2. Check Harness Continuity

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.
   1. 58 (L) - 7 (L) : Continuity should exist. 
4. Check continuity between BCM connector B14 terminal 58 and ground.
   1. 58 (L) - Ground : Continuity should not exist. 
      Fig 1: Checking Harness Continuity

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

OK or NG

OK : GO TO 3.

NG : Repair or replace harness.