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International Automotive Technicians Network
Re: injector circuit open
Posted to HD/Fleet Forum on 1/27/2021

Pretty sure Cyl 1,2,3 share a common power supply. Cyl 4.5.6 share a common power supply. ECM controls injectors on the ground side. So a problem on the power side will knock out 3 injectors. Take a close look at all the connectors/terminals, a magnifying g... Login to read more.