What is the primary function of the ABS control module during a panic stop?

The primary function of the ABS (Anti-lock Braking System) control module during a panic stop is to prevent wheel lockup by modulating brake pressure to each wheel individually. Wheel lockup occurs when one or more wheels stop rotating while the vehicle is still in motion. This loss of traction reduces steering control and increases stopping distance. The ABS control module monitors wheel speed sensors at each wheel to detect impending lockup. During a panic stop, where the driver applies maximum braking force, the ABS control module rapidly cycles the brake pressure to each wheel. It does this by quickly releasing and reapplying the brakes, preventing any single wheel from locking up. This allows the driver to maintain steering control and reduces the vehicle's stopping distance compared to a non-ABS braking system. The ABS control module uses hydraulic valves in the ABS modulator unit to control brake pressure, responding to data from the wheel speed sensors to optimize braking performance.