Fuel Tank Temperature Sensor

WARNING: This page is about a different car, the 2004 Infiniti FX35. 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, see Fig 1, by heating with hot water or heat gun as shown in Fig 2.

Fig 1: Identifying FTT Sensor Testing Specifications

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

Fig 2: Testing Fuel Level Sensor Unit Resistance

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