Electronic control system for automatic vehicle transmission.

摘要

An electronic control system for controlling an automatic transmission mounted on a vehicle determines a gear position for the transmission based on vehicle speed data immediately before a power supply for supplying electric power to the electronic control system is cut off, during a transient period after the electronic control system is reset by the power supply cutoff until the control system operates stably. Even when the electronic control system is reset by an instantaneous power supply cutoff while the vehicle is running, the electronic control system allows the vehicle to run safely without erroneous gear shifting immediately afterwards.