Repair procedures: 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 in Fig 1.
   Fig 1: Measuring Output Voltage Between Terminal Of Wheel Speed Sensor & Body Ground

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2. Compare the change of the output voltage of the wheel speed sensor to the normal change of the output voltage as shown in Fig 2.

Fig 2: Identifying Voltage Waveform

Courtesy of KIA MOTORS AMERICA, INC.

V_low: 0.59V ~ 0.84V

V_high: 1.18V ~ 1.68V

Frequency range: 1 ~ 2, 500Hz