Test C: Not All Segments Of Display Illuminate
WARNING: This page is about a different car, the 2002 Lincoln Navigator and 2002 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition switch to OFF position. Perform message center self-test. See SELF-DIAGNOSTICS . Cycle through self-test procedure until ALL SEGMENTS DISPLAYED test is reached. Cycle through all segments displayed test until all displays have been seen. Display should show OFF, GRID 1, GRID 2, and GRID 3. If all segments illuminate as specified, system is okay at this time. If all segments do not illuminate as specified, replace message center and test system operation. See MESSAGE CENTER under REMOVAL & INSTALLATION.