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Delco Electronics had been supplying all GM automobiles sold in the US with Engine Control Modules (ECMs) since 1981 when the US Clean Air Act required 3-way catalytic converters and controlled air-fuel ratios. The production ECMs were becoming more complex, and were becoming powertrain controllers controlling the transmission, spark timing ...
An engine control unit (ECU), also called an engine control module (ECM), [1] is a device that controls various subsystems of an internal combustion engine. Systems commonly controlled by an ECU include the fuel injection and ignition systems.
PCM: Power-train control module (Ford, GM, JLR) ECM: Engine control module; Injection control unit (Peugeot, [2] Citroën, Fiat, Alfa, Lancia) DME/DDE: Digital Motor Electronics / Digital Diesel Electronics (BMW, [3] Mini) ECU: Electronic control unit / Engine control unit
General Motors (GM) is an American car manufacturing company. It manufactures its own automobile transmissions and only purchases from suppliers in individual cases. They may be used in passenger cars and SUVs, or light commercial vehicles such as vans and light trucks.
An ECU from a Geo Storm. 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.
GM's ALDL (Assembly Line Diagnostic Link) is sometimes referred to as a predecessor to, or a manufacturer's proprietary version of, an OBD-I diagnostic starting in 1981. This interface was made in different varieties and changed with power train control modules (aka PCM, ECM, ECU). Different versions had slight differences in pin-outs and baud ...
The ECM is a type of electronic control unit (ECU), which is an embedded system that employs software to determine the required throttle position by calculations from data measured by other sensors, including the accelerator pedal position sensors, engine speed sensor, vehicle speed sensor, and cruise control switches.
GM's Active Fuel Management [2] technology used a solenoid to deactivate the lifters on selected cylinders of a pushrod V-layout engine. GM used the Active Fuel Management technology on a range of engines including with the GM Small Block Gen IV engine family, first-generation GM EcoTec3 engine family, second-generation GM High-Feature V6 DOHC ...