2NKHHJ7X9HM164915 W/Cummins ISL9 ESN 74026310. I need a wiring diagram for aftertreatment. On the KW side. Has a CEL light on and an active Cummins code of 3567 "Aftertreatment 1 Diesel Exhaust Fluid Dosinf Valve 1 Circuit - Current Below Normal or Open Circui... Login to read more.