my TCH has plasmacluster when does this operate and can this be operated manually?

If you're talking about the "air freshener" there's no control for it.

It is on whenever you have the climate controls on. It is located within the driver-side vent airway.

Thanks for correcting me there. I forgot to mention that part. I was curious about that when I first got mine. I am kind of becoming addicted to finding out how everything operates on this vehicle now.

And I pray I did not give misinformation ... as my mind fails I need to start adding qualifiers like "I think."