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Found your original thread: https://www.steelsoldiers.com/showthread.php?181972-CTIS-and-Arduino/page7 Looks simple enough. I wonder how many people would be interested in a new/ updated controller? I think it would be cool to have each "mode" button be user programable and have a read out of...

Good to know. It has to be more reliable.

My guess is they are giving you pricing to redesign it. I’m sure it’s obsolete at this point. Picked on NOS one on eBay for $500. I’ve been thinking of designing one to run on an arduino if there is enough interest. Sent from my iPhone using Tapatalk

After all that it was the computer after all. Got a new one and it works perfectly. Inflates and deflates.

Ran the PCU on shop air. Still have the same fault. Solutions still on the "To Do" List - Have a new CTIS controller on the way. Will swap it in and see if that is the issue - Disassemble the PCU solenoids and clean again Last resort - Build a manual PCU with 24v solenoids - Run it with an...

I did not. Sounds like that is tomorrows project.

Shop air 120-130psi but the wet tank pressure switch was jumped out.

Each one reads just about 60 ohms.

They were all a little above 60 ohms

They all show the correct ohms and look clean. By check do you mean hook them to a power supply and see if they function? I was hesitant to remove them from the manifold block.

Supplier: Amazon Part: AUTEX Pressure Transducer/Sender/Sensor 150/200 Psi Stainless Steel Compatible With Oil, Fuel, Air, Water (150 Psi) Update: Pressurized CTIS system after PCU. Let the shop air compressor and the system equalize. Found a leak from the front dump valve. Between the fuel...

Ordered. Thanks for the idea

Ronmar thanks for the great info! Ill by-pass the PCU tomorrow as you suggested. I've come across your video before. That is my last resort if I cannot get the system to work as designed. Will repost the with results.

UPDATE #1 Problem solved. Computer was bad. Replaced with a new one. Steps listed throug the post are still helpful first steps. UPDATE #2 CTIS controllers for $295 Wish I had found this earlier...