Check Fuel Level Sensor Unit

WARNING: This page is about a different car, the 2003 Infiniti FX35. 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 fuel level sensor unit and fuel pump (main)

Check the resistance between terminals 2 and 5.

Fig 1: Checking Resistance Specifications Between Terminals 2 & 5
Courtesy of NISSAN MOTOR CO., U.S.A.
If the results of check is NG, check the fuel level sensor unit and fuel pump (main) harness.

Fig 2: Checking Fuel Level Sensor Unit, Fuel Filter & Fuel Pump Assembly
Courtesy of NISSAN MOTOR CO., U.S.A.

Check fuel level sensor unit and pump (main) harness

Check continuity at following terminals.

Fig 3: Checking Continuity Specifications At Terminals 2 & 5
Courtesy of NISSAN MOTOR CO., U.S.A.
If the results of check is NG, replace fuel pump assembly. If the results of check is OK, replace fuel level sensor unit.

Fig 4: Checking Fuel Level Sensor Unit & Pump (Main) Harness
Courtesy of NISSAN MOTOR CO., U.S.A.

Check fuel level sensor unit (sub)

Check resistance between terminals 1 and 2.

Fig 5: Checking Fuel Level Sensor Unit (Sub)

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

Fig 6: Checking Resistance Specifications Between Terminals 1 & 2

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