Electronic Brake Distribution (EBD)

WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The ABS incorporates a strategy called Electronic Brake Distribution (EBD). The EBD strategy uses the Hydraulic Control Unit (HCU) as an electronic proportioning valve. On initial application of the brake pedal, full pressure is applied to the rear brakes. The ABS module uses wheel speed input to calculate an estimated rate of deceleration. Once vehicle deceleration exceeds a certain threshold, the ABS module closes the appropriate isolation valves in the HCU to hold the rear brake pressure constant while allowing the front brake pressure to build. This creates a balanced braking condition between the front and rear wheels and minimizes the chance of rear wheel lockup during hard braking. As the vehicle decelerates, the valves are opened to increase the rear brake pressure in proportion to the front brake pressure.

Some drivers may feel a slight bump sensation in the brake pedal when EBD is active.

If anti-lock braking is disabled due to DTCs being present in the ABS module, EBD will continue to function unless the ABS module detects 2 wheel speed sensor faults on a single cycle or an internal HCU fault exists. When EBD is disabled, the ABS warning indicator, the red brake warning indicator and (if equipped) the stability assist warning indicator will illuminate.