The factory OBD1 Integra GSR B18C1 IAB control solenoid has a 2-pin connector. One wire (yellow w/black stripe) supplies +12v to the solenoid, while the other wire (pink w/blue stripe) goes to OBD1 ECU pin A17 on the P72 GSR ECU.

Mar 3, 2008 · This is the parts kits used to Add OBD1 Style (ECU grounds) IAB control to your 11F0 or 1720 Board P05, P06, PR4 or P28 ECU. IABs or Secondary Intake butterfly valves are used on Stock GSR and Stock H22 intake manifolds, please read our write-up in the Tech Center about this and how to install these components to your ECU."

For those of you looking for the IAB pin needed for the B18C4 scroll down to the bottom of the page. That all said, here is the OBD1 big mash-up layout: Common OBD1 pinout. This layout is based on EDM and USDM P06, P28 and P30 ECUs for D15B7, D15Z1, D15Z3, D16Z6, D16Z9 and B16A2 engines, but not limited to.

Mar 25, 2003 · IAB, (signal=Pink to ECU pin Pin A17 ), (power=Blk/Yellow to 12v+ switched power source (hot with key in "on" or "start") The pin locations above are in reference to the standard OBD1 Honda Pinout diagram (which is the same for all OBD1 Honda/Acura vehicles: Preludes, civics, teggys, etc):

Jan 12, 2004 · Here's a quick chart of what to check when wiring in your 94-95 Integra B18C1 or 94-95 del Sol VTEC B16A3 into your EG. Most jdm motors will also follow this guide, but some changes will be made to your stock harness for it to work properly.

In this article, we show you the full OBD1 pinouts of Honda, GM, and Ford vehicles. You can also download the handy PDF file for free!

Feb 22, 2025 · From what I've read the IAB pin on the JDM ECU is 17 not 19. My conversion harness has the OBD2 pin A26 going to pin 19 on the OBD1 side of the harness. This was my first concern, but I decided to see if the IAB's would work the way it was wired.

Sep 16, 2004 · For the IAB you will need to move A20 to A17. Since you will be using the OBD2 engine harness and an OBD1 GS-R ECU you will need to cut the black wire at the IAB plug and give it a 12V switched source. You can get this from the yel/blk wire at the injectors or the IACV.

Jun 24, 2006 · Take out the resistor in R135 and take out D13 if anything is there. Put a jumper from the right side of R135 and connect it to the left side of D13 where the arrow is pointing just like in the picture. A17 is the pin for the IAB's and the ecu is sending the ground signal through it.

Jul 14, 2014 · While it doesn’t share the same aftermarket support as it’s B series brothers, the H series engine has recently undergone a renaissance with the H2B adapter plate. This adapter plate allows you to bolt on a B series hydro transmission for the absolute best of both worlds.