Check Fuel Level Sensor Unit

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

For removal, refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY .
Check the resistance between terminals 5 and 6.

Fig 1: Checking Resistance Between Fuel Level Sensor Unit Terminals 5 And 6
Courtesy of NISSAN MOTOR CO., U.S.A.

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