Wheel Speed Sensor: Testing and Inspection

Anti-Lock Braking System Wheel Speed Sensor

Inspection






1. Measure the output voltage between the terminal of the wheel speed sensor and the body ground.

Caution: Must use the resistance (100 Ohms), as shown below, in order to protect the active wheel speed sensor, before measuring the output voltage.






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: 590 mVolts - 840 mVolts
V: 1.18 Volts - 1.68 Volts
Frequency range: 1 - 2,000 Hz