Honda Usefull Ecu Pinouts OBD2B OBD2A OBD1 | EK9 JDM The other day I had to make a mod to my wiring to get rid of code 22 I was having with my new ECU. The mod is to splice the VTM with the VTS, well **** I don't even have a VTM wire. Sort of weird if you ask me, but then again here in the states we aren't use to .:FFS TechNet : OBD2a ECU Pin out Schematics OBD2A PLUG CONFIGURATION Below is an example that shows the onboard (female) connector configuration for an OBD2a ECU. Take note of plugs: A, C, and D. The blank connector (B) is only used with civic/integra vehicles equipped with A/T. Obd2a Civic O2 Wiring Diagram | Wiring Diagram Database Obd2a Civic O2 Wiring Diagram. By Mark Mendalyev On September 25, 2019 In Wiring Diagram 147 views What is the difference between OBD2A and OBD2B bump an old thread, i know the design is diff. but im running a 00Y8 motor with a 96Y8 ECU and engine harness. it doesnt feel as strong as my old motor and jerks violently at times and runs funny. like its choking for air or something. would like to know the difference between the two and if i could use my 96 ecu plugs and just plug it into a .:FFS TechNet : OBD2b ECU Connector Schematics OBD2B PLUG CONFIGURATION Below is an example that shows the onboard (female) connector configuration for an OBD2b ECU. Take note of plugs: A, B, and C. The blank connector (D) is only used with A/T specific civic/integra vehicles. OBD2B ECU Quick Reference Wiring Diagram For Swaps OBD2B ECU Quick Reference Wiring Diagram For Swaps - Thanks to Katman and ff-squad for the image - Sign up for our Newsletter. PRODUCTS: Chipped OBD1 ECU Packages Plugs / Pins / Connectors / Wiring Wideband Sensors / Gauges Ignition System Fuel Pumps / Fuel Injectors Hondata Brand Products Neptune Brand Products Moates Brand Products OBD2B wiring diagram? | ClubCivic - Honda Civic Forum it seems that all the wiring diagrams i can find online are OBD2A diagrams. anyone have an OBD2B diagram? more specifically, for the EM1. a full EM1 service manual would just be awesome.