Fuel System Condenser
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 Nissan Xterra, 2003 Nissan Sentra, 2003 Nissan Pathfinder, 2003 Nissan Murano, and 2003 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition off. Disconnect 2-pin harness connector. Check resistance between condenser (+) and (-) pins. Resistance should be 1 megohm or more at 77°F (25°C).