It's not exactly the same as the pm6, cause the 2wd wagons use dual point injection. Basically its the same setup as a Civic / CRX DX. I think they were pm5? I tried looking for ya, but both of the links I found with this info, they no longer work. And the one I did find only had info about obd-0 VTEC ecu's. Try searching through hondatech, you might have better luck there.
I'm not really good with finding wiring diagrams for specific PCM's. However...give me a year make and model of the car which has that pmc in it and I can find it for u.
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Hope this helps.