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Brake has an energy-absorbing mechanism that converts vehicle movement into heat to stop rotating wheels. Braking system is designed to reduce the speed and stop moving vehicle. The driver exerts a force on a brake pedal and the force on the brake pedal pressurizes brake fluid in a master cylinder. This hydraulic force is transferred through steel lines to a wheel cylinder at each wheel. Hydraulic pressure to each wheel cylinder is used to force friction materials against the brake drum. The ECM senses the state of brake operating through brake switch.