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SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
* The DTC No. varies according to the vehicle conditions.
53 Vehicle system power
supply (voltage of ABS
ECU power supply is low)
Power voltage supplied to
the ABS ECU in the hy-
draulic unit assembly is
too low.
• 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
54 Hydraulic unit assembly
(defective ABS solenoid
and ABS motor power
supply circuits)
Abnormality is detected in
the solenoid or motor pow-
er supply circuit in the hy-
draulic unit assembly.
• 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
55 Hydraulic unit assembly
(defective ABS ECU)
Abnormal data is detected
in the hydraulic unit as-
sembly.
• Defective hydraulic unit
assembly
56 Hydraulic unit assembly
(abnormal internal power
supply)
Abnormality is detected in
the power supply circuit in
the hydraulic unit assem-
bly.
• Defective hydraulic unit
assembly
63 Front wheel sensor power
supply (voltage of power
supply is low)
Power voltage supplied
from the ABS ECU to the
front wheel sensor is too
low.
• 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
64 Rear wheel sensor power
supply (voltage of power
supply is low)
Power voltage supplied
from the ABS ECU to the
rear wheel sensor is too
low.
• 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
DTC Item Symptom Check point
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