silverbullet9626

I recently swapped a jdm b16a into my 96 civic dx coupe. I used the jdm harness and ecu the only sensor that didn't plug up was power steering or ac cant remember but dont have either. i can jump the blue plug under the dash to manually see the cel code on the dash and i get the iat sensor and the knock sensor but when i try to put it on a obd tester it says error like port isnt getting any power. im not sure where the port gets its power from but the green plug near the ecu that feeds out of the dash and into the harness had a pinched wire (yellow) on the harness side of the plug. i repaired the wire to see if that was the problem and it made blue jumper plug quit working. every time i try it with the wire fixed the light stays on it dosent flash a code at me. as you guys can see im at whits end and tried every thing i can think of so if anybody can help it would be greatly appreciated. ive got to get this thing inspected by the end of the month

Relic1

JDM ECUs are not OBD2 reader compliant.
So you will never pass emissions with a JDM ECU in an OBD2 car. You'll need a USDM ECU to pass the scanner test.

crudely done, drop in any 1.6L ECU for a day or two, drive like a grandma and pass emissions.
Drop in the JDM ECU and have fun for the rest of the year.

doing it right, convert to OBD2b and run a P2T ECU. Then deal with the CELs that will pop up.

B18C5-EH2

JDM ECUs do not communicate with scan tools, period.

B18C5-EH2

Same time Relic!



Yes if the car has to pass emissions where a scan tool is involved then you are in for some nightmarish stuff my friend.

In order to pass you will need a USDM ECU, and the 2nd o2 sensor will need to be hooked up, you will need to do the CKF sensor trick:

http://technet.ff-squad.com/ckftrick.htm

You will need a cat convertor or an emulator to fool the ECU, and basically drive the car with an OBD2 ECU and see what codes it throws.

Your biggest problem will be finding an OBD2A ECU - only 96-97 Del Sol VTEC, 96-98 Integra GS-R, or 97-98 ITR ECU will be a fool-proof ECU to run. Many times the EX ECU will code immediately for system too rich/lean on a B16A.

B18CivicEJ8

You could try Ebay. They are usually around 100 - 125. That's where I got mine to solve my emissions prob. GL!

silverbullet9626

now that i know what my problem is what usdm ecu do you suggest i get to run in the car permanently.

B18C5-EH2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silverbullet9626 &raquo;</TD></TR><TR><TD CLASS="quote">now that i know what my problem is what usdm ecu do you suggest i get to run in the car permanently.</TD></TR></TABLE>

I already posted that:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">Your biggest problem will be finding an OBD2A ECU - only 96-97 Del Sol VTEC, 96-98 Integra GS-R, or 97-98 ITR ECU will be a fool-proof ECU to run. Many times the EX ECU will code immediately for system too rich/lean on a B16A.</TD></TR></TABLE>

silverbullet9626

thats not what im asking you. anymore. im asking say my ecu that i have now is a JDM ecu with the numbers P2T-003. which is i know for a fact a jdm ecu. ive seen P2T- A11 and P2T-A12. is that a usdm ecu or do the numbers even mean anything? basically im asking what a (USDM) b16a's ecu is goin to say as far as the serial number on the ecu box.

Relic1

P2T-003 is a JDM ECU
the USDM versions for the 99-00 SI were A11 and A12. (the A11 was replaced with the A12)
And as B18C5-EH2 said, the DelSol VTEC ECU will also work, it's a B16 ECU that's OBD2a, it's the P30-A01 and A02. But they are hard to find. Only the DelSol VTEC had them, and only one year a peace. A01=96, A02=97. The A00 is 94-95 but is OBD1.

Since it's JDM it's OBD2a, and does not require a lot of the USDM emissions equipment, but will never connect to an OBD2 scan tool. The hardware and software simply isn't there in the ECU to communicate to the tool.
Which is why I and B18C5-EH2 suggested getting a separate ECU just to pass emissions and run your JDM ECU normally.

silverbullet9626

so just to clarify i need a P2T-A11 or P2T-A12 ecu or a P30-A01 or P30-A02?


Modified by silverbullet9626 at 2:58 PM 7/28/2008

Relic1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silverbullet9626 &raquo;</TD></TR><TR><TD CLASS="quote">so just to clarify i need a P2T-A11 or P2T-A12 ecu or a P30-A01 or P30-A02? </TD></TR></TABLE>
P2T-A11 and OBD2b to OBD2a harness
or
P2T-A12 and OBD2b to OBD2a harness
or
P30-A01
or
P30-A02

like B18C5-EH2 said, the P72s and P73s are always options as well... but they will not run the car as well. It all depends on what you can get your hands on.

silverbullet9626

sorry for all the ?'s but what is the diff. between obd2a and obd2b.
and do i need a jumper harness from one to the other?

THC07

Obd2a
1996-1999 Acura Integra
1996-1998 Honda Civic
1996-2001 Honda Prelude
1996-1997 Honda Accord

Obd2b
2000-2001 Acura Integra
1999-2000 Honda Civic
2000-2001 Honda Prelude (Some models differ)
2000-2002 Honda Accord

Relic1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silverbullet9626 &raquo;</TD></TR><TR><TD CLASS="quote">sorry for all the ?'s but what is the diff. between obd2a and obd2b.
and do i need a jumper harness from one to the other?</TD></TR></TABLE>
pin locations and slightly different emissions requirements. (very slight)
yes you need a harness to go from one to the other. (hence why I mentioned it in my previous post)

silverbullet9626

okay so i have a 37820-P2T-A11 ecu from a 00 civic si. its got 89K miles On it. And it is STAMPED ( MAR-17-2000) so i know its a 2000 ecu. anyways obviously my car is OBD2A. and i have an OBD2B motor and harness. to make it work with my Car i will need An OBD2B to OBD2A jumper harness Correct. what im trying to get at is do i need to convert the motor and ecu to obd2a or the car to obd2b


Modified by silverbullet9626 at 11:37 AM 8/3/2008

silverbullet9626

what happened did you give up on me?

OMGWTFBBQ!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">

In order to pass you will need a USDM ECU, and the 2nd o2 sensor will need to be hooked up, you will need to do the CKF sensor trick:

http://technet.ff-squad.com/ckftrick.htm

You will need a cat convertor or an emulator to fool the ECU, and basically drive the car with an OBD2 ECU and see what codes it throws.
</TD></TR></TABLE>

All the info you need is right there.

silverbullet9626

I know I just want to be sure that i buy the right thing ive already put 4k into this swap. so is it b-a or a-b?

OMGWTFBBQ!

OBD2b - OBD2a

silverbullet9626

thank you very much


this is what i found it is a 2b-2a he says it is for a 2a ecu i have a 2b confused agian

http://cgi.ebay.com/ebaymotors...sting



Modified by silverbullet9626 at 12:35 PM 8/3/2008

silverbullet9626

this is a 2a-2b harness says it is for a 2b ecu which i have

http://cgi.ebay.com/ebaymotors...ZWD1V

silverbullet9626

bump

Relic1

I have trouble with ebay auctions for this very reason, too many people taking other auctions and modifying them (poorly) for thier own little business. Most of the time the description or images are so wrong its had to tell if you're going to get the right thing or not...

I don't like putting it this way, but buy this... http://rywire.com/store/obd2a-...0c371
(this is what you want, you don't have to buy it from rywire, but it will be correct if you buy it from them)

*edit*
same thing here... http://cgi.ebay.com/ebaymotors...photo

silverbullet9626

i appreciate you clearing that up for me. i understand what you mean by the ebay guys changing things for themselves

silverbullet9626

Okay so i have put a obd2a to ob2b conversion harness and a P2T-A11 ECU. now the car is showing code 22, 54, 65. code 22 is the vtec pressure valve. but yet the vtec still hits. 54 is the ckf sensor which we expected. and the 65 is the secondary oxygen sensor heater wires. im pretty much lost.. so where should i start to get this thing with no check engine lights so i can get it inspected?


Also with the JDM ecu the only code i get is the knock sensor code. but the USDM ecu dosent show the knock sensor code.


Modified by silverbullet9626 at 2:59 PM 8/15/2008