The 2zr-fe engine swap guide

[CrankyOldMan]

Originally Posted by tmontague

That's what i'm wondering. Can you just purchase a non immobilizer xD ecu and then just remove the immobilizer from the steering wheel and just run a regular tumbler and get new keys cut to match.

Therefore key turns tumbler to activate starter and ignition, no immobilizer to turn off the engine.

I don't think you'd even have to go that far. From what CT is saying, you just have to disconnect the K-line from the key transponder ECU (pin 9). Same key, no need to remove the coil from around the tumbler, no need to remove the transponder ECU.

The key probably just has an RFID chip in it. The transponder coil is just a length of wire wound around the tumbler that acts as an antenna to "ask" the key what info it has. The transponder ECU converts the wireless signal into control/commands for the ECM, saying "go ahead and crank, it's the right key".