Component Testing
WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the appropriate wheel speed sensor.
- Test for 850-1350 Ω between the signal terminal A and the low reference terminal B. During the test, check for an intermittent circuit condition by gentle moving the wheel speed sensor pigtail harness.
- If not within the specified range, replace the wheel speed sensor.
- Test for infinite resistance between each terminal and the steering knuckle. Reverse the test leads, test for infinite resistance between each terminal and the steering knuckle again.
- If less than the specified value, replace the appropriate wheel speed sensor.
- Spin the wheel while monitoring the voltage between the signal terminal A and the low reference terminal B. The voltage should be greater than 100 mV AC.
- If less than the specified range, replace the wheel speed sensor.