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Not a problem mate & whilst I don't mind a beer, I don't expect anything. Have a beer for me

I followed the wiring from the shifter into the passenger footwell and there is continuity after the grey plug that goes into the main wiring harnesses. There is no continuity from the interior plug into the main wiring harness plug under the bonnet. I ran some speaker wire from the plug in the footwell into the plug under the bonnet and it upshifts. Obviously the break is somewhere under the dash or in the engine bay. I should have investigated this while the engine was out 2 weeks ago but I didn't. I'm just going to run another piece of wire for now, be farked digging into the wiring when there is so much stuff in the way. Thanks for the help Bill, pm me your address if you want some beer.

The wiring from the ZF6 connector goes to the C20 connector which is the large main engine wiring loom connector, passenger side of the engine. It's not uncommon to find broken wires here or near the ZF connector. Image is FG but the wiring location is the same. Wire colours may differ From the C20 connector, it goes to a connector in the passenger footwell. It's also not uncommon to find this section of wiring loom has rubbed through on the aluminium AC pipe near the passenger shock tower. If water has made it into these connectors, there'll be corrosion on the connector pins. It's rare to find any broken wires in the cab, but it's possible. The territory manual I have for SY doesn't have wiring diagrams for the ZF6, only BTR so is not useful. The FG manual shows the ute wiring loom goes directly from the passenger footwell to the shifter whereas the sedan shows an additional connector beside the passenger seat that may be accessible if the foot scuff plate is removed. I wouldn't go searching for this one unless there was an issue between the footwell & shifter. I've run out of time to get more images, but it gives you a starting point.

Thanks mate, I'll check it later when I get a chance.

Check continuity between tip+ at the shifter & pin 5 at the TCM connector. Tip- is pin4. Check the pin isn't pushed back in the ZF connector & the TCM pin isn't damaged. Wiring damage near the connector is possible too. Sorry for the poor quality wiring diagram. I had to zoom out further than I wanted before being able to snip the image.

Just realized there was a previous post about xspurt, can't believe i didn't see it. Thanks Bill for the below 🙂

I solved the issue by populating the table as attached. I can't very well explain why, but this is what it took to make it follow the commanded downshift speeds.

^^^Do this so you understand what is happening. It will also explain why you can't feel a difference, after you have a think about it.

I'm pretty sure I've figured this out. What I learned is that the downshift tables aren't treated the same in the logic in various drive modes. I was able to get the downshift speeds vs pedal position to do what I want but the values needed in the base table are drastically different from reality. I have to use much lower OSS values to get the desired shift points.