TheEvilTwin76
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hi
I've just been reading your post on vfr discussion about the dead ecu, did you ever work out what went wrong? did you manage to get the bike to run? also what were the symptoms. the reason i ask is my bike failed to start last week and i suspect the ecu, i have no spark and the ecu is not switching the injectors
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To be clear, I am measuring the resistance across the pins identified in the picture below. The way I isolated the short circuit was by measuring resistance from the black and white wire at the engine stop relay to ground. I found this resistance to be very low ~0.2ohms, which would allow for more than 30 amps of current. I then systematically unplugged all the components that get power supplied by the black and white wire, and re-measured the resistance from the engine stop relay connector to ground. The resistance remained low until I unplugged the ecu connector. This leads me to believe that there is an internal short across the ECU.
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I have a 2003 VFR800 VTEC I am trying to isolate a short circuit on. I think I have narrowed it down to the ECU, but I would like to confirm what the resistance across the ECU should be. I am looking at the resistance from the voltage supply pin to the ground pin, or pin #12 to pin #14 on the grey connector. Another way to explain it is the resistance from the ecu pin connected to the black and white wire to the pin connected to the green wire (both on the grey connector). I am currently getting less than 0.2ohms. Is anyone able to confirm what the resistance should be on a functional ecu? Any help would be greatly appreciated.
