WebUnplug your lower ECM connector and your DEF pump and check for wire continuity, pin to pin short, pin the ground short and load test your wires while shaking your harness. If … Webquantities of diesel exhaust fluid (DEF) are injected into the exhaust upstream of a catalyst, where it vaporizes and decomposes to form ammonia and carbon dioxide. The ammonia (NH3) is the desired product which in conjunction to the SCR catalyst, converts the NOx to harmless nitrogen (N2) and water (H2O).
DEF pump diagnostics Vehicle Service Pros
WebLooks like the DEF pump on a Cummins, there’s a TSB out I believe for this problem, def leaks out around the pins and corrodes the connector and/or harness. Reply ... I think what saved me was the wire insulation gave out at the chassis harness connector. That turned it into an external leak preventing it from traveling as far or as fast ... WebApr 4, 2024 · Disconnect the DEF dosing valve wiring harness connector. Inspect the dosing valve connector terminals for spread or corroded pins. If the pins are spread or corroded, repair as necessary. If connector shows no signs of damage, Go to step 4. Turn the ignition ON (key ON, engine OFF). slumberkins resources
Understanding diesel after-treatment systems and how to …
WebBe the first to review this product. $149.70. Genuine Volvo Truck Wiring Harness, DEF Tank 21951843. Qty. Add to Cart. Details. Extension, Urea Tank. Replaces Volvo 21798861, 21372179. More Information. WebŁCummins ISX SCR wiring - DEF Harness ŁCummins ISX SCR wiring - Aftertreatment Harness ŁCummins ISX SCR - Connector Composites WARRANTY INFORMATION … WebAug 19, 2024 · If it failed that quickly they probably got DEF in the wiring harness connector when they replaced it. If they did not remove the tank and drain it before removing the pump, there is almost no way to remove the pump with the tank in the truck and not shower the wiring harness connector with DEF. slumberkins promo code