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 the figure.

Fig 1: Temperature- Resistance Specifications (P0181)
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Resistance Between Fuel Level Sensor Unit And Fuel Pump Terminals (P0181)
Courtesy of NISSAN MOTOR CO., U.S.A.