Antilock Brakes / Traction Control Systems: Description and Operation

ANTI-LOCK BRAKE SYSTEM (ABS)

Description
• The ABS is a brake system which controls the wheel cylinder hydraulic pressure of all four wheels during sudden braking and braking on slippery road surfaces, preventing the wheels from locking. This ABS provides the following benefits:
(1) Enables steering round an obstacle with a greater degree of certainly even when panic braking.
(2) Enables stopping in a panic brake while keeping effect upon stability and steerability to a minimum, even on curves.
• The function of the ABS is to help maintain directional stability and vehicle steerability on most road conditions. However,the system cannot prevent the vehicle from skidding if the cornering speed limit is exceeded.
• The ABS has a longitudinal deceleration sensor to match braking characteristics to the full-time four-wheel drive.(For 4WD)
• In case a malfunction occurs, a diagnosis function and fail-safe system have been adopted for the ABS to increase serviceability.