Yamaha FJR1300A(D), Service Manual

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ABS (ANTI-LOCK BRAKE SYSTEM)
8-142
TIP
Vehicle possibly ridden on uneven roads.
5 Hydraulic unit assembly internal mal-
function. Replace the hydraulic unit assembly.
Fault code No. ABS_15 Symptom No continuity in the front wheel sensor circuit.
Order Item/components and probable
cause
Check or maintenance job
1 Connections
• Front wheel sensor coupler
• ABS ECU coupler • Check the coupler for any pins that may be pulled
out.
• Check the locking condition of the coupler.
• If there is a malfunction, connect the coupler se-
curely or replace the wire harness.
TIP
Turn the main switch to “OFF” before disconnecting
or connecting a coupler.
2 Wire harness continuity. • Check for continuity between the white terminal
“1” and the white terminal “3” and between the
black terminal “2” and the black terminal “4”.
• If there is no continuity, the wire harness is defec-
tive. Replace the wire harness.
• Check that there is no continuity between the
ground and the white terminal “1” or white termi-
nal “3” and between the ground and the black ter-
minal “2” or black terminal “4”.
• If there is continuity, the wire harness is defective.
Replace the wire harness.
• Check that there is no continuity between the
white terminal “1” and the black terminal “2” and
between the white terminal “3” and the black ter-
minal “4”.
• If there is continuity, the wire harness is defective.
Replace the wire harness.
5. ABS ECU
6. Front wheel sensor
Fault code No. ABS_14
ABS_27 Symptom Incorrect signal from the rear wheel sensor is
detected.
Order Item/components and probable
cause
Check or maintenance job
W Gy W B
W B G / W L / W W / Y
L / B B / W Gy W G / R
L / R Y W / L G / Y Sb Br / W
B / W
B / G
R
R / L
L / Y
2
1
4 3
6 5