Electronic Brakeforce Distribution (EBD)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
Is activated during normal braking (without ABS control) and divides the braking force on the rear wheels.
Normally there is a variation in the front and rear wheels slippage dependent on how hard braking is and how heavily the car is loaded. The Electronic Brakeforce Distribution (EBD) function ensures that the rear wheel speed is 0-2% higher than the front wheel speed. The function is, in principle, load sensing.
The function is controlled by the control module and controls only the valves to the rear wheels. The pump does not operate, the brake fluid is taken up by the receivers.