WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
Check circuit continuity between terminals by supplying 12 volts and ground to coil side terminals of relays.
Fig 1: Checking Circuit Continuity Between Terminals 12 Volts And Ground To Coil Side Terminals Of Relays