Inhibitor Switch: Notes
WARNING: This page is about a different car, the 2004 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
Inhibitor switch allows back-up lights to turn on when gear selector lever is in "R" position, and allows starter to operate when in "P" or "N" position. Inhibitor switch supplies input signal for each range and turns on corresponding range light on instrument panel.