Brake System: Inspection

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 75Ω resistor must be used as shown.

Fig 1: Measuring Output Voltage Between Terminal Of Wheel Speed Sensor And Body Ground
Courtesy of KIA MOTORS AMERICA, INC.
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 Graph
Courtesy of KIA MOTORS AMERICA, INC.