3sgte swap, ECU Question Options

[115celi]

Basically, I am middle of a 2nd gen 3sgte swap and my wiring is setup for a 90-91 ecu (pinout from DR Tweak). It cranks but there is no spark. We have checked the igniter, coil, distributor and wires using the BGB from celicatech, and they all check out.

I went to google to see if I could find any info and ran across a web-site with some ecu part numbers. http://www.toysport.com/webpages/WebUpdate...A20ECU20WEB.htm
I found an ecu that had 89661-20760 for the part number and was wondering if there is a difference between this one and the 89661-20750?

I thought mine was right, I thought the part number on the ecu was 89661-20750 but part of the 5 is missing and it isn't really legible. I figured it was right based on the part numbers listed in a thread I found.
JDM 185 ecu's-
89661-20750=89/10-90/03(superceded to 20751)
89661-20751=90/03-91/08
89661-2b310=91/08-92/02
89661-2b280=91/08-93/09

Does anyone know if there is any difference between the ecus with 89661-20760 and 89661-20750, thanks.

[115celi]

ST185 ecu has pinouts printed on the circuit board.
Remove the cover and compare the pinouts with the one in BGB.

What if there is no pinout on the curcuit board? I checked for this before and I am sure it wasn't there but I'll double check.
DR_Tweak gave me the right pinout for the JDM st185(which I'm sure is what the ecu is out of because we had the whole front clip), and that is how it is wired.

It is there.
If you have 2 boards, you'll need to remove the top one first.

i only have one board and no pinout on my ecu.

Basically, I am middle of a 2nd gen 3sgte swap and my wiring is setup for a 90-91 ecu (pinout from DR Tweak). It cranks but there is no spark. We have checked the igniter, coil, distributor and wires using the BGB from celicatech, and they all check out.

I went to google to see if I could find any info and ran across a web-site with some ecu part numbers. http://www.toysport.com/webpages/WebUpdate...A20ECU20WEB.htm
I found an ecu that had 89661-20760 for the part number and was wondering if there is a difference between this one and the 89661-20750?

I thought mine was right, I thought the part number on the ecu was 89661-20750 but part of the 5 is missing and it isn't really legible. I figured it was right based on the part numbers listed in a thread I found.
JDM 185 ecu's-
89661-20750=89/10-90/03(superceded to 20751)
89661-20751=90/03-91/08
89661-2b310=91/08-92/02
89661-2b280=91/08-93/09

Does anyone know if there is any difference between the ecus with 89661-20760 and 89661-20750, thanks.

This sounds all too familiar. I went through the same thing a few months back. Turns out the ecm that came with my swap was for the wrong year. If you need a new ecm, Ive got one for sale. 89661-2B280 Let me know if you need any help. This might help you

celica wont start

thanks, but i am going to try to find 89661-20750 or 89661-20751 first, otherwise i would need to repin some things. i'll keep it in mind tho.