Third From Texas
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Yeah, I'd love to find the actual schematic for the A1R controller.I believe they all use the same connector, i think the difference lies in which pin in the connector receives power, which determines how the controller is supposed to behave. Had this discussion a long while back with someone and we discovered different power on different pins…
Yes, Christians arduino based controller should work on any truck, same as the manual approach, as the original controllers used the same PCU control and pressure sensor pinouts on that cannon plug H is 28V, F is ground. R, B & C(to F) are the 3 solenoids. b,c & j are the PCU pressure sensor Lines. T is the wet tank pressure switch. If gives a path to ground when the tank is over 117PSI, and opens that ground path when the tank goes below 89…Not sure this helps with the discussion but I have a0 truck. I purchased a black controller ( don’t have the part number handy) and it did work in my truck but the pressures were off. Hwy was about 80psi with stock pressures sensor. The worst part was the overspeed would kick on at around 35 mph in hwy. even lower speed at lower pressure settings. This is why I went with Christian’s solution.
Point here is the newer controller did work with my old truck so I would guess the opposite would be true too. Since Christian’s controller is customizable and doesn’t read the speed sensor I would think it would work on any of these trucks. But I’m guessing.
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Thats what they say. Contact @Plasa.So, are these aftermarket controllers available??
Very limited supply, based on his time. I heard the price is now 5000 large grade A eggs and 60 gallons of Milk. Ship to Italy. Pack well.So, are these aftermarket controllers available??
I'm interested in one, were these confirmed to work with A1R trucks?
You shared your code with me once upon a time and sadly I don’t remember the specifics of your programming. I have 2 questions after helping a few people resolve ctis issues.Yes, they work also on A1R because no connection to the can bus is needed. The CTIS is almost isolated from the rest, except the speed sensor signal. But that I do not use.
I also rebuild the controller to be more failure save against electrical issues. Plus it now have 5 presets instead of 4. It have the 4 original pressures plus a new highway pressure. Of course all 5 presets can be changed and put custom ones.
Unfortunately the old ecu isn't upgradable because I significantly change the electronic parts. It's almost completely redesigned.
Christian
You shared your code with me once upon a time and sadly I don’t remember the specifics of your programming. I have 2 questions after helping a few people resolve ctis issues.
1. Are you using the wet tank pressure switch input?
2. How hard would it be to invert its logic input to your controller, to allow for the use of a very common $10 electric air compressor control switch(closes at 90psi, opens at 120), vis the very expensive one that our trucks came with, which closes at ~120, and opens ~90?
That was the point of the question, a switch that closes at 120 and opens at 90 is not all that easy to find, and the original CTIS wet tank switches are obnoxiously expensive.
how hard would it be to invert that logic, as a close at 90, open at 120 air compressor control switch is a very common $10 part on amazon...