No communication from data port ??

[Gachris]

Scanner hooked up to the port but nothing . It's dead . Fuse to check ? Eyeballed all the fuses and they look fine . 93 f350 7.3 idi 4x4 e40d

 

[gandalf]

I think I answered this earlier today on FB. Same questioner? My answer wasn't complete, but ended with the same question.

Tell us more about the truck.

 

[cozinsky]

Have you tried cleaning the terminals inside the connector?

 

[Noiseydiesel]

All that scanner port will do is give you trans codes at best. If memory serves, the large port goes to the scanner and a power cable to the small port for the Snap-On Brick. Your antique truck does not have a PCM for engine data. Since you are after wiring diagrams, you might try alldatadiy.com and a few bucks will get you your diagram to troubleshoot.