Patent attributes
A method for controlling an automated step-by-step variable transmission which has a plurality of gear stages which set up a different transmission ratio in each case. The method comprises the steps: a) detecting whether a gear stage is to be engaged, b) detecting an input actual variable which is substantially proportional to an input rotational speed of the step-by-step variable transmission, and an output actual variable which is substantially proportional to an output rotational speed of the transmission, c) checking as to whether a difference between a ratio of the input and the output actual variables and the transmission ratio which would be set up by the gear stage is smaller for a predefined timespan than a predefined tolerance range, and d) determining a fault state if the difference does not lie within the tolerance range for the predefined timespan.
