A/C Orifice Tube: Description
WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
The fixed orifice tube is installed in the liquid line between the outlet of the condenser and the inlet of the evaporator. The fixed orifice tube is located near the front end of the rear half of the two-piece liquid line. It is accessed for service by separating the tube fitting that joins the two halves of the liquid line.