what is te deal with ecu. is there a list of which are obd1 and obd2?

[illvialuver]

Okay I fried my ecu and i need another one.
I have an obd2 s14. I know this because it is a 96.

the problem is which ecu's are obd2?
and if i am 5speed will a at ecu do the job?
and I also heard that the obd2 starts in the late part of 95 and than in 97 they changed them a lil bit and you have to modify the 97 and 98 ecu to make tem work on a 96 obd2.

point is I have been googleing all this shit for the past few days and cannot find anything. it is driving me crazy. I really need to find this out. because I bought a 96 at ecu from r and d factory and it has yet to arrive and my fried has a ecu that is coded 3t and i want to be sure that it is compatable. any help would be greatly appreciated. thank you so much.

[murda-c]

An OBD1 ecu will work fine. Any s14 ecu after 95 and before 97 will work fine really, you'll just have a check engine light if you use and AT or OBD1 ecu.

It's easiest to use the ecu out of a zenki, because there's no real reason to use one out of a kouki when zenkis are readily available on ebay and the forums. Plus you have to do a little wiring to use one in a 96.

http://zilvia.net/f/sale-items/88052-fs-96-manual-obd2-ecu.html

see if that one is still for sale.

If you can't find an obd2 one, any zenki will do, but only obd2s will pass emissions.

[illvialuver]

oh so very helpful.
well does anyone know which codes like the t3 or the ca ecu mean?
for example which ones belong to the obd 1 or the obd2s
and which ones are at or 5spd?
is there a print out or a list from nissan?

[murda-c]

I have a list on my laptop...but my battery died.

I'll see if i can find it again.

I think i might have gotten it from NICO or KA-T.org

[projectRDM]

All 95s are OBD-I, but a 96 will work fine. A 97-98 ECU will require repinning of three wires, JWT has a PDF file of what's required. Auto ECU works fine in a manual car. JWT's site also has a full listing of OE numbers for all the Nissan ECUs.

The codes will relate to the ECU, so a 96 will show OBD-II codes, on a generic scanner they start with a 'P'. Refer to the FSM for codes, some changeover form 95 to 96.

[surreybc]

1989-1998 240sx: Computer compatibility Tutorial: Nissan Online Mechanic: Nissan Forums / Infiniti Forums - NICOclub (http://forums.nicoclub.com/zerothread/312528)

[illvialuver]

its too bad that when i go on jwt gives me a seizure . that damn black and blue background.

but thanks for the info
very helpful
and its about time this stuff is on zilvia.

[murda-c]

http://jimwolftechnology.com/wolfpdf/WIRING%2097+%20240SX%20TO%2096%20ECU%20WIRE%20MOD. PDF

There's the pdf from JWT, shows how to use a 95-96 ecu in a 97.

I suppose it would be the reverse of that to use a 97 ecu in a 96.

But it's really not something you ever need to do, cuz nobody tunes 97 ecus, and 95-96 ecus are more common and cheaper.

[illvialuver]

so helpful.
im going off the two letter code not the intire code.
and why are there so many damn ecu's for the 240s?

anyway thanks for all the help. if i cold posi rep this would call for it.
because now i just found out that my friend has the one i need for free, and it will be here in 2 days. i dont have to worry about waiting a week and a half for priority mail from a business when my friend will ship it ad i WILL get it in 2 days.