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 light bulb. Check for faulty circuit (White/Black wire) between ceiling light and gauge assembly harness connector terminal D1. See WIRING DIAGRAMS  .