Minimum wire harness for engine operation? - Toyota Yaris Forums

CrankyOldMan · 01-03-2016, 10:11 PM

Yeah, the engineering world is surprisingly cutthroat when it comes to knockoffs.

I spent a bit more time today going over the wire harness. Took off all the A/T stuff that isn't needed, made a few pin swaps to get some M/T wiring in the right spot, and started cleaning up my wiring schematic. Looks like the harness I bought is missing the TPS--bastards just chopped it right off instead of removing it. There are still about 10 wires on the E4 connector, since I don't know for sure what signals the ECU requires to operate. I'm going to put together a spreadsheet with the pinouts of each ECU connector to help with collaboration.

I also scored a '14 Yaris A/T ECU and engine wire harness today as well, with the intention of making a piggyback wire harness adapter from it.

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01-03-2016, 10:11 PM	#17
CrankyOldMan 2ZR swap. DO IT! Ask how! View User's Garage Drives: 09 Meteoric Metallic HB Join Date: Feb 2011 Location: West Michigan Posts: 2,333	Yeah, the engineering world is surprisingly cutthroat when it comes to knockoffs. I spent a bit more time today going over the wire harness. Took off all the A/T stuff that isn't needed, made a few pin swaps to get some M/T wiring in the right spot, and started cleaning up my wiring schematic. Looks like the harness I bought is missing the TPS--bastards just chopped it right off instead of removing it. There are still about 10 wires on the E4 connector, since I don't know for sure what signals the ECU requires to operate. I'm going to put together a spreadsheet with the pinouts of each ECU connector to help with collaboration. I also scored a '14 Yaris A/T ECU and engine wire harness today as well, with the intention of making a piggyback wire harness adapter from it.