Wheel Speed Sensor: Testing and Inspection

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 Ohms resister must be used as shown.




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





V_low : 0.59 V ~ 0.84 V
V_high : 1.18 V ~ 1.68 V
Frequency range : 1 - 2,500 Hz