Been having this TPS Circuit Malfunction code forever out of nowhere, car still runs fine, but I'm sure I'm losing out on some power. I checked the ecu, someone had soldered the wire some time before, but it had broken. Fixed it correctly, checked pin terminal in connector, was all good. Still no TPS volts or %, how can I diagnose what is wrong and causing this? I have tried 3 good TPS and no luck. Anyone have any advice on how to diagnose this issue?

Did you check if you are getting voltage at the connector?

Yes there were no volts at it.

You have to check continuity from each wire.
From TPS to ECU, Ground wire, and the rest of the wiring, just to make sure the wiring is good,
Looks like you might have a bad wire or some sore of it.

How exactly is that done?

How could I reach to the pin at the ECU and the connector in the engine bay? I don't think my terminals are that long

Use a long wire to one side of the terminal.
Check continuity from ECU pin #84 to TPS


http://www.dsmtuners.com/threads/2g-turbo-ecu-pinout-w-wire-colors.281763/

I don't have time but anything you want to know about your car just add DSM 2G to what you search for and it will show up.

Okay well I did it a little backwards and did the voltage check first with my multimeter, and I got 0 volts for all except on the green wire I got 0.63 volts. Is that correct?

Okay, so the positive wire gets 5v, the yellow wire I think it'd idle switch gets like 4.50, signal wire gets 0v. I checked continuity at the signal wire and there is continuity, did from the wire terminal at ecu to the connector at tps.