Pcm Specific Input Codes: Notes
WARNING: This page is about a different car, the 1995 Cadillac Seville. However, it is still accessible from the selected car via links, so may be relevant.
PCM input selections provide testing of inputs to PCM. Input status is shown on display as HI or LO. Input test status is shown as "0" until PCM sees a transition in state of switch; status then changes from "0" to "X", indicating test has been passed.