Ignition switch short? No power...

Discussion in '6.9L IH & 7.3L IDI Diesels' started by saburai, May 16, 2018.

  1. saburai

    saburai Full Access Member

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    Hi gang! So we pulled up stakes from Florida and are heading north to the Catskills. We made it about 5 hours to a friend's house to set up camp for the night. Pulled in, shut the truck , unhook the RV jacked it up, and went to pull away. turned the key and nothing happened. No lights, no power anywhere. Move the Tilt column up and down and momentarily had power in the accessory position but then that quit too. Any ideas? Ignition switch linkage? For the ignition switch itself? Something else? With luck, I'll be able to fix it tomorrow. We've got to hit the road again soon... Any input would be greatly appreciated!
     
  2. towcat

    towcat Administrator Staff Member

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    does the key switch rotate like normal or does it spin freely?
     
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  3. laserjock

    laserjock Almost there... Supporting Member

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    It’s suspicious that you had power on accessory even for a moment. If memory serves, none of the actual power wires come up to the tilt. Towcat is spot on. It’s either the ignition switch down on the column or something broken in between most likely. Next thing to look at are the fusible link wires on the fender starter relay. All power for the truck originates there.
     
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  4. saburai

    saburai Full Access Member

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    Yes, it feels normal.

    I'll drop the column shortly and take a look.

    Thanks for the help guy's!
    Do you have any links to .pdf documents or any other resources that would show me the location of the fusible links? Also, a good graphic, exploded view of the steering column would be really helpful! I wish there was a complete shop manual available online... I have the whole Factory manual in PDF for my Jeep, it has been an invaluable resource.
     
  5. franklin2

    franklin2 Full Access Member

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    All the fusible links are out near the starter relay on the pass side inner fender. All the power for everything on the truck originates over there, and that where most all of the important fusible links reside.
     
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  6. chillman88

    chillman88 Supporting Member Supporting Member

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    Reach up on top of the column and feel for the actuator rod and see if it moves at all when you turn the key.
     
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  7. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    Make sure the grey connector halfway down the column hasn’t fallen apart or is loose.
     
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  8. saburai

    saburai Full Access Member

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    Thanks guys! Going out to drop the column now. I'll keep my eye on the phone for more information and advice:cheers:
     
  9. saburai

    saburai Full Access Member

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    So I'm outside at the truck poking around, looks like I'm going to get rained on as per usualo_O please excuse my electrical ignorance, but how does one test the fusible links without puncturing the wires? I truly like to avoid that! Also, can anyone recommend the proper, or a good diagnostic procedure, i.e. What order to test things? I'm pretty good mechanic but electrically I'm kind of an idiot:rolleyes: everything in the cab is dead, interior lights Etc, things that would normally be hot. I'm assuming that everything goes through the ignition switch? Thanks again everyone...
     
  10. 79jasper

    79jasper Chickenhawk

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    Well..... to avoid puncturing wire.... go from one end of the wire to the other end with your probes........

    Sent from my SM-G892A using Tapatalk
     
  11. saburai

    saburai Full Access Member

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    Found it! Thanks guys! It was a short in the primary battery cable. Time to replace that big bad one.
     
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  12. D_Fresh361

    D_Fresh361 Supporting Member Supporting Member

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    It's a great feeling finding the culprit!
     
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  13. saburai

    saburai Full Access Member

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    Yep, it always is!
     

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