Why are wheel bearing hubs equipped with wheel speed sensors?
Why are wheel bearing hubs equipped with wheel speed sensors?
When engineers came up with the idea of putting the wheel speed sensor (WSS) and tone ring inside a sealed wheel bearing hub assembly, it seemed like a great idea. The sealed environment would help protect the sensor and make it less vulnerable to damage or contamination from the outside.
What causes a wheel bearing hub to go bad?
But nothing is perfect, and when moisture seeps into the hub, it corrodes the tone ring. The result is an uneven WSS signal that confuses the ABS system. The first signs of trouble may be the ABS system kicking in when braking at low speed and/or the ABS warning light coming on.
What to do if ABS wheel speed sensor goes out?
If the ABS wheel speed sensor was faulty, once the new hub/sensor is installed, and you drive the vehicle, the warning lights should go out. To determine what is going on, you can manually erase the trouble codes using an appropriate scan tool and if the warning lights stay off, then the problem is resolved.
When does a wheel speed sensor need to be replaced?
Since the wheel speed sensor also monitors the anti-lock braking system on your car, it’s common for the ABS Light to illuminate when the sensor is worn out, disconnected, or has been struck by debris, which means you’ll have to replace the wheel speed sensor.
When engineers came up with the idea of putting the wheel speed sensor (WSS) and tone ring inside a sealed wheel bearing hub assembly, it seemed like a great idea. The sealed environment would help protect the sensor and make it less vulnerable to damage or contamination from the outside.
When do you need to replace a wheel bearing hub?
But, if the tone ring is corroded or damaged, it must be replaced. In the case of sealed hub assemblies with the WSS and tone ring inside, the hub provides protection against external corrosion — or at least that’s the goal. But nothing is perfect, and when moisture seeps into the hub, it corrodes the tone ring.
Where is the wheel speed sensor tone ring?
The wheel speed sensor tone ring is built into the wheel bearing assembly, unlike other wheel speed sensor setups where the tone ring is on the outside of the outer CV joint housing, axle or hub. On later applications, the WSS tone ring is exposed and very vulnerable to corrosion from road salt and road splash.
When do wheel speed sensors need to be replaced?
A resistance reading that is now within range tells you the problem is in the wiring, not the sensor. If the sensor itself out of range, high or low, the sensor is defective and the sensor or hub assembly (if the sensor is not removable) needs to be replaced.
How to remove ABS sensor from Chevy Colorado?
Important: DO NOT lever or pry against the wheel speed sensor tone wheel under the wheel speed sensor. Lever against the wheel hub ONLY. 2. Using a suitable tool, pry or lever the wheel speed sensor off of the wheel hub/bearing housing. Yes you can pry it off just don’t pry against the tone wheel directly under the sensor.
But nothing is perfect, and when moisture seeps into the hub, it corrodes the tone ring. The result is an uneven WSS signal that confuses the ABS system. The first signs of trouble may be the ABS system kicking in when braking at low speed and/or the ABS warning light coming on.
When to replace a bad wheel speed sensor?
1. ABS Light is illuminated on the dashboard Since the wheel speed sensor also monitors the anti-lock braking system on your car, it’s common for the ABS Light to illuminate when the sensor is worn out, disconnected, or has been struck by debris, which means you’ll have to replace the wheel speed sensor.
