Something in my sedan's cabin air system smells bad (organic bad, not mechanical bad), even after changing the cabin air filter.
I have a bore scope, vacuum, compressor, and hoses sufficient that I think I could find and clean out the source. But I have no idea what the layout of the system is and how it is configured in each mode – i.e., what position each damper would be in, what dimensions I'm likely to encounter as I snake through the ducts, and where each of the HVAC components sit. I'm not even sure where all of the intakes and outlets are. (I also understand that just opening the entire system is a four-figure project. Given the tools I have available that's probably unnecessary.)
Where can I find a detailed schematic of the HVAC system for a late-model sedan?
And are they generally similar enough between makes and models that one example would be enough to give me an idea of where components, dampers, and intakes are?
Or do they vary significantly enough that I would need a model-specific drawing?