Q:

What is a transmission control module?

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Quick Answer

A transmission control module is a mechanism that regulates a vehicle's automatic transmission by processing electrical signals. Sensors electronically send information to the transmission control module, and this information is used to calculate gear shifting. The transmission control module helps the vehicle's transmission work efficiently and dependably.

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What is a transmission control module?
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Full Answer

A transmission control module makes adjustments based on the data it collects from the different signals it receives. Some of the sensors that communicate with the transmission control module are the brake pedal position sensor, the transmission fluid temperature sensor, the turbine speed sensor and the throttle position sensor.

The information that the transmission control module gathers from all of the sensors is important in making determinations regarding smooth gear shifting. Processing this information and sending out the correct signals contributes to better fuel efficiency and better vehicle handling, as well as decreased engine emissions. For instance, the transmission fluid temperature sensor sends signals indicating if the transmission fluid is at the proper temperature. Based on these signals, the transmission can downshift if necessary. The brake pedal position sensor relays information that tells the transmission control module if the driver has applied the brakes. The throttle position sensor helps manipulate the timing of shifting.

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