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In automotive electronics, body control module or 'body computer' is a generic term for an electronic control unit responsible for monitoring and controlling various electronic accessories in a vehicle's body. Typically in a car the BCM controls the power windows, power mirrors, air conditioning, immobilizer system, central locking, etc.
An electronic control unit (ECU), also known as an electronic control module (ECM), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle.
OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
DTC codes are read by a diagnostic tool, such as an OBD 2 scanner, which is plugged into the vehicle's diagnostic port. The tool communicates with the vehicle's onboard computer and retrieves the DTC codes. The codes are then interpreted by the mechanic or technician to determine the specific problem with the vehicle. [4]
HUD: Automotive head-up display; ICP: Intake cam phaser; IGN: Ignition; ImpAlt: Improved efficiency alternator; ISG: Integrated starter-generator system; ISG-SS: Integrated starter-generator system with start-stop operation; L4: In-line four-cylinder; LDT: Light-duty truck; LDT1: a light-duty truck with a loaded vehicle weight of up to 3750 pounds.
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Diagnostic Trouble Codes (DTCs) are displayed through the electronic climate control system's digital readout when in diagnostic mode. [3] 1981: General Motors introduced its "Computer Command Control" system on all US passenger vehicles for model year
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