3. Check Auto Trunk Control Unit Output Signal

Check voltage between auto trunk control unit connector B110 terminal 5 and ground.

1. 5 (G/Y) - Ground : Approx. 5V 

OK or NG 

1. OK : Check the condition of the harness and the connector.
2. NG : Replace auto trunk control unit.

Fig 1: Checking Auto Trunk Control Unit Output Signal

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