Thread: OBD2 -> OBD1 stepdown harness diagram

Once you learn how to spell! My goodness it has really been bad on this forum lately. I can't stand the shorthand slang that is used, call me old I guess!

Brent

THIS.

So damn tired of it lately. I should start issuing infractions for lack of English grammar and punctuation.

maybe cause im not on here all alot but is it really that serious ??

Hi Cliff or anyone who could help me here,

If you could kindly share the diagram(s) with me by sending to my e-mail. I am currently trying to figure out a ECU swaping of my B14 200SX SE-R to a W10 ECU.

Greatly appreciate your kind assistance in advance!

FYI: my post in tuning section http://www.sr20-forum.com/tuning/40086-swaping-my-stock-ecu-1995-200sx-se-r-w10-ecu-95n11.html

Hi Cliff,

Wow, thank you very much, this is great!

I noticed that from the table OBDI (pin 45) -> OBDII (pin 37), they both are not used from their own pinout... why still need this connection?

Is the consult data link plug included in the table? Looks like they are not used in OBDII pins (64, 65, 68) from the table above.

Anyway, this is a big help already, thank you once again!!

That much I cannot say for certain (37<->45)

I cannot confirm/deny the consult link, either. I've never used a consult cable, I've always had a Calum Realtime, as long as I had owned the car.

Thank you for the reply. these info are already very helpful.

I think these are the pins related to consult link plug (not in corresponding order):

OBDI: 7, 15, 14, 23, 47, 39
OBDII: 64, 65, 68, ??, 56, 10

ps. the pins are not in conversion or connecting correspondance.

Anyone has more info on the consult link? are the pins above related to it? and how they are connected?

Here are the circuit diagrams:

OBDI - Circuit diagram SR20DET

http://www.wretch.cc/album/show.php?i=charleshsiao&b=2&f=1165034439&p=0

OBDII - Ciruit diagram B14 SR20DE (200SX SE-R)

http://www.wretch.cc/album/show.php?i=charleshsiao&b=2&f=1165034440&p=1

(Apologize for not able to show the pics, so I've provided the links)

Hope this can further help to identify the pins for consult links.

Anyone who can help out?

Cheers,