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Test R: Service Engine Soon Indicator Inoperative

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.
NOTE: After making any repairs, clear DTCs and perform self-test.
  1. Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below center of instrument panel, right of steering column. Turn ignition switch to RUN position. Select instrument cluster INDICATOR LIGHT CONTROL active command. Trigger active command MIL ON. If SERVICE ENGINE SOON indicator does not illuminate, go to next step. If SERVICE ENGINE SOON indicator illuminates, repair as necessary. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
  2. Disconnect all instrument cluster harness connectors. Inspect harness connectors for corrosion and pushed out pins. Connect all instrument cluster harness connectors, ensuring they are connected correctly. Operate system and verify if concern is still present. If concern is still present, replace instrument cluster. See INSTRUMENT CLUSTER  under REMOVAL & INSTALLATION. If concern is not present, system is operating correctly at this time. Clear DTCs and perform self-test.
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