METHOD OF CONTROLLING A TRANSMISSION PARK SYSTEM OF A VEHICLE EQUIPPED WITH AN ELECTRONIC TRANSMISSION RANGE SELECT SYSTEM

摘要

A method of controlling a transmission of a vehicle equipped with an electronic transmission range select system includes receiving an electronic request to actuate a transmission park system. A speed of the vehicle is sensed with each of a plurality of different speed sensors to define a plurality of different sensed vehicle speeds. Each of the plurality of different speed sensors provides a sensed vehicle speed that is independent and separate from the sensed vehicle speed from all of the other speed sensors. All of the different sensed vehicle speeds from the plurality of speed sensors is compared to each other to determine the lowest sensed vehicle speed. When the lowest sensed vehicle speed is equal to or less than a maximum allowable actuation speed, an electronic signal is sent from the transmission control unit to the transmission park system to actuate the transmission park system.

主权项

1. A method of controlling an electronically actuated transmission park system of a vehicle, the method comprising:
sensing a speed of the vehicle with each of a plurality of different speed sensors to define a plurality of different sensed vehicle speeds, wherein each of the plurality of different speed sensors provides a sensed vehicle speed that is independent and separate from the sensed vehicle speeds of all of the other speed sensors; comparing all of the different sensed vehicle speeds from the plurality of speed sensors to each other to determine the lowest sensed vehicle speed; and actuating the transmission park system when the lowest sensed vehicle speed is equal to or less than a maximum allowable actuation speed.