NefMoto > Technical > Diagnostics > Shorted out ecu now have B+ to pin 86 (cam signal) ME7.5
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Author Topic: Shorted out ecu now have B+ to pin 86 (cam signal) ME7.5  (Read 4439 times)
coltaaan
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« on: April 24, 2013, 07:50:19 AM »
ME7.5 I have B+ to pin 86 on the ecu. pin 86 is the camshaft position sensor signal wire and should read 5v sqaure wave. I have checked the wire from ecu to sensor. its fine. I got a used ecu installed it and it instantly fried it. Has anyone had this problem or possibly know the ecu schematic. I believe its only pin 86 that is fried. How can I track down this short?
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ddillenger
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« Reply #1 on: April 24, 2013, 08:01:50 AM »
Why is this a pole? How did you short the ecu?
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coltaaan
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« Reply #2 on: April 24, 2013, 08:44:27 AM »
Quote from: ddillenger on April 24, 2013, 08:01:50 AM
Why is this a pole? How did you short the ecu?

Sorry first time on this forum didnt mean to post as a pole. Thats what im asking I dont know what is shorting it. I have tested all the basics power & ground to ecu the camshaft signal wire all are good but something is causing a short to happen and i believe its only on pin 86.
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ddillenger
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« Reply #3 on: April 24, 2013, 08:52:53 AM »
Why did I write pole instead of poll? lol

Check your o2 sensor wires for damage.
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coreyj03
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« Reply #4 on: April 28, 2013, 06:22:28 AM »
I have also seen a bad cam position sensor cause a no pedal issue but this did not fry ecu,along with all the other things such as melted o2 sensor wires internally shorted o2 sensor due to water damage
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