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Front Wheel Speed Sensor: Inspection

  1. Measure the output voltage between the terminal of the wheel speed sensor and the body ground.
    CAUTION: In order to protect the wheel speed sensor, when measuring output voltage, a 100Ω resistor must be used. See Fig 1.
    Fig 1: Measuring Wheel Speed Sensor Output Voltage
    G05117575Courtesy of KIA MOTORS AMERICA, INC.
  2. Compare the change of the output voltage of the wheel speed sensor to the normal: change of the output voltage. See Fig 2.
    Fig 2: Wheel Speed Sensor Output Voltage Graph
    G04883911Courtesy of KIA MOTORS AMERICA, INC.