A steering system in a vehicle comprises an electrical servo motor for generating a supporting servo torque, wherein the motor shaft of the servo motor is coupled to a motion-transmitting component of the steering system. The magnetic tunnel junction structure includes a lower electrode, a lower magnetic layer pattern and a tunnel layer pattern, which are sequentially formed on the lower electrode. A determination is made as to whether the identified characters include a command for initiating an action across the communication network. This provides for a more efficient performance of the test procedure.