| 摘要 |
A control apparatus for an automatic transmission having a rotation transmission mechanism for transmitting rotation of a prime mover mounted on a vehicle to a speed change mechanism, and an input clutch for controlling connection/disconnection of the transmitted rotation. The control apparatus includes a control portion that performs a neutral control including a release control that reduces rotation transmission efficiency, and an in-neutral control so as to maintain rotation efficiency. During the in-neutral control, a check control is performed that makes the fluid pressure relative to the input clutch fluctuate, and when determining as a result of the check control that the rotation transmission efficiency is in a predetermined low efficiency state, then reducing the fluid pressure relative to the input clutch by a set pressure, and thereafter maintaining the fluid pressure constant.
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