| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce costs. <P>SOLUTION: A connection detection system in an electric unit comprises a unit substrate, an electric transmission path connected to the unit substrate, and a terminal connector positioned at a terminal of the electric transmission path. The electric transmission path has plural ground lines, and at least one connector connecting part is provided on a path from the unit substrate to the terminal connector. A first ground line G1 and a second ground line G2 among the plural ground lines are electrically separated from each other in the unit substrate 10 to provide an electric potential to the first ground line G1. The second ground line G2 is given a ground electric potential. The first ground line G1 and the second ground line G2 are short-circuited in the terminal connector 40. A detection part 12 detecting the electric potential of the first ground line G1 is provided on the unit substrate 10. A normal connecting condition of the connector connecting part is detected by outputs of the detection part 12 indicating that the electric potential of the first ground line G1 reaches the ground electric potential. <P>COPYRIGHT: (C)2013,JPO&INPIT |
