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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 100 Ω resister must be used as shown.
    Fig 1: Measuring Output Voltage Between Terminal Of Wheel Speed Sensor And Body Ground
    G04863292Courtesy 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 as shown below.
    Fig 2: Output Voltage And Frequency Graph
    G04805958Courtesy of KIA MOTORS AMERICA, INC.

    V_low : 0.59 V ~ 0.84 V

    V_high : 1.18 V ~ 1.68 V

    Frequency range : 1 ~ 2,500 Hz

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