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 ABS wheel-speed sensor internal circuit. Be sure to use the M-MDS to inspect the ABS wheel-speed sensor.

1.  Turn the ignition switch off.

2.  Connect the M-MDS to the DLC-2.

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

•  LF_WSPD

(LF wheel-speed sensor)

•  RF_WSPD

(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.

Installation Visual Inspection

1.  Inspect for the following:

•  If there is any malfunction, replace the part.

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

(2)  Deformation of the ABS wheel-speed sensor

Clearance Inspection

Preparation prior to inspection

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

2.  Remove the wheel hub, steering knuckle component. (See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION.)

3.  Install the ABS wheel-speed sensor to the removed wheel hub, steering knuckle component, and tighten to the specified torque.

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Clearance Inspection

1.  Measure the gap between the ABS sensor rotor and ABS wheel-speed sensor using a feeler gauge.

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•  If not within the specification, verify the following items and repair or replace if necessary.

―  Is there deformation or damage to the ABS sensor rotor?

―  Is there deformation or damage to the ABS wheel speed sensor?

―  Is there foreign material adhering?

Servicing after inspection

1.  Remove the ABS wheel-speed sensor from the wheel hub, steering knuckle component.

2.  Install the wheel hub, steering knuckle component. (See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION.)

3.  Install the ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR REMOVAL/INSTALLATION.)

4.  Inspect the front wheel alignment. (See FRONT WHEEL ALIGNMENT.)