Toyota Prius 2010 Repair Manual page 29

Functions of Main Dampers
Control
Operation Position
Damper
Air Inlet FRESH
Control
RECIRCULATION
Damper
Air Mix
MAX COLD to MAX HOT
Control
Temperature Setting
Damper
Air Outlet
Control
Damper
2010 Toyota Prius
DEF
FOOT/DEF
FOOT
Damper
Position
A Allows fresh air to enter.
B Causes internal air to recirculate.
Varies the mixture ratio of warm air and cool air in
C - D order to regulate the temperature continuously between
hot and cold.
Defrosts the windshield through the center defroster,
J, E
side defroster and side registers.
Defrosts the windshield through the center defroster,
J, F side defrosters, side registers while air is also blown
out from the front and rear footwell register ducts.
Air blows out of the front and rear footwell register
J, H ducts, and side registers. In addition, air blows out
slightly from the center defroster and side defrosters.
Operation
Repair Manual