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ANTILOCK BRAKE SYSTEM 04–13–7 04–13 ABS CONTROL OUTLINE E5U041343750N05 • ABS control occurs when wheel slip is determined by the ABS CM (based on the four ABS wheel-speed sensors). Then, the ABS HU inlet and outlet solenoid valves are operated and brake fluid pressure is controlled • Use of ABS control during emergency braking or on slippery road surfaces allows directional stability to be maintained, steerability ensured and stopping distance to be reduced. • The ABS control system has independent front wheel control and unified control (select low) for the rear wheels. Note • Select low control: A control system in which the left and right vehicle wheel speeds are compared and brake fluid pressure is controlled according to the wheel most likely to lock-up. Block Diagram End Of Sie CPU HU ABS WHEEL-SPEED CALIPER PISTON (LF) CALIPER PISTON (LR) CALIPER PISTON (RF) CALIPER PISTON (RR) CM SOLENOID PUMP ABS HU/CM ABS WHEEL-SPEED ABS WHEEL-SPEED ABS WHEEL-SPEED C3U0413S009 |