Fuel Tank Temperature Sensor

Remove fuel level sensor unit.
Check resistance between fuel level sensor unit and fuel pump terminals 4 and 5 by heating with hot water or heat gun as shown in Fig 1 .

Fig 1: Testing Fuel Level Sensor Unit
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Fuel Level Sensor Unit Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.