Check Trunk Open Signal

1. Remove electronic key from ignition key cylinder.
2. Check voltage between BCM harness connector M4 terminal 109 (LG) and body ground.

Fig 1: BCM Harness Connector M4 Terminal 109 (LG) And Body Ground Voltage Table

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking BCM Output Signal

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG? 

1. OK >> BCM output signal (Trunk open signal) is OK.
2. NG >> Replace BCM.