Transfer Shift Relay

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition switch "OFF". (Stay for at least 5 seconds.)
Remove transfer shift high relay and transfer shift low relay. Refer to "LOCATION OF ELECTRICAL PARTS ".
Apply 12V direct current between transfer shift relay terminals 1 and 2.
Check continuity between relay terminals 3 and 4, 3 and 5.

Fig 1: Transfer Shift Relay Terminals 3 And 4, 3 And 5 Continuity Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Continuity Between Relay Terminals 3 And 4, 3 And 5
Courtesy of NISSAN MOTOR CO., U.S.A.
If NG, replace transfer shift relay.