Air ducts
When set to windscreen demist I have a moderate flow of air coming from the centre of the windscreen vent outlet, but virtually none at either side. I haven't noticed a reduction in the amount of air noise, though, since it was working properly. Having read this thread (and a few others) I'm guessing a duct has disconnected or a seal has gone, so most of the air is going elsewhere.
I've been trying without success to find a parts diagram for the vents and ducts so I know what to expect. Does such a thing exist? I'd like to understand the routing of the ducts and, in particular, how many connections there are to the windscreen vent(s): is it just a single duct to the centre or are there several?
Also, if I take out the heater control unit will I be able to see anything useful (so I can check what's going on before launching into removing the dash)?
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