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 2002 IC bus T444E ECM pinout
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earl1412
Senior Member

101 Posts

Posted - 04/08/2015 :  07:35:29 AM  Show Profile  Reply with Quote
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

RonF
Top Member

867 Posts

Posted - 04/08/2015 :  10:42:54 AM  Show Profile  Reply with Quote
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.

US Army retired CMBT
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earl1412
Senior Member

101 Posts

Posted - 04/09/2015 :  09:18:30 AM  Show Profile  Reply with Quote
Thank you Ron, I ran a 2.3 ohm resistor to ground and it worked fine.
earl1412
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