Check Back Door Switch

Check voltage between BCM connector and ground.

Fig 1: Identifying Voltage Between BCM Connector And Ground

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

OK or NG 

OK : Back door switch circuit is OK.

NG : GO TO 2.

1. Turn ignition switch OFF.
2. Disconnect BCM and back door closure motor connector.
3. Check continuity between BCM connector B14 terminal 58 and back door closure motor connector D109 terminal 7.

   58 (L) - 7 (L) : Continuity should exist. 

4. Check continuity between BCM connector B14 terminal 58 and ground.

   58 (L) - Ground : Continuity should not exist. 

   Fig 2: Identifying Continuity Between BCM Connector B14 Terminal 58 And Ground

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

OK or NG 

OK : GO TO 3.

NG : Repair or replace harness.

Check continuity between back door closure motor connector D109 terminal 8 and ground.

8 (B) - Ground : Continuity should exist. 

OK or NG 

OK : GO TO 4.

NG : Repair or replace harness.

Fig 3: Identifying Continuity Between Back Door Closure Motor Connector D109 Terminal 8 And Ground

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

Check continuity between back door closure motor D109 terminals 7 and 8.

OK or NG 

OK : GO TO 5.

NG : Replace back door closure motor.

Fig 4: Identifying Continuity Between Back Door Closure Motor D109 Terminals 7 And 8

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

1. Connect BCM connector.
2. Check voltage between BCM connector and ground.

   58 (L) - Ground : Approx. 9V 

OK or NG 

OK : Check condition of harness and connector.

NG : Replace BCM.

Fig 5: Identifying Voltage Between BCM Connector And Ground

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