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+--- Thread: N14 Celect Plus PTO mode question (/showthread.php?tid=10309)
N14 Celect Plus PTO mode question - Torqueturn - 09-09-2025
Hi all,
It is a bit of a long story so I will try and condense it without rambling on too much.
I appreciate any info or suggestions, I attached a print screen of quickserve description and what insite pto setting shows off of old engine. The new celect plus has same options.
Gist is:
-Removed a 435 Celect from a 94 International and swapped in a 520 Celect Plus because bigger transfer case driven pumps and compressor were installed
-Pin outs on OEM side are the same except the deutsche connector
-Original Celect engine would allow you to Increment up and down the RPM in PTO mode like all other trucks and this is needed for different loads
-On both ECMs insite only allows you to set 2 values for the set/resume PTO settings
-You can see live data of all cruise control switches when you select them. Copied as many settings as I could to Celect Plus and there is no Increment idle setting or options in either.
-PTO settings work as they should according to how they are set (If "set switch" is set for 1100RPM you can toggle switch and it idles up to 1100, if resume is set for 1800, you toggle it and it idles up to 1800 RPM)
This won't work for the application though, because they need to fine tune RPM according to conditions.
The reason I know Celect ECM works, is because we had a throttle code that troubleshot down to "Replace ECM" for Celect Plus
Sent it out to get repaired and ran Celect harness over old one so I could put old Celect ECM on to move rig while finishing a few things and the idle increments worked as well as rear switch Tee'd into circuit
After getting Celect Plus ECM back (and a recon one we ordered) tried both just in case and it was the same PTO situation. Goes to 2 values programmed but not able to increment the PTO up slowly.
Swapped Celect ecm back over and you can increment the idle up and down using cruise switches. Before anyone says anything, yes the harness' are keyed different. I wasn't going to so someone else shaved the keys so the connectors would fit.
Any advice is appreciated because this is a tricky situation, I hope I didn't forget any key info any questions about things I might have left out, please ask.
Thanks
RE: N14 Celect Plus PTO mode question - tree98 - 09-09-2025
Sounds like your trying to make an option work that isn't available in the program for the engine you put in the truck. Honestly im kinda confused as to what you're actually asking.
RE: N14 Celect Plus PTO mode question - Torqueturn - 09-09-2025
(09-09-2025 )tree98 Wrote: Sounds like your trying to make an option work that isn't available in the program for the engine you put in the truck. Honestly im kinda confused as to what you're actually asking.
Why does one ECM allow it to increment up even though the PTO parameters have the same option?
I called nearest cummins shop and emailed so im waiting to hear back
RE: N14 Celect Plus PTO mode question - Truckdriven - 09-09-2025
Did you try a long press on the cruise up and or down switch? All the ISX ones have the same preset positions but you can change it incrementally by holding the switch till you reach desired rpm, There is a ramp rate or rate of change setting for how fast rpms change while holding the switch, too fast and it will be very difficult to fine tune
RE: N14 Celect Plus PTO mode question - DVT873 - Yesterday
When the N14 first came out the service tool for it was Cummins Echek. A handheld device. This was before INSITE. I have been told by old Cummins guys that on an N14 INSITE may not see everything that Echek will. I have also been warned that INSITE can create problems in the Celect system. I don't know if that is true. I do know from a truck several years ago that some of the code descriptions are different when looked up in an Echek manual.
A quick Google search shows some new and used Echek systems and some manuals only. Maybe get one of the manuals and see what it says. Somewhere at work I have some International Electronic Engine Manuals the came out in the early 90's covering CAT, Cummins, and Detroit. I can look at those the first of the week, but IIRC, they mostly covered wiring. In way better detail and illustrations than we get today!