2003 NISSAN X-TRAIL FL fuel system

FL-4
[QR20DE]
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
PFP:17042
Removal and InstallationEBS00BKR
REMOVAL
WAR NIN G:
Be sure to read “General Precautions” when working on fuel system. Refer toFL-3, "
General Precau-
tions"
1. Release fuel pressure from fuel line.
Refer toEC-34, "
FUEL PRESSURE RELEASE"(WITH EURO-
OBD),EC-399, "
FUEL PRESSURE RELEASE"(WITHOUT
EURO-OBD).
2. Open fuel filer lid.
3. Open the filler cap and release the pressure inside the fuel tank.
4. Check fuel level on level place. If gauge indicates more than the
level shown in figure (full or almost full), drain fuel from fuel tank
until gauge indicates level shown in figure or below.
In case of fuel pump does not operate, take following procedure.
a. Insert fuel tube 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.
c. Insert fuel tube into fuel tank through fuel filler hose to draw fuel
from fuel tank.
lAs a guide, fuel level becomes the position shown in figure or
below when approximately 15 liter (13-1/4 lmp qt) of fuel are drained from fuel position.
KBIA0278E
1Lockring 2Main fuel level sensor unit, fuel filter
and fuel pump assembly3Jet pump, fuel hose and jet pump inlet
assembly
4 Chamber 5 Seal packing 6 Sub fuel level sensor unit
KBIA0280E
FEL0403D

FUEL TANK
FL-9
[QR20DE]
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FUEL TANKPFP:17202
Removal and InstallationEBS00BKT
REMOVAL
WA RN ING:
Be sure to read “General Precautions” when working on fuel system. Refer toFL-3, "
General Precau-
tions".
1. Release fuel pressure from fuel line, Refer toEC-34, "
FUEL
PRESSURE RELEASE",EC-399, "FUEL PRESSURE
RELEASE".
2. Open the fuel filler cap and release the pressure inside the fuel
tank.
3. Remove rear seat bottom.
4. Remove inspection hole cover, harness connector and fuel feed
hose.
5. Drain fuel from fuel tank if necessary. For the draining proce-
dure, refer to Step 4 in removal ofFL-4, "
FUEL LEVEL SENSOR
UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY".
CAUTION:
For the safety work and to maintain fuel tank gravity at center, drain fuel to the level where fuel
tank weight at left and right becomes equal.
6. Remove the quick connector.
lPut mating marks on hoses for correct installation.
7. Remove exhaust center tube and insulator.
PBIC0246E
1 Fuel filler cap 2 Grommet 3 Fuel filler tube
4 Vent hose 5 Vent tube 6 Fuel tank
7 Fuel filler hose 8 Fuel tank band 9 Fuel tank protector
KBIA0280E

FL-14
[YD22DDTi]
FUEL SYSTEM
FUEL SYSTEM
PFP:17503
Checking Fuel LinesEBS00BKH
Inspect fuel lines, filler cap and tank for improper attachment, leaks,
cracks, damage, loose connections, chafing or deterioration.
If necessary, repair or replace faulty parts.
General PrecautionsEBS00BKI
WAR NIN G:
When replacing fuel line parts, be sure to observe the following.
lPut a “CAUTION: FLAMMABLE” sign in workshop.
lBe sure to work in a well-ventilated area and furnish workshop with a CO2fire extinguisher.
lDo not smoke while servicing fuel system. Keep open flames and spark away from work area.
CAUTION:
lBefore removing fuel line parts, carry out the following procedures:
–a) Put drained fuel in an explosion-proof container and put the lid on securely. Keep the container
in safe area.
–b) Disconnect battery ground cable.
lAlways replace O-ring and clamps with new ones.
lDo not kink or twist tubes when they are being installed.
lDo not tighten hose clamps excessively to avoid damaging hoses.
lAfter installing tubes, run engine and check for fuel leaks at connections.
SMA803A

FL-16
[YD22DDTi]
FUEL FILTER
Air Bleeding
EBS00BLB
After fuel filter is replaced and after fuel system components are
removed/installed, bleed air from fuel path as follows:
1. Move priming pump up and down to bleed air from fuel path.
2. When air is bled, pumping of priming pump becomes heavy stop
operation at that time.
3. Crank the engine until it starts. Do not crank the engine for more
than 30 seconds.
4. If the engine does not starts, stop cranking and repeat step 1
above.
5. If the engine does not operate smoothly after it has started, race
it two or three times.
6. If air cannot be bled easily (pumping of priming pump does not become heavy), disconnect feed-side of
hose between fuel filter and electronically controlled fuel injection pump. After that, operate priming pump
and confirm that fuel comes out.
CAUTION:
Prepare a tray to collect fuel. Prevent fuel from adhering to rubber parts, especially the engine mount
insulator.
Draining WaterEBS00BLC
1. Prepare a tray at the drain hose open end.
2. Loosen drain cock, and operate priming pump to drain water
from fuel filter.
CAUTION:
lCoolant in filter is drained with fuel. Prepare larger capacity
pan than fuel filter volum.
lDrained coolant is mixed with fuel. Prevent fuel from adher-
ing to rubber parts such as engine mount insulator.
3. After draining, close drain cock by hand.
CAUTION:
If drain cock is tightened excessively, it may be damaged and
fuel will leak. Do not use tools to tighten drain cock.
4. Bleed air in fuel piping. Refer toFL-16, "
Air Bleeding".
5. Start engine.
SBIA0137E
SBIA0138E

FUEL LEVEL SENSOR UNIT
FL-17
[YD22DDTi]
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FUEL LEVEL SENSOR UNITPFP:17042
Removal and InstallationEBS00BLD
REMOVAL
WA RN ING:
Be sure to read “General Precautions” When working on fuel system. Refer toFL-3, "
General Precau-
tions"
1. Disconnect battery ground cable.
2. Open fuel filer lid.
3. Open the filler cap and release the pressure inside the fuel tank.
4. Check fuel level on level place. If gauge indicates more than the
level shown in figure (full or almost full), drain fuel from fuel tank
until gauge indicates level shown in figure or below.
In case of fuel pump does not operate, take following procedure.
a. Insert fuel tube 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.
c. Insert fuel tube into fuel tank through fuel filler hose to draw fuel
from fuel tank.
lAs a guide, fuel level becomes the position shown in figure or
below when approximately 15 liter (13-1/4 lmp qt) of fuel are drained from fuel position.
NOTE:
Adjusting fuel level is to prevent fuel from spilling, when fuel level sensor unit is removed.
SBIA0139E
1. Lock ring 2. Main fuel level sensor unit 3.Jet pump, fuel hose and jet pump inlet
assembly
4. Chamber 5. Seal packing 6. Sub fuel level sensor unit
SBIA0140E
FEL0403D

FUEL TANK
FL-21
[YD22DDTi]
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FUEL TANKPFP:17202
Removal and InstallationEBS00BL3
REMOVAL
WA RN ING:
Be sure to read “General Precautions” when working on fuel system. Refer toFL-3, "
General Precau-
tions"
1. Disconnect battery ground cable.
2. Open the fuel filler cap and release the pressure inside the fuel
tank.
3. Remove rear seat bottom.
4. Peel off floor carpet, then remove inspection hole cover.
5. Disconnect the harness connector, fuel feed tube and fuel return
tube.
6. Drain fuel from fuel tank if necessary. For the draining proce-
dure, refer to step 4 in removal ofFL-17, "
FUEL LEVEL SEN-
SOR UNIT".
CAUTION:
For the safety work and to maintain fuel tank gravity at center, drain fuel to the level where fuel
tank weight at left and right becomes equal.
7. Remove the quick connector.
lPut mating marks on hoses for correct installation.
8. Remove exhaust center tube and insulator.
9. Remove propeller shaft, Refer toPR-3, "
Removal and Installation"
SBIA0145E
1 Fuel filler cap 2 Grommet 3 Fuel filler tube
4 Vent hose 5 Vent tube 6 Fuel tank
7 Fuel filler hose 8 Fuel tank tightening band 9 Fuel tank protector
SBIA0140E

FSU-2
PRECAUTIONS
PRECAUTIONS
PFP:00001
CautionEES0006Z
lWhen installing rubber bushings, final tightening must be carried out under unladen conditions with tires
on flat, level ground. Oil will shorten the life of rubber bushings. Be sure to wipe off any spilled oil.
l“Unladen condition” means that fuel, coolant and lubricant are full and ready for drive. However, spare tire,
jack, and hand tools should be unloaded.
lAfter installing the removed suspension parts, always check wheel alignment and adjust if necessary.
lReplace the caulking nut with a new one. Install a new nut without wiping the oil off before tightening.
Precautions for Brake SystemEES000JA
lWhen installing rubber parts, final tightening must be carried out
under unladen condition* with tires on ground.
*: Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
lUse flare nut wrench when removing or installing brake tubes.
lAfter installing removed suspension parts, check wheel align-
ment and adjust if necessary.
lAlways torque brake lines when installing.
SBR686C

GI-1
GENERAL INFORMATION
A GENERAL INFORMATION
CONTENTS
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SECTION
GENERAL INFORMATION
PRECAUTIONS .......................................................... 3
Description ............................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for NATS (NISSAN ANTI-THEFT SYS-
TEM) ........................................................................ 3
General Precautions ................................................ 4
Precautions for All Mode 4´4 System .................... 5
Precautions for Three Way Catalyst ......................... 5
Precautions for Fuel ................................................. 5
Precautions for Multiport Fuel Injection System or
Engine Control System ............................................ 6
Precautions for Turbocharger (If Equipped) ............. 6
Precautions for Hoses .............................................. 6
HOSE REMOVAL AND INSTALLATION ............... 6
HOSE CLAMPING ................................................ 7
Precautions for Engine Oils ...................................... 7
HEALTH PROTECTION PRECAUTIONS ............. 7
ENVIRONMENTAL PROTECTION PRECAU-
TIONS ................................................................... 7
Precautions for Air Conditioning ............................... 8
HOW TO USE THIS MANUAL ................................... 9
Description ............................................................... 9
Terms ....................................................................... 9
Units ......................................................................... 9
Contents ................................................................... 9
Components ............................................................. 9
SYMBOLS ........................................................... 10
How to Follow Trouble Diagnoses .......................... 10
DESCRIPTION .................................................... 10
HOW TO FOLLOW TEST GROUPS IN TROU-
BLE DIAGNOSES ................................................11
HARNESS WIRE COLOR AND CONNECTOR
NUMBER INDICATION ....................................... 12
KEY TO SYMBOLS SIGNIFYING MEASURE-
MENTS OR PROCEDURES ............................... 13
How to Read Wiring Diagrams ............................... 14
CONNECTOR SYMBOLS ................................... 14
SAMPLE/WIRING DIAGRAM - EXAMPL - ......... 16DESCRIPTION .................................................... 17
Abbreviations .......................................................... 22
SERVICE INFORMATION FOR ELECTRICAL INCI-
DENT ......................................................................... 24
How to Perform Efficient Diagnosis for an Electrical
Incident ................................................................... 24
WORK FLOW ...................................................... 24
INCIDENT SIMULATION TESTS ........................ 24
CIRCUIT INSPECTION ....................................... 27
Control Units and Electrical Parts ........................... 32
PRECAUTIONS .................................................. 32
SMJ INSTALLATION ........................................... 34
CONSULT-II CHECKING SYSTEM .......................... 35
Description .............................................................. 35
Function and System Application ........................... 35
Nickel Metal Hydride Battery Replacement ............ 35
Checking Equipment .............................................. 35
CONSULT-II Data Link Connector (DLC) Circuit .... 36
INSPECTION PROCEDURE .............................. 36
LIFTING POINT ......................................................... 37
Special Service Tools ............................................. 37
Garage Jack and Safety Stand ............................... 37
2-pole Lift ................................................................ 38
Board-on Lift ........................................................... 39
TOW TRUCK TOWING ............................................. 40
Tow Truck Towing ................................................... 40
TOWING AN AUTOMATIC TRANSAXLE
MODELWITHFOURWHEELSONGROUND...40
TOWING THE VEHICLE WITH REAR WHEELS
RAISED (WITH FRONT WHEELS ON GROUND)
OR FRONT WHEELS RAISED ........................... 41
Vehicle Recovery (Freeing a stuck vehicle) ............ 41
TIGHTENING TORQUE OF STANDARD BOLTS .... 42
Tightening Torque Table ......................................... 42
IDENTIFICATION INFORMATION ............................ 43
Model Variation ....................................................... 43
IDENTIFICATION NUMBER ................................ 44
IDENTIFICATION PLATE .................................... 45
ENGINE SERIAL NUMBER ................................ 45
AUTOMATIC TRANSAXLE NUMBER ................. 45