P21C4-(Diesel Exhaust Fluid) REDUCTANT Line Heater Relay Control Circuit High: Notes
WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Diesel Exhaust Fluid Reductant Line Heater Relay Control Circuit Wiring Diagram
Courtesy of CHRYSLER LLC
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article
.