CR-V 2007-2008

Anti-Lock Brake System


The Anti-Lock Brake System (ABS) controls the hydraulic brake pressure of all four wheels during sudden braking and braking on hazardous road surfaces, preventing the wheels from locking. The ABS provides the following benefits:

Enables steering around obstacles with a greater degree of certainty during panic braking
Enables stopping during panic braking while allowing stability and control, even on curves
If a malfunction occurs in the ABS, the system will operate as a normal brake (fail safe mode). A diagnostic function and a fail-safe system have been included for serviceability.

As part of the anti-lock brake system, this vehicle is equipped with Vehicle Stability Assistance (VSA). VSA is a computerized technology that improves the safety of a vehicle's handling by detecting and preventing skids. When VSA detects loss of steering control, VSA automatically applies individual brakes to help guide the vehicle. Braking is automatically applied to individual wheels, such as the outer front wheel to counter over steer, or the inner rear wheel to counter under steer. Some VSA systems also reduce engine power until control is regained.

VSA compares the driver's intended direction (by measuring steering angle) to the vehicle's actual direction by measuring lateral acceleration, vehicle rotation (yaw) and individual road wheel speeds. If the vehicle is not going where the driver is steering, VSA then brakes individual front or rear wheels and/or reduces excess engine power as needed to help correct under steer (plowing) or over steer (fishtailing).

VSA incorporates yaw rate control into the ABS. Yaw is rotation around the vertical axis-spinning left or right. Anti-lock brakes enable VSA to brake individual wheels. The VSA used on this vehicle also incorporates a Traction Control System (TCS), which senses drive-wheel slip under acceleration and individually brakes the slipping wheel or wheels and/or reduces excess engine power until control is regained.