Yamaha XSR 900 2022 Service Manual page 481

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
DTC
44* Rear wheel sensor (miss-
46* ing pulses)
51 Vehicle system power
supply (voltage of ABS
ECU power supply is high)
53 Vehicle system power
supply (voltage of ABS
ECU power supply is low)
55 Hydraulic unit assembly
(ABS ECU) (defective
ABS ECU)
56 Hydraulic unit assembly
(ABS ECU) (abnormal in-
ternal circuit)
57 Vehicle CAN communica-
tion line or power source of
vehicle system
62 Power supply voltage fail-
ure in pressure sensor
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 hy-
draulic unit assembly
(ABS ECU) is too high.
Power voltage supplied to
the ABS ECU in the hy-
draulic unit assembly
(ABS ECU) is too low.
Abnormal data is detected
in the hydraulic unit as-
sembly (ABS ECU).
Abnormality detected in of
hydraulic unit assembly
(ABS ECU).
Short-circuit in CAN com-
munication line or the volt-
age that supplies the
hydraulic unit assembly
(ABS ECU) is too low.
Abnormality detected in
pressure sensor power
supply circuit of hydraulic
unit assembly (ABS ECU).
Symptom
9-75
Check point
• Foreign material ad-
hered around the rear
wheel sensor
• Incorrect installation of
the rear wheel
• Defective sensor rotor or
incorrect installation of
the rotor
• Defective rear wheel
sensor or incorrect in-
stallation of the sensor
• Defective battery
• Disconnected battery
terminal
• Defective charging sys-
tem
• Defective battery
• Defective coupler be-
tween the battery and the
hydraulic unit assembly
(ABS ECU)
• Open or short circuit in
the wire harness be-
tween the battery and the
hydraulic unit assembly
(ABS ECU)
• Defective charging sys-
tem
• Defective hydraulic unit
assembly (ABS ECU)
• Defective hydraulic unit
assembly (ABS ECU)
• Short-circuit in CAN
communication line
• Defective battery
• Defective coupler be-
tween battery and hy-
draulic unit assembly
(ABS ECU)
• Wire harness between
battery and hydraulic unit
is interrupted or has
short-circuited
• Defective charging sys-
tem
• Defective hydraulic unit
assembly (ABS ECU)