Infiniti EX35. Manual - part 852

FL-6

< ON-VEHICLE REPAIR >

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

a.

Insert hose of less than 25 mm (0.98 in) in diameter into fuel filler tube through fuel filler opening to draw
fuel from fuel filler tube.

b.

Disconnect fuel filler hose from fuel filler tube. Refer to 

FL-10, "Exploded View"

.

c.

Insert fuel tube into fuel tank through fuel filler hose to draw fuel from fuel tank.

2.

Release the fuel pressure from the fuel lines. Refer to 

EC-538, "Inspection"

.

3.

Open fuel filler lid.

4.

Open filler cap and release the pressure inside fuel tank.

5.

Remove rear seat cushion. Refer to 

SE-98, "Exploded View"

.

6.

Peel off floor carpet, then remove inspection hole cover (1) units
by turning clips (2) clockwise by 90 degrees.

7.

Disconnect harness connector (3) and fuel feed tube (2).

Disconnect quick connector as follows:

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

tube.

• If quick connector sticks to tube of main fuel level sensor unit,

push and pull quick connector several times until they start to
move. Then disconnect them by pulling.

CAUTION:

A

: Direction mark

b

:  90

°

: Vehicle front

Right side

: Main fuel level sensor unit, fuel filter 
and fuel pump assembly

Left side

: Sub fuel level sensor unit

JPBIA0132ZZ

1

: Quick connector

: Vehicle front

JPBIA0133ZZ

A

:  Pull

B

: Push in tabs

JPBIA0134ZZ

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

FL-7

< ON-VEHICLE REPAIR >

C

D

E

F

G

H

I

J

K

L

M

A

FL

N

P

O

• Quick connector (1) can be disconnected when the tabs

(F) are completely depressed. Never twist it more than
necessary.

• Never use any tools to disconnected quick connector.
• Keep resin tube (C) away from heat. Be especially careful

when welding near the resin tube.

• Prevent acid liquid such as battery electrolyte, etc. from

getting on resin tube.

• Never bend or twist resin tube during installation and dis-

connection. 

• Never remove the remaining retainer (2) on hard tube (or

the equivalent) (A) except when resin tube or retainer is
replaced.

• When resin tube or hard tube (or the equivalent) is

replaced, also replace retainer with new one. 

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

age and foreign materials, cover them completely with
plastic bags (A) or something similar.      

8.

Remove main fuel level sensor unit, fuel filter and fuel pump assembly, and sub fuel level sensor unit as
follows:

CAUTION:

• Never bend float arm during removal.
• Avoid impacts such as falling when handling components.

a.

Removal of main fuel level sensor unit, fuel filter and fuel pump assembly:

i.

Remove retainer.

ii.

Raise main fuel level sensor unit, fuel filter and fuel pump assembly, and disconnect quick connector as
follows:
• Push in tabs (1) and pull out fuel tube (2).

b.

Removal of sub fuel level sensor unit:

i.

Remove retainer.

B

: Connection (Cross-section)

D

: To under floor fuel line

E

: To fuel tank

G

: Disconnection

JPBIA0130ZZ

JPBIA0135ZZ

JPBIA1836ZZ

FL-8

< ON-VEHICLE REPAIR >

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

ii.

Raise and release sub fuel level sensor unit to remove.

INSTALLATION

Note to the following, and install in the reverse order of removal.

Fuel tube

• When installing fuel tube (1) , refer to “Quick Connector”.

Main and Sub Fuel Level Sensor Unit

• Face main and sub fuel level sensor units as shown in the figure,

and install them with the knock pin (C) on back aligned with pin
hole on fuel tank.

• Install retainer so that its notch becomes parallel with the notch on

fuel tank.

• Tighten retainer mounting bolts evenly.

Quick Connector

• Connect quick connector as follows:
1.

Check the connection for damage or any foreign materials.

2.

Align the connector with the tube, then insert the connector straight into the tube until a click sound is
heard.

3.

After connecting, check that the connection is secure by following method.

2

:  Retainer

JPBIA1992ZZ

A

: Right side

B

: Left side

: Vehicle front

JPBIA2038ZZ

A

: Align notches

: Vehicle front

JPBIA2039ZZ

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY

FL-9

< ON-VEHICLE REPAIR >

C

D

E

F

G

H

I

J

K

L

M

A

FL

N

P

O

• Pull the tube and the connector to check they are securely

connected.

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

connector.

Inspection

INFOID:0000000003136991

INSPECTION AFTER INSTALLATION

Use the following procedure to check for fuel leakage.

1.

Turn ignition switch “ON” (with engine stopped), then check connections for leakage by applying fuel pres-
sure to fuel piping.

2.

Start engine and let it idle and check there are no fuel leakage at the fuel system connections.

A

:  Pull

JPBIA0140ZZ