ENGINE

SECTION
FUEL SYSTEM
FL FL

E
CONTENTS
PRECAUTION ............................................... 2 FUEL LEVEL SENSOR UNIT, FUEL FILTER F
AND FUEL PUMP ASSEMBLY ......................... 7
PRECAUTIONS ................................................... 2 Exploded View .......................................................... 7
Precautions for Removing Battery Terminal ............. 2 Removal and Installation .......................................... 8 G
General Precautions ................................................. 2 Disassembly and Assembly .....................................11
Inspection ................................................................12
PREPARATION ............................................ 3
FUEL TANK ...................................................... 13 H
PREPARATION ................................................... 3 Exploded View .........................................................13
Commercial Service Tools ........................................ 3
Removal and Installation .........................................13
Inspection ................................................................15 I
SYSTEM DESCRIPTION .............................. 4
SYSTEM .............................................................. 4 EVAP CANISTER .............................................. 16
Exploded View .........................................................16
J
WARNING/INDICATOR/CHIME LIST ......................... 4 Hydraulic Layout ......................................................17
WARNING/INDICATOR/CHIME LIST : Warning Removal and Installation .........................................17
lamps/Indicator lamps ............................................... 4 Disassembly and Assembly .....................................17
Inspection ................................................................18 K
PERIODIC MAINTENANCE .......................... 5
SERVICE DATA AND SPECIFICATIONS
FUEL SYSTEM .................................................... 5 (SDS) ............................................................ 19 L
Hydraulic Layout ....................................................... 5
Inspection .................................................................. 5 SERVICE DATA AND SPECIFICATIONS
Quick Connector ....................................................... 6 (SDS) ................................................................. 19
M
Fuel Tank .................................................................19
REMOVAL AND INSTALLATION ................ 7

Revision: 2015 January FL-1 2015 Q50

 PRECAUTIONS
< PRECAUTION >
PRECAUTION
PRECAUTIONS
Precautions for Removing Battery Terminal INFOID:0000000011564789

• When removing the 12V battery terminal, turn OFF the ignition
switch and wait at least 30 seconds.
NOTE:
ECU may be active for several tens of seconds after the ignition
switch is turned OFF. If the battery terminal is removed before ECU
stops, then a DTC detection error or ECU data corruption may
occur.
• For vehicles with the 2-batteries, be sure to connect the main bat-
tery and the sub battery before turning ON the ignition switch.
NOTE:
If the ignition switch is turned ON with any one of the terminals of
SEF289H
main battery and sub battery disconnected, then DTC may be
detected.
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error.
General Precautions INFOID:0000000011283520

WARNING:
When replacing fuel line parts, be sure to observe the following.
• Put a “CAUTION: FLAMMABLE” sign in the workshop.
• Be sure to work in a well ventilated area and furnish workshop with a CO2 fire extinguisher.
• Never smoke while servicing fuel system. Keep open flames and sparks away from the work area.
CAUTION:
• Use gasoline required by the regulations for octane number. Refer to GI-28, "Fuel".
• Before removing fuel line parts, perform out the following procedures:
- Put drained fuel in an explosion-proof container and put the lid on securely. Keep the container in
safe area.
- Release fuel pressure from the fuel lines. Refer to EC-168, "Work Procedure".
- Disconnect the battery cable from the negative terminal.
• Always replace O-ring and clamps with new ones.
• Never kink or twist tubes when they are being installed.
• Never tighten hose clamps excessively to avoid damaging hoses.
• After installing tubes, check there is no fuel leakage at connections in the following steps.
- Apply fuel pressure to fuel lines with turning ignition switch “ON” (with engine stopped). Then check
for fuel leakage at connections.
- Start engine and rev it up and check for fuel leakage at connections.
• Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the
“MIL” may come on.
• For servicing “On Board Refueling Vapor Recovery (ORVR)” parts, refer to EC-36, "On Board Refuel-
ing Vapor Recovery (ORVR)".

Revision: 2015 January FL-2 2015 Q50

 PREPARATION
< PREPARATION >
PREPARATION A
PREPARATION
Commercial Service Tools INFOID:0000000011283521
FL

Tool name Description

C
Power tool Loosening nuts and bolts

E
PBIC0190E

Revision: 2015 January FL-3 2015 Q50

 SYSTEM
< SYSTEM DESCRIPTION >
SYSTEM DESCRIPTION
SYSTEM
WARNING/INDICATOR/CHIME LIST
WARNING/INDICATOR/CHIME LIST : Warning lamps/Indicator lamps INFOID:0000000011283522

Name Design Arrangement/Function

Regarding the arrangement. Refer to MWI-8, "METER SYSTEM : De-
sign".
Low fuel warning lamp
Regarding the function. Refer to MWI-30, "WARNING LAMPS/INDI-
CATOR LAMPS : Low fuel warning lamp".

Revision: 2015 January FL-4 2015 Q50

 FUEL SYSTEM
< PERIODIC MAINTENANCE >
PERIODIC MAINTENANCE A
FUEL SYSTEM
Hydraulic Layout INFOID:0000000011283523
FL

JPBIA6525ZZ K

EVAP canister purge volume control

EVAP service port EVAP line
solenoid valve L
Fuel line Fuel tank EVAP canister
Fuel filler neck
: Vehicle front M

Inspection INFOID:0000000011283525

N
Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leakage, cracks, damage, loose connections, chafing or dete-
rioration.
O
: Engine
: Fuel line
P
: Fuel tank

If necessary, repair or replace damaged parts.

JPBIA0129ZZ

Revision: 2015 January FL-5 2015 Q50

 FUEL SYSTEM
< PERIODIC MAINTENANCE >
Quick Connector INFOID:0000000011283526

CAUTION:
• After connecting fuel tube quick connectors, check quick con-
nectors are secure.

: Quick connector
: Retainer
: Hard tube (or the equivalent)
: Connection (cross-section)
: Resin tube
: To under floor fuel line
: To fuel tank
: Tab
: Disconnection

• Ensure that connector and resin tube never contact any adja-
cent parts.

JPBIA0130ZZ

Revision: 2015 January FL-6 2015 Q50

 FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
< REMOVAL AND INSTALLATION >
REMOVAL AND INSTALLATION A
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
Exploded View INFOID:0000000011283527
FL

REMONVAL
C

J
JPBIA6526GB

Main fuel level sensor unit, fuel filter K

Retainer O-ring
and fuel pump assembly
Sub fuel level sensor unit
Right side Left side L
: Vehicle front

: N·m (kg-m, in-lb)

M
: Always replace after every disassembly.

DISASSEMBLY
N

Revision: 2015 January FL-7 2015 Q50

 FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
< REMOVAL AND INSTALLATION >

JPBIA4941ZZ

Main fuel level sensor unit Adapter Fuel filter and fuel pump assembly
Fuel tank temperature sensor

NOTE:
Sub fuel level sensor unit cannot be disassembled and should be replaced as a unit.
Removal and Installation INFOID:0000000011283528

WARNING:
Read “General Precautions” when working on the fuel system. Refer to FL-2, "General Precautions".
REMOVAL
1. Check fuel level on a level ground. If the fuel level is 7/8 of the fuel tank (full or nearly full), draw appropri-
ate amount of fuel from the fuel tank.

Guideline: Draw approximately 15 liters (4 US gal, 3-2/8 Imp gal) from a full-tank condition.
• In the event of malfunction in fuel pump, insert a hose measuring 20 mm (0.79 in) in diameter into the
filler opening to draw approximately 15 liters (4 US gal, 3-2/8 Imp gal) fuel.
2. Release the fuel pressure from the fuel lines. Refer to EC-168, "Work Procedure".
3. Open fuel filler lid.
4. Open filler cap and release the pressure inside fuel tank.
5. Remove rear seat cushion. Refer to SE-97, "SEAT CUSHION : Removal and Installation" (Bench seat
models) or SE-106, "SEAT CUSHION : Removal and Installation" (6:4 separate seat models).
6. Peel off floor carpet.
7. Remove mounting nuts , and then inspection hole cover.

: Direction mark
: Vehicle front

Right side : Main fuel level sensor unit, fuel filter,

and fuel pump assembly
Left side : Sub fuel level sensor unit

JPBIA3157ZZ

Revision: 2015 January FL-8 2015 Q50

 FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
< REMOVAL AND INSTALLATION >
8. Disconnect harness connector and fuel feed tube .
A
: Quick connector
: Vehicle front
FL
NOTE:
• Fuel does not return to the fuel tank.
• The sub fuel level sensor unit includes a harness connector
only. C
• Figure shows main fuel level sensor unit, fuel filter and fuel
pump assembly side of fuel tank. JPBIA3158ZZ

D
Disconnect quick connector as follows:
• Hold the sides of connector, push in tabs and pull out fuel feed
tube. E

: Pull
: Push in tabs F
• 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. G

JPBIA0134ZZ

H
CAUTION:
• Quick connector can be disconnected when the tabs
are completely depressed. Never twist it more than neces- I
sary.

: Connection (Cross-section) J
: To under floor fuel line
: To fuel tank
: Disconnection K

• Never use any tools to disconnected quick connector.

• Keep resin tube away from heat. Be especially careful
L
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- M
connection.
• Never remove the remaining retainer on hard tube (or
the equivalent) except when resin tube or retainer is N
replaced.
• When resin tube or hard tube (or the equivalent) is
replaced, also replace retainer with new one.
O
JPBIA0130ZZ

Revision: 2015 January FL-9 2015 Q50

 FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
< REMOVAL AND INSTALLATION >
• To keep the connecting portion clean and to avoid dam-
age and foreign materials, cover them completely with
plastic bags or something similar.

JPBIA0135ZZ

9. 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 and pull out fuel tube .
b. Removal of sub fuel level sensor unit:
i. Remove retainer.
ii. Raise and release sub fuel level sensor unit to remove.

JPBIA1836ZZ

INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Do not reuse O-rings.
Fuel hose
• When installing fuel hose connector , refer to “Quick Connector”.

: Retainer

JPBIA1992ZZ

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.

Revision: 2015 January FL-10 2015 Q50

 FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
< REMOVAL AND INSTALLATION >
• Pull the tube and the connector to check they are securely
connected. A

: Pull

• Visually confirm that the two retainer tabs are connected to the FL
connector.

JPBIA0140ZZ

D
Disassembly and Assembly INFOID:0000000011283529

DISASSEMBLY E
CAUTION:
Sub fuel level sensor unit cannot be disassembled and should be replaced as a unit.
Remove main fuel level sensor unit as follows:
F
1. Disconnect harness connector .
a. Hold connector by fingers and push stopper release tab.
b. Pull it out connector. G

I
JPBIA2586ZZ

2. Remove main fuel level sensor unit from adapter as fol- J

lows:

: Fuel filter and fuel pump assembly

K
a. Push in tab to release the lock.
b. After fixing tabs are disengaged, slide main fuel level sensor unit
out in direction shown by the arrow . L
CAUTION:
• Be careful not to damage the main fuel level sensor unit.
• Never disassemble fuel filter and fuel pump assembly. JPBIA4942ZZ
M
3. Remove adapter from the fuel filter and fuel pump assembly, if necessary, in the same procedure used in
removing main fuel level sensor unit.
N
ASSEMBLY
CAUTION:
Sub fuel level sensor unit cannot be disassembled and should be replaced as a unit.
Note to the following, and install in the reverse order of removal. O
1. Check for damage of main fuel level sensor unit installation position on the side of adapter.
2. Slide main 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. P

Revision: 2015 January FL-11 2015 Q50

 FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
< REMOVAL AND INSTALLATION >
3. Connect the black (single wire) , black (double wires) , and
red harnesses so that they are in the positions shown in the
figure.
• Securely insert harness connector until it stops.

JPBIA2588ZZ

Inspection INFOID:0000000011283530

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.

Revision: 2015 January FL-12 2015 Q50

 FUEL TANK
< REMOVAL AND INSTALLATION >
FUEL TANK
A
Exploded View INFOID:0000000011283531

FL

J
JPBIA6524GB

Fuel filler cap Grommet Fuel filler tube K

Clamp EVAP hose EVAP tube
Clip EVAP hose Vent hose
L
Clamp Fuel tank Clamp
Fuel filler hose Fuel tank mounting band Fuel tank protector
Insulator M
To EVAP canister

: N·m (kg-m, ft-lb) N

Removal and Installation INFOID:0000000011283532

O
WARNING:
Be sure to read “General Precautions” when working on the fuel system. Refer to FL-2, "General Pre-
cautions".
P
REMOVAL
• Drain fuel from fuel tank if necessary. Refer to FL-13, "Exploded View".
• Perform work on level place.
1. Perform steps 2 to 8 of “REMOVAL” in “ FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP
ASSEMBLY” on main and sub fuel level sensor units. Refer to FL-7, "Exploded View".
2. Remove center muffler and main muffler. Refer to EX-5, "Exploded View".

Revision: 2015 January FL-13 2015 Q50

 FUEL TANK
< REMOVAL AND INSTALLATION >
3. Remove propeller shaft. Refer to DLN-98, "Exploded View" (2WD models) or DLN-108, "Exploded View"
(AWD models).
4. Remove parking rear brake cables. Refer to PB-9, "Exploded View".
5. Remove rear suspension assembly. Refer to RSU-23, "Exploded View".
NOTE:
For this service, drive shaft, final drive, and rear suspension member are required not to be separate one
another during removal.
6. Disconnect fuel filler hose , EVAP hose , and vent hose at
fuel tank side.

: Fuel tank protector

: Vehicle front

JPBIA6650ZZ

7. Remove fuel tank protector.

8. Support the lower part of fuel tank with transmission jack (A).
CAUTION:
Support the position that fuel tank mounting bands never
engage.

JPBIA0145ZZ

9. Remove fuel tank mounting bands.

10. Supporting with hands, descend transmission jack carefully, and remove fuel tank.
CAUTION:
• Check that all connection points have been disconnected.
• Confirm there is no interference with vehicle.
11. Remove fuel filler tube if necessary.
INSTALLATION
Note the following, and install in the reverse order of removal.
• Surely clamp fuel hoses and insert hose to the length below.

Fuel filler hose : 35 mm (1.38 in)

The other hoses : 25 mm (0.98 in)
• Be sure hose clamp is not placed on swelled area of fuel tube.
• Tighten the clamp hand with the top mark until the mark is on
the bolt head flange.

JPBIA0146ZZ

Revision: 2015 January FL-14 2015 Q50

 FUEL TANK
< REMOVAL AND INSTALLATION >
• To connect quick connector, refer to FL-6, "Quick Connector".
A
Inspection INFOID:0000000011283533

INSPECTION AFTER INSTALLATION

FL
Use the following procedure to check for fuel leakage.
1. Turn ignition switch “ON” (with engine stopped), and check connections for leakage by applying fuel pres-
sure to fuel piping.
C
2. Start engine and rev it up and check there are no fuel leakage at the fuel system tube and hose connec-
tions.
• After removing/installing rear suspension assembly, check to adjust wheel alignment and then, adjust neutral
D
position of steering angle sensor. Refer to RSU-6, "Inspection" and ST-17, "Inspection".

Revision: 2015 January FL-15 2015 Q50

 EVAP CANISTER
< REMOVAL AND INSTALLATION >
EVAP CANISTER
Exploded View INFOID:0000000011283534

JPBIA6523GB

EVAP control system pressure sensor EVAP canister EVAP canister vent control valve
Connector Vent hose Vent hose
Canister filter Bracket Insulator
To EVAP canister purge volume con-
To floor panel To fuel tank
trol solenoid valve
: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Always replace after every disassembly.

Revision: 2015 January FL-16 2015 Q50

 EVAP CANISTER
< REMOVAL AND INSTALLATION >
Hydraulic Layout INFOID:0000000011283535

FL

JPBIA6525ZZ
J
EVAP canister purge volume control
EVAP service port EVAP line
solenoid valve
Fuel line Fuel tank EVAP canister K
Fuel filler neck
: Vehicle front
L
Removal and Installation INFOID:0000000011283536

M
REMOVAL
1. Disconnect each hoses and connectors.
2. Remove EVAP canister fixing bolt. N
3. Remove EVAP canister.
INSTALLATION
Install in the reverse order of removal. O

Disassembly and Assembly INFOID:0000000011283537

P
DISASSEMBLY

Revision: 2015 January FL-17 2015 Q50

 EVAP CANISTER
< REMOVAL AND INSTALLATION >
1. Disengage the pawl and turn EVAP canister vent control valve
counterclockwise.
• Lock
• Unlock
2. Remove the EVAP canister vent control valve.
3. Remove the EVAP control system pressure sensor.

JPBIA6652ZZ

ASSEMBLY
Assemble in the reverse order of disassembly.
CAUTION:
Always replace O-ring with a new one.
Inspection INFOID:0000000011283538

Check EVAP canister as per the following:

1. Block port .
2. Blow air into port and check that it flows freely out of port .
3. Release blocked port .
4. Apply vacuum pressure to port and check that vacuum pres-
sure exists at the ports and .
5. Block port and .
6. Apply pressure to port and check that there is no leakage.
JPBIA6653ZZ

Revision: 2015 January FL-18 2015 Q50

 SERVICE DATA AND SPECIFICATIONS (SDS)
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS) A
SERVICE DATA AND SPECIFICATIONS (SDS)
Fuel Tank INFOID:0000000011283542
FL

Standard and Limit

C
Fuel tank capacity Approx. 75.6 (20 US gal, 16-5/8 Imp gal)
Fuel recommendation Refer to GI-28, "Fuel"
D

Revision: 2015 January FL-19 2015 Q50