Engine Swaps - Using an Immobilizer ECM

[atomic_hoji]

Updates to the original post completed today; need to rough out a troubleshooting section. Since I didn't end up having trouble with the Immobilizer system I'm not sure how much I'll have to write in that regard. Figure I'll make a note of some other things that I did run into and leave it for room to grow as we collect more information - as hopefully some more folks will give it a try and we'll have more information to collect and document.

Originally Posted by tmontague

great idea for a separate thread on this, looking forward to seeing how you got this to work.

I assume the techstream was the turning point as I'm pretty sure the dealership can make a new ecu mate up to the original immobilizer ecu located at the ignition

I actually only used Techstream to download all the manuals for the two vehicles; due to some other issues that are not Immobilizer related I have ordered a fairly inexpensive Techstream compatible cable now, but I didn't need it to complete the registration procedure. It turns out that the registration procedure is actually fairly straight forward once you establish that the components you have can communicate with each other. And I don't mean to say that to put anyone out about using the non-immobilizer ECMs; it was a gamble that they would actually communicate correctly based solely on reading the workshop manuals and finding the post of a successful swap of a 2UR in place of a 2GR in an IS350 on the Club Lexus forums. The dealer making it work was in my back pocket as a last resort if the registration or a bypass trick didn't work out - I was not looking forward to explaining what I had done to a dealership if I didn't have to, lol.

In hindsight I wish I'd pulled the manuals for the 2nd gen. Yaris and the Scion xD for better comparisons, especially because there are xD components that I ended up using. I'd really like to run down the 2nd gen., Corolla, and xD EWDs and see how they compare.

Originally Posted by ArmstrongRacing

This is so awesome. Great work man!

Glad I can contribute back to the community with some information that is (hopefully) useful to the next person.

-- Adam

[CrankyOldMan]

Originally Posted by atomic_hoji

Glad I can contribute back to the community with some information that is (hopefully) useful to the next person.

-- Adam

Absolutely! This means that there are other possibilities for us in the future, like a stock 3ZR swap.