Abstract: Method for calibrating an electronic expansion valve within a thermal management device of a motor vehicle, the opening of the expansion valve being drivable by an electric stepper motor, the expansion valve including a first stop referred to as lower in the direction of maximum closure of the expansion valve and a second stop referred to as upper in the direction of maximum opening of the expansion valve, each stop being a reference position for calibrating the expansion valve, the method having: determining a projected open position of the expansion valve, determining the number of steps between the projected open position of the expansion valve and the first and second stops, selecting, as reference position, the stop having the smallest number of steps in relation to the projected open position, calibrating the expansion valve by opening or closing the expansion valve to its selected reference position.

Abstract: A method for controlling a system for a motor vehicle is disclosed. The system includes an actuator, a volatile memory (RAM) in which an item of position information of the actuator (IPRAM) is stored, and a long-term memory (EPROM). The following are stored in the long-term memory (EPROM): at least one item of position information (IPROM) of the actuator and an item of information relating to the powering down of the actuator (IHT), which assumes a first value (v1) when the system has been powered down in a controlled manner and assuming assumes a second value (v2) when the system has suffered a fault causing the current value of the position of the actuator stored in the volatile memory (RAM) to be deleted.

Abstract: The invention concerns a method for controlling a system (1) for a motor vehicle, said system comprising at least: —an actuator, —a volatile memory (RAM) in which at least one item of position information of the actuator (IPRAM) is stored, —a long-term memory (EPROM) in which the following are stored: o at least one item of position information (IPROM) of the actuator, o an item of information relating to the powering down of the actuator (IHT), this item of information assuming a first value (v1) when the system has been powered down in a controlled manner and assuming a second value (v2) when the system has suffered a fault causing the current value of the position of the actuator stored in the volatile memory (RAM) to be deleted, in particular when the system has stopped being powered electrically as the result of an error, or communication between the system and a computer has been cut off as the result of an error.