Yamaha FJR1300AS(X) Service Manual page 254

When the main switch is turned to "ON", a
single pulse will be generated in the brake le-
ver "1". After the pulse is generated in the
brake lever, it is generated in the brake pedal
"2" twice.
NOTE:
A single pulse will be felt in the brake lever once,
then in the brake pedal twice. The second per-
son should confirm that the rear brake force is
released during the second pulse in the brake
pedal, third pulse overall, by manually applying
force to rotate the rear wheel. If the rear brake
force is released during the second pulse in the
brake pedal, the second person will be able to
rotate the rear wheel for 0.1 second.
1
ECA3P6D019
CAUTION:
• Check that the pulse is felt in the brake le-
ver once, and then in the brake pedal twice.
• If the pulse is felt in the brake pedal before
it is felt in the brake lever, check that the
brake hoses and brake pipes are connected
correctly to the hydraulic unit assembly.
• If the rear brake force is not released during
the second pulse in the brake pedal, but
during the pulse in the brake lever or during
the first pulse in the brake pedal, check that
the brake hoses and brake pipes are con-
nected correctly to the hydraulic unit as-
sembly.
ABS (ANTI-LOCK BRAKE SYSTEM)
• If the pulse is hardly felt in either the brake
lever or brake pedal, check that the brake
hoses and brake pipes are connected cor-
rectly to the hydraulic unit assembly.
• If the operation of the hydraulic unit is normal,
Hydraulic unit operation test 2
EWA13120
Securely support the vehicle so that there is
no danger of it falling over.
1. Place the vehicle on the centerstand.
2. Turn the main switch to "OFF".
3. Remove:
• Front cowling right inner panel 1
4. Check:
• Battery voltage
2
NOTE:
• If the battery voltage is lower than 12.8 V,
charge the battery, and then perform hydraulic
unit operation test 2.
• If the battery voltage is lower than 10 V, the
ABS warning light comes on and the ABS does
not operate.
5. Connect the test coupler adapter "1" to the
4-67
delete all of the fault codes.
WARNING
Refer to "GENERAL CHASSIS" on page 4-1.
Lower than 12.8 V → Charge or replace the
battery.
Battery voltage
Higher than 12.8 V
ABS test coupler "2".
Test coupler adapter
90890-03149