Chart 7: Circuit Related To The Overdrive-Cancel Function
This is a function that cancels the overdrive function for a certain fixed period of time, if during constant-speed travel in overdrive, the actual vehicle speed retained in the memory, and then after a short time causes the vehicle speed to return to the vehicle speed retained in the memory. Overdrive is canceled under the following conditions:
- If the RESUME switch is used.
- If, during constant speed travel, the actual vehicle speed decreases to 1.86 MPH.
Under any of the conditions described above, the overdrive ON signals output from the microcomputer (within the cruise control unit) are no longer output, and transistor Tr1 is switched OFF. As a result, transistor Tr2 is also switched OFF, causing the current passing through the OD-OFF switch of the selector handle to be interrupted at the transistor Tr2, with the result that the drive is controlled at 3rd gear. See Fig 1 . See WIRING DIAGRAMS for circuit locations.