Where is the temp sensor located on a 1993 T100 automatic trans that lets the trans lock up into overdrive?

On a 1993 Toyota T100 with an automatic transmission, the temperature sensor that helps control the overdrive lockup is typically located on the transmission itself. It is usually found near the valve body or on the side of the transmission case. This sensor monitors the Transmission Fluid temperature, allowing the transmission control unit to engage overdrive when the fluid reaches the appropriate temperature. If you're troubleshooting, it's advisable to consult the vehicle’s service manual for the exact location and specifications.