| 摘要 |
When a vehicle condition is in a region where limitation of the differential action of a differential portion should be stopped, for example in a CVT control region or a motor-driven region, a cutoff device prohibits the limitation of the differential action. Therefore, if the differential action may be limited due to a failure when the vehicle condition is in the region where the limitation of the differential action should be stopped, the fail-safe function is performed to prohibit the limitation of the differential action. This avoids the situation where fuel efficiency is decreased, driveability is deteriorated, and a shock is caused by limiting the differential action.
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