Before you go any further, obtain a set of Service manuals. You can buy them from
www.helminc.com
A Tech 2 is little more than a fancy toy without the GM service documentation. The screen you showed indicates a (DTC) fault, but you already knew you had a problem.
There are three things you need to troubleshoot the Folding Top, and you already have one of them. The next two (test setup and system knowledge) require the Service manual. The Service manual explains the testing and troubleshooting sequence, and lists what Tech 2 test tree screens are needed to obtain more test results. The Service manual has a section for each major component/system, that explains in great detail how it works and what sensors are used to detect a fault when it isn't. Are you starting to see a theme here? You need the Service manual to understand how the vehicle works. All the Tech 2 does is tell you what sensor readings were flagged. You have to know the exact sequence of the Folding Top operation to understand which sensor reading is requires for each step in the movement cycle to complete before the next can begin. The Service manual explains it.
With that being said, your basic scan won't tell you much --as you've learned. You need to look into the Folding Top system sensor readings, to understand what isn't working. That requires the Tech 2 peer into the Folding Top Control Module. All of the sensor inputs the Folding Top needs to function are reported to this module, and available to read and compare with a Tech 2. You need to navigate to the Body and Acc<Roof<Body and Acc<Folding Top Module<Inputs screen to read the system status. You want to write all of these values down and compare them whenever there's a problem. You'll find the faulty position sensor within thirty seconds. You can operate the folding top to watch the sensors update in real time and note which sensor is out of tolerance too. I keep a folded copy of my Folding Top values right on the page in the manual where the Folding Top Relearn procedure resides, and it's the first thing I check when there's any kind of malfunction. The second thing I check is the financial level indicator in my wallet.
CCC
