First, what does "some wires that caught up in the forks when I was riding" mean? Something very strange is going on there and it tends to point at you.
Next, I was unaware of the K9 TPS adjustment procedure and am thoroughly unimpressed. The -C00 is checked with the engine running but to adjust it you must turn the bike off and perform some significant disassembly. Per the manual, you must lift the throttle body from the intake pipes to get to the TPS. The referenced procedure for lifting the TB involves eleven steps associated with removing it, including removing the cowling, air box, plus numerous connectors, hoses and clamps. For an E33 model you're additionally supposed to drain the tank! I strongly suspect that most of that is unnecessary for TPS adjustment but that's what the manual says. However it notably doesn't involve removing the TPS, only loosening the mounting/adjustment screw. You're then supposed to adjust it while in this state and reassemble to verify that it's correctly adjusted. Note that adjusting it requires turning the ignition on while in the disassembled state. This is probably the stupidest procedure that I've ever encountered from Suzuki. Or am I missing something?
I'm not sure about this but I think that the TPS slider mechanism is spring loaded and removing it has allowed it to rotate to a position where it won't mate with the throttle shaft. To get it to engage, look carefully at the shaft end and the TPS slider shaft. You probably have to rotate the TPS significantly from its original position to get them to mate. Once mated, you can position the TPS to where it belongs. So you probably created the problem by removing the TPS but I'm not unsympathetic, given the stupid design & adjustment procedure.
Aside from originally designing the bike so that all the disassembly was unnecessary, there has to be a much better way to adjust the TPS. I've believed for some time that it's possible to adjust it "dry" on my K6, i.e. with the engine off, and suspect that Suzuki adjusted it that way at the factory. It might involve measuring the sensor resistance but could also involve the use of the TPS test harness, something that is not mentioned in the K9 manual. That -C00 reading is just an indication of a voltage at the TPS. I have indications that -C00 corresponds to the TPS voltage being 1.12 to 1.14 V. No idea if this applies to K9.
