DTC Confirmation Test
WARNING: This page is about a different car, the 2002 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition on. Select DATA MONITOR mode with scan tool. Wait at least 5 seconds. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE . If 1st trip DTC is not detected, system is okay at this time.