Lift puno no sound truck wont turn over.

[Ninoslav85]

Hi guys, this is my first time on tgis forum and im not sure that im doing this right. Hehehe. I got a 07 volco with cummins isx. My lift pump doesnt make the whinning noise anymore and the truck wont turn over. Ive tested all the fuses at the battery all the way to the relay by the ECM. They are good. Ive tested if power is coming to the ECM and im showing 3v when the key is on. Ive tested the wires coming out of tge battery and they all are 11.7 to 12v. Do i have a faulry wire harness or is it something else? Can someone help. Thanks.