WARNING: This page is about a different car, the 2004 Dodge Intrepid, 2004 Chrysler Intrepid, 2004 Chrysler Concorde, and 2004 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
The PCV system has a heat exchanger in the PCV hose that works with the cooling system of the vehicle (Fig 1
) or (Fig 2
).