Troubleshooting Bus Diesel DT466e No-Start

Troubleshooting a no-crank, no-start condition on a 2005-2007 DT466e School Bus, Party Bus, Skoolie

[@alfabeech]

Self-employed, but not a bus owner. Interesting info.

[@fred-s3j]

I do appreciate what you have offered here in this video, thank you.
I have a 2005 International IC CE300 school bus, My problem is this safety interlock system?? How do you bypass it completely?? Its a pain 😢
I figit with back door, then itll start, sometimes it will not.
I have pulled the relay out so it will not come up on the dash anymore. And those 2 seleniods are expendable i see too. just trying to get to the bottom of this.

[@thetslabus]

I've never tried bypassing it altogether. I couldn't even tell you if the circuit is triggered by voltage or ground.