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Sensing Diagnostic Module SDM

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Sensing Diagnostic Module SDM The SDM is a microprocessor and the controller for the entire airbag system, typically mounted under either the instrument panel or the front seat. The primary purpose of the SDM is to initiate the deployment of a particular airbag module. When airbag deployment is warranted during impact, the SDM will send current to the appropriate airbag module for deployment. The SDM serves several other functions in addition to the control of the airbag deployment: 1. Continuously monitors the operational status of the airbag electrical circuits 2. Controls the airbag warning lamp 3.  Maintains and operates an energy reserve  4.Stores diagnostic codes, and  5. Records impact events and other vehicle specific information SDM Handling Precautions The SDM is sensitive to Electrostatic Discharge (ESD), and the shipping box is labeled. When handling an ESD sensitive part, follow these guidelines to reduce the possible build-up of an electros...
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DISC BRAKE

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A  disc brake  is a type of  b rake   that uses calipers  to squeeze pairs of pads  against a disc or "rotor"  to create  f riction .  This action slows the rotation of a shaft, such as a vehicle axle , either to reduce its rotational speed or to hold it stationary. The energy of motion is converted into waste heat  which must be dispersed. Brake rotors of disc brakes rotate with the wheels, and brake pads, which are fitted to the brake calipers, clamp on these rotors to stop or decelerate the wheels. The brake pads pushing against the rotors generate friction, which transforms kinetic energy into thermal energy. This thermal energy generates heat, but since the main components are exposed to the atmosphere, this heat can be diffused efficiently. This heat-dissipating property reduces brake fade, which is the phenomenon where braking performance is influenced by the heat. Another advantage of disc brake is its resistance...
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