Hi;i've a civic ek3 96,swapped a b16a2 obd1.I have some wiring issues in the green plug 14 pin from the ecu side.I need a detail wiring diagram for that plug.Here are 2 pics which can help you to identify the plug i'm talking about..The pics are for obd2,but my request is based on obd1,i think they are all the same,except the wiring locations.

 

anyone,who can help me?

 

Download a 96-00 service manual and you will then have all the detailed wiring diagrams you could ever want. Its free, just searsch. I think there is a sticky on this site or google it.

 

i had no time to search for a manual or stuff when i depined mine.

so this is the wiring of the ecu plugs

but it's of a german '96 EJ9 (nonvtec sohc)
don't know if there are differences.



if there were same cables on a plug (like 2 black ones f.e. i marked them with a edding)

don't know if it helps you, but the wiring looks different than on your pictures...


Modified by Michael_[UR] at 11:17 AM 8/29/2008


Modified by Michael_[UR] at 11:17 AM 8/29/2008

 

Thanks for replying.your pics seems different from mine.Infact the second pic is not mine,its only for a reference to readers.
There are so many bad wiring in this plug,and i'm not able to correct them without accurate details.I think i'll need the help of those who have a civic ek3 sedan running with a 2nd gen b16a yr 92-95.Who can help me now?

 

i have the same plug hanging not plugged in and i have a 2000 si with a obd1 p28 and i dont think its needed b/c my car runs fine and i have no problems i dont know if you are just looking to see what its for or what but i noticed mine isnt plugged either...

 

but mine is plugged in the female/male.You might be saying the data connector plug.Because the 14 pin plug should be connected,else you must have ELD issue,check engine light will not work,etc..

 

im bout 99% positive its that plug and its not connected. i have no issues as of yet its just hanging over my hondata. i have no CEL or any problems but im pretty sure its the 14 pin green plug b/c its connected to the 3 others plugs that go into my p28.

 

this plug does not plug in the ecu.it is just like a transition plug.by the way,are you using a hondata s300?Because i'm about to buy hondata.Does it have enough tuning capabilities?

 

Hi mate
I have the same problem
I got a EJ9 Civic 1.4 , going to convert to B16a2
The ECU has only 2 Grey plugs going on the bottom off it
And 1 green one...
I thought all EJ and EK 96+ are OBD2a
But These plugs ie Grey ones plug straight into a P30 OBD1 ecu...

I was hoping /thinking if its best to get a OBD2a Vtec engine loom with the correct
plugs for the engine and use a ECU conversion harness from OBD2a to OBD1..

Will this work...?
Whats the simpliest wiring option for this?
I dont think i have the patience to figure out all the wires on the EJ9 curent loom to make it adapt to B16a2 and P30 OBD1

How did you go about it?

Also do you think the OBD2a loom idea will work??? Why did Honda put a OBD1 wiring loom /plugs into the ecu...When normally that shape car has OBD2 Ecu plugs style..

 

i was running s200 but i traded it in for s300 and doin a retune on it.. s300 is amazing does everything you need tuning wise...