Hi, I’m new to these older Honda engines so I am stuck trying to find wiring diagrams and scope captures for some sensors I’m checking. I have a 1993 civic 1.5l auto trans crank no start. There is no pulse on yellow green wire to inc as well as no injector pulse. All injectors have 12v at plug and the wires at icm have correct voltage there is just no grounding pulse coming from ecu to icm. I scoped the crank sensor + wire and got a waveform that was unfamiliar to me as I usually work on newer square wave crank sensors. Does anyone have a pic of a good crank and cam sensor wave form? I am thinking crank isn’t sending a good signal for ecu to fire spark or injectors. Also any wiring diagrams you believe to be useful would help as mitchell doesn’t seem to have anything but connector pin outs. Any other suggestions or input on this situation would be appreciated
Thank you for your time and help!
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