2. Check Combination Flasher Unit Circuit

1. Disconnect BCM and combination flasher unit connector.
2. Check continuity between BCM connector M4 terminal 7 (W/L) and combination flasher unit connector M91 terminal 6 (W/L).
   1. 7 (W/L) - 6 (W/L) : Continuity should exist  .
3. Check continuity between BCM connector M4 terminal 7 (W/L) and ground.
   1. 7 (W/L) - Ground : Continuity should not exist  .

OK or NG 

1. OK: Replace BCM.
2. NG: Repair or replace harness.

Fig 1: Checking Combination Flasher Unit Circuit

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