Check Select Unlock Relay Circuit

WARNING: This page is about a different car, the 2008 Infiniti FX45 and 2008 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK SELECT UNLOCK CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM, rear door lock actuator (LH and RH), and passenger side select unlock relay connector.
3. Check continuity between BCM connector M4 terminal 50 and passenger side select unlock relay connector M30 terminal 4.
  50 (PU) - 4 (PU) : Continuity should exist.
4. Check continuity between passenger side select unlock relay connector M30 terminal 4 and ground.
  4 (PU) - Ground : Continuity should not exist.
  
  Fig 1: Identifying Continuity Between Passenger Side Select Unlock Relay Connector M30 Terminal 4 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
5. Check continuity between passenger side select unlock relay connector M30 terminal 3 and rear door lock actuator connector D52 (LH), D72 (RH) terminal 3.
  3 (PU) - 3 (PU) : Continuity should exist.
6. Check continuity between passenger side unlock relay connector M30 terminal 3 and ground.
  3 (PU) - Ground : Continuity should not exist.
  
  Fig 2: Identifying Continuity Between Passenger Side Unlock Relay Connector M30 Terminal 3 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: Check passenger side select unlock relay.

NG: Repair or replace harness.