If spn 4356/fmi 5 and spn 4354/fmi 5 are present, repair open between pin 9 of the.

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.

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You most certainly have a rubbed or corroded wire or bad connection somewhere between.

My voltage across the.

Webthis diagnostic is typically line heater 3 open circuit.

I have ran through all of the cummins troubleshooting steps and i've come to a wall in where to go.

Check for multiple codes.

Diesel exhaust fluid (def) line heaters are internal of the def lines.

Check for multiple codes.

Diesel exhaust fluid (def) line heaters are internal of the def lines.

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