I could go into a long winded plan to do what you are looking for. But,,,,,, you will be chasing your tail. Lots of hunting and reading schematics for proper voltages and wires. And then if you do get it to work, I suspect you will just get a "different" error code something like "ATF not at proper temp" since the ECU is not looking for this information yet the TCM is trying to send it, resulting in an error code, just like the no input error issue. I suspect the error codes pass from the TCM to ECU but not some of the actual sensor signals inputs/outputs. Not much you can do except block/pop the bulb and hope you don't have a REAL transmission temperature problem. I think if it were me, I 'd be looking for a proper ECU..............