Transmission solenoid

A transmission solenoid or cylinoid is an electro-hydraulic valve that controls fluid flow into and throughout an automatic transmission. Solenoids can be normally open or normally closed. They operate via a voltage or current supplied by the transmission computer or controller. Transmission solenoids are usually installed in a transmission valve body, transmission control unit, or transmission control module.[1]

Types

Manufacturers

References

  1. ↑ Hu, Ming-Sen (May 1, 2014). "The design and development of an automatic transmission solenoid tester for wheeled vehicles". SageJournals. Archived from the original on June 3, 2026.