2003 NISSAN X-TRAIL coolant level

OIL COOLER
LU-29
[YD22DDTi]
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2. Start engine, and make sure that there is no leaks of engine oil or engine coolant.
3. Stop engine and wait for 10 minutes.
4. Check the engine oil level and the engine coolant level again. Refer to LU-20, "
ENGINE OIL" and CO-31,
"ENGINE COOLANT" .

CO-1
ENGINE COOLING SYSTEM
B ENGINE
CONTENTS
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SECTION
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ENGINE COOLING SYSTEM
QR
PRECAUTIONS .......................................................... 3
Precautions for Liquid Gasket .................................. 3
LIQUID GASKET APPLICATION PROCEDURE ..... 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial Service Tools ........................................ 4
OVERHEATING CAUSE ANALYSIS .......................... 5
Troubleshooting Chart .............................................. 5
COOLING SYSTEM .................................................... 7
Cooling Circuit .......................................................... 7
System Chart ........................................................... 8
ENGINE COOLANT .................................................... 9
Inspection ................................................................. 9
LEVEL CHECK ..................................................... 9
LEAK CHECK ....................................................... 9
Changing Engine Coolant ........................................ 9
DRAINING ENGINE COOLANT ........................... 9
REFILLING ENGINE COOLANT ........................ 10
FLUSHING COOLING SYSTEM ......................... 10
RADIATOR ................................................................ 12
Removal and Installation ........................................ 12
REMOVAL ........................................................... 12
INSTALLATION ................................................... 13
INSPECTION AFTER INSTALLATION ............... 13
Checking Radiator Cap .......................................... 13
Checking Radiator .................................................. 13
RADIATOR (ALUMINUM TYPE) .............................. 14
Disassembly and Assembly ................................... 14
PREPARATION ................................................... 14
DISASSEMBLY ................................................... 14
ASSEMBLY ......................................................... 15
INSPECTION ...................................................... 17
COOLING FAN ......................................................... 18
Removal and Installation ........................................ 18
REMOVAL ........................................................... 18
INSTALLATION ................................................... 18
DISASSEMBLY AND ASSEMBLY ...................... 18WATER PUMP .......................................................... 20
Removal and Installation ........................................ 20
REMOVAL ........................................................... 20
INSPECTION AFTER REMOVAL ....................... 21
INSTALLATION ................................................... 21
INSPECTION AFTER INSTALLATION ................ 21
THERMOSTAT AND WATER CONTROL VALVE .... 22
Removal and Installation ........................................ 22
REMOVAL ........................................................... 22
INSPECTION AFTER REMOVAL ....................... 23
INSTALLATION ................................................... 23
INSPECTION AFTER INSTALLATION ................ 23
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 24
Standard and Limit .................................................. 24
CAPACITY ........................................................... 24
THERMOSTAT .................................................... 24
WATER CONTROL VALVE ................................. 24
RADIATOR .......................................................... 24
Tightening Torque ................................................... 24
YD22DDTi
PRECAUTIONS ........................................................ 25
Precautions For Liquid Gasket ............................... 25
LIQUID GASKET APPLICATION PROCEDURE ... 25
PREPARATION ......................................................... 26
Special Service Tools ............................................. 26
Commercial Service Tools ...................................... 26
OVERHEATING CAUSE ANALYSIS ........................ 27
Troubleshooting Chart ............................................ 27
COOLING SYSTEM .................................................. 29
Cooling Circuit ........................................................ 29
System Chart .......................................................... 30
ENGINE COOLANT .................................................. 31
Inspection ............................................................... 31
LEVEL CHECK .................................................... 31

ENGINE COOLANT
CO-9
[QR]
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ENGINE COOLANTPFP:KQ100
InspectionEBS00KOG
LEVEL CHECK

Check if the reservoir tank engine coolant level is within “MIN” to
“MAX” range when engine is cool.

Adjust engine coolant level as necessary.
LEAK CHECK

To check for leakage, apply pressure to the cooling system with
a radiator cap tester (commercial service tool) and a radiator
cap tester adapter (special service tool).
WARNING:
Do not remove radiator cap when engine is hot. Serious burns
could occur from high-pressure engine coolant escaping from
radiator.
CAUTION:
Higher test pressure than specified may cause radiator damage.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.

If anything is found, repair or replace damaged parts.
Changing Engine CoolantEBS00KOH
WARNING:

To avoid being scalded, do not change engine coolant when engine is hot.

Wrap a thick cloth around radiator cap and carefully remove the cap. First, turn the cap a quarter
of a turn to release built-up pressure. Then turn the cap all the way.

Be careful not to allow engine coolant to contact drive belt.
DRAINING ENGINE COOLANT
1. Remove RH and LH undercovers.
2. Open radiator drain plug at the bottom of radiator, and then
remove radiator cap.
When drain all of engine coolant in the system, open water drain plug on cylinder block. Refer to
EM-82, "
CYLINDER BLOCK" .
3. Remove reservoir tank and drain engine coolant.
SMA412B
Testing pressure:
157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC134B
PBIC2250E

CO-10
[QR]
ENGINE COOLANT

4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated,
flush the engine cooling system. Refer to CO-10, "
FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank, and radiator drain plug.
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring.

If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-82, "CYLINDER
BLOCK" .
2. Fill radiator and reservoir tank to specified level.

Pour engine coolant through engine coolant filler neck
slowly of less than 2 (1-3/4 lmp qt) a minute to allow air
in system to escape.

Use Genuine Nissan Anti-freeze Coolant or equivalent
mixed with water (distilled or demineralized). Refer to
MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS".
3. Warm up engine to normal operating temperature with radiator cap installed.
4. Run engine at 3,000 rpm for 10 seconds and return to idle speed.

Repeat two or three times.
CAUTION:
Watch water 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 2 through 5 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. Repeat step 9 three times.
11. If sound is heard, bleed air from cooling system by repeating steps 2 through 5 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.Engine coolant capacity
(with reservoir tank at “MAX” level)
: Approx. 7.1 (6-1/4 lmp qt)
SMA182B
Reservoir tank capacity (at “MAX” level)
: 0.6 (1/2 lmp qt)
SMA412B

CO-20
[QR]
WATER PUMP

WATE R P U M PPFP:21020
Removal and InstallationEBS00KON
REMOVAL
1. Drain engine coolant. Refer to CO-9, "Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belt.
2. Remove the following parts.

RH undercover

Drive belt; Refer to EM-13, "DRIVE BELTS" .

Drive belt auto-tensioner; Refer to EM-14, "Removal and Installation of Drive Belt Auto-Tensioner" .
3. Remove water pump.

Engine coolant will leak from cylinder block, so have a receptacle ready below.
CAUTION:

Handle water pump vane so that it does not contact any other parts.

Water pump cannot be disassembled and should be replaced as a unit.
4. Remove water pump housing with the following procedure;
a. Remove alternator. Refer to SC-12, "
CHARGING SYSTEM" .
b. Remove oil level gauge and oil level gauge guide. Refer to EM-25, "
OIL PAN AND OIL STRAINER" .
CAUTION:
Plug the oil level gauge guide opening to prevent oil pan from entering foreign materials.
c. Remove mounting bolts for water pipe.
d. Remove water pump housing.
5. Remove exhaust manifold and three way catalyst assembly. Refer to EM-23, "
EXHAUST MANIFOLD
AND THREE WAY CATALYST" .
6. Remove water pipe.
1. Water pump 2. Gasket 3. Gasket
4. Water pump housing 5. Gasket 6. Water pipe
7. O-ring
PBIC2253E

CO-24
[QR]
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 at “MAX” level) Approx. 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 More than 77°C (171°F)
Valve opening temperature 93.5 - 96.5°C (200 - 206°F)
Valve lift More than 8 mm/ 108°C (0.315 in/ 226°F)
Valve closing temperature More than 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)
Radiator mounting bracket 4.2 (0.43, 37)*
Radiator cooling fan assembly 4.2 (0.43, 37)*
Cooling fan3.43 (0.35, 30)*
Fan motor4.41 (0.45, 39)*
Water pump24.5 (2.5, 18)
Water pump housing28.0 (2.9, 21)
Water pipe28.0 (2.9, 21)
Water inlet28.0 (2.9, 21)
Water control valve housing (water outlet) 28.0 (2.9, 21)
Hater pipe28.0 (2.9, 21)
Engine coolant temperature sensor 24.5 (2.5, 18)

ENGINE COOLANT
CO-31
[YD22DDTi]
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ENGINE COOLANTPFP:KQ100
InspectionEBS00BAY
LEVEL CHECK

Check if the reservoir tank engine coolant level within MIN to
MAX when engine is cool.

Adjust engine coolant level as necessary.
CHECKING RADIATOR SYSTEM FOR LEAKS

To check for leaks, apply pressure to the cooling system with the
radiator cap tester (commercial service tool) and the radiator
cap tester adapter (special service tool).
WARNING:
Do not remove radiator cap when engine is hot. Serious
burns could occur from high pressure engine coolant
escaping from radiator.
CAUTION:
Higher test pressure than specified may cause radiator
damage.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.

If anything is found, repair or replace damaged parts.
Changing Engine CoolantEBS00BAZ
WARNING:

To avoid being scalded, do not change engine coolant when engine is hot.

Wrap a thick cloth around cap and carefully remove radiator cap. First, turn radiator cap a quarter
of a turn to release built-up pressure. Then turn the cap all the way.
DRAINING ENGINE COOLANT
1. Remove engine undercover.
2. Open radiator drain plug at the bottom of radiator, and remove
radiator cap.
NOTE:

Be careful not to allow engine coolant to contact drive
belts.

Cover the exhaust tube heat shield to prevent from splashing
engine coolant.
When draining all engine coolant in the system, also perform the following steps.
SMA412B
Testing pressure:
157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC134B
PBIC0236E

CO-32
[YD22DDTi]
ENGINE COOLANT

3. Remove air relief plug.
4. Open cylinder block drain plug. Refer to EM-212, "
CYLINDER BLOCK" .
5. Remove reservoir tank, drain engine coolant, then clean reservoir tank.
6. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush engine cooling system. Refer to CO-33, "
FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank, and radiator drain plug.
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring.

If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-212, "CYLIN-
DER BLOCK" .
2. Fill radiator and reservoir tank to the specified level.

Pour engine coolant through engine coolant filler neck
slowly of less than 2 (1-3/4 lmp qt) a minute to allow air
in system to escape.

Use Genuine Nissan Anti-freeze Coolant or equivalent
mixed with water (distilled or demineralized). Refer to
MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS".

When engine coolant overflows air relief hole, install air relief
plug with new copper washer.
3. Warm up engine to normal operating temperature without radiator 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.
CAUTION:
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.
SBIA0130E
Engine coolant capacity
(with reservoir tank at “MAX” level)
: Approx. 9.5 (8-3/8 lmp qt)
SMA182B
Reservoir tank capacity (at “MAX” level)
: 0.6 (1/2 lmp qt)
Air relief plug:
: 6.9 - 7.8 N·m (0.7 - 0.8 kg-m, 61 - 69 in-lb)
SMA412B