Patent ID: 8666615

Claim:
A method of controlling a transmission of a vehicle, comprising: an end position memorizing operation of memorizing positions of opposite ends of a shift-direction actuator with respect to a shift direction in which the shift-direction actuator shifts gears; a stroke calculation operation of calculating a total shift-direction stroke using the positions of the opposite ends of the shift-direction actuator with respect to the shift direction that are obtained by the end position memorizing operation; a validity determining operation of comparing the total stroke calculated in the stroke calculation operation with a reference stroke and determining validity of the total stroke; a center determining operation of comparing a medial position of the total stroke with a current shift-direction reference center point of the shift-direction actuator when the total stroke has been determined to be valid in the validity determining operation, and determining whether the medial position is within a predetermined critical range; and a center compensating operation of resetting the shift-direction reference center point for the shift-direction actuator when the medial position has been determined to be not within the critical range in the center determining operation, thereby maintaining the shift-direction reference center point of the shift-direction actuator at a correct position.