Diagnostic Procedure
WARNING: This page is about a different car, the 2002 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
Connect scan tool to Data Link Connector (DLC). See Figure. Turn ignition on. Using scan tool, clear DTCs. Perform DTC CONFIRMATION TEST again. If first trip DTC set, Replace ECM. Program ECM. See COMPUTER RELEARN PROCEDURES article. If first trip DTC is not set, test is complete.