2001 NISSAN X-TRAIL engine control

EXHAUST MANIFOLD AND TURBOCHARGER
EM-127
[YD22DDTi]
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EXHAUST MANIFOLD AND TURBOCHARGERPFP:14004
Removal and InstallationEBS00LRH
REMOVAL
1. Drain engine coolant. Refer to CO-29, "Changing Engine Coolant" .
2. Remove charge air cooler. Refer to EM-122, "
Removal and Installation" .
3. Remove air duct and air inlet pipe. Refer to EM-120, "
Removal and Installation" .
4. Remove engine undercover.
5. Remove radiator upper and lower hoses.
6. Remove radiator fan. Refer to CO-33, "
Disassembly and Assembly Radiator Fan" .
7. Remove radiator mount bracket and radiator. Refer to CO-32, "
Removal and Installation" .
8. Remove water inlet pipe.
9. Disconnect exhaust front tube. Refer to EX-2, "
EXHAUST SYSTEM" .
10. Remove catalyst. Refer to EM-126, "
Removal and Installation" .
11. Remove exhaust manifold cover.
12. Remove insulator.
13. Each wiring and piping (disconnect/move)
PBIC1228E
1. Electronic EGR volume control valve 2. Gasket 3. EGR Cooler
4. Air inlet pipe 5.Exhaust manifold & turbocharger
assembly6. Oil return hose
7. Turbo insulator 8. Exhaust manifold insulator 9. Air inlet pipe

EM-140
[YD22DDTi]
VACUUM PUMP
MODELS PRODUCED SINCE APRIL 2001
INSPECTION BEFORE REMOVAL
1. Disconnect vacuum hose, and connect a vacuum gauge via 3-way connector.
●Disconnect point where vacuum from vacuum pump can be measured directly and install 3-way con-
nector.
2. Start engine and measure generated vacuum at idle speed.
●If out of standard, check for air suction in vacuum route, and measure again.
●If still outside of standard, replace vacuum pump.
REMOVAL
1. Drain engine coolant. Refer to CO-29, "Changing Engine Coolant" .
2. Remove air duct and air cleaner case. Refer to EM-120, "
Removal and Installation" .
3. Remove charge air cooler and bracket. Refer to EM-122, "
Removal and Installation" .
4. Disconnect harness connector from fuel injector.
5. Remove injection tube. Refer to EM-144, "
Removal and Installation" .
6. Remove fuel injector oil seal.
7. Remove rocker cover. Refer to EM-156, "
Removal and Installation" .
8. Remove spill tube. Refer to EM-144, "
Removal and Installation" .
9. Remove nozzle support from NO.2 cylinder and fuel injector. Refer to EM-144, "
Removal and Installation"
.
10. Remove air inlet pipes. Refer to EM-127, "
Removal and Installation" .
11. Remove exhaust manifold cover.
12. Disconnect electronic EGR volume control valve water hose and harness.
13. Disconnect heater hose.
14. Remove EGR cooler.
SBIA0325E
Standard:
– 86.6 to – 101.3 kPa (– 866 to – 1,013 mbar, – 650 to – 760 mmHg, – 25.59 to – 29.92 inHg)

ENGINE OIL
LU-7
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ENGINE OILPFP:KLA92
InspectionEBS00KO3
ENGINE OIL LEVEL
●Before starting the engine, put vehicle horizontally then check
the engine oil level. If the engine is already started, stop it and
allow 10 minutes before checking.
●Check that the engine oil level is within the range shown in the
figure.
●If it is out of range, adjust it.
ENGINE OIL APPEARANCE
●Check the engine oil for white turbidity or remarkable contamination.
●If the engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
Find the cause and repair.
ENGINE OIL LEAKAGE
Check for engine oil leakage around the following area.
●Oil pan
●Oil pan drain plug
●Oil pressure switch
●Oil filter
●Oil cooler
●Intake valve timing control cover and intake valve timing control solenoid valve
●Front cover
●Mating surface between cylinder block and cylinder head
●Mating surface between cylinder head and rocker cover
●Crankshaft oil seal.
OIL PRESSURE CHECK
WARNING:
●Be careful not to burn yourself, as the engine oil is hot.
●Engine oil pressure check should be done in “ Parking
position” (A/T model) or “Neutral position” (M/T model).
1. Check engine oil level. Refer to LU-7, "
ENGINE OIL LEVEL" .
2. Remove the undercover.
3. Remove the oil pressure switch to connect the oil pressure
gauge.
4. After warming up the engine, check that oil pressure corre-
sponding to the engine speed is produced.
Engine oil pressure [Engine oil temperature at 80 °C (176 °F)]
5. After checking, install the oil pressure switch as follows.
a. Remove old sealant adhering to the switch and engine.
b. Apply thread sealant.
Use Genuine Liquid Gasket or equivalent.
PBIC0249E
KBIA0275E
Engine speed (rpm) Idle speed 2,000 6,000
Engine pressure
kPa (bar, kg/cm
2 , psi)Approx. 98 (0.98, 1.0, 14) or more Approx. 294 (2.9, 3.0, 43) or more Approx. 392 (3.9, 4.0, 57) or more

CO-1
ENGINE COOLING SYSTEM
B ENGINE
CONTENTS
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SECTION
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ENGINE COOLING SYSTEM
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PRECAUTIONS .......................................................... 3
Precautions For Liquid Gasket ................................. 3
REMOVAL OF LIQUID GASKET .......................... 3
LIQUID GASKET APPLICATION PROCEDURE ..... 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
OVERHEATING CAUSE ANALYSIS .......................... 5
Troubleshooting Chart .............................................. 5
COOLING SYSTEM .................................................... 7
Cooling Circuit .......................................................... 7
System Drawing ....................................................... 8
ENGINE COOLANT .................................................... 9
Inspection ................................................................. 9
LEVEL CHECK ..................................................... 9
CHECKING RADIATOR SYSTEM FOR LEAKS ..... 9
Changing Engine Coolant ........................................ 9
DRAINING ENGINE COOLANT ........................... 9
REFILLING ENGINE COOLANT ........................ 10
FLUSHING COOLING SYSTEM ......................... 10
RADIATOR .................................................................11
Removal and Installation ......................................... 11
REMOVAL ............................................................ 11
INSTALLATION .................................................... 11
Disassembly and Assembly Radiator Fan ............. 12
DISASSEMBLY ................................................... 12
ASSEMBLY ......................................................... 12
Checking Radiator Cap .......................................... 12
Checking Radiator .................................................. 13
RADIATOR (ALUMINUM TYPE) .............................. 14
Disassembly and Assembly ................................... 14
PREPARATION ................................................... 14
DISASSEMBLY ................................................... 14
ASSEMBLY ......................................................... 15
INSPECTION ...................................................... 17WATER PUMP .......................................................... 18
Removal and Installation ........................................ 18
REMOVAL ........................................................... 18
INSPECTION AFTER REMOVAL ....................... 19
INSTALLATION ................................................... 19
INSPECTION AFTER INSTALLATION ................ 19
THERMOSTAT AND WATER CONTROL VALVE .... 20
Removal and Installation ........................................ 20
REMOVAL ........................................................... 20
INSPECTION AFTER REMOVAL ....................... 21
INSTALLATION ................................................
... 21
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 22
Standard and Limit .................................................. 22
CAPACITY ........................................................... 22
THERMOSTAT .................................................... 22
WATER CONTROL VALVE ................................. 22
RADIATOR ....................................................... ... 22
Tightening Torque ................................................... 22
YD22DDTi
PRECAUTIONS ........................................................ 23
Precautions For Liquid Gasket ............................... 23
REMOVAL OF LIQUID GASKET ......................... 23
LIQUID GASKET APPLICATION PROCEDURE ... 23
PREPARATION ......................................................... 24
Special Service Tools ............................................. 24
OVERHEATING CAUSE ANALYSIS ........................ 25
Troubleshooting Chart ............................................ 25
COOLING SYSTEM .................................................. 27
Cooling Circuit ........................................................ 27
System Drawing ..................................................... 28
ENGINE COOLANT .................................................. 29
Inspection ............................................................... 29
LEVEL CHECK .................................................... 29
CHECKING RADIATOR SYSTEM FOR LEAKS ... 29
Changing Engine Coolant ....................................... 29
DRAINING ENGINE COOLANT .......................... 29
REFILLING ENGINE COOLANT ......................... 30
FLUSHING COOLING SYSTEM ......................... 31

CO-10
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ENGINE COOLANT
REFILLING ENGINE COOLANT
1. Install reservoir tank, radiator drain plug and cylinder block drain plug.
●Apply sealant to the thread of cylinder block drain plug.
Use Genuine Liquid Gasket or equivalent.
2. Fill radiator and reservoir tank to specified level.
●Use genuine Nissan engine coolant or equivalent in its
quality. Refer to MA-16, "
RECOMMENDED FLUIDS AND
LUBRICANTS" .
●Pour engine coolant slowly of less than 2 (1-3/4 lmp qt)
a minute to allow air in system to escape.
3. Warm up engine to normal operating temperature without radia-
tor cap installed.
●If engine coolant overflows radiator filler hole, install
radiator cap.
4. Run engine at 3,000 rpm for 10 seconds and return to idle speed
with radiator cap installed.
●Repeat two or three times.
Watch engine coolant temperature gauge so as not to overheat the engine.
5. Stop engine and cool down to less than approximately 50°C(122°F).
●Cool down using a fan to reduce the time.
●If necessary, refill radiator up to filler neck with engine coolant.
6. Refill reservoir tank to MAX level line with engine coolant.
7. Repeat steps 4 through 6 two or more times with radiator cap installed until engine coolant level no longer
drops.
8. Check cooling system for leaks with engine running.
9. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between COOL and WARM.
●Sound may be noticeable at heater unit.
10. If sound is heard, bleed air from cooling system by repeating steps 4 through 6 until engine coolant level
no longer drops.
●Clean excess engine coolant from engine.
FLUSHING COOLING SYSTEM
1. Fill radiator and reservoir tank with water and reinstall radiator cap.
2. Run engine and warm it up to normal operating temperature.
3. Rev engine two or three times under no-load.
4. Stop engine and wait until it cools down.
5. Drain water.
6. Repeat steps 1 through 5 until clear water begins to drain from radiator. Cylinder block drain plug:
: 7.8 - 11.8 N·m (0.8 -1.2 kg-m , 69 - 104 in-lb)
Engine coolant capacity (With reservoir tank):

Approx. 7.1 (6-1/4 Imp qt)
SMA182B
Reservoir tank: 0.6 (1/2 lmp qt)
SMA412B

CO-20
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THERMOSTAT AND WATER CONTROL VALVE
THERMOSTAT AND WATER CONTROL VALVE
PFP:21200
Removal and InstallationEBS00KOO
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
engine coolant escaping from the radiator.
REMOVAL
Thermostat Removal
1. Drain engine coolant. Refer to CO-9, "DRAINING ENGINE COOLANT" .
CAUTION:
Perform when the engine cold.
2. Disconnect radiator lower hose at water inlet side.
3. Remove water inlet and thermostat.
Water Control Valve Removal
1. Drain engine coolant. Refer to CO-9, "DRAINING ENGINE COOLANT" .
2. Disconnect upper radiator hose, heater pipe and heater hose at water outlet side.
3. Remove water outlet.
4. Remove water control valve.
PBIC0239E
1. Thermostat 2. Water inlet 3. Water control valve
4. Water outlet 5. Heater hose 6. Engine coolant temperature sensor
7. Heater pipe

THERMOSTAT AND WATER CONTROL VALVE
CO-21
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INSPECTION AFTER REMOVAL
●Place a string so that it is caught in the valves of the thermostat
and water control valve. Immerse fully in a container filled with
water. Heat while stirring. (The example in the figure shows the
thermostat.)
●The valve opening temperature is the temperature at which the
valve opens and the falls from the thread.
●Continue heating. Check the full-open lift amount.
NOTE:
The full-open lift amount standard temperature for the water
control valve is the reference value.
● After checking the full-open lift amount, lower the water temper-
ature and check the valve closing temperature.
Standard values
INSTALLATION
Install in the reverse order of removal paying attention to the following.
●Install the engine coolant temperature sensor.
Use Genuine Liquid Gasket or equivalent.
Installation of Thermostat and Water Control Valve
●Install the thermostat and water control valve with the whole cir-
cumference of each flange part fit securely inside the rubber
ring. (The example in the figure shows the thermostat.)
●Install the thermostat with the jiggle valve facing upwards. (The
position deviation may be within the range of ±10°)
●Install the water control valve with the up-mark facing up and the
frame center part facing upwards. (The position deviation may
be within the range of ±10°)
Heater Pipe Installation
First apply a neutral detergent to the O-ring, then quickly insert the insertion parts of the heater pipe into the
installation holes.
SLC252B
Thermostat Water control valve
Valve opening temperature 80.5 - 83.5°C (177 - 182° F) 93.5 - 96.5°C (200 - 206°F)
Full-open lift amountMore than 8 mm/ 95°C
(0.315 in/ 203 °F)More than 8 mm/ 108°C
(0.315 in/ 226 ° F)
Valve closing temperature 77°C (171°F) 90°C (194° F)
PBIC0157E
PBIC0158E

CO-22
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
PFP:00030
Standard and LimitEBS00KOP
CAPACITY
Unit: (lmp qt)
THERMOSTAT
WATER CONTROL VALVE
RADIATOR
Unit: kPa (bar, kg/cm2 , psi)
Tightening TorqueEBS00KOQ
Unit: N·m (kg-m, ft-lb)
Unit: N·m (kg-m, in-lb)*
Engine coolant capacity [With reservoir tank (MAX level)] Approximately 7.1 (6-1/4)
Reservoir tank0.6 (1/2)
Valve opening temperature 80.5 - 83.5°C (177 - 182°F)
Valve liftMore than 8 mm/ 95°C (0.315 in/203°F)
Valve closing temperature 77°C (171°F)
Valve opening temperature 93.5 - 96.5°C (200 - 206°F)
Valve liftMore than 8 mm/108°C (0.315 in/226°F)
Valve closing temperature 90°C (194° F)
Cap relief pressureStandard 78 - 98 (0.78 - 0.98, 0.8 - 1.0, 11- 14)
Limit 59 (0.59, 0.6, 9)
Leakage test pressure 157 (1.57, 1.6, 23)
Cylinder block drain plug 7.8 - 11.8 (0.8 - 1.2, 69 - 104)*
Radiator mounting bracket 3.8 - 4.5 (0.39 - 0.46, 34 - 39)*
Radiator fan assembly 3.8 - 4.5 (0.39 - 0.46, 34 - 39)*
Radiator fan2.9 - 3.9 (0.30 - 0.40, 26 - 34)*
Radiator fan motor 3.9 - 4.9 (0.40 - 0.50, 35 - 43)*
Water pump20.8 - 28.2 (2.1 - 2.9, 16 - 20)
Water pump housing 20.8 - 28.2 (2.1 - 2.9, 16 - 20)
Water inlet20.8 - 28.2 (2.1 - 2.9, 16 - 20)
Water outlet20.8 - 28.2 (2.1 - 2.9, 16 - 20)
Water pipe20.8 - 28.2 (2.1 - 2.9, 16 - 20)
Hater pipe20.8 - 28.2 (2.1 - 2.9, 16 - 20)
Engine coolant temperature sensor 19.6 - 29.4 (2.0 - 3.0, 15 - 21)