5. Check FPCM Ground Circuit-II For Open And Short

1. Disconnect "fuel level sensor unit and fuel pump" harness connector.
   Fig 1: Identifying Fuel Level Sensor Unit And Fuel Pump Harness Connector

   Courtesy of NISSAN MOTOR CO., U.S.A.
2. Disconnect dropping resistor harness connector.
3. Check harness continuity between the following;

   "fuel level sensor unit and fuel pump" terminal 1 and dropping resistor terminal 2,

   FPCM terminal 4 and dropping resister terminal 2. Refer to WIRING DIAGRAM .

   Continuity should exist. 

4. Check harness continuity between the following;

   FPCM terminal 4 and ground,

   "fuel level sensor and fuel pump" terminal 1 and ground. Refer to WIRING DIAGRAM .

   Continuity should not exist. 

5. Also check harness for short to power.

OK or NG 

1. OK: GO TO 7. CHECK FPCM INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT .
2. NG: GO TO 6.