2. Check Harness Continuity

1. Turn ignition switch OFF.
2. Disconnect auto trunk control unit and trunk lid close switch connector.
3. Check continuity between auto trunk control unit connector B110 terminal 8 and trunk lid close switch connector B309 terminal 2.
   1. 8 (W/R) - 2 (W/R) : Continuity should exist  .
4. Check continuity between auto trunk control unit connector B110 terminal 8 and ground.
   1. 8 (W/R) - Ground : Continuity should not exist  .

Fig 1: Checking Harness Continuity

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

OK or NG 

1. OK : GO TO 3.
2. NG : Repair or replace harness between auto trunk control unit and trunk lid close switch.