2003 NISSAN X-TRAIL low oil pressure

EC-678
[YD]
TROUBLE DIAGNOSIS
SYSTEM — Basic engine control systemSYMPTOM
Reference page
ROUGH IDLE/HUNTING IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEAT/HIGH ENGINE COOLANT TEMPERATURE EXCESSIVE FUEL CONSUMPTION EXCESSIVE OIL CONSUMPTION ABNORMAL SMOKE COLOR
DEAD BATTERY (UNDER CHARGE) Malfunction indicator illuminates. CanbedetectedbyCONSULT-II?
BLACK SMOKE WHITE SMOKE
Warranty symptom code AG AH AJ AK AL AM AP HA
Fuel supply pump 5 5 5 5 1 1 —
Fuelinjector 33344411EC-727
EDU (Electronic drive unit) 4 4 4 5 5 5 1 1EC-754
Glow system1EC-796
Engine body 3 3 3 3 1 3EM-102
EGR system3EC-803
Air cleaner and duct3MA-31
Fuel pressure relief valveEC-665
ENGINE CONTROL
Suction control valve circuit 4 4 4 4 1 1EC-772
Fuel injector circuit 1 1 1 1 1 1 1 1EC-727
EDU circuit 2 2 2 2 2 2 1 1EC-754
Mass air flow sensor circuit 1 1 1EC-706
Engine coolant temperature circuit 1 1 1 1 1EC-711
Vehicle speed sensor circuit11EC-744
Accelerator pedal position sensor circuit 1 1 1EC-715
Accelerator pedal released position switch
circuit11EC-783
Common rail fuel pressure sensor
circuit11EC-723
Crankshaft position sensor (TDC)
circuit11 11EC-734

EC-692
[YD]
TROUBLE DIAGNOSIS
3. Turn ignition switch ON.
4. Touch “START”.
5. Touch “ENGINE”.
6. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation Manual.
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
X: Applicable
SEF995X
PBIB0410E
ItemDIAGNOSTIC TEST MODE
SELF-DIAG
RESULTSDATA MONI-
TO RACTIVE
TEST
ENGINE CONTROL COMPONENT PARTS
INPUTCrankshaft position sensor (TDC)´´
Camshaft position sensor´
Engine coolant temperature sensor´´
Vehicle speed sensor´´
Fuel temperature sensor´´
Accelerator pedal position sensor 1´´
Accelerator pedal position sensor 2´´
Accelerator pedal released position switch´´
Common rail fuel pressure sensor´´
Park/neutral position (PNP) switch´
Mass air flow sensor´´
Battery voltage´´
Power steering oil pressure switch´
Stop lamp switch´
Absolute pressure sensor´´
Fuel injector adjustment resistor´
OUTPUTSuction control valve´´´
Fuel injector´´´
Glow relay´´
Cooling fan relay´´´
EGR volume control valve´´

TROUBLE DIAGNOSIS
EC-693
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EC
SELF-DIAGNOSTIC MODE
Regarding items detected in “SELF-DIAG RESULTS” mode, refer to —EC-654, "INDEX FOR DTC".
DATA MONITOR MODE
MONITOR ITEMECM
input
signalMain
signalsCONDITION SPECIFICATION
CKPS ·RPM (TDC) [rpm]´´
lThe engine speed computed from
the crankshaft position sensor (TDC)
signal is displayed.
COOLAN TEMP/S
[°C] or [°F]´´
lThe engine coolant temperature
(determined by the signal voltage of
the engine coolant temperature sen-
sor) is displayed.When the engine coolant temperature
circuit is open or short, ECM enters fail-
safe mode. The engine coolant temper-
ature determined by the ECM is dis-
played.
VHCL SPEED SE
[km/h] or [mph]´´
lThe vehicle speed computed form
the vehicle speed sensor signal is
displayed.
FUEL TEMP SEN [°C] or [°F]´´
lThe fuel temperature (determined by
the signal voltage of the fuel temper-
ature sensor) is displayed.
ACCEL POS SEN [V]´´
lThe accelerator pedal position sen-
sor 1 signal voltage is displayed.
ACCEL SEN 2 [V]´´
lThe accelerator pedal position sen-
sor 2 signal voltage is displayed.
OFF ACCEL SW [ON/OFF]´´
lindicates [ON/OFF] condition from
the accelerator pedal released posi-
tion switch signal.
ACT CR PRESS [MPa]´´
lThe common rail fuel pressure
(determined by the signal voltage of
the common rail fuel pressure sen-
sor) is displayed.
BATTERY VOLT [V]´´
lThe power supply voltage of ECM is
displayed.
P/N POSI SW [ON/OFF]´´
lIndicates [ON/OFF] condition from
the park/neutral position switch sig-
nal.
START SIGNAL [ON/OFF]´´
lindicates [ON/OFF] condition from
the starter signal.
PW/ST SIGNAL [ON/OFF]´
lindicates [ON/OFF] condition from
the power steering oil pressure
switch signal.
BRAKE SW [ON/OFF]´´
lindicates [ON/OFF] condition from
thestoplampswitchsignal.
IGN SW [ON/OFF]´´
lIndicates [ON/OFF] condition from
ignition switch signal.
MAS AIR/FL SE [V]´´
lThe signal voltage of the mass air
flow sensor is displayed.
SUCTION CV [°CA]´
lIndicates [°CA] of suction control
valve operating angle.
MAIN INJ WID [msec]´
lIndicates the actual fuel injection
pulse width compensated by ECM
according to the input signals.
GLOW RLY [ON/OFF]´
lThe glow relay control condition
(determined by ECM according to
the input signal) is displayed.

EC-762
[YD]
DTC P1217 OVERHEAT (COOLING SYSTEM)
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant following the procedure in theMA-27,
"Changing Engine Coolant". Also, replace the engine oil.
1. Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure to
use coolant with the proper mixture ratio. Refer toMA-19, "
Engine Coolant Mixture Ratio".
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckEBS004QV
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WAR NIN G:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around the cap. Carefully remove the cap by turning it a quarter turn to allow built-
up pressure to escape. Then turn the cap all the way off.
WITH CONSULT-II
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go toEC-764,
"Diagnostic Procedure".
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go toEC-764,
"Diagnostic Procedure".
3. Turn ignition switch “ON”.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II and make sure that cooling fans operate when touching
“HIGH” or “LOW”.
If NG, go toEC-764, "
Diagnostic Procedure".
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1217
lCooling fan does not operate properly (Overheat).
lCooling fan system does not operate properly
(Overheat).
lEngine coolant was not added to the system using
the proper filling method.
lHarness or connectors
(The cooling fan circuit is open or shorted.)
lCooling fan
lRadiator hose
lRadiator
lRadiator cap
lWater pump
lThermostat
lEngine coolant temperature sensor
For more information, refer toEC-770, "
Main 12
Causes of Overheating".
AEC640
S E F 111 X

EC-822
[YD]
POWER STEERING OIL PRESSURE SWITCH
Diagnostic Procedure
EBS003PV
1.CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Check “PW/ST SIGNAL” in “DATA MONITOR” mode with CON-
SULT-II under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2.CHECK POWER STEERING OIL PRESSURE SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect power steering oil pressure switch harness connec-
tor.
3. Check harness continuity between power steering oil pressure
switch terminal 2 and engine ground. Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to power in harness or con-
nectors.
3.CHECK POWER STEERING OIL PRESSURE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal E12 and power steering oil pressure switch terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK POWER STEERING OIL PRESSURE SWITCH
Refer toEC-823, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace power steering oil pressure switch.
Conditions PW/ST SIGNAL
Steering in neutral position OFF
Steering is turned ON
PBIB0434E
Continuity should exist.
PBIB0375E
Continuity should exist.

POWER STEERING OIL PRESSURE SWITCH
EC-823
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EC
5.CHECK INTERMITTENT INCIDENT
Refer toEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
Component InspectionEBS003PW
POWER STEERING OIL PRESSURE SWITCH
1. Disconnect power steering oil pressure switch harness connector and then start engine.
2. Check continuity between power steering oil pressure switch ter-
minal 1 and 2 under the following conditions.
Removal and InstallationEBS008ZH
POWER STEERING OIL PRESSURE SWITCH
Refer toPS-33, "HYDRAULIC LINE".
Conditions Continuity
Steering wheel is being fully turned. Yes
Steering wheel is not being turned. No
PBIB0435E

EM-2
INSPECTION AFTER REMOVAL ........................ 38
Valve Clearance ...................................................... 40
INSPECTION ....................................................... 40
ADJUSTMENT .................................................... 41
TIMING CHAIN .......................................................... 43
Removal and Installation ........................................ 43
REMOVAL ........................................................... 44
INSPECTION AFTER REMOVAL ........................ 47
INSTALLATION .................................................... 48
CYLINDER HEAD ..................................................... 52
On-Vehicle Service ................................................. 52
CHECKING COMPRESSION PRESSURE ......... 52
Removal and Installation ........................................ 53
REMOVAL ........................................................... 53
INSPECTION AFTER REMOVAL ........................ 54
INSTALLATION .................................................... 54
Disassembly and Assembly .................................... 55
DISASSEMBLY ................................................... 55
ASSEMBLY ......................................................... 56
Inspection After Disassembly ................................. 56
CYLINDER HEAD DISTORTION ........................ 56
VALVE DIMENSIONS .......................................... 57
VALVE GUIDE CLEARANCE .............................. 57
VALVE GUIDE REPLACEMENT ......................... 57
VALVE SEAT CONTACT ..................................... 58
VALVE SEAT REPLACEMENT ........................... 58
VALVE SPRING SQUARENESS ......................... 60
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD ............................... 60
ENGINE ASSEMBLY ................................................ 61
Removal and Installation ........................................ 61
REMOVAL ........................................................... 61
INSTALLATION .................................................... 63
INSPECTION AFTER INSTALLATION ................ 63
CYLINDER BLOCK ................................................... 64
Disassembly and Assembly .................................... 64
DISASSEMBLY ................................................... 65
ASSEMBLY ......................................................... 69
How to Select Piston and Bearing .......................... 73
DESCRIPTION .................................................... 73
HOW TO SELECT PISTON ................................. 74
HOW TO SELECT CONNCTING ROD BEARING... 74
HOW TO SELECT MAIN BEARING .................... 77
Inspection After Disassembly ................................. 80
CRANKSHAFT SIDE CLEARANCE .................... 80
CONNECTING ROD SIDE CLEARANCE ........... 81
PISTON AND PISTON PIN CLEARANCE .......... 81
PISTON RING SIDE CLEARANCE ..................... 82
PISTON RING END GAP .................................... 82
CONNECTING ROD BEND AND TORSION ....... 82
CONNECTING ROD BEARING (BIG END) ........ 83
CONNECTING ROD BUSHING OIL CLEAR-
ANCE (SMALL END) ........................................... 83
CYLINDER BLOCK DISTORTION ...................... 84
INNER DIAMETER OF MAIN BEARING HOUS-
ING ...................................................................... 85
PISTON TO CYLINDER BORE CLEARANCE .... 85
OUTER DIAMETER OF CRANKSHAFT JOUR-NAL ......................................................................86
OUTER DIAMETER OF CRANKSHAFT PIN ......86
OUT-OF-ROUND AND TAPER OF CRANK-
SHAFT .................................................................87
CRANKSHAFT RUNOUT ....................................87
OIL CLEARANCE OF CONNECTING ROD
BEARING .............................................................87
OIL CLEARANCE OF MAIN BEARING ...............88
CRUSH HEIGH OF MAIN BEARING ...................88
OUTER DIAMETER OF LOWER CYLINDER
BLOCK MOUNTING BOLT ..................................88
OUTER DIAMETER OF CONNECTING ROD
BOLT ....................................................................89
MOVEMENT AMOUNT OF FLYWHEEL (M/T
MODELS) .............................................................89
SERVICE DATA AND SPECIFICATIONS (SDS) ......90
Standard and Limit ..................................................90
GENERAL SPECIFICATIONS .............................90
INTAKE MANIFOLD AND EXHAUST MANI-
FOLD ...................................................................90
DRIVE BELTS ......................................................90
CYLINDER HEAD ................................................91
VALVE ..................................................................91
CAMSHAFT AND CAMSHAFT BEARING ...........94
CYLINDER BLOCK ..............................................94
PISTON, PISTON RING AND PISTON PIN ........95
CONNECTING ROD ............................................96
CRANKSHAFT .....................................................97
MAIN BEARING ...................................................98
CONNECTING ROD BEARING ...........................99
Tightening Torque ................................................. 100
YD22DDTi
PRECAUTIONS ....................................................... 102
Precautions for Drain Coolant ............................... 102
Precautions for Disconnecting Fuel Piping ........... 102
Precautions for Removal and Disassembly .......... 102
Precautions for Inspection, Repair and Replace-
ment ...................................................................... 102
Precautions for Assembly and Installation ............ 102
Parts Requiring Angular Tightening ...................... 102
Precautions for Liquid Gasket ............................... 103
REMOVAL OF LIQUID GASKET SEALING ...... 103
LIQUID GASKET APPLICATION PROCEDURE. 103
PREPARATION ....................................................... 104
Special Service Tools ............................................ 104
Commercial Service Tools .................................... 106
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ............................................ 108
NVH Troubleshooting —Engine Noise .................. 108
Use the Chart Below to Help You Find the Cause
of the Symptom. .................................................... 109
DRIVE BELTS ..........................................................110
Checking Drive Belts .............................................110
Tension Adjustment ...............................................110
AIR CONDITIONER COMPRESSOR BELT ...... 111

EM-3
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EMA ALTERNATOR AND WATER PUMP BELT ....... . 111
Removal and Installation ...................................... . 111
REMOVAL ......................................................... . 111
INSTALLATION ................................................. . 111
AIR CLEANER AND AIR DUCT .............................. 112
Removal and Installation ....................................... 112
REMOVAL .......................................................... 112
INSTALLATION .................................................. 112
CHANGING AIR CLEANER ELEMENT ............. 112
CHARGE AIR COOLER .......................................... 114
Removal and Installation ....................................... 114
REMOVAL .......................................................... 114
INSPECTION AFTER REMOVAL ...................... 114
INSTALLATION .................................................. 114
INTAKE MANIFOLD ................................................ 115
Removal and Installation ....................................... 115
REMOVAL .......................................................... 115
INSPECTION AFTER REMOVAL ...................... 116
INSTALLATION .................................................. 116
INSPECTION AFTER INSTALLATION .............. 117
CATALYST ............................................................... 118
Removal and Installation ....................................... 118
REMOVAL .......................................................... 118
INSTALLATION .................................................. 118
EXHAUST MANIFOLD AND TURBOCHARGER ... 119
Removal and Installation ....................................... 119
REMOVAL .......................................................... 119
INSTALLATION ................................................. 120
INSPECTION AFTER INSTALLATION ............. 120
Disassembly and Assembly ................................. 121
REMOVAL ......................................................... 121
INSPECTION AFTER REMOVAL ..................... 121
Turbocharger ........................................................ 122
ROTOR SHAFT CLEARANCE ......................... 122
ROTOR SHAFT END PLAY .............................. 122
TURBINE WHEEL ............................................. 123
COMPRESSOR WHEEL .................................. 123
WASTEGATE VALVE ACTUATOR ................... 123
TROUBLE DIAGNOSIS OF TURBOCHARGER. 123
OIL PAN AND OIL STRAINER ............................... 125
Removal and Installation ...................................... 125
REMOVAL ......................................................... 125
INSPECTION AFTER REMOVAL ..................... 127
INSTALLATION ................................................. 127
INSPECTION AFTER INSTALLATION ............. 129
GLOW PLUG .......................................................... 130
Removal and Installation ...................................... 130
REMOVAL ......................................................... 130
INSTALLATION ................................................. 130
VACUUM PUMP ..................................................... 131
Removal and Installation ...................................... 131
INSPECTION BEFORE REMOVAL .................. 131
REMOVAL ......................................................... 131
INSTALLATION ................................................. 132
INSPECTION AFTER INSTALLATION ............. 132
Disassembly and Assembly ................................. 133
DISASSEMBLY ................................................. 133
ASSEMBLY ....................................................... 133INJECTION TUBE AND FUEL INJECTOR ............135
Removal and Installation ......................................135
REMOVAL .........................................................135
INSTALLATION .................................................136
INSPECTION AFTER INSTALLATION ..............137
FUEL SUPPLY PUMP .............................................138
Removal and Installation ......................................138
REMOVAL .........................................................138
INSPECTION AFTER REMOVAL .....................143
INSTALLATION .................................................143
ROCKER COVER ...................................................147
Removal and Installation ......................................147
REMOVAL .........................................................147
INSTALLATION .................................................148
INSPECTION AFTER INSTALLATION ..............148
CAMSHAFT ............................................................149
Removal and Installation ......................................149
REMOVAL .........................................................149
INSPECTION AFTER REMOVAL .....................150
INSTALLATION .................................................153
Valve Clearance ...................................................154
INSPECTION ....................................................154
ADJUSTMENTS ................................................155
SECONDARY TIMING CHAIN ................................158
Removal and Installation ......................................158
REMOVAL .........................................................158
INSPECTION AFTER REMOVAL .....................160
INSTALLATION .................................................161
PRIMARY TIMING CHAIN ......................................163
Removal and Installation ......................................163
REMOVAL .........................................................165
INSPECTION AFTER REMOVAL .....................168
INSTALLATION .................................................168
CYLINDER HEAD ...................................................173
On-Vehicle Service ...............................................173
CHECKING COMPRESSION PRESSURE .......173
Removal and Installation ......................................174
REMOVAL .........................................................174
INSPECTION AFTER REMOVAL .....................175
INSTALLATION .................................................175
Disassembly and Assembly ..................................178
DISASSEMBLY .................................................178
ASEMBLY ..........................................................179
INSPECTION AFTER DISASSEMBLY ..............179
ENGINE ASSEMBLY ..............................................184
Removal and Installation ......................................184
REMOVAL .........................................................184
INSTALLATION .................................................186
INSPECTION AFTER INSTALLATION ..............186
CYLINDER BLOCK ................................................188
Disassembly and Assembly ..................................188
DISASSEMBLY .................................................189
ASSEMBLY .......................................................193
How to Select Piston and Bearing ........................197
DESCRIPTION ..................................................197
HOW TO SELECT PISTON ..............................197
HOW TO SELECT CONNECTING ROD BEAR-
ING ....................................................................198