| 摘要 |
A shifting device for an automatic transmission of a vehicle has a manual shift mode which permits a driver to manually change a speed ratio by displacing a shift lever in an upshift direction (+) or a downshift direction (-) in a manual operation lane from its neutral position. The shifting device is provided with a switch (10) for detecting that the shift lever has moved to the manual operation lane, a switch (12) for detecting that the shift lever has moved in the upshift direction from its neutral position, and a switch (14) for detecting that the shift lever has moved in the downshift direction from its neutral position. All these three switches comprise a traveling contact (10a,12a,14a) and two contacts. The traveling contacts of the three switches are earthed, and the six contacts (10b,10c,12b,12c,14b,14c) of the three switches are respectively connected to six input terminals (16a-16f) of a control unit. Due to this, the control unit can determine a fault in any of the switches based on the signals input into the input terminals. <IMAGE> |
