Yamaha FJR1300AS(X), Service Manual

Page: 646 / 754

ABS (ANTI-LOCK BRAKE SYSTEM)
8-169
WARNING
EWA3P6D006
The front brakes will not function properly if the connections are reversed.
• Brake pipe/lower joint assembly “1” and brake pipe “2” inlet: from the front brake master cyl-
inder
• Brake pipe/upper joint assembly “3” and brake pipe “4” outlet: to the front brake calipers
• Brake pipe “5” outlet: to the metering valve
• Brake pipe “6” outlet: to the right front brake caliper
NOTE:
• If the brake pipe inlet and outlet connections are incorrect on the hydraulic unit, the brake lever will be
pulled to its full-stroke position without responding, and then it will be pushed back slowly without pul-
sating when the final check on page “[D-3] FINAL CHECK” on page 8-180 is performed.
• If the front and rear brake pipe connections are reversed on the hydraulic unit, the pulsating action in
the brake lever and brake pedal will be performed in the reverse order when the final check on page
“[D-3] FINAL CHECK” on page 8-180 is performed.
• If the brake pipes (to the proportioning valve and the metering valve) are switched during assembly,
the brakes will continue to operate as normal. However, the reduction of the hydraulic pressure for the
rear brake and part of the right front brake will be reversed during the ABS operation when the final
check on page “[D-3] FINAL CHECK” on page 8-180 is performed.
5 Hydraulic unit assembly If the malfunction is not corrected
after checking items (1) to (4), re-
place the hydraulic unit assembly.
Be sure to connect the brake
pipes and coupler correctly and
securely. Check the hydraulic unit
operation.
Refer to “HYDRAULIC UNIT OP-
ERATION TESTS” on page 4-66.
Fault code No. AbS_41 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)
Order Item/components and probable
cause
Check or maintenance job Reinstatement
confirmation
method