Nissan Sentra Service Manual: Disassembly and assembly

FUEL LEVEL SENSOR UNIT

Exploded View

Fuel Level Sensor Unit

1. Fuel filter and pump assembly
2. Fuel level sensor unit
3. Float arm assembly
4. Fuel tank temperature sensor
5. Fuel level sensor unit/fuel tank temperature sensor harness connector

Disassembly and Assembly

DISASSEMBLY

1. Disconnect fuel level sensor unit/fuel tank temperature sensor harness connector (1).

NOTE:

Hold connector with your fingers, because there is no tab for releasing stopper. Pull it out straight downward.

2. Remove fuel tank temperature sensor (2) from fuel filter and fuel pump assembly (1).

3. Using a suitable tool (2), remove fuel level sensor unit (3) from fuel filter and fuel pump assembly (1).

CAUTION:

• Be careful not to damage the fuel level sensor unit.

• Do not disassemble fuel filter and fuel pump assembly.

ASSEMBLY

1. Check for damage of fuel level sensor unit installation position on the side of fuel filter and pump assembly.
2. Slide fuel level sensor unit until it aligns to installation groove, then insert it until it stops.

• After inserting, apply force in reverse direction (removal direction) to ensure it cannot be pulled out.

3. Connect fuel level sensor unit/fuel tank temperature sensor harness connector.

INSPECTION AFTER INSTALLATION

Use the following procedure to check for fuel leaks.

1. Turn ignition switch “ON” (with engine stopped), then check connections for leaks by applying fuel pressure to fuel piping.
2. Start engine and let it idle and check there are no fuel leaks at the fuel system connections.