Temperature Control Cable
WARNING: This page is about a different car, the 2001 Subaru Impreza and 2000 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
Place temperature control switch to full cold and mode selector switch to vent position. Set fresh/recirculated air control to recirculated air position. Install control cable to lever. While pushing outer cable, secure control cable with clip. See Fig 1.