Okay here the problem my CEL came on so I go and plug my OBD2 reader/scanner up and it telling me its not getting a signal from the ecu. So I'm thinking maybe a wire or wires isn't hooked up correctly. The car is a 99 Civic Hatch Dx OBD2b when I first swapped in a 01 b18b motor using the 01 b18b OBD2B ecu I had to switch around a few pin outs on the ecu harness for the car to run correctly.

Everything worked fine if I threw a code my reader/scanner would tell me what code I'm throwing. Now I have a b18c using a 96 gsr ecu OBD2a I had to buy a conversion harness to run that ecu. Well now it seems like my reader/scanner won't get a signal from the ecu. So What I'm trying to figure out now is what wire do I need to switch back or hook up to get signal from the ecu?

 

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