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  1. G

    Cat 279d3 crank no start. Cose e459-2

    Have checked grounds at ecm all have continuity to ground. The relay in fuse box for ecm dose not excite. I have both 12 volt supplies to the relay. If i ground the blue wire the code goes away but I get a speratic reading from ecm relay code. Have continuity from the back of relay post to both...
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