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. 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 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

(3) Deformation or damage of the ABS sensor rotor

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 and steering knuckle as a single unit. (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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Tightening torque

8—10 N·m {82—101 kgf·cm, 71—88 in·lbf}

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 matter adhering?

Clearance

0.88—1.52 mm {0.035—0.059 in}

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.)