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Home >> Subaru >> 2012 >> Outback R >> Repair and Diagnosis >> Brakes >> Traction Control >> Vehicle Dynamics Control >> Front ABS Wheel Speed Sensor >> Inspection >> Check Abs Wheel Speed Sensor Unit
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Check Abs Wheel Speed Sensor Unit

  1. Visually check the tip of the ABS wheel speed sensor for foreign particles or damage. If necessary, clean the tip or replace the ABS wheel speed sensor.
  2. Disconnect the ABS wheel speed sensor connector.
  3. Check the ABS wheel speed sensor cable for discontinuity. If defective, replace the ABS wheel speed sensor.
  4. Connect a 12 V power supply to No. 1 terminal of ABS wheel speed sensor connector, then attach resistance to the No. 2 terminal. Rotate the wheel at about 2.75 km/h (2 MPH), and measure the voltage using an oscilloscope.

    Standard value of output voltage: 

    0.7 - 1.4 V 

    Fig 1: Checking ABS Wheel Speed Sensor Unit
    G07914208Courtesy of SUBARU OF AMERICA, INC.
  5. Replace the ABS wheel speed sensor if the inspection result is not within the standard value.
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