S54 actuator and AE111 Throttle Calibration issue: Link G4X

Hi guys, looking for some guidance and possibly a solution.

I've finished adapting a BMW S54 throttle actuator to my 2zz and am using it to drive 4age blacktop throttles. The throttles are unmodified and have their return springs intact. The same can be said with the actuator. Currently when trying to calibrate the TPS, the system starts to go through the process, completes the first closed, and first opened sweep of the throttle plate. Test says that it's closing the TB again but doesn't, and it give the message that H-Bridge polarity is reversed. This happens regardless if I change the output state to high or low for aux9. I was previously using the same wiring setup to drive a stock E-throttle so I know the wiring isn't the issue on the ECU side.

I've switched the sensor pins on the TPS plug because it was originally opening the throttle when the calibration was closing it and that fixed that error but I am stuck at what to do. Any help would be greatly appreciated

I've scoured the internet trying to figure out what the issue is here and only came across this post which describes exactly what I am experiencing:

https://forums.linkecu.com/topic/13879-tps-calibration-issues/

I just made a log and will be going through that in the mean time. Here is the link for the Log and Cal. Log is dated for todays date in PST and the cal is named "itb e throttle"

https://drive.google.com/drive/folders/1CiPYR6NEtvaxv4rIjn_7SoY6Vur5pgp1?usp=sharing

Solved it.

It was a return issue. I had my turnbuckle set up in the accidental 1 in a million position where it would lock at fully extended. It would only return if there was an initial torque to return it. Manual calibration wouldn’t work; I tried that as well.I ended up just rotating the arm on the S54 actuator 180 degrees from the stock position and run no spring on it. It works perfectly now.

As per an application engineer's explanation on how the calibration process works:

"Before calibration the ecu has no idea which way is open or close and which way the motor has been wired. So it first powers the motor in one direction, zeros the TPS, then powers in the other direction, sets this to 100%. Then it turns off power to the motor, if it sees the throttle blade move backwards towards the "zero" position then it knows the calibration was done in the correct direction. If it turns power off and the blade doesnt move then it suggests the blade was already closed - therefore it has been calibrated "back to front" "

So lesson is. Make sure your throttle can either fully return/extend without getting locked in either position