Hilux 4x4 Forum

So I took out the UCON EMS and did a very basic wiring of the PerfectPower piggyback, only to control the MAF sensor signals, and it works perfectly. So nothing is wrong with my harness or wiring, it is either a bad unit, or it is incompatible with my Fortuner ECU. https://www.youtube.com/watch?v=Po...

I didn't change the ECU. Just wondering if there are differences between them.

Checked the ground signal for coils, they are working fine. So that can't be the problem here.

That's a very good point. All coils have a common ground, it could be a grounding problem.

ECU part numbers vary even within the same vehicle, at different year models. Part numbers most definitely will not match. Even within HiLuxes of different year models they will have different part numbers.

Those codes mean that all six ignition coils not working.

It is a piggy-back, but a very sophisticated one. It works in closed loop, monitors MAF, AFR and O2 sensors, and adjusts its tune automatically and accordingly.

Hi there, I know I'm not a very active member here, but I have reached a roadblock in my project and need to talk about it. I got a supercharger installed on my Fortuner V6, and ordered an Engine Management System from URDUSA.com, which is a plug-and-play unit that fits straight on to the 1GR ECUs. ...

Being very late, I know rock-auto.com has every part ever needed for the 1GR-FE engine.

What a wonderful trip, and what a wonderful report. Keep them coming.