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Re: Maxforce DT MAF and EGR codes
Posted to HD/Fleet Forum on 4/24/2019

There is 2-40 amp fused circuits that come from battery positive. One feeds ECM power relay, the other feeds Actuator relay. The Actuator relay feeds the fan circuit, EGR, and MAF/IAT sensor on the pins you described having .14vt. Both relays are controlled by... Login to read more.