#
FRONT/REAR ABS WHEEL-SPEED SENSOR INSPECTION

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## Visual Inspection

1. Remove the wheel and tire, and inspect the sensor for looseness and damage. Replace the sensor if necessary.

## Clearance Inspection

1. Inspect the clearance between the wheel-speed sensor and the sensor rotor.

Clearance

  0.3-1.1 mm {0.012-0.043 in}

## Resistance Inspection

1. Disconnect the ABS wheel-speed sensor connector.

2. Inspect the resistance at the ABS wheel-speed sensor.

  • If not as specified, replace the ABS wheel-speed sensor.

Resistance

  1.3-1.7 kilohm

## Voltage Inspection

1. On level ground, jack up the vehicle and support it evenly on safety stands.

2. Disconnect the ABS wheel-speed sensor connector.

3. Inspect each sensor by rotating each wheel one revolution per second.

  • If not as specified, replace the ABS wheel-speed sensor.

Voltage

  0.25-1.2 V (AC)

## Voltage Pattern Inspection

1. On level ground, jack up the vehicle and support it evenly on safety stands.

2. Disconnect the ABS wheel-speed sensor connector.

3. Using an oscilloscope, inspect the voltage pattern for distortion and noise by rotating each wheel.

  • If there is distortion or noise, inspect the ABS sensor rotor.