ABS_18
Fault code No.
ABS_46
Item/components and probable
Order
cause
1 Installed condition of wheel bearings,
axle, sensor housing, and sensor
rotor.
2 Foreign material inside sensor hous-
ing.
3 Defective sensor rotor.
Fault code No. ABS_21
Item/components and probable
Order
cause
1 Open or short circuit in solenoid cir-
cuit.
ABS (ANTI-LOCK BRAKE SYSTEM)
Missing pulses detected in the rear wheel sen-
Symptom
sor signal.
Check or maintenance job
Check the components for loose-
ness, distortion, and bends.
Refer to "CHECKING THE REAR
WHEEL" on page 4-24.
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
4-25.
• Check the surface of the sensor
rotor for damage.
• If there is visible damage,
replace the sensor rotor.
Hydraulic unit solenoid circuit is open or short-
Symptom
circuited.
Check or maintenance job
Replace the hydraulic unit assem-
bly.
8-153
Reinstatement
confirmation
method
• Turn the main
switch to "ON"
and check
that the ABS
warning light
comes on for
2 seconds,
then goes off.
• Perform a trial
run at a con-
stant speed of
30 km/h and
check that the
ABS warning
light does not
come on.
Reinstatement
confirmation
method
• Turn the main
switch to "ON"
and check
that the ABS
warning light
comes on for
2 seconds,
then goes off.
• Perform
hydraulic unit
operation test
1 and check
that the oper-
ation of the
hydraulic unit
is normal.