Yamaha FJR13AG Service Manual page 689

Fault code No. ABS_41
Order Item/components and probable cause
4 Brake lines
5 Hydraulic unit assembly
Fault code No. ABS_42, ABS_47
EWA17500
WARNING
The rear brake will not function properly if the connections are reversed.
• Brake pipe/middle joint assembly "1" and brake hose "2" inlet: from the rear brake master cyl-
inder
• Brake pipe "3" outlet: to the proportioning valve
• Brake pipe "4" outlet: to the rear brake caliper
TIP
• If the brake pipe inlet and outlet connections are reversed on the hydraulic unit, the brake pedal will
be pressed down to its full-stroke position without responding, and then it will be pushed back slowly
without pulsating when the final check on page "[C-3] FINAL CHECK" on page 8-220 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
"[C-3] FINAL CHECK" on page 8-220 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 "[C-3] FINAL CHECK" on page 8-220 is performed.
ABS (ANTI-LOCK BRAKE SYSTEM)
Symptom Front wheel will not recover from the locking tenden-
cy even though the signal is continuously transmit-
ted from the ABS ECU to release the hydraulic
pressure (when the battery voltage is normal)
Check or maintenance job
• Check the brake lines for kinks and deterioration.
EWA16730
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 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 assembly. Be sure to
connect the brake pipes and coupler correctly and se-
curely. Check the hydraulic unit operation.
Refer to "HYDRAULIC UNIT OPERATION TESTS" on
page 4-83.
8-212
3
5
1
4
2
6