Key On Warning System

When the ignition key is turned from "II" to "O" position but not removed, voltage is applied through fuse No. 34 (10A) in the main fuse box and the closed ignition key switch to the key-on beeper in the integrated control unit. When you open the drivers door, the beeper circuit senses ground through the closed door switch. With voltage at terminal No. A10 and ground at terminal No. A7, the beeper sounds. See WIRING DIAGRAMS  .