Why does my ecm 1 fuse keeps blowing as soon as I turn the key to the on position
I need help
It's possible that the fuse has other accessories working on it. For example, I had a Ford that the ECU and lighter shaded the same fuse.
That is not a good enough answer what is all on the ecm 1 fuse
Check ecm wires for short.If u are not starting the truck and the fuse is blowing that's where I would start
So had a gmc yukon xl that keeps blowinv the ecm fuse went through several connections and fuses inside and out and couldnt find the problem so i hooked up a scanner and it showed the fuel composition sensor circuit was low so i lifted the truck up and checked it out and checked the wires and found a couple broken and frayed wires that needed fixed that should take care of the problem cause everything else is fine
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