FRONT ABS WHEEL-SPEED SENSOR INSPECTION

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Sensor Output Value Inspection

Caution

•  Resistance inspection using other testers may cause damage to the front ABS wheel-speed sensor internal circuit. Be sure to use the M-MDS to inspect the front ABS wheel-speed sensor.

1.  Switch the ignition off.

2.  Connect the M-MDS to the DLC-2.

3.  Select the following PIDs using the M-MDS:

•  WSPD_SEN_LF (LF wheel-speed sensor)

•  WSPD_SEN_RF (RF wheel-speed sensor)

4.  Start the engine and drive the vehicle.

5.  Verify that the display of the M-MDS shows the same value as the speedometer.

•  If there is any malfunction, replace the front ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)

Installation Visual Inspection

1.  Inspect for the following:

•  If there is any malfunction, repair or replace the part.

(1)  Excessive play of the front ABS wheel-speed sensor

(2)  Deformation of the front ABS wheel-speed sensor

(3)  Deformation or damage of the ABS sensor rotor

(4)  Adhering foreign matter

Clearance Inspection

1.  Remove the front ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)

2.  Measure the distance between the front ABS wheel-speed sensor installation surface and the ABS sensor rotor. This is dimension A.

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3.  Calculate the clearance between the front ABS wheel-speed sensor and the ABS sensor rotor using the following formula:

Clearance (mm {in}) = A-14 {0.55}

4.  Verify that the clearance between the front ABS wheel-speed sensor and ABS sensor rotor is as indicated below.

•  If not within the specification, replace the front ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)