Medium and Heavy Trucks
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Hi, my name is***** for the request. What engine model is in your truck? DT466E ? Any fault codes?
Thanks for the info. That means you have active codes. click on this link for instructions and let me know what codes you have.
Here is what I have for schematics.
Ok sounds good. We can post back and forth as needed as well. I have family visiting for the weekend and I log in periodically throughout the day for followups as I am able. Mostly evenings and late at night.
click this link and see PDF pages 34-35. There are starter relays and IGN relays out there which sounds like what you are referring to.
Sounds like you likely have a stuck faulty relay. Let me know
Test your power in and out of your IGN switch for a possible shorted IGN switch. check your fuses and relays in the main fuse panel and also look closely at the harness from the battery box to the ECM for corrosion and shorts. Let me know
Did you get this resolved?