All Interior Room Lamps Do Not Operate

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.

CHECK POWER SUPPLY CIRCUIT
1. All interior room lamp switches are OFF.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector M20 terminal 56 (R/G) and ground.
  - 56 (R/G) - Ground: Battery voltage should exist.
OK or NG
- OK: Repair harness or connector. In a case of making a short circuit, be sure to disconnect battery negative cable after repairing harness, and then reconnect.
- NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".
Fig 1: Checking Voltage Between BCM Harness Connector M20 Terminal 56 (R/G) And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.