| 摘要 |
A steer-by-wire steering apparatus for a vehicle has a first control system including a first ECU, and a second control system including a second ECU. Each ECU responds to manipulation of the steering wheel by a driver, and controls a steering motor. The first ECU determines whether the second control system is malfunctioning, and the second ECU determines whether the first system is malfunctioning. When any of the system is malfunctioning, the ECU of normally functioning system controls a counter force motor such that steering wheel receives a counter force that is different from that when both systems are functioning normally. Accordingly, the steering apparatus is capable of speedily and reliably causing a driver to realize a malfunction in the steering apparatus.
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