Patent ID: 8267836

Claim:
A control system for an automatic transmission in which a downshift is made by disengaging a disengaging-side engaging element and engaging an engaging-side engaging element, the control system comprising: an engine control section configured to control an engine speed of an engine connected to the automatic transmission; a downshift control section configured to provide a first engaging capacity to the disengaging-side engaging element and put the engaging-side engaging element in a disengaging state, to control the engine control section to maintain the engine speed at a level according to a gear of the automatic transmission to be obtained after the downshift, and to increase an engaging capacity of the engaging-side engaging element to engage the engaging-side engaging element and decrease the first engaging capacity of the disengaging-side engaging element to disengage the disengaging-side engaging element when a parameter representing a progressing condition of the downshift reaches a value, thereby carrying out the downshift in a power-on condition; and a detecting section configured to detect an operating amount of an accelerator pedal, wherein, when a power-off condition is detected upon the accelerator pedal being returned to a position representing an operating amount during the downshift, the downshift control section is configured to decrease the first engaging capacity of the disengaging-side engaging element to a second engaging capacity smaller than the first engaging capacity of the disengaging-side engaging element to continue the downshift which is currently progressing and to cause the engine control section to continue controlling the engine speed.