Yamaha Fazer FZ8-SA, Service Manual

Page: 558 / 610

ABS (ANTI-LOCK BRAKE SYSTEM)
8-163
Fault code No.
ABS_42
ABS_47
Symptom
Rear wheel will not recover from the locking ten-
dency even though the signal is continuously
transmitted from the ABS ECU to release the
hydraulic pressure.
Order
Item/components and probable
cause
Check or maintenance job
Reinstatement
confirmation
method
1 Rotation of wheel • Check that there is no brake disc
drag on the rear wheel and
make sure that it rotates
smoothly.
• Check for brake disc distortion.
Refer to “CHECKING THE
REAR BRAKE DISC” on page 4-
49.
Perform hydrau-
lic unit operation
test 1 and check
that the opera-
tion of the
hydraulic unit is
normal.
2 Brake master cylinder and brake cali-
per • Check that the brake fluid pres-
sure is correctly transmitted to
the brake caliper when the rear
brake pedal is operated and that
the pressure decreases when
the pedal is released.
3 Brake fluid • Visually check the brake fluid in
the brake master cylinder reser-
voir for water, foreign materials,
solidification, and contamination.
• Check for air in the brake lines.
4 Brake lines • Check the brake lines for kinks
and deterioration (particularly
between the hydraulic unit and
the rear brake caliper).
WARNING
EWA4B56009
Only use genuine Yamaha
parts. Using other brake pipes,
hoses and union bolts may
close the brake lines.
• Check that the connections of
the brake lines from the brake
master cylinder to the hydraulic
unit are correct.
See WARNING and TIP.