fuel filter NISSAN X-TRAIL 2003 Electronic User Guide

FUEL PUMP CIRCUIT
EC-633
[QR (WITHOUT EURO-OBD)]
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EC
FUEL PUMP
1. Disconnect fuel level sensor unit and fuel pump harness connector.
2. Check resistance between fuel level sensor unit and fuel pump
terminals 3 and 5.
CONDENSER
1. Turn ignition switch "OFF".
2. Disconnect condenser harness connector.
3. Check resistance between condenser terminals as 1 and 2.
Removal and InstallationEBS00BA2
FUEL PUMP
Refer toFL-4, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY". Resistance: Approximately 1.0W[at 25°C(77°F)]
PBIB0658E
Resistance: Above 1 MWat 25°C(77°F)
SEF124Y

EC-664
[YD]
BASIC SERVICE PROCEDURE
BASIC SERVICE PROCEDURE
PFP:00018
Fuel FilterEBS0036N
DESCRIPTION
A water draining cock is on the lower side and a priming pump for bleeding air is on the upper side.
AIR BLEEDING
Pump the priming pump to bleed air.
lWhen air is bled completely, the pumping of the priming pump
suddenly becomes heavy. Stop the operation at that time.
lIf it is difficult to bleed air by the pumping of the priming pump
(the pumping of the priming pump does not become heavy), dis-
connect the fuel supply hose between the fuel filter and the fuel
gallery. Then, perform the operation described above, and make
sure that fuel comes out. (Use a pan, etc. so as not to spill fuel.
Do not let fuel get on engine and other parts.) After that, connect
the hose, then bleed air again.
lStart engine and let it idle for at least one minute after perform-
ing air bleeding.
WATER DRAINING
1. Remove the fuel filter, filter bracket, protector assembly from the dash panel as follows.
a. Remove the air cleaner case (upper), air duct assembly, and vacuum hose for brake booster (between the
vacuum pump and vacuum pipe).
CAUTION:
After the duct is removed, cover the opening with gum tape, etc. to prevent foreign object from
getting into the engine during the operation.
b. Remove the mounting nuts on the dash panel, then remove the fuel filter, filter bracket, and protector
assembly from the dash panel.
lIt is not necessary to disconnect the fuel hose.
2. Using a tool such as a pliers, loosen the water draining cock at the bottom of the fuel filter.
Accelerator Pedal Released Position LearningEBS009NW
DESCRIPTION
"Accelerator Pedal Released Position Learning" is an operating to learn the fully released position of the
accelerator pedal by monitoring the accelerator pedal position sensor output signal. It must be performed
when accelerator work unit or ECM is replaced.
OPERATION PROCEDURE
1. Turn ignition switch "ON".
2. Select "OFF ACCEL PO SIG" in "ACTIVE TEST" mode with
CONSULT-II
3. Make sure that accelerator pedal is released.
SEF375Y
PBIB0411E

TROUBLE DIAGNOSIS
EC-673
[YD]
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EC
1.INSPECTION START
1. Check service records for any recent repairs that may indicate a related problem.
2. Check the current need for scheduled maintenance, especially for fuel filter and air cleaner filter. Refer to
MA-7, "
PERIODIC MAINTENANCE".
3. Open engine hood and check the following:
–Harness connectors for improper connections
–Vacuum hoses for splits, kinks, or improper connections
–Wiring for improper connections, pinches, or cuts
4. Start engine and warm it up to the normal operating tempera-
ture.
>> GO TO 2.
2.PREPARATION FOR CHECKING IDLE SPEED
With CONSULT-II
Connect CONSULT-II to the data link connector.
>> GO TO 3.
3.CHECK IDLE SPEED
With CONSULT-II
1. Select “CKPS·RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
2. Read idle speed.
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
4.CHECK FOR INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace.
SEF142I
725±25 rpm
SEF817Y

EC-674
[YD]
TROUBLE DIAGNOSIS
5.BLEED AIR FROM FUEL SYSTEM
1. Stop engine.
2. Use priming pump to bleed air from fuel system. Refer toEC-664, "
AIR BLEEDING".
>> GO TO 6.
6.CHECK IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and let it idle.
2. Select “CKPS·RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
3. Read idle speed.
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7.DRAIN WATER FROM FUEL FILTER
Drain water from fuel filter. Refer toEC-664, "
WATER DRAINING".
>> GO TO 8.
8.CHECK IDLE SPEED AGAIN
With CONSULT-II
1. Start engine and let it idle.
2. Select “CKPS·RPM (TDC)” in “DATA MONITOR” mode with CONSULT-II.
3. Read idle speed.
OK or NG
OK >>INSPECTION END
NG >> GO TO 9.
9.CHECK AIR CLEANER FILTER
Check air cleaner filter for clogging or breaks.
OK or NG
OK >> GO TO 10.
NG >> Replace air cleaner filter.725±25 rpm
SEF817Y
725±25 rpm
SEF817Y

PRIMARY TIMING CHAIN
EM-165
[YD22DDTi]
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REMOVAL
1. Remove coolant reservior tank.
2. Remove charge air cooler. Refer toEM-114, "
Removal and Installation".
3. Remove oil cleaner and air duct. Refer toEM-112, "
Removal and Installation".
4. Remove rocker cover. Refer toEM-147, "
Removal and Installation".
5. Remove RH engine mount insulator and bracket. Refer toEM-184, "
Removal and Installation".
6. Pull power steering reservoir tank out of brackets to move power steering piping.
CAUTION:
To avoid removing power steering reservoir tank out of brackets move it with power steering pip-
ing aside.
7. Remove oil pan. Refer toEM-125, "
Removal and Installation".
8. Remove oil filter bracket. Refer toLU-22, "
Removal and Installation".
9. Remove injection tube and fuel injector. Refer toEM-135, "
Removal and Installation".
10. Remove secondary timing chain and associated parts. Refer toEM-158, "
Removal and Installation".
11. When removing rear chain case, remove camshaft sprockets. Refer toEM-149, "
Removal and Installa-
tion".
12. Remove crankshaft pulley.
a. Hold crankshaft pulley with the pulley holder (SST).
b. Loosen crankshaft pulley fixing bolt and pull out the bolt approx-
imately 10 mm (0.39 in).
c. Using pulley puller (SST), remove crankshaft pulley.
lUse two M6 bolts with approx. 60 mm (2.36 in) shank length
for securing crankshaft pulley.
7. Chain guide 8. Spacer 9. Front chain case
10. Crankshaft pully 11. Front oil seal 12. Oil pump
13. Primary timing chain 14. Oil pump drive sprocket 15. Crankshaft sprocket
16. Secondary timing chain 17. Rear chain case 18. Power steering pump
JEM131G
JEM132G

FL-1
FUEL SYSTEM
B ENGINE
CONTENTS
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SECTION
A
FL
FUEL SYSTEM
QR20DE
PREPARATION ........................................................... 2
Commercial Service Tool ......................................... 2
FUEL SYSTEM ........................................................... 3
Checking Fuel Lines ................................................. 3
General Precautions ................................................ 3
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND
FUEL PUMP ASSEMBLY ........................................... 4
Removal and Installation .......................................... 4
REMOVAL ............................................................. 4
INSPECTION AFTER REMOVAL ......................... 6
INSTALLATION ..................................................... 6
INSPECTION AFTER INSTALLATION ................. 7
Disassembly and Assembly ..................................... 7
DISASSEMBLY ..................................................... 7
ASSEMBLY ........................................................... 8
FUEL TANK ................................................................ 9
Removal and Installation .......................................... 9
REMOVAL ............................................................. 9
INSTALLATION ................................................... 10
Inspection After Installation .....................................11
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 12
Standard and Limit ................................................. 12
Tightening Torque ................................................... 12
YD22DDTi
PREPARATION ......................................................... 13
Commercial Service Tool ........................................ 13
FUEL SYSTEM ......................................................... 14
Checking Fuel Lines ............................................... 14
General Precautions ............................................... 14
FUEL FILTER ............................................................ 15
Removal and Installation ........................................ 15
REMOVAL ........................................................... 15
INSTALLATION ................................................... 15
INSPECTION AFTER INSTALLATION ................ 15
Air Bleeding ............................................................ 16
Draining Water ........................................................ 16
FUEL LEVEL SENSOR UNIT ................................... 17
Removal and Installation ........................................ 17
REMOVAL ........................................................... 17
INSPECTION AFTER REMOVAL ....................... 19
INSTALLATION ................................................... 19
INSPECTION AFTER INSTALLATION ................ 20
FUEL TANK .............................................................. 21
Removal and Installation ........................................ 21
REMOVAL ........................................................... 21
INSTALLATION ................................................... 22
Inspection After Installation .................................... 22
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 23
Standard and Limit .................................................. 23
Tightening Torque ................................................... 23

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 LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
FL-5
[QR20DE]
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FL
NOTE:
Adjusting fuel level is to prevent fuel from spilling, when fuel level sensor unit, fuel filter and fuel pump
assembly is removed.
5. Remove rear seat bottom.
6. Remove inspection hole cover, harness connector and fuel feed hose.
lRemove the quick connector as follows.
NOTE:
lHold the sides of the connector, push in tubs and pull out the
tube.
lIf the connector and the tube are stuck together, push and pull
several times until they start to move. Then disconnect them by
pulling.
CAUTION:
lThe tube can be removed when the tabs are completely
depressed. Do not twist it more than necessary.
lDo not use any tools to remove the quick connector.
lKeep the resin tube away from heat. Be especially careful
when welding near the tube.
lPrevent acid liquid such as battery electrolyte etc. from get-
ting on the resin tube.
lDo not bend or twist the tube during installation and
removal.
lDo not remove the remaining retainer on tube or fuel level
sensor unit.
lWhen the tube or fuel level sensor unit is replaced, also
replace the retainer with a new one.
Retainer color: Green.
lTo keep clean the connecting portion and to avoid damage
and foreign materials, cover them completely with plastic
bags or something similar.
SFE562A
PBIC0199E
PBIC0163E

FL-6
[QR20DE]
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
7. Using a lock ring wrench, remove the lock ring.
8. Remove main fuel level sensor unit, fuel filter and fuel pump
assembly, and sub fuel level sensor unit.
CAUTION:
lDo not bend the float arm during removal.
lAvoid impacts such as falling when handling compo-
nents.
lRemoval of main fuel level sensor unit, fuel filter, fuel pump
assembly.
lRaise the sender unit, and remove the jet pump to remove the
sender unit.
lLeave the jet pump on the fuel tank with the fuel hose.
lIf necessary, remove the chamber from the bottom of the fuel tank.
lRemove the chamber by sliding toward the rear of the vehicle.
Removal of sub fuel level sensor unit.
lRaise and release the sub fuel level sensor unit to remove.
lIf necessary, remove the jet pump inlet from the bottom of the fuel tank.
To remove it, pinch the tabs (2 places).
INSPECTION AFTER REMOVAL
Make sure the fuel pump strainer is free from foreign materials, If any are found, remove them.
INSTALLATION
Install in the reverse order of removal paying attention to the follow-
ing.
lWhen installing the chamber and jet pump, insert them fully until
a click sound of full stopper engagement is heard (Ditto for jet
pump inlet).
lConnect the quick connector as follows.
1. Check the connection for damage and foreign materials.
2. Align the connector with the tube, then insert the connector straight into the tube until a click is heard.
3. After connecting, make sure that the connection is secure by following the steps below.
lVisually confirm that the two retainer tabs are connected to the connector.
lPull the tube and the connector to make sure they are securely connected.
PBIC0240E
KBIA0281E
KBIA0302E

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
FL-7
[QR20DE]
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FL
lInstall fuel level sensor unit with mating mark (triangular protru-
sion) facing between two carved lines on fuel tank.(Figure
shows left side of fuel tank.)
NOTE:
On right side of fuel tank, there are three carved lines on fuel
tank. Set mating mark between two outer carved lines.
lInstall the inspection hole cover with the front mark (arrow) fac-
ing front of the vehicle (Both for RH and LH).
INSPECTION AFTER INSTALLATION
Start the engine and rev it up and make sure there is no fuel leakage at connections.
Disassembly and AssemblyEBS00BKS
NOTE:
Sub fuel level sensor unit cannot be disassembled and should be replaced as a unit.
DISASSEMBLY
1. Remove fuel pump removing bracket.
lUsing a screwdriver, remove the snap fit portion of bracket in the
order of (1), (2), (3) and (4) as shown in the figure.
KBIA0282E
PBIC0241E
1 Pressure regulator 2 Fuel pump 3 Packing
4 Fuel filter 5 Rubber 6 Fuel level sensor unit
7 Bracket
PBIC0242E