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A transmission control unit (TCU), also known as a transmission control module (TCM), or a gearbox control unit (GCU), is a type of automotive ECU that is used to control electronic automatic transmissions. Similar systems are used in conjunction with various semi-automatic transmissions, purely for clutch automation and actuation.
With the series of recall campaigns, Audi made several modifications; the first adjusted the distance between the brake and accelerator pedal on automatic-transmission models. Later repairs, of 250,000 cars dating back to 1978, added a device requiring the driver to press the brake pedal before shifting out of park. [ 39 ]
A power-train control module, abbreviated PCM, is an automotive component, a control unit, used on motor vehicles. It is generally a combined controller consisting of the engine control unit (ECU) and the transmission control unit (TCU). On some cars, such as many Chryslers, there are multiple computers: the PCM, the TCU, and the Body Control ...
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.
Honda was forced to invent their new system due to the vast array of patents on automatic transmission technology held by BorgWarner and others. Honda initially chose to integrate the transmission and engine block for its first application (in the N600) as in the Mini. The Hondamatic incorporated a lockup function, which Honda called a third ...
In an automatic transmission vehicle, the car is equipped with a tilt sensor that, when it reaches a certain angle or greater, tells the brake system to keep the brakes clamped for a few seconds longer after the driver releases the brake. This allows time for the driver to depress the accelerator, moving the vehicle forward.
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This system, commonly found on passenger cars from the late '80s through the mid-1990s, uses a speed sensor at each wheel, with one control valve each for the front and rear wheels as a pair. If the speed sensor detects lock up at any individual wheel, the control module pulses the valve for both wheels on that end of the car.