Trunk Open Signal Check

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

Fig 1: Connector Terminals Reference Chart

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

OK or NG 

1. OK: TRUNK open signal is OK.
2. NG: GO TO 2.

Fig 2: Checking Voltage Between Auto Trunk Control Unit Connector B110 Terminal 5 And Ground

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

1. Turn ignition switch OFF.
2. Disconnect BCM and auto trunk control unit connector.
3. Check continuity between BCM connector M4 terminal 1 and auto trunk control unit connector B110 terminal 5.
   1. 1 (G/Y) - 5 (G/Y): Continuity should exist. 
4. Check continuity between BCM connector M4 terminal 1 and ground.
   1. 1 (G/Y) - Ground: Continuity should not exist. 

OK or NG 

1. OK: GO TO 3.
2. NG: Repair or replace harness.

Fig 3: Checking Harness Continuity

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

1. Connect auto trunk control unit connector.
2. 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 4: Checking Voltage Between Auto Trunk Control Unit Connector B110 Terminal 5 And Ground

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