Should 9-pin data port have 2 pins missing?

[TheHubbardBus]

Getting ready to pull the trigger on a Bluefire and/or Scan Gauge.
Our bus appears to have a 9-pin connector, but 2 of the pins are missing.
Any issues I should be concerned with? Why are these pins missing?


For reference, a pic. Not from our bus but this is what ours looks like. Note the two missing pins in 3-o-clock & 5-o-clock positions.

[TheHubbardBus]

Guess I'll answer my own question that I should have answered myself before asking ...

Looks like those are "OEM-specific" optional pins.

FWIW... Ordered a bluefire adapter 15 minutes ago. 5 minutes ago they emailed me telling me it was shipping today. If the product's anything like the service I anticipate being very happy.

https://bluefire-llc.com/store

[cadillackid]

they are pins D and C.. is this an older bus with a J1708 engine? (cummins 24 valve, T444E,DT466E) and a non electronic transmission? or old MD3060?

D and C are J1939 data pins... J1939 is used on WTEC-III ( mid 98 3060's and on allison 1000 / 2000 series transmissions. . and on the later engines (Maxxforce and later CAT)..

[TheHubbardBus]

Originally Posted by cadillackid

they are pins D and C.. is this an older bus with a J1708 engine? (cummins 24 valve, T444E,DT466E) and a non electronic transmission? or old MD3060?

2003 t444e, allison 2000.

I need to look & see what pins they are for sure. I just assumed they were the same in the pic I hijacked above (from another poster here), but I can't say for sure at the moment.

[cadillackid]

yeah look at how the Notch is pointed.. then you can match them up.. the one pictured looks like a 98.5-up international that had an AT545 / MT643 (or stick) trans.. they started using the 9 pin connectors then as the WTEC-III MD3060 and then in late 00 the allison 1000 / 2000 came along.. all of those transmissions use J1939 but the engine is still J1708. the old 6 pin connector only handled J1708, the 9 pin Spec handles both J1939 and J1708 in one connector.. the 2 pins I would GUESS are missing would be H and J which one of them is a euro-standard K-line (used by webasto on some of their models) and like you say OEM specific.



the 9 pin Bluefire is capable of both protocols so you can pick and choose what you want it to grab data from. the bluefire software lacks a bit on transmission stuff ( you can get the android or windows source and add your own parameters.. ive done it and it isnt too hard if you can write code.)

[fo4imtippin]

Just wanted to add that i had the same conundrom. I have only 4/9 pins which means i only have J1708 pins. Whats weird is i still get transmission data from the WTEC 3.

https://www.skoolie.net/forums/f39/9...tch-38760.html