DTC C0031:11/C0031:15/C0034:11/C0034:15/C0037:11/C0037:15/C003A:11/C003A:15 [DSC HU/CM]

id040262180700

DTC

C0031:11

LF ABS wheel-sensor

C0031:15

C0034:11

RF ABS wheel-sensor

C0034:15

C0037:11

LR ABS wheel-sensor

C0037:15

C003A:11

RR ABS wheel-sensor

C003A:15

DETECTION CONDITION

•  C0031:11, C0034:11, C0037:11, C003A:11

―  Short to GND has been detected in the ABS wheel-speed sensor wiring harness on any of the four vehicle wheels

•  C0031:15, C0034:15, C0037:15, C003A:15

―  Open circuit or short to power supply has been detected in the ABS wheel-speed sensor wiring harness on any of the four vehicle wheels

FAIL-SAFE FUNCTION

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

POSSIBLE CAUSE

•  Short to GND, open or short to power supply circuit in wiring harness between DSC HU/CM and ABS wheel-speed sensor

―  DSC HU/CM terminal F—RF ABS wheel-speed sensor terminal B

―  DSC HU/CM terminal C—RF ABS wheel-speed sensor terminal A

―  DSC HU/CM terminal AG—LF ABS wheel-speed sensor terminal B

―  DSC HU/CM terminal AJ—LF ABS wheel-speed sensor terminal A

―  DSC HU/CM terminal AA—RR ABS wheel-speed sensor terminal A

―  DSC HU/CM terminal X—RR ABS wheel-speed sensor terminal B

―  DSC HU/CM terminal L—LR ABS wheel-speed sensor terminal A

―  DSC HU/CM terminal O—LR ABS wheel-speed sensor terminal B

•  ABS wheel-speed sensor malfunction

•  Poor connection at each connector

Diagnostic Procedure

Step

Inspection

Action

1

INSPECT ABS WHEEL-SPEED SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND

•  Switch the ignition OFF.

•  Disconnect the DSC HU/CM connector.

•  Inspect for continuity as followings:

―  DSC HU/CM terminal F (wiring harness-side)—body ground

―  DSC HU/CM terminal C (wiring harness-side)—body ground

―  DSC HU/CM terminal AG (wiring harness-side)—body ground

―  DSC HU/CM terminal AJ (wiring harness-side)—body ground

―  DSC HU/CM terminal AA (wiring harness-side)—body ground

―  DSC HU/CM terminal X (wiring harness-side)—body ground

―  DSC HU/CM terminal L (wiring harness-side)—body ground

―  DSC HU/CM terminal O (wiring harness-side)—body ground

•  Is there continuity?

Yes

Go to the next step.

No

Go to Step3.

2

INSPECT ABS WHEEL-SPEED SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND

•  Disconnect the ABS wheel-speed sensor connector.

•  Inspect for continuity as followings:

―  DSC HU/CM terminal F (wiring harness-side)—body ground

―  DSC HU/CM terminal C (wiring harness-side)—body ground

―  DSC HU/CM terminal AG (wiring harness-side)—body ground

―  DSC HU/CM terminal AJ (wiring harness-side)—body ground

―  DSC HU/CM terminal AA (wiring harness-side)—body ground

―  DSC HU/CM terminal X (wiring harness-side)—body ground

―  DSC HU/CM terminal L (wiring harness-side)—body ground

―  DSC HU/CM terminal O (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:

•  RF ABS wheel-speed sensor terminal B—DSC HU/CM terminal F

•  RF ABS wheel-speed sensor terminal A—DSC HU/CM terminal C

•  LF ABS wheel-speed sensor terminal B—DSC HU/CM terminal AG

•  LF ABS wheel-speed sensor terminal A—DSC HU/CM terminal AJ

•  RR ABS wheel-speed sensor terminal A—DSC HU/CM terminal AA

•  RR ABS wheel-speed sensor terminal B—DSC HU/CM terminal X

•  LR ABS wheel-speed sensor terminal A—DSC HU/CM terminal L

•  LR ABS wheel-speed sensor terminal B—DSC HU/CM terminal O

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.

•  Repair or replace the malfunctioning part.

If there is no common connector:

•  Repair or replace the wiring harness which has a short to ground.

Go to Step5.

No

Replace the ABS wheel-speed sensor , then go to Step5.

(See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)

(See REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION [REAR BRAKE (DRUM)].)

3

INSPECT ABS WHEEL-SPEED SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT

•  Disconnect the ABS wheel-speed sensor connector.

•  Inspect for continuity as followings:

―  RF ABS wheel-speed sensor terminal B (wiring harness-side)—DSC HU/CM terminal F

―  RF ABS wheel-speed sensor terminal A (wiring harness-side)—DSC HU/CM terminal C

―  LF ABS wheel-speed sensor terminal B (wiring harness-side)—DSC HU/CM terminal AG

―  LF ABS wheel-speed sensor terminal A (wiring harness-side)—DSC HU/CM terminal AJ

―  RR ABS wheel-speed sensor terminal A (wiring harness-side)—DSC HU/CM terminal AA

―  RR ABS wheel-speed sensor terminal B (wiring harness-side)—DSC HU/CM terminal X

―  LR ABS wheel-speed sensor terminal A (wiring harness-side)—DSC HU/CM terminal L

―  LR ABS wheel-speed sensor terminal B (wiring harness-side)—DSC HU/CM terminal O

•  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:

•  RF ABS wheel-speed sensor terminal B—DSC HU/CM terminal F

•  RF ABS wheel-speed sensor terminal A—DSC HU/CM terminal C

•  LF ABS wheel-speed sensor terminal B—DSC HU/CM terminal AG

•  LF ABS wheel-speed sensor terminal A—DSC HU/CM terminal AJ

•  RR ABS wheel-speed sensor terminal A—DSC HU/CM terminal AA

•  RR ABS wheel-speed sensor terminal B—DSC HU/CM terminal X

•  LR ABS wheel-speed sensor terminal A—DSC HU/CM terminal L

•  LR ABS wheel-speed sensor terminal B—DSC HU/CM terminal O

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 an open circuit.

Go to Step5.

4

INSPECT ABS WHEEL-SPEED SENSOR SIGNALCIRCUIT FOR SHORT TO POWER SUPPLY

•  Measure the voltage as followings:

―  DSC HU/CM terminal F (wiring harness-side)—body ground

―  DSC HU/CM terminal C (wiring harness-side)—body ground

―  DSC HU/CM terminal AG (wiring harness-side)—body ground

―  DSC HU/CM terminal AJ (wiring harness-side)—body ground

―  DSC HU/CM terminal AA (wiring harness-side)—body ground

―  DSC HU/CM terminal X (wiring harness-side)—body ground

―  DSC HU/CM terminal L (wiring harness-side)—body ground

―  DSC HU/CM terminal O (wiring harness-side)—body ground

•  Is the voltage 1 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 in the followings:

•  RF ABS wheel-speed sensor terminal B—DSC HU/CM terminal F

•  RF ABS wheel-speed sensor terminal A—DSC HU/CM terminal C

•  LF ABS wheel-speed sensor terminal B—DSC HU/CM terminal AG

•  LF ABS wheel-speed sensor terminal A—DSC HU/CM terminal AJ

•  RR ABS wheel-speed sensor terminal A—DSC HU/CM terminal AA

•  RR ABS wheel-speed sensor terminal B—DSC HU/CM terminal X

•  LR ABS wheel-speed sensor terminal A—DSC HU/CM terminal L

•  LR ABS wheel-speed sensor terminal B—DSC HU/CM terminal O

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 supply.

•  Repair or replace the malfunctioning part.

If there is no common connector:

•  Repair or replace the wiring harness which has a short to power supply.

Go to the next step.

5

VERIFY DTC TROUBLESHOOTING COMPLETED

•  Reconnect all disconnected connectors.

•  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 [L.H.D.].)

(See DSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)

No

Go to the next step.

6

VERIFY NO DTC IS PRESENT

•  Are any DTCs present?

Yes

Go to applicable DTC inspection.

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

No

DTC troubleshooting completed.

DTC	C0031:11	LF ABS wheel-sensor
	C0031:15
	C0034:11	RF ABS wheel-sensor
	C0034:15
	C0037:11	LR ABS wheel-sensor
	C0037:15
	C003A:11	RR ABS wheel-sensor
	C003A:15
DETECTION CONDITION		• C0031:11, C0034:11, C0037:11, C003A:11 ― Short to GND has been detected in the ABS wheel-speed sensor wiring harness on any of the four vehicle wheels • C0031:15, C0034:15, C0037:15, C003A:15 ― Open circuit or short to power supply has been detected in the ABS wheel-speed sensor wiring harness on any of the four vehicle wheels
FAIL-SAFE FUNCTION		Refer to DTC TABLE. (See DTC TABLE [DSC HU/CM].)
POSSIBLE CAUSE		• Short to GND, open or short to power supply circuit in wiring harness between DSC HU/CM and ABS wheel-speed sensor ― DSC HU/CM terminal F—RF ABS wheel-speed sensor terminal B ― DSC HU/CM terminal C—RF ABS wheel-speed sensor terminal A ― DSC HU/CM terminal AG—LF ABS wheel-speed sensor terminal B ― DSC HU/CM terminal AJ—LF ABS wheel-speed sensor terminal A ― DSC HU/CM terminal AA—RR ABS wheel-speed sensor terminal A ― DSC HU/CM terminal X—RR ABS wheel-speed sensor terminal B ― DSC HU/CM terminal L—LR ABS wheel-speed sensor terminal A ― DSC HU/CM terminal O—LR ABS wheel-speed sensor terminal B • ABS wheel-speed sensor malfunction • Poor connection at each connector

Step	Inspection		Action
1	INSPECT ABS WHEEL-SPEED SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND • Switch the ignition OFF. • Disconnect the DSC HU/CM connector. • Inspect for continuity as followings: ― DSC HU/CM terminal F (wiring harness-side)—body ground ― DSC HU/CM terminal C (wiring harness-side)—body ground ― DSC HU/CM terminal AG (wiring harness-side)—body ground ― DSC HU/CM terminal AJ (wiring harness-side)—body ground ― DSC HU/CM terminal AA (wiring harness-side)—body ground ― DSC HU/CM terminal X (wiring harness-side)—body ground ― DSC HU/CM terminal L (wiring harness-side)—body ground ― DSC HU/CM terminal O (wiring harness-side)—body ground • Is there continuity?	Yes	Go to the next step.
1		No	Go to Step3.
2	INSPECT ABS WHEEL-SPEED SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND • Disconnect the ABS wheel-speed sensor connector. • Inspect for continuity as followings: ― DSC HU/CM terminal F (wiring harness-side)—body ground ― DSC HU/CM terminal C (wiring harness-side)—body ground ― DSC HU/CM terminal AG (wiring harness-side)—body ground ― DSC HU/CM terminal AJ (wiring harness-side)—body ground ― DSC HU/CM terminal AA (wiring harness-side)—body ground ― DSC HU/CM terminal X (wiring harness-side)—body ground ― DSC HU/CM terminal L (wiring harness-side)—body ground ― DSC HU/CM terminal O (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: • RF ABS wheel-speed sensor terminal B—DSC HU/CM terminal F • RF ABS wheel-speed sensor terminal A—DSC HU/CM terminal C • LF ABS wheel-speed sensor terminal B—DSC HU/CM terminal AG • LF ABS wheel-speed sensor terminal A—DSC HU/CM terminal AJ • RR ABS wheel-speed sensor terminal A—DSC HU/CM terminal AA • RR ABS wheel-speed sensor terminal B—DSC HU/CM terminal X • LR ABS wheel-speed sensor terminal A—DSC HU/CM terminal L • LR ABS wheel-speed sensor terminal B—DSC HU/CM terminal O 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. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step5.
2		No	Replace the ABS wheel-speed sensor , then go to Step5. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.) (See REAR ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION [REAR BRAKE (DRUM)].)
3	INSPECT ABS WHEEL-SPEED SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT • Disconnect the ABS wheel-speed sensor connector. • Inspect for continuity as followings: ― RF ABS wheel-speed sensor terminal B (wiring harness-side)—DSC HU/CM terminal F ― RF ABS wheel-speed sensor terminal A (wiring harness-side)—DSC HU/CM terminal C ― LF ABS wheel-speed sensor terminal B (wiring harness-side)—DSC HU/CM terminal AG ― LF ABS wheel-speed sensor terminal A (wiring harness-side)—DSC HU/CM terminal AJ ― RR ABS wheel-speed sensor terminal A (wiring harness-side)—DSC HU/CM terminal AA ― RR ABS wheel-speed sensor terminal B (wiring harness-side)—DSC HU/CM terminal X ― LR ABS wheel-speed sensor terminal A (wiring harness-side)—DSC HU/CM terminal L ― LR ABS wheel-speed sensor terminal B (wiring harness-side)—DSC HU/CM terminal O • Is there continuity?	Yes	Go to the next step.
3		No	Refer to the wiring diagram and verify whether or not there is a common connector in the followings: • RF ABS wheel-speed sensor terminal B—DSC HU/CM terminal F • RF ABS wheel-speed sensor terminal A—DSC HU/CM terminal C • LF ABS wheel-speed sensor terminal B—DSC HU/CM terminal AG • LF ABS wheel-speed sensor terminal A—DSC HU/CM terminal AJ • RR ABS wheel-speed sensor terminal A—DSC HU/CM terminal AA • RR ABS wheel-speed sensor terminal B—DSC HU/CM terminal X • LR ABS wheel-speed sensor terminal A—DSC HU/CM terminal L • LR ABS wheel-speed sensor terminal B—DSC HU/CM terminal O 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 an open circuit. Go to Step5.
4	INSPECT ABS WHEEL-SPEED SENSOR SIGNALCIRCUIT FOR SHORT TO POWER SUPPLY • Measure the voltage as followings: ― DSC HU/CM terminal F (wiring harness-side)—body ground ― DSC HU/CM terminal C (wiring harness-side)—body ground ― DSC HU/CM terminal AG (wiring harness-side)—body ground ― DSC HU/CM terminal AJ (wiring harness-side)—body ground ― DSC HU/CM terminal AA (wiring harness-side)—body ground ― DSC HU/CM terminal X (wiring harness-side)—body ground ― DSC HU/CM terminal L (wiring harness-side)—body ground ― DSC HU/CM terminal O (wiring harness-side)—body ground • Is the voltage 1 V or less?	Yes	Go to the next step.
4		No	Refer to the wiring diagram and verify whether or not there is a common connector in the followings: • RF ABS wheel-speed sensor terminal B—DSC HU/CM terminal F • RF ABS wheel-speed sensor terminal A—DSC HU/CM terminal C • LF ABS wheel-speed sensor terminal B—DSC HU/CM terminal AG • LF ABS wheel-speed sensor terminal A—DSC HU/CM terminal AJ • RR ABS wheel-speed sensor terminal A—DSC HU/CM terminal AA • RR ABS wheel-speed sensor terminal B—DSC HU/CM terminal X • LR ABS wheel-speed sensor terminal A—DSC HU/CM terminal L • LR ABS wheel-speed sensor terminal B—DSC HU/CM terminal O 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 supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to the next step.
5	VERIFY DTC TROUBLESHOOTING COMPLETED • Reconnect all disconnected connectors. • 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 [L.H.D.].) (See DSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)
5		No	Go to the next step.
6	VERIFY NO DTC IS PRESENT • Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [DSC HU/CM].)
6	VERIFY NO DTC IS PRESENT • Are any DTCs present?	No	DTC troubleshooting completed.