| 摘要 |
<p>A main control section 92 determines a shift speed that cannot be established, and sets a shift speed that can be established to output a solenoid command signal to a drive circuit (an SLT circuit 98a, an SL1 circuit 98b, an SL2 circuit 98c, an SL3 circuit 98d, an SL5 circuit 98e, an S1 circuit 98f, an S2 circuit 98g) corresponding to a solenoid valve SLT, SL1 to SL5, S1, S2 corresponding to the set shift speed. A monitoring section 94 determines an abnormality in the main control section 92, and blocks transfer of the solenoid command signal from the main control section 92 to the drive circuit and outputs an on signal to the S2 circuit 98g for a second on/off solenoid valve S2 to establish a neutral state when it is determined that an abnormality is occurring in the main control section 92. Thus, any abnormality in an automatic transmission or a control device for the automatic transmission can be appropriately handled using the main control section 92 and the monitoring section 94.</p> |
