Wheel Speed Sensor: Testing and Inspection

1. Raise and support vehicle, release parking brake.
2. Disconnect ABS ECU harness connector.

Fig 81 Wheel Speed Sensor Voltage Inspection:

Fig 82 Wheel Speed Sensor Voltage Inspection:

3. Rotate wheel 1 turn per second and measure voltage between terminals shown.
4. Voltmeter should indicate a voltage signal of 70 or more mV.
5. If voltage is lower than 70 mV, check wiring harness and speed sensor. Repair or replace as necessary.