Martin produced 23 No. 1 hits in the United States. ( 1 CNN)Sir George Martin, the music producer whose collaboration with the Beatles helped redraw the boundaries of popular music, died Tuesday, according to his management company. He was 90.
How ABS works. When the driver hits the brakes this pressurises a hydraulic system which causes the brake pads to squeeze against the discs which causes the car to slow down.
The computer then directs a hydraulic valve to release some brake fluid pressure to the wheel to let it rotate again. This process repeats many times per second until the vehicle stops or you lift your foot off the brake pedal. The ABS computer does a power-on self test every time you cycle the ignition. If it finds it's lacking data, or a hydraulic pump or valve isn't responding, it illuminates the ABS warning light on the dash. ABS relies on a properly operating conventional brake system.