DTC C0031:01/C0031:11/C0031:12/C0031:14/C0031:28/C0031:64 [DSC HU/CM]

id040262846100

DTC
C0031:01
ABS wheel-speed sensor (LF)
C0031:11
C0031:12
C0031:14
C0031:28
C0031:64
DETECTION CONDITION
•  C0031:01
?  Malfunction detected in ABS wheel-speed sensor (LF) power supply voltage.
•  C0031:11
?  Short to ground detected in ABS wheel-speed sensor (LF) power supply.
•  C0031:12
?  ABS wheel-speed sensor (LF) signal system detects power supply short circuit.
•  C0031:14
?  ABS wheel-speed sensor (LF) signal system detects short to ground or open circuit.
•  C0031:28
?  ABS wheel-speed sensor (LF) detects extremely high vehicle speed.
•  C0031:64
?  ABS wheel-speed sensor (LF) error signal is detected.
FAIL-SAFE FUNCTION
•  Refer to “Fail-safe function table”. (See DTC TABLE [DSC HU/CM].)
POSSIBLE CAUSE
•  Short to power circuit in wiring harness between ABS wheel-speed sensor (LF) terminal B and DSC HU/CM terminal W
•  Short to ground circuit in wiring harness between ABS wheel-speed sensor (LF) terminal A and DSC HU/CM terminal S
•  Short to ground circuit in wiring harness between ABS wheel-speed sensor (LF) terminal B and DSC HU/CM terminal W
•  Open circuit in wiring harness between ABS wheel-speed sensor (LF) terminal A and DSC HU/CM terminal S
•  Open circuit in wiring harness between ABS wheel-speed sensor (LF) terminal B and DSC HU/CM terminal W
•  ABS sensor rotor (LF) malfunction
•  ABS wheel-speed sensor (LF) installation malfunction
•  ABS wheel-speed sensor (LF) malfunction
•  DSC HU/CM malfunction

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT ABS WHEEL-SPEED SENSOR (LF) DATA MONITOR
•  Using the M-MDS, perform the PID inspection for ABS wheel-speed sensor (LF).
•  Is the ABS wheel-speed sensor (LF) normal?
Yes
Go to Step5.
No
Go to the next step.
2
INSPECT ABS WHEEL-SPEED SENSOR (LF) SIGNAL CIRCUIT FOR SHORT TO POWER CIRCUIT
•  Disconnect the ABS wheel-speed sensor (LF) connector.
•  Measure the voltage between ABS wheel-speed sensor (LF) terminal B (wiring harness-side)—body ground
•  Is the voltage 10 V or less?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between ABS wheel-speed sensor (LF) terminal B and DSC HU/CM terminal W.
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to power circuit.
Go to Step7.
3
INSPECT ABS WHEEL-SPEED SENSOR (LF) CIRCUIT FOR SHORT TO GROUND CIRCUIT
•  Disconnect the ABS wheel-speed sensor (LF) connector.
•  Inspect for continuity as followings:
?  ABS wheel-speed sensor (LF) terminal A (wiring harness-side)—body ground
?  ABS wheel-speed sensor (LF) terminal B (wiring harness-side)—body ground
•  Is there continuity?
Yes
Refer to the wiring diagram and verify whether or not there is a common connector in the followings:
•  ABS wheel-speed sensor (LF) terminal A—DSC HU/CM terminal S
•  ABS wheel-speed sensor (LF) terminal B—DSC HU/CM terminal W
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to ground circuit.
Go to Step7.
No
Go to the next step.
4
INSPECT ABS WHEEL-SPEED SENSOR (LF) CIRCUIT FOR OPEN CIRCUIT
•  Disconnect the ABS wheel-speed sensor (LF) connector.
•  Disconnect the DSC HU/CM connector.
•  Inspect for continuity as followings:
?  ABS wheel-speed sensor (LF) terminal A (wiring harness-side)—DSC HU/CM terminal S
?  ABS wheel-speed sensor (LF) terminal B (wiring harness-side)—DSC HU/CM terminal W
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector in the followings:
•  ABS wheel-speed sensor (LF) terminal A—DSC HU/CM terminal S
•  ABS wheel-speed sensor (LF) terminal B—DSC HU/CM terminal W
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a open circuit.
Go to Step7.
5
VISUALLY INSPECT ABS SENSOR ROTOR (LF)
•  Visually inspect the ABS sensor rotor for foreign material adhering or improper installation.
•  Is the ABS sensor rotor (LF) normal?
Yes
Go to the next step.
No
Replace the ABS sensor rotor (LF), then go to Step7.
(See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION.)
6
INSPECT CLEARANCE BETWEEN ABS SENSOR ROTOR (LF) AND ABS WHEEL-SPEED SENSOR (LF)
•  Measure the clearance between ABS sensor rotor (LF) and ABS wheel-speed sensor (LF).
•  Is the clearance normal?
Yes
Go to the next step.
No
Replace the malfunction part, then go to the next step.
7
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Using the M-MDS, clear the DTC from the DSC HU/CM.
•  Using the M-MDS, perform the DSC HU/CM DTC inspection.
•  Is the same DTC present?
Yes
Repeat the inspection from Step1.
If the malfunction recurs, replace the DSC HU/CM, then go to the next step.
(See DSC HU/CM REMOVAL/INSTALLATION.)
No
Go to the next step.
8
VERIFY NO DTC IS PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [DSC HU/CM].)
No
DTC troubleshooting completed.