| 摘要 |
PURPOSE:To reset an oil pressure control device to normal by updating a map according to the corresponding relation between the control signal value to solenoid valve and the actual line pressure when line pressure corresponding to vehicle operating conditions cannot be obtained. CONSTITUTION:When degradation, deformation, and the like are generated to a solenoid valve 7 operated according to a duty ratio (control signal) applied from a control unit 8, or each member of a line pressure forming part L, line pressure corresponding to operating conditions such as throttle opening and vehicle speed is not always formed depending on an initially set duty ratio map. At such a time, the duty ratio map is corrected using a duty ratio map correcting device 40 so as to obtain line pressure corresponding to the operating conditions. This duty ratio map correcting device 40 is provided with an oil pressure sensor 41 for detecting line pressure in a line pressure feed passage 2, and a control part 42. |
