Nissan Altima HL32 Hybrid. Manual - part 458

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FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

- Visually confirm that the two retainer tabs are connected to the

quick connector. 

Inspection

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INSPECTION AFTER INSTALLATION

Use the following procedure to check for fuel leaks.
1. Check connections for leaks by applying fuel pressure to the fuel piping. Refer to 

EC-465, "Inspection"

.

2. Turn on the Hybrid System and let it idle and make sure there are no fuel leaks at the fuel system connec-

tions.

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FUEL TANK

Exploded View

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Removal and Installation

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REMOVAL

WARNING:

Read “General Precautions” before working on the fuel system. 

Refer to 

GI-29, "General Precautions"

.

1. Disconnect the 12-volt battery negative terminal.
2. Check the fuel level with the vehicle on a level surface. If the fuel

gauge indicates more than the level as shown (7/8 full), drain

the fuel from the fuel tank until the fuel gauge indicates a level at

or below as shown (7/8 full). 

• In case the fuel pump does not operate, use the following pro-

cedure.

a. Insert fuel tubing of less than 25mm (0.98in) diameter into the

fuel filler tube through the fuel filler opening to drain fuel from the

fuel filler tube.

b. Disconnect the fuel filler hose from the fuel filler tube.
c. Insert fuel tubing into the fuel tank through the fuel filler hose to

drain fuel from the fuel tank.

1.

Lock ring

2.

Fuel level sensor, fuel filter, and fuel 
pump assembly

3.

Seal ring

4.

Fuel tank mounting straps

5.

Fuel tank protector

6.

Fuel tank

7.

Fuel filler hose 

8.

Fuel filler tube

9.

Grommet

10. Fuel filler cap 

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FUEL TANK

• As a guide, the fuel level reaches or is less than the level on the fuel gauge as shown, when approxi-

mately 10   (2 5/8 US gal, 2 1/4 Imp gal) of fuel is drained from a full fuel tank.

3. Open the fuel filler cap to release the pressure inside the fuel tank.
4. Release fuel pressure from fuel line, Refer to 

EC-465, "Inspection"

.

5. Remove rear seat bottom. Refer to 

SE-22, "Removal and Installation"

.

6. Turn the four retainers 90

° in a clockwise direction and remove

the fuel pump inspection hole cover.

7. Disconnect the fuel level sensor, fuel filter, and fuel pump

assembly electrical connector, EVAP hose quick connector, and

fuel feed hose quick connector.

a. Disconnect the quick connectors as follows:

• Hold the sides of the connector, push in tabs and pull out the

tube.

• If the connector and the tube are stuck together, push and pull

several times until they start to move. Then disconnect them

by pulling.

CAUTION:

• The tube can be removed when the tabs are completely

depressed. Do not twist it more than necessary.

• Do not use any tools to remove the quick connector.

• Keep the resin tube away from heat. Be especially careful

when welding near the tube.

• Prevent acid liquid such as battery electrolyte, from getting on the resin tube.

• Do not bend or twist the tube during installation and removal.

• Only when the tube is replaced, remove the remaining retainer on the tube or fuel level sensor,

fuel filter, and fuel pump assembly.

• When the tube or fuel level sensor, fuel filter, and fuel pump assembly is replaced, also replace

the retainer with a new one (green colored retainer).

• To keep the connecting portion clean and to avoid dam-

age and foreign materials, cover them completely with

plastic bags or something similar.      

8. Remove the front tube at center pipe.

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9. Remove the front tube hanger.
10. Remove the tunnel stay.
11. Remove the center exhaust tube with muffler. Refer to 

EX-6, "Removal and Installation"

.

12. Remove the parking brake cable retainers and position the parking brake cables out of the way. Refer to

PB-5, "Exploded View"

.

13. Remove the fuel tank protector. 
14. Remove the stabilizer bar brackets and reposition the stabilizer bar. Refer to 

RSU-15, "Removal and

Installation"

.

15. Disconnect the return hose.
16. Remove the fuel filler hose hose at the fuel tank side.
17. Remove the fuel filler hose hose at the tube side.
18. Remove the evap cannister bolt.
19. Reposition the evap cannister.
20. Disconnect the fuel tank mounting straps while supporting the fuel tank.
21. Remove the fuel tank.
22. If replacing the fuel tank, remove the fuel level sensor, fuel filter and fuel pump assembly to transfer to the

new fuel tank.

INSTALLATION

Install in the reverse order of removal paying attention to the following.

• Before tightening the fuel tank mounting straps, temporarily install the filler hose and the recirculation hose.

Tighten all fuel tank mounting strap bolts to specification, then tighten the hose clamps.

• Connect the quick connector as follows:

- Check the connection for damage or any foreign materials.

- Align the connector with the tube, then insert the connector straight

into the tube until a click is heard.

• After the tube is connected, make sure the connection is secure by

performing the following checks:

- Pull on the tube and the connector to make sure they are securely

connected.

- Visually confirm that the two retainer tabs are connected to the

quick connector. 

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