Well, it looks like I'll have to get to the "recirc air switchover valve" to see if the problem is with the valve itself or the connection between the valve and the air flap.

Looking at the procedure to access the valve, I'm not sure if the "lower instrument panel (right)" can be removed without following the entire procedure starting on page 23-149 of the service manual and removing the top section of the instrument panel as directed as part of the process of removing the glove compartment for access to the valve.

Anyone know for sure?

- Bill