What are two ways to test a wheel speed sensor?
How to Test a Wheel Speed Sensor
- Park the vehicle and turn off the engine with the transmission in “Park” or neutral.
- Locate your vehicle’s main fuse block.
- Loosen the lugs on all four wheels with a tire iron — do not remove the lug nuts.
- Release the emergency brake and set the gearshift in neutral.
Can wheel speed sensors get dirty?
Wheel speed sensor If this sensor gets dirty, it can cause the ABS light to turn on, indicating a problem when none actually exists. In general, sensors that work with the engine impact the performance when they get dirty. The engine may sound rough, not run as well, or have less efficiency or power.
Can you clean a wheel speed sensor?
With the sensor free, take your rag and wipe the sensor until it’s clean. I prefer not to use any chemicals on the sensor to avoid potential problems. If, however, the sensor is really grungy, use a mild soapy solution and rinse well. The ABS sensors are precision instruments in a crude environment.
What should I do if my wheel speed sensor is not working?
When the wheel speed sensor is broken or not working as it should, one of the first things that are affected is the ABS system. If you press your brakes and you notice that the front tires lock up, you should immediately contact a local ASE certified mechanic to inspect this problem. This problem can be a safety concern and should not be put off.
What kind of speed sensor does a car use?
The wheel speed sensor, also known as the vehicle speed sensor (VSS), is a SENSOR used to measure the steering of the car wheels. Commonly used wheel speed sensors are: magnetoelectric wheel speed sensors and Hall effect wheel speed sensors. For modern vehicles, wheel speed information is essential.
How to test an automotive ABS wheel speed sensor?
This is an example of an ABS sensor wiring diagram. Be observant when first driving the vehicle after testing the ABS system. Listen for abnormal noises or performance issues that could indicate a problem which will need further inspection. If you have any questions about ABS testing visit our forum.
How big is an air gap on a wheel speed sensor?
Air gaps typically range from .016 in. to as much as .050 in. (0.40 to 1.3 mm) depending on the application. If the ABS warning light is on and you find a code for a wheel speed sensor (and the sensor is adjustable), the problem may be nothing more than too wide an air gap.