Does anyone have a schematic pin out for IC bus with a T444E v8? I've called my dealership and his info goes back to 2004 and doesn't include this system. I'm experiencing a grounding issue for the glow plug relay and it's controlled from the ECM. I have no active or inactive DTC's, and the relay is new. Any help would be appreciated. I can PM you if you can help me. earl1412
I have ran into this problem when I worked on the 444's and if you have ISIS you and view the wiring diagrams. What I ended up doing on one if I recall correctly was to run a new ground wire from the relay stud to a ground point on the engine. Make sure you have the correct relay, NAPA part number is GPR110. I don't know the IC number.