Check Trunk Open Signal

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

CHECK BCM OUTPUT SIGNAL
1. Remove electronic key from ignition key cylinder.
2. Check voltage between BCM connector M4 terminal 109 (Y/B) and ground.
  
  Fig 1: Checking BCM Output Signal (1 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Checking BCM Output Signal (2 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: BCM output single (trunk open signal) is OK.
2. NG: Replace BCM.