Anti-Lock Brake System (Abs) Br-2O - Toyota LAND CRUISER Service Manual Supplement

BR-20
BRAKE SYSTEM (STATION WAGON) - ANTI-LOCK BRAKE SYSTEM (ABS)
ANTI-LOCK BRAKE SYSTEM (ABS)
DESCRIPTION
• The ABS is a brake system which controls the brake cylinder hydraulic pressure of all four wheels during
sudden braking and braking on slippery road surfaces, preventing the wheels from locking. This ABS pro-
vides the following benefits:
(1) Enables steering round an obstacle with a greater degree of certainty even when panic braking.
(2) Enables stopping in a panic brake while keeping the 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 condi-
tions. However, the system cannot prevent the vehicle from skidding if the cornering speed limit is ex-
ceeded.
• The ABS has a longitudinal deceleration sensor to match braking characteristics to the full-time four
wheel drive.
• In case a malfunction occurs, a diagnosis function and fail-safe system have been adopted for the ABS to
increase serviceability.
• When the center differential is locked, the ABS does not operate, so the ABS warning light lights up to in-
dicate this.