OBDII scanner / software reasonable priced?

I DONT know that, but it is going to take diagnostics to find out, unless I "luck out." The thing is getting voltage but not a ground from the PCM

The "flow chart" mentions things like the speed sensor, but the 1-2-3 shift seems normal, and the speedo works. Seems like that is OK

They mention TPS, but it runs normal otherwise, that seems some unlikely. There are no errors indicated on the cluster.