RIDEX 412W0086 ABS sensor

Description

In Chevrolet vehicles equipped with Anti-lock Braking Systems (ABS), the ABS sensor is a crucial component responsible for monitoring wheel speed and feeding this information to the ABS control module. This information is essential for the ABS system to function properly and prevent wheel lockup during hard braking situations.

Here’s a closer look at the Chevrolet ABS sensor:

Function:

• Each wheel of a Chevrolet with ABS has an individual ABS sensor typically located near the wheel hub or attached to the suspension components.
• The sensor uses magnetic or Hall effect technology to detect the rotational speed of the wheel.
• As the wheel rotates, a reluctor ring (a toothed or slotted ring) attached to the axle or wheel bearing passes near the sensor.
• The sensor detects the changes in the magnetic field caused by the teeth or slots of the reluctor ring as it rotates. This information is then converted into an electrical signal.

Communication:

• The electrical signal from the ABS sensor is sent to the ABS control module.
• The control module continuously monitors the wheel speed signals from all four sensors.

ABS Activation:

• During hard braking, if the control module detects that a wheel’s speed is decreasing rapidly (indicating potential lockup), it activates the ABS system.
• The control module sends signals to the ABS pump and hydraulic modulator.
• The ABS pump rapidly modulates the hydraulic pressure to the affected wheel, preventing it from locking completely.
• This allows the wheel to maintain some level of traction, enabling the driver to retain steering control and avoid skidding.