2003 NISSAN X-TRAIL fuel filter

PRECAUTIONS
GI-7
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HOSE CLAMPING

If old rubber hose is re-used, install hose clamp in its original
position (at the indentation where the old clamp was). If there is
a trace of tube bulging left on the old rubber hose, align rubber
hose at that position.

Discard old clamps; replace with new ones.

After installing plate clamps, apply force to them in the direction
of the arrow, tightening rubber hose equally all around.
Precautions for Engine OilsEAS000FW
Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin contact
with used oil.
If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible.
HEALTH PROTECTION PRECAUTIONS

Avoid prolonged and repeated contact with oils, particularly used engine oils.

Wear protective clothing, including impervious gloves where practicable.

Do not put oily rags in pockets.

Avoid contaminating clothes, particularly underpants, with oil.

Heavily soiled clothing and oil-impregnated footwear should not be worn. Overalls must be cleaned regu-
larly.

First aid treatment should be obtained immediately for open cuts and wounds.

Use barrier creams, applying them before each work period, to help the removal of oil from the skin.

Wash with soap and water to ensure all oil is removed (skin cleansers and nail brushes will help). Prepa-
rations containing lanolin replace the natural skin oils which have been removed.

Do not use gasoline, kerosene, diesel fuel, gas oil, thinners or solvents for cleaning skin.

If skin disorders develop, obtain medical advice without delay.

Where practical, degrease components prior to handling.

Where there is a risk of eye contact, eye protection should be worn, for example, chemical goggles or face
shields; in addition an eye wash facility should be provided.
ENVIRONMENTAL PROTECTION PRECAUTIONS
Dispose of used oil and used oil filters through authorized waste disposal contractors to licensed waste dis-
posal sites, or to the waste oil reclamation trade. If in doubt, contact the local authority for advice on disposal
facilities.
It is illegal to pour used oil on to the ground, down sewers or drains, or into water sources.
The regulations concerning pollution vary between regions.
Precautions for Air Conditioning EAS000FX
Use an approved refrigerant recovery unit any time the air conditioning system must be discharged. Refer to
ATC/MTC section “HFC-134a (R-134a) Service Procedure”, “REFRIGERANT LINES” for specific instructions.
SMA021D
SMA022D

EM-1
ENGINE MECHANICAL
B ENGINE
CONTENTS
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SECTION EM
A
EM

ENGINE MECHANICAL
QR
PRECAUTIONS .......................................................... 5
Precautions for Drain Engine Coolant ...................... 5
Precautions for Disconnecting Fuel Piping .............. 5
Precautions for Removal and Disassembly ............. 5
Precautions for Inspection, Repair and Replace-
ment ......................................................................... 5
Precautions for Assembly and Installation ............... 5
Parts Requiring Angle Tightening ............................. 5
Precautions for Liquid Gasket .................................. 6
REMOVAL OF LIQUID GASKET .......................... 6
LIQUID GASKET APPLICATION PROCEDURE ..... 6
PREPARATION ........................................................... 7
Special Service Tools ............................................... 7
Commercial Service Tools ........................................ 9
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ...............................................11
NVH Troubleshooting — Engine Noise ................... 11
Use the Chart Below to Help You Find the Cause
of the Symptom. ..................................................... 12
DRIVE BELTS ........................................................... 13
Checking Drive Belts .............................................. 13
Tension Adjustment ................................................ 13
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 14
Removal and Installation of Drive Belt Auto-Ten-
sioner ..................................................................... 14
REMOVAL ........................................................... 14
INSTALLATION ................................................... 14
AIR CLEANER AND AIR DUCT ............................... 15
Removal and Installation ........................................ 15
REMOVAL ........................................................... 15
INSTALLATION ................................................... 16
Changing Air Cleaner Filter .................................... 16
REMOVAL ........................................................... 16
INSTALLATION ................................................... 16
INTAKE MANIFOLD ................................................. 17
Removal and Installation (QR20DE) ...................... 17REMOVAL ........................................................... 17
INSTALLATION ................................................... 18
INSPECTION AFTER INSTALLATION ................ 19
Removal and Installation (QR25DE) ...................... 20
REMOVAL ........................................................... 20
INSPECTION AFTER REMOVAL ....................... 21
INSTALLATION ................................................... 22
INSPECTION AFTER INSTALLATION ................ 22
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST .......................................................................... 23
Removal and Installation ........................................ 23
REMOVAL ........................................................... 23
INSPECTION AFTER REMOVAL ....................... 24
INSTALLATION ................................................... 24
OIL PAN AND OIL STRAINER ................................. 25
Removal and Installation ........................................ 25
REMOVAL ........................................................... 25
INSPECTION AFTER REMOVAL ....................... 27
INSTALLATION ................................................... 27
INSPECTION AFTER INSTALLATION ................ 28
IGNITION COIL ......................................................... 29
Removal and Installation ........................................ 29
REMOVAL ........................................................... 29
INSTALLATION ................................................... 29
SPARK PLUG ........................................................... 30
Removal and Installation ........................................ 30
REMOVAL ........................................................... 30
INSPECTION AFTER REMOVAL ....................... 30
INSTALLATION ................................................... 31
FUEL INJECTOR AND FUEL TUBE ........................ 32
Removal and Installation (QR20DE) ...................... 32
REMOVAL ........................................................... 32
INSTALLATION ................................................... 34
INSPECTION AFTER INSTALLATION ................ 36
Removal and Installation (QR25DE) ...................... 37
REMOVAL ........................................................... 37
INSTALLATION ................................................... 39
INSPECTION AFTER INSTALLATION ................ 41

EM-3
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EMA
Parts Requiring Angle Tightening ......................... 122
Precautions For Liquid Gasket ............................. 123
REMOVAL OF LIQUID GASKET ...................... 123
LIQUID GASKET APPLICATION PROCEDURE . 123
PREPARATION ....................................................... 124
Special Service Tools ........................................... 124
Commercial Service Tools .................................... 127
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ............................................ 129
NVH Troubleshooting — Engine Noise ................ 129
Use the Chart Below to Help You Find the Cause
of the Symptom. ................................................... 130
DRIVE BELTS ......................................................... 131
Checking Drive Belts ............................................ 131
Tension Adjustment .............................................. 131
A/C COMPRESSOR BELT ............................... 132
ALTERNATOR AND WATER PUMP BELT ....... 132
Removal and Installation ...................................... 132
REMOVAL ......................................................... 132
INSTALLATION ................................................. 132
AIR CLEANER AND AIR DUCT ............................. 133
Removal and Installation ...................................... 133
REMOVAL ......................................................... 133
INSTALLATION ................................................. 133
CHANGING AIR CLEANER FILTER ................. 134
CHARGE AIR COOLER ......................................... 135
Removal and Installation ...................................... 135
REMOVAL ......................................................... 135
INSPECTION AFTER REMOVAL ..................... 135
INSTALLATION ................................................. 135
INTAKE MANIFOLD ............................................... 136
Removal and Installation ...................................... 136
REMOVAL ......................................................... 136
INSPECTION AFTER REMOVAL ..................... 137
INSTALLATION ................................................. 137
INSPECTION AFTER INSTALLATION ............. 138
CATALYST .............................................................. 139
Removal and Installation ...................................... 139
REMOVAL ......................................................... 139
INSTALLATION ................................................. 140
EXHAUST MANIFOLD AND TURBOCHARGER .. 141
Removal and Installation ...................................... 141
REMOVAL ......................................................... 141
INSTALLATION ................................................. 142
INSPECTION AFTER INSTALLATION ............. 142
Disassembly and Assembly ................................. 143
DISASSEMBLY ................................................. 143
ASSEMBLY ....................................................... 143
INSPECTION AFTER DISASSEMBLY ............. 143
Turbocharger ........................................................ 144
ROTOR SHAFT CLEARANCE ......................... 144
ROTOR SHAFT END PLAY .............................. 144
TURBINE WHEEL ............................................. 145
COMPRESSOR WHEEL .................................. 145
TURBOCHARGER BOOST CONTROL ACTU-
ATOR ................................................................ 145
TROUBLE DIAGNOSIS OF TURBOCHARGER . 146OIL PAN AND OIL STRAINER ...............................147
Removal and Installation ......................................147
REMOVAL .........................................................147
INSPECTION AFTER REMOVAL .....................149
INSTALLATION .................................................149
INSPECTION AFTER INSTALLATION ..............151
GLOW PLUG ..........................................................152
Removal and Installation ......................................152
REMOVAL .........................................................152
INSTALLATION .................................................152
VACUUM PUMP ......................................................153
Removal and Installation ......................................153
INSPECTION BEFORE REMOVAL ..................153
REMOVAL .........................................................153
INSTALLATION .................................................154
INSPECTION AFTER INSTALLATION ..............155
Disassembly and Assembly ..................................155
DISASSEMBLY .................................................155
ASSEMBLY .......................................................156
INJECTION TUBE AND FUEL INJECTOR ............157
Removal and Installation ......................................157
REMOVAL .........................................................157
INSTALLATION .................................................159
INSPECTION AFTER INSTALLATION ..............160
FUEL PUMP ............................................................161
Removal and Installation ......................................161
REMOVAL .........................................................161
INSPECTION AFTER REMOVAL .....................165
INSTALLATION .................................................165
ROCKER COVER ...................................................168
Removal and Installation ......................................168
REMOVAL .........................................................168
INSTALLATION .................................................169
INSPECTION AFTER INSTALLATION ..............169
CAMSHAFT ............................................................170
Removal and Installation ......................................170
REMOVAL .........................................................170
INSPECTION AFTER REMOVAL .....................171
INSTALLATION .................................................174
Valve Clearance ...................................................175
INSPECTION ....................................................175
ADJUSTMENTS ................................................177
SECONDARY TIMING CHAIN ................................180
Removal and Installation ......................................180
REMOVAL .........................................................180
INSPECTION AFTER REMOVAL .....................182
INSTALLATION .................................................182
PRIMARY TIMING CHAIN ......................................185
Removal and Installation ......................................185
REMOVAL .........................................................187
INSPECTION AFTER REMOVAL .....................190
INSTALLATION .................................................190
CYLINDER HEAD ...................................................196
On-Vehicle Service ...............................................196
CHECKING COMPRESSION PRESSURE .......196
Removal and Installation ......................................197
REMOVAL .........................................................197
INSPECTION AFTER REMOVAL .....................198

PRIMARY TIMING CHAIN
EM-187
[YD22DDTi]
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REMOVAL
1. Remove engine coolant reservoir tank. Refer to CO-34, "RADIATOR" .
2. Remove charge air cooler. Refer to EM-135, "
Removal and Installation" .
3. Remove air cleaner and air duct. Refer to EM-133, "
Removal and Installation" .
4. Remove rocker cover. Refer to EM-168, "
Removal and Installation" .
5. Remove RH engine mounting insulator and bracket. Refer to EM-208, "
Removal and Installation" .
6. Pull power steering reservoir tank out of brackets to move power steering piping. Refer to PS-34,
"HYDRAULIC LINE" .
CAUTION:
To avoid removing power steering reservoir tank out of brackets move it with power steering pip-
ing aside.
7. Remove oil pan (upper and lower). Refer to EM-147, "
Removal and Installation" .
8. Remove oil filter bracket. Refer to LU-26, "
OIL FILTER BRACKET" .
9. Remove fuel injector. Refer to EM-157, "
Removal and Installation" .
10. Remove secondary timing chain and associated parts. Refer to EM-180, "
Removal and Installation" .
11. When removing rear chain case, remove camshaft sprockets. Refer to EM-170, "
Removal and Installa-
tion" .
12. Remove crankshaft pulley.
a. Hold crankshaft pulley with the pulley holder (special service
tool).
b. Loosen crankshaft pulley fixing bolt and pull out the bolt approx-
imately 10 mm (0.39 in).
c. Using the pulley puller (special service tool), remove crankshaft
pulley.

Use two M6 bolts with approx. 60 mm (2.36 in) shank length
for securing crankshaft pulley.
13. Remove oil pump housing.
10. O-ring 11. Chain guide 12. Tension guide
13. Spacer 14. Gasket 15. Front chain case
16. Rubber washer 17. Crankshaft pulley 18. Front oil seal
19. Power steering oil pump cover 20. Oil pump housing 21. Primary timing chain
22. Oil pump drive spacer 23. Crankshaft sprocket 24. Secondary timing chain
25. Rear chain case 26. Power steering oil pump 27. Key
JEM131G
JEM132G

EC-9
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ECA
Wiring Diagram .................................................... 793
Diagnostic Procedure ........................................... 794
Component Inspection ......................................... 796
Removal and Installation ...................................... 797
IGNITION SIGNAL .................................................. 798
Component Description ........................................ 798
Wiring Diagram .................................................... 799
Diagnostic Procedure ........................................... 802
Component Inspection ......................................... 807
Removal and Installation ...................................... 808
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE ................................................. 809
Description ........................................................... 809
CONSULT-II Reference Value in Data Monitor Mode
. 809
Wiring Diagram .................................................... 810
Diagnostic Procedure ........................................... 812
Component Inspection ......................................... 815
Removal and Installation ...................................... 815
PNP SWITCH .......................................................... 816
Component Description ........................................ 816
CONSULT-II Reference Value in Data Monitor Mode
. 816
Wiring Diagram .................................................... 817
Diagnostic Procedure ........................................... 818
INJECTOR CIRCUIT ............................................... 820
Component Description ........................................ 820
CONSULT-II Reference Value in Data Monitor Mode
. 820
Wiring Diagram .................................................... 821
Diagnostic Procedure ........................................... 822
Component Inspection ......................................... 825
Removal and Installation ...................................... 825
VIAS ........................................................................ 826
Description ........................................................... 826
CONSULT-II Reference Value in Data Monitor Mode
. 827
Wiring Diagram .................................................... 828
Diagnostic Procedure ........................................... 830
Component Inspection ......................................... 833
Removal and Installation ...................................... 834
FUEL PUMP CIRCUIT ............................................ 835
Description ........................................................... 835
CONSULT-II Reference Value in Data Monitor Mode
. 835
Wiring Diagram .................................................... 836
Diagnostic Procedure ........................................... 839
Component Inspection ......................................... 842
Removal and Installation ...................................... 842
REFRIGERANT PRESSURE SENSOR ................. 843
Component Description ........................................ 843
Wiring Diagram .................................................... 844
Diagnostic Procedure ........................................... 845
Removal and Installation ...................................... 847
ELECTRICAL LOAD SIGNAL ................................ 848
CONSULT-II Reference Value in Data Monitor Mode
. 848
Wiring Diagram .................................................... 849
Diagnostic Procedure ........................................... 856MI & DATA LINK CONNECTORS ...........................861
Wiring Diagram .....................................................861
Wiring Diagram – ..................................................863
EVAPORATIVE EMISSION SYSTEM .....................865
Description ............................................................865
Component Inspection ..........................................868
POSITIVE CRANKCASE VENTILATION ...............870
Description ............................................................870
Component Inspection ..........................................870
SERVICE DATA AND SPECIFICATIONS (SDS) ....872
Fuel Pressure .......................................................872
Idle Speed and Ignition Timing .............................872
Mass Air Flow Sensor ...........................................872
Intake Air Temperature Sensor .............................872
Engine Coolant Temperature Sensor ...................872
Heated Oxygen Sensor 1 Heater .........................872
Heated Oxygen sensor 2 Heater ..........................872
Crankshaft Position Sensor (POS) .......................872
Camshaft Position Sensor (PHASE) ....................873
Throttle Control Motor ...........................................873
Injector ..................................................................873
Fuel Pump ............................................................873
YD (WITH EURO-OBD)
INDEX FOR DTC .....................................................874
Alphabetical Index ................................................874
DTC No. Index ......................................................876
PRECAUTIONS ......................................................878
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................878
On Board Diagnostic (OBD) System of Engine ....878
Precautions ...........................................................878
Wiring Diagrams and Trouble Diagnosis ..............881
PREPARATION .......................................................882
Special Service Tools ...........................................882
Commercial Service Tools ....................................882
ENGINE CONTROL SYSTEM ................................883
System Diagram ...................................................883
Vacuum Hose Drawing .........................................884
System Chart ........................................................885
Fuel Injection Control System ...............................885
Fuel Injection Timing Control System ...................887
Air Conditioning Cut Control .................................887
Fuel Cut Control (At No Load & High Engine Speed) .887
Crankcase Ventilation System ..............................888
CAN Communication ............................................888
BASIC SERVICE PROCEDURE .............................890
Fuel Filter ..............................................................890
Fuel Pump Learning Value Clearing .....................890
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..........892
Introduction ...........................................................892
Three Trip Detection Logic and One Trip Detection
Logic .....................................................................892
Emission-related Diagnostic Information ..............892
NATS (Nissan Anti-theft System) .........................896
Malfunction Indicator (MI) .....................................896
OBD System Operation Chart ..............................898

EC-14 Crankshaft Position Sensor .................................1204
Camshaft Position Sensor ...................................1204
YD (WITHOUT EURO-OBD)
INDEX FOR DTC ....................................................1205
Alphabetical Index ...............................................1205
DTC No. Index .....................................................1206
PRECAUTIONS ......................................................1209
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ..............................................................1209
On Board Diagnostic (OBD) System of Engine ...1209
Precautions ..........................................................1209
Wiring Diagrams and Trouble Diagnosis .............1212
PREPARATION ......................................................1213
Special Service Tools ..........................................1213
Commercial Service Tools ...................................1213
ENGINE CONTROL SYSTEM ...............................1214
System Diagram ..................................................1214
Vacuum Hose Drawing ........................................1215
System Chart .......................................................1216
Fuel Injection Control System ..............................1216
Fuel Injection Timing Control System ..................1218
Air Conditioning Cut Control ................................1218
Fuel Cut Control (At No Load & High Engine Speed) 1218
Crankcase Ventilation System .............................1219
CAN Communication ...........................................1219
BASIC SERVICE PROCEDURE ............................1221
Fuel Filter .............................................................1221
Fuel Pump Learning Value Clearing ....................1221
ON BOARD DIAGNOSTIC (OBD) SYSTEM .........1223
DTC and MI Detection Logic ...............................1223
Diagnostic Trouble Code (DTC) ..........................1223
Freeze Frame Data ..............................................1223
NATS (Nissan Anti-theft System) .........................1224
Malfunction Indicator (MI) ....................................1224
TROUBLE DIAGNOSIS .........................................1227
Trouble Diagnosis Introduction ............................1227
DTC Inspection Priority Chart ..............................1230
Basic Inspection ..................................................1231
Symptom Matrix Chart .........................................1235
Engine Control Component Parts Location .........1239
Circuit Diagram ....................................................1243
ECM Harness Connector Terminal Layout ..........1245
ECM Terminals And Reference Value .................1245
CONSULT-II Function ..........................................1251
CONSULT-II Reference Value in Data Monitor Mode
1257
Major Sensor Reference Graph in Data Monitor
Mode ....................................................................1259
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ......................................................................1260
Description ...........................................................1260
Diagnostic Procedure ..........................................1260
MAIN POWER SUPPLY AND GROUND CIRCUIT 1261
ECM Terminals and Reference Value ..................1261
Wiring Diagram ....................................................1262
Diagnostic Procedure ..........................................1263Component Inspection .........................................1266
Ground Inspection ................................................1267
DTC U1000 CAN COMMUNICATION LINE ...........1268
Description ...........................................................1268
On Board Diagnosis Logic ...................................1268
DTC Confirmation Procedure ...............................1268
Wiring Diagram ....................................................1269
Diagnostic Procedure ...........................................1270
DTC P0016 CKP - CMP CORRELATION ..............1271
On Board Diagnosis Logic ...................................1271
DTC Confirmation Procedure ...............................1271
Diagnostic Procedure ...........................................1271
DTC P0088 FUEL SYSTEM ...................................1273
On Board Diagnosis Logic ...................................1273
DTC Confirmation Procedure ...............................1273
Diagnostic Procedure ...........................................1273
Removal and Installation ......................................1274
DTC P0089 FUEL PUMP .......................................1275
On Board Diagnosis Logic ...................................1275
DTC Confirmation Procedure ...............................1275
Diagnostic Procedure ...........................................1275
Removal and Installation ......................................1276
DTC P0093 FUEL SYSTEM ...................................1277
On Board Diagnosis Logic ...................................1277
DTC Confirmation Procedure ...............................1277
Diagnostic Procedure ...........................................1277
Component Inspection .........................................1278
Removal and Installation ......................................1279
DTC P0102, P0103 MAF SENSOR ........................1280
Component Description .......................................1280
CONSULT-II Reference Value in Data Monitor Mode
1280
ECM Terminals and Reference Value ..................1280
On Board Diagnosis Logic ...................................1280
DTC Confirmation Procedure ...............................1280
Wiring Diagram ....................................................1282
Diagnostic Procedure ...........................................1283
Component Inspection .........................................1285
Removal and Installation ......................................1285
DTC P0112, P0113 IAT SENSOR ...........................1286
Component Description .......................................1286
On Board Diagnosis Logic ...................................1286
DTC Confirmation Procedure ...............................1286
Wiring Diagram ....................................................1287
Diagnostic Procedure ...........................................1288
Component Inspection .........................................1290
Removal and Installation ......................................1290
DTC P0117, P0118 ECT SENSOR .........................1291
Description ...........................................................1291
On Board Diagnosis Logic ...................................1291
DTC Confirmation Procedure ...............................1291
Wiring Diagram ....................................................1293
Diagnostic Procedure ...........................................1294
Component Inspection .........................................1296
Removal and Installation ......................................1296
DTC P0122, P0123 APP SENSOR ........................1297
Description ...........................................................1297
CONSULT-II Reference Value in Data Monitor Mode
1297

EC-50
[QR (WITH EURO-OBD)]
BASIC SERVICE PROCEDURE


Fuel filter for clogging

Fuel pump

Fuel pressure regulator for clogging
If OK, replace fuel pressure regulator.
If NG, repair or replace.

TROUBLE DIAGNOSIS
EC-87
[QR (WITH EURO-OBD)]
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EC

1 - 6: The numbers refer to the order of inspection.Va l v e
mecha-
nismTiming chain
55555 55 5EM-44
CamshaftEM-53
Intake valve timing controlEM-44
Intake valve
3EM-67
Exhaust valve
Exhaust Exhaust manifold/Tube/Muffler/
Gasket
55555 55 5EM-23
, EX-
2Three way catalyst
Lubrica-
tionOil pan/Oil strainer/Oil pump/Oil
filter/Oil gallery
55555 55 52EM-25
, LU-
13 , LU-10 ,
LU-5
Oil level (Low)/Filthy oilLU-7
Cooling Radiator/Hose/Radiator filler cap
55555 55 25CO-12
Thermostat 5CO-22
Water pumpCO-20
Water galleryCO-7
Cooling fan 5CO-18
Coolant level (low)/Contaminated
coolantCO-9
NATS (Nissan Anti-theft System) 1 1EC-64 or
BL-108
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA