I was trying to reset my oil service light (by the way, I put in Mobil 10w30, is this good for Arkansas? First time using snthetic - I think I may change the oil after 2000 or 3000 miles this first time; call it "break in") and mistankenly connected pin 7 to the positive battery terminal instead of using pin 19 or any other good chasis ground. The worst part is that -- since it wasn't working -- I kept trying over and over. Now I read about 11.5 V on pin 7 with a voltmeter with the ignition on and nothing else connected to it. I have read a ton of other posts and other forums online and found one (and only one) place online that says pin 7 normally has +5 V. Is this right? Have I killed (at least part of) my ECU?
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