2. Check Fuel Tank Temperature Sensor Power Supply Circuit

WARNING: This page is about a different car, the 2004 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect "fuel level sensor unit and fuel pump" harness connector.
Turn ignition switch ON.

Fig 1: Checking Fuel Tank Temperature Sensor Power Supply Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.
Check voltage between "fuel level sensor unit and fuel pump" terminal 4 and ground with CONSULT-II or tester.

Fig 2: Checking Fuel Tank Temperature Sensor Power Supply Circuit
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Voltage: Approximately 5V

OK or NG

OK: GO TO 4 .

NG: GO TO 3.