3. Check Control Unit Output

Push unlock button of keyfob with key removed and all doors closed, and check voltage across smart entrance control unit connector M111 terminal 31 (R/B) and ground.

Fig 1: Checking Control Unit Output

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

OK or NG 

1. OK: Check system again.
2. NG: Replace smart entrance control unit.