Yamaha TMAX 2020 Service Manual page 531

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
DTC
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)
56 Hydraulic unit assembly
(abnormal internal power
supply)
63 Front wheel sensor power
supply (voltage of power
supply is low)
64 Rear wheel sensor power
supply (voltage of power
supply is low)
* The DTC No. varies according to the vehicle conditions.
Item
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 detected
in the hydraulic unit as-
sembly.
Abnormality is detected in
the power supply circuit in
the hydraulic unit assem-
bly.
Power voltage supplied
from the ABS ECU to the
front wheel sensor is too
low.
Power voltage supplied
from the ABS ECU to the
rear wheel sensor is too
low.
Symptom
9-57
Check point
• Defective battery
• Defective coupler be-
tween the battery and the
hydraulic unit assembly
• Open or short circuit in
the wire harness be-
tween the battery and the
hydraulic unit assembly
• Defective charging sys-
tem
• Defective battery
• Defective coupler be-
tween the battery and the
hydraulic unit assembly
• Open or short circuit in
the wire harness be-
tween the battery and the
hydraulic unit assembly
• Defective charging sys-
tem
• Defective hydraulic unit
assembly
• Defective hydraulic unit
assembly
• Defective hydraulic unit
assembly
• Short circuit in the wire
harness between the
front wheel sensor and
the hydraulic unit assem-
bly
• Defective front wheel
sensor
• Defective hydraulic unit
assembly
• Short circuit in the wire
harness between the
rear wheel sensor and
the hydraulic unit assem-
bly
• Defective rear wheel
sensor
• Defective hydraulic unit
assembly