| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic control device capable of detecting the abnormality of a selector valve without using a hydraulic sensor, for example.SOLUTION: In a hydraulic control device of an automatic transmission, an abnormal determination part causes a control part to control a second oil pump to operate during the operation of a first oil pump, and decides that the change-over valve is abnormal, in the case where the driving electric power of the second oil pump exceeds a first threshold value, while a change-over valve is switched to feed the working oil from the second oil pump to lubrication parts.SELECTED DRAWING: Figure 1 |
