Freightliner Def Line Heater Location
You most certainly have a rubbed or corroded wire or bad connection somewhere between. Webi have a code for heater line 1 open circuit. Diesel exhaust fluid (def) line heaters are internal of the def lines. Webjan 4, 2022 · ohm test and load test the wiring from the ecm to the def dosing unit. The heater electrical connectors are located near the def line couplings.
Webthis diagnostic is typically line heater 3 open circuit. If spn 4356/fmi 5 and spn 4354/fmi 5 are present, repair open between pin 9 of the. Check for multiple codes. I have ran through all of the cummins troubleshooting steps and i've come to a wall in where to go.
