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 A and DSC HU/CM terminal W

• Short to ground circuit in wiring harness between ABS wheel-speed sensor (LF) terminal B and DSC HU/CM terminal S

• Short to ground circuit in wiring harness between ABS wheel-speed sensor (LF) terminal A and DSC HU/CM terminal W

• Open circuit in wiring harness between ABS wheel-speed sensor (LF) terminal B and DSC HU/CM terminal S

• Open circuit in wiring harness between ABS wheel-speed sensor (LF) terminal A 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

Step

Inspection

Action

1

• Using the M-MDS, perform the PID inspection for ABS wheel-speed sensor (LF).

  (See PID/DATA MONITOR INSPECTION [DSC HU/CM].)

• Is the ABS wheel-speed sensor (LF) normal?

Yes

Go to Step5.

No

Go to the next step.

2

• 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 S.

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

• Disconnect the ABS wheel-speed sensor (LF) connector.

• Inspect for continuity as followings:

• ABS wheel-speed sensor (LF) terminal B (wiring harness-side)—body ground

• ABS wheel-speed sensor (LF) terminal A (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 B—DSC HU/CM terminal S

• ABS wheel-speed sensor (LF) terminal A—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

• 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 B (wiring harness-side)—DSC HU/CM terminal S

• ABS wheel-speed sensor (LF) terminal A (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 B—DSC HU/CM terminal S

• ABS wheel-speed sensor (LF) terminal A—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 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

• Measure the clearance between ABS sensor rotor (LF) and ABS wheel-speed sensor (LF).

  (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

• Is the clearance normal?

Yes

Go to the next step.

No

Replace the malfunction part, then go to the next step.

7

• Using the M-MDS, clear the DTC from the DSC HU/CM.

  (See CLEARING DTC [DSC HU/CM].)

• Using the M-MDS, perform the DSC HU/CM DTC inspection.

  (See DTC INSPECTION [DSC HU/CM].)

• 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

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [DSC HU/CM].)

No

DTC troubleshooting completed.