Test I: Door Ajar Indicator Inoperative/Erratic

Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Turn ignition switch to RUN position. Using NGS tester, retrieve and record continuous Front Electronic Module (FEM) and Rear Electronic Module (REM) DTCs. Clear FEM and REM DTCs. Using NGS tester, perform FEM and REM self-test. If no FEM and REM DTCs are retrieved, go to next step. If any FEM or REM DTCs are retrieved, repair code related problems. See FRONT ELECTRONIC MODULE DTC INDEX and/or REAR ELECTRONIC MODULE DTC INDEX table under SELF-DIAGNOSTIC SYSTEM.
Using NGS tester, select instrument cluster active command WARNING LAMPS AND CHIMES. Trigger ALL LAMPS ON. If door ajar indicator illuminates, repair courtesy light malfunction. See AUTOLAMP SYSTEMS - LS article. If door ajar indicator does not illuminate, replace instrument cluster.