Yamaha XVS950CU 2014 Service Manual page 517

ABS (ANTI-LOCK BRAKE SYSTEM) (for ABS models)
Fault code
No.
44 Rear wheel sensor (miss-
ing pulses)
51 • Vehicle system power
52 supply (voltage of ABS
ECU power supply is
high) (for fault code No.
51)
• Vehicle system power
supply (voltage of wheel
sensor power supply is
high) (for fault code No.
52)
53 Vehicle system power
supply (voltage of ABS
ECU power supply is low)
54 Hydraulic unit assembly
(defective ABS solenoid
and ABS motor power
supply circuits)
55 Hydraulic unit assembly
(defective ABS ECU)
Item
Rear wheel sensor signal
is not received properly.
(Missing pulses are de-
tected in the signal while
the vehicle is traveling.)
• Power voltage supplied
to the ABS ECU in the
hydraulic unit assembly
is too high. (For fault
code No. 51)
• Power voltage supplied
to the wheel sensor is
too high. (For fault code
No. 52)
Power voltage supplied to
the ABS ECU in the hy-
draulic unit assembly is
too low.
Abnormality is detected in
the solenoid or motor pow-
er supply circuit in the hy-
draulic unit assembly.
Abnormal data is detect-
ed in the hydraulic unit as-
sembly.
7-126
Symptom
• Foreign material ad-
• Incorrect installation of
• Defective sensor rotor or
• Defective rear wheel
• Defective battery
• Disconnected battery
• Defective charging sys-
• Defective battery
• Defective coupler be-
• Open or short circuit in
• Defective charging sys-
• Defective battery
• Defective coupler be-
• Open or short circuit in
• Defective charging sys-
• Defective hydraulic unit
• Defective hydraulic unit
Check point
hered around the rear
wheel sensor
the rear wheel
incorrect installation of
the rotor
sensor or incorrect in-
stallation of the sensor
terminal
tem
tween the battery and
the hydraulic unit assem-
bly
the wire harness be-
tween the battery and
the hydraulic unit assem-
bly
tem
tween the battery and
the hydraulic unit assem-
bly
the wire harness be-
tween the battery and
the hydraulic unit assem-
bly
tem
assembly
assembly