Fuel Tank Temperature Sensor

WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 2: Checking Resistance Between Fuel Level Sensor Unit & Fuel Pump Terminals 4 & 5 By Heating With Hot Water
Courtesy of NISSAN MOTOR CO., U.S.A.