DTC C1A95:64 [DSC HU/CM]

id040262848100

DTC

C1A95:64

ABS wheel-speed sensor

DETECTION CONDITION

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

FAIL-SAFE FUNCTION

•  Refer to “Fail-safe function table”. (See DTC TABLE [DSC HU/CM].)

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

•  Inspect tire size and tire pressure.
(See WHEEL AND TIRE SPECIFICATION.)

•  Is the tire of the specified size and air 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

•  Measure the clearance between ABS sensor rotors and ABS wheel-speed sensors.
(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

(See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

•  Are the clearances normal?

Yes

Go to the next step.

No

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

5

VERIFY DTC TROUBLESHOOTING COMPLETED

•  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 Pending 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 the applicable DTC inspection.

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

No

DTC troubleshooting completed.

DTC	C1A95:64	ABS wheel-speed sensor
DETECTION CONDITION		• ABS wheel-speed sensor or sensor rotor malfunction is detected.
FAIL-SAFE FUNCTION		• Refer to “Fail-safe function table”. (See DTC TABLE [DSC HU/CM].)
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		—

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.
1		No	Go to the next step.
2	INSPECT TIRE AND TIRE PRESSURE • Inspect tire size and tire pressure. (See WHEEL AND TIRE SPECIFICATION.) • Is the tire of the specified size and air pressure?	Yes	Go to the next step.
2		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.
3		No	Replace the malfunction part, then go to Step5.
4	INSPECT CLEARANCE BETWEEN ABS SENSOR ROTOR AND ABS WHEEL-SPEED SENSOR • Measure the clearance between ABS sensor rotors and ABS wheel-speed sensors. (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.) (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.) • Are the clearances normal?	Yes	Go to the next step.
4		No	Replace the malfunction part, then go to the next step.
5	VERIFY DTC TROUBLESHOOTING COMPLETED • 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 Pending 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 the applicable DTC inspection. (See DTC TABLE [DSC HU/CM].)
6	VERIFY NO DTC IS PRESENT • Are any DTCs present?	No	DTC troubleshooting completed.