Ceiling Light Does Not Illuminate With Door Open (Switch In Middle Position)

Check for blown fuse No. 37 (7.5-amp) in underhood fuse/relay block. Perform SAFETY INDICATOR LIGHTS INPUT TEST  under SYSTEM TESTS. Check for faulty ceiling (dome) light bulb. Check for faulty White/Black wire between dome light and gauge assembly harness connector terminal D1. See WIRING DIAGRAMS  .