Yamaha N MAX GPD150-A 2015, Service Manual

Page: 414 / 450

ABS (ANTI-LOCK BRAKE SYSTEM)
8-89
Fault code No. 63
Fault code No. 63
Item Front wheel sensor power supply (voltage of power supply is low)
Symptom
Power voltage supplied from the ABS ECU to the front wheel sensor is
too low.
Order Item/components and probable cause Check or maintenance job
1 Short circuit in the wire harness between
the front wheel sensor and the hydraulic
unit assembly • Check that there is no short circuit between the Green
terminal “1” and the Blue terminal “2”.
• Check that there is no short circuit between the
Black/White terminal “3” and the Green terminal “1”.
• If there is a short circuit, the wire harness is defective.
Replace the wire harness.
4. ABS ECU
5. Front wheel sensor
2 Defective front wheel sensor • Check that there is no short circuit between the Black
terminal “1” and the White terminal “2”.
• If there is a short circuit, the wheel sensor is defective.
Repair or replace the wheel sensor.
3. ABS ECU
4. Front wheel sensor
3 Defective hydraulic unit assembly Replace the hydraulic unit assembly.
Refer to “ABS (ANTI-LOCK BRAKE SYSTEM)” on page
4-61.
G L
R / L
Br / W B / W
W / L
B
L / R L / B
B / W R
G L Br
Y
Y W
W B
3
1
4
5
2
G L
R / L
Br / W B / W
W / L
B
L / R L / B
B / W R
G L Br
Y
Y W
W B
2
3
4
1