Yamaha FJR 1300 AE 2014 Service Manual page 605

Fault code No. ABS_41
Order Item/components and probable
cause
1 Rotation of wheel
2 Brake master cylinder and brake cali-
per
3 Brake fluid
4 Brake lines
5 Hydraulic unit assembly
ABS (ANTI-LOCK BRAKE SYSTEM)
Symptom Front wheel will not recover from the locking
tendency even though the signal is continuous-
ly transmitted from the ABS ECU to release the
hydraulic pressure (when the battery voltage is
normal)
Check or maintenance job
• Check that there is no brake disc drag on the front
wheel and make sure that it rotates smoothly.
• Check the front wheel axle for loose bearings and
bends, and the brake discs for distortion.
Refer to "CHECKING THE FRONT BRAKE
DISCS" on page 4-42.
• Check that the brake fluid pressure is correctly
transmitted to the brake calipers when the 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 and the brake fluid reservoir for
water, foreign materials, solidification, and con-
tamination.
• Check for air in the brake lines.
• Check the brake lines for kinks and deterioration.
EWA3P6D005
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 and from the hydraulic unit to the front brake
calipers and the metering valve are correct.
See WARNING and TIP.
If the malfunction is not corrected after checking
items (1) to (4), replace the hydraulic unit assem-
bly. Be sure to connect the brake pipes and coupler
correctly and securely. Check the hydraulic unit op-
eration.
Refer to "HYDRAULIC UNIT OPERATION TESTS"
on page 4-70.
8-154
WARNING
5
1
3 4
2
6