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Roundy
01-06-2012, 03:10 AM
Hi Guys,

I am after a pin-out diagram for ECU part no. 89661-20770

Found a couple of threads on here, but none that actually show a pinout diagram.

Anyone got one floating around?

Cheers
Nathan

4thgenceli
01-06-2012, 03:12 AM
Um..yeah lemme pull that up.

What motor is this from again?

Hookecho
01-06-2012, 03:53 AM
It's for a 90/91 Euro spec GT4. It's the same as the 90/91 ST185 JDM ECU afaik.

http://www.celicatech.com/gallery/files/4/1/4/3/st185ecupinouts_1.jpg

http://www.celicatech.com/gallery/files/4/1/4/3/ecusignaldescription_1.jpg

Roundy
01-06-2012, 07:34 AM
1990 Australian ST185

The interesting thing is far that as i know this is an aus delivered version, so why it is Euro version seems a bit odd

Also i note that the JDM don't list a pinout for EGR, however my engine definitely has EGR...

Have also found a reference saying it is supposedly the same as the UK ECU....

Its all too hard LOL

Hookecho
01-06-2012, 02:30 PM
Well, maybe it's the same as the US/Canada version. Take the cover off of the ecu and read the pinout printed on the circuit board.

http://www.ts-ogn.no/files/3sgte-ecu-pinout.htm

Hookecho
01-06-2012, 02:30 PM
Well, maybe it's the same as the US/Canada version. Take the cover off of the ecu and read the pinout printed on the circuit board.

http://www.ts-ogn.no/files/3sgte-ecu-pinout.htm

Luni
01-06-2012, 10:35 PM
Do you have a 1 wire or a 4 wire O2 sensor?

Roundy
01-08-2012, 07:23 AM
4 Wire Oxygen Sensor.

Looking inside the ECU, there is no pinout details in there :(

Having a look at a 4A ecu i have i can see where they are meant to be, but nothing in my 3S ecu

Hookecho
01-08-2012, 08:19 AM
That's odd.

Roundy
01-08-2012, 09:39 AM
I was thinking annoying, or aggravating lol

Hookecho
01-08-2012, 04:43 PM
Should be the same pinout as the 90/91 USDM/Canada ECU if you have a 4 wire O2 sensor.