Diesel Emissions Fluid (DEF) System: Locations

SCR System Controls Component Views






Legend
(1) Diesel exhaust fluid (DEF) control module
(2) DEF Tank
(3) DEF Heater Valve
(4) DEF Supply Pump
(5) DEF Control Module






Legend
(1) DEF Pressure Hose (to DEF Injector)
(2) DEF Backflow Hose
(3) DEF Suction Hose
(4) Engine Coolant Hose (DEF Supply Pump to DEF Injector
(5) Vent Hose
(6) Engine Coolant Hose (DEF Tank to DEF Supply Pump)
(7) Engine Coolant Hose (DEF Heater Valve to DEF Tank)
(8) Engine Coolant Hose (Engine to DEF Heater Valve)






Legend
(1) Exhaust Gas Temperature (EGT) Sensor 3
(2) SCR Catalyst
(3) NOx Sensor 2
(4) DEF Injector
(5) NOx Sensor 1