| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an on-vehicle machine mainly used for locking/unlocking and opening/closing of a door of an automobile, capable of certainly performing determination of a portion where abnormality occurs and easily performing maintenance. <P>SOLUTION: A transmission antenna 45 is connected to a control means 43 of the on-vehicle machine 50, and an inspection signal A1 produced in the control means 43 is transmitted through the transmission antenna 45. A return signal C1 becoming a harmonic wave of the inspection signal A1 is returned to the control means 43 through a receiving circuit 42, and abnormality of the receiving circuit 42 is determined by the control means 43 based on the return signal C1. Therefore, the on-vehicle machine in which determination of the portion where abnormality occurs is certainly performed and maintenance is easily performed can be obtained. <P>COPYRIGHT: (C)2011,JPO&INPIT |
