How do you test a speed sensor with a multimeter?

How do you test a speed sensor with a multimeter?

Read the voltage on the multimeter to see if it increases with speed. While the VSS rotates, the multimeter will display a voltage reading. If the VSS is functioning correctly, the voltage on the multimeter will increase as the speed of the VSS rotation increases.

How many ohms should a wheel speed sensor have?

The typical reading for a passive wheel speed sensor is between 1,000 and 2,500 ohms. This is a normal range for all passive sensors. The specification for active sensors is between 1,000 and 2,500 ohms.

How do you tell which ABS wheel sensor is bad?

The easiest way to tell which ABS sensor is bad is using a car diagnostic scan tool. Just plug in the device, choose the car model and select diagnose ABS and it will show fault codes describing which speed sensor failed.

Is a wheel speed sensor the same as a ABS sensor?

The ABS sensor is also called the wheel speed sensor or ABS brake sensor. Since all the wheels do not turn at the same speed, the ABS sensors report the speeds of all the four wheels to the ECM, based on which the ECM determines if the wheels are locking up.

How do you test the wheel speed sensor?

Test the sensor using the voltmeter, and now it should show you the readings when you spin the wheel. If you removed the brake pads and rotors to get the visibility of the speed sensor clear, put them back too. This way, you need to put everything back in order or assemble the parts correctly.

When to test 2 or 3 wire speed sensors?

This is when you would want to test your 2 or 3 wire speed sensor, as faulty units can also cause these issues. Another reason to test your 2 or 3 wire speed sensor is of course, your speedometer is acting up or not working at all.

How do you replace a speed sensor on a car?

Follow the wire to where it’s connected on the wheel. Pull off the wire to unclip the connector using your fingers to expose the two pins on the speed sensor. Inspect for breakages on the pin in case one pin or both are broken. You will have to replace that specific speed sensor. They should be intact.

Why is my wheel speed sensor not working?

Any difference in the ohm or voltage readings on a wheel will indicate either a wire break, short or a defective sensor. Be certain to reconnect all the wheel speed sensor jacks when finished. Mount the wheels on the vehicle and use a tire iron to partially tighten all the lug nuts.