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DTC C1A95:64 [DSC HU/CM]

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2016 – MX-5 – Brakes

DTC C1A95:64 [DSC HU/CM]

DTC

C1A95:64

ABS wheel-speed sensor

DETECTION CONDITION

  • ABS wheel-speed sensor or sensor rotor malfunction is detected.

FAIL-SAFE FUNCTION

POSSIBLE CAUSE

  • Tires of different diameters between front and rear wheels are installed

  • ABS sensor rotor malfunction (missing sensor rotor teeth)

  • Excessive clearance between ABS wheel-speed sensor and sensor rotor

  • DSC HU/CM malfunction

SYSTEM WIRING DIAGRAM

Diagnostic Procedure

Step

Inspection

Action

1

INSPECT ABS WHEEL-SPEED SENSOR DATA MONITOR

  • Using the M-MDS, perform the PID inspection for ABS wheel-speed sensors.

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

  • Are the monitoring values of all the wheels nearly the same when vehicle is driven?

Yes

Go to Step5.

No

Go to the next step.

2

INSPECT TIRE AND TIRE PRESSURE

Yes

Go to the next step.

No

Replace with a specified tire or adjust the air pressure, then go to Step5.

3

VISUALLY INSPECT ABS SENSOR ROTOR

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

  • Are the ABS sensor rotors normal?

Yes

Go to the next step.

No

Replace the malfunction part, then go to Step5.

4

INSPECT CLEARANCE BETWEEN ABS SENSOR ROTOR AND ABS WHEEL-SPEED SENSOR

Yes

Go to the next step.

No

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

5

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.

6

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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