Yamaha 2012 TMAX XP500A Service Manual page 484

ABS_42
Fault code No.
ABS_47
Item/components and probable
Order
cause
1 Rotation of wheel
2 Brake master cylinder and brake
caliper
3 Brake fluid
4 Brake lines
5 Hydraulic unit assembly
ABS (ANTI-LOCK BRAKE SYSTEM)
Rear wheel will not recover from wheel lock even
though the signal is continuously transmitted
Symptom
from the ABS ECU and the hydraulic pressure
has been released.
Check or maintenance job
• 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 4-58.
• Check that the brake fluid pressure is correctly
transmitted to the brake caliper when the rear brake
lever is operated and that the pressure decreases
when the lever is released.
• Visually check the brake fluid in the brake master
cylinder reservoir for water, foreign materials, solidi-
fication, and contamination.
• Check for air in the brake lines.
• Check the brake lines for kinks and deterioration
(particularly between the hydraulic unit and the rear
brake caliper).
EWA59C2804
WARNING
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.
If the malfunction is not corrected after checking
items (1) to (4), replace the hydraulic unit assembly.
Be sure to connect the brake hose, brake pipe, and
coupler correctly and securely. Check the hydraulic
unit operation.
Refer to "HYDRAULIC UNIT OPERATION TESTS"
on page 4-72.
8-109