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DTC C0037:01/C0037:11/C0037:12/C0037:14/C0037:28/C0037:64 [DSC HU/CM]

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2016 – MX-5 – Brakes

DTC C0037:01/C0037:11/C0037:12/C0037:14/C0037:28/C0037:64 [DSC HU/CM]

DTC

C0037:01

ABS wheel-speed sensor (LR)

C0037:11

C0037:12

C0037:14

C0037:28

C0037:64

DETECTION CONDITION

  • C0037:01

    • Malfunction detected in ABS wheel-speed sensor (LR) power supply voltage.

  • C0037:11

    • Short to ground detected in ABS wheel-speed sensor (LR) power supply.

  • C0037:12

    • ABS wheel-speed sensor (LR) signal system detects power supply short circuit.

  • C0037:14

    • ABS wheel-speed sensor (LR) signal system detects short to ground or open circuit.

  • C0037:28

    • ABS wheel-speed sensor (LR) detects extremely high vehicle speed.

  • C0037:64

    • ABS wheel-speed sensor (LR) error signal is detected.

FAIL-SAFE FUNCTION

POSSIBLE CAUSE

  • Short to power circuit in wiring harness between ABS wheel-speed sensor (LR) terminal B and DSC HU/CM terminal P

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

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

  • Open circuit in wiring harness between ABS wheel-speed sensor (LR) terminal A and DSC HU/CM terminal R

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

  • ABS sensor rotor (LR) malfunction

  • ABS wheel-speed sensor (LR) installation malfunction

  • ABS wheel-speed sensor (LR) malfunction

  • DSC HU/CM malfunction

Diagnostic Procedure

Step

Inspection

Action

1

INSPECT ABS WHEEL-SPEED SENSOR (LR) DATA MONITOR

Yes

Go to Step5.

No

Go to the next step.

2

INSPECT ABS WHEEL-SPEED SENSOR (LR) SIGNAL CIRCUIT FOR SHORT TO POWER CIRCUIT

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

  • Measure the voltage between ABS wheel-speed sensor (LR) 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 (LR) terminal B and DSC HU/CM terminal P.

    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 (LR) CIRCUIT FOR SHORT TO GROUND CIRCUIT

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

  • Inspect for continuity as followings:

    • ABS wheel-speed sensor (LR) terminal A (wiring harness-side)—body ground

    • ABS wheel-speed sensor (LR) 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 (LR) terminal A—DSC HU/CM terminal R

  • ABS wheel-speed sensor (LR) terminal B—DSC HU/CM terminal P

    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 (LR) CIRCUIT FOR OPEN CIRCUIT

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

  • Disconnect the DSC HU/CM connector.

  • Inspect for continuity as followings:

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

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

  • 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 (LR) terminal A—DSC HU/CM terminal R

  • ABS wheel-speed sensor (LR) terminal B—DSC HU/CM terminal P

    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 (LR)

  • Visually inspect the ABS sensor rotor for foreign material adhering or improper installation.

  • Is the ABS sensor rotor (LR) normal?

Yes

Go to the next step.

No

Replace the ABS sensor rotor (LR), then go to Step7.

(See WHEEL HUB COMPONENT REMOVAL/INSTALLATION.)

6

INSPECT CLEARANCE BETWEEN ABS SENSOR ROTOR (LR) AND ABS WHEEL-SPEED SENSOR (LR)

Yes

Go to the next step.

No

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

7

VERIFY DTC TROUBLESHOOTING COMPLETED

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.

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