Hey guys, it’s me again. To start with some good news: the 3SZ is in, and it all looks good in terms all the bolts, nuts, wires, plugs, hoses etc etc. [WhatsApp Image 2021-08-22 at 16.45.25] Now the bad news: the car will not run. The fuel pump runs, all the electrics work, the timing is right, a…

If you are using the cars keys and immobiliser but a different ECU the ECU won’t recognise the code for the key because it doesn’t match the code stored in the ECU. Don’t think you need a master key, just need any key that previously worked with the car. It may be possible to reprogram the ECU but…

I tried that jumping the pins like stated in that video when I tried to get a Storia ECU to work in my sirion. Didn’t work unfortunately. I was told by a Toyota service place that you need a the scan tool Daihatsu used to reset the ECU code. There were 2, one was the Denso DS21 and I don’t remember …

I would suspect your problem is the immobiliser. Sorry but nothing else to add from DaryLW or b_hoves. All the best with it.

Agree its most likely the immobiliser. We had the same problem when fitting the EJ-DE into the Mira and the easiest way to solve the problem was an aftermarket ECU

There is a small 6 pin IC in the ecu that stores the immobilizer codes. you should theoretically be able to swap it out, there are plenty of how to guides on the net about how to do it on denso/Toyota ecus. I’m pretty sure I have even created a topic about it here in the forums with a bunch of lin…

Thanks for the effort! I might be able to get the original key from the 3SZ, which would solve the problem, but I’ll definitely keep this as an option. Thanks a lot man!

Cut terminal no 39 from ecu then wire jumper to ground.

Have you actually tried this? In my brain I had the same idea but am unsure of the actual immobilisation strategy of the ecu. Does it just cut power to the relay or does it not send the firing signals to the coils?

Live To Dai

3SZ WON'T START, IMMOB?

Questions and Answers

Mick August 24, 2021, 6:54pm 7

Found it

Swapping ECU in my Cuore K3VE, need higher rev Questions and Answers

Hi, I am running a K3VE from a 1,3 Copen in my Cuore. The Engine got different cams but is only able to rev till rev limiter at 6800rmp. Ive heard that it isn´t possble to write the Dai ECU´s. Therefore my plan is to change the ECU to an ECU from K3VE2 Sirion engine. This revs 7000rmp+. Is the change of ECU´s possible. Will I get in trouble with keys or something? Thank you guys!

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