Motor vehicle drive unit controlling method, involves diagnosing state of force transmission unit according to output variable of engine, and detecting closed state of unit if real value of output variable is greater than maximum value

摘要

The method involves diagnosing a state of a force transmission unit (5) according to an output variable of an engine (10). A closed state of the force transmission unit is detected if a real value of the output variable of the engine is greater than a maximum value of the output variable, and if the value of output variable is less than a preset threshold. An independent claim is also included for a control device of a drive unit.