2ZZ-GE Swapping my CDN 06 Yaris Base

[Lucas@AirLift]

Originally Posted by remcafee

dude, take my money if you can build a 2zz harness for a yaris!

That I cannot do... for you or anyone else at least. You have to be on some type of standalone, with the yaris ecu still in place to make this work. Well, at least if you want power steering and your gauge cluster to work. A first gen Yaris/Vitz/Echo would not have this issue as the first gens are standard hydraulic power steering and cable throttle. My second gen and all later Yaris' with electric power steering must have the stock, or a stock ecu in place that operates on the CAN bus. The EPS ecu looks at the powertrain ecu for things like rpm, vehicle speed and other data to determine how much assist to provide. I have been trying to reverse engineer the Toyota CAN protocol to make a CAN device from the Speeduino to talk on the CAN bus so I can eliminate the stock ecu all together, but until then a stock ECU must be in place.

That said, IN THEORY, the Yaris ECU and wiring harness would probably be able to start up a 2ZZ, it would just run like crap. This among other reasons is why a 2ZR is so much easier in this chassis. The 2ZR ecu will talk with all of the factory Yaris electronics which is why you can make 2ZR swaps CARB legal.