Sub-Cool System Description
WARNING: This page is about a different car, the 2003 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.
In the sub-cool A/C system (condenser integrated with receiver / dryer), the condenser divided the inside into the condensation part and the sub-cooler part and located the receiver / dryer between those. In the receiver / dryer, refrigerant is separated in vapor refrigerant and liquid refrigerant. And only the liquid refrigerant is delivered to the sub-cooler part of the condenser. The refrigerant is supercooled by the sub-cooler part of the condenser.