Well, I got it out far enough to take a look at it, but the lower panel seems still to be stuck at the left side, even after I took out 5 screws and a sixth that connects the black plastic panel to it. A look through it reveals this:
I assume that is the fan motor.
Suginami, you can also see it from the glovebox behind the black plastic hose, but it seems to be better to get to from the lower panel.
Turbodiesel, do you just pull or is there a twist to it?