2003 NISSAN TEANA coolant level

CO-1
ENGINE COOLING SYSTEM
B ENGINE
CONTENTS
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SECTION CO
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ENGINE COOLING SYSTEM
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PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for Liquid Gasket .................................. 3
REMOVAL OF LIQUID GASKET SEALING .......... 3
LIQUID GASKET APPLICATION PROCEDURE ..... 3
PREPARATION ........................................................... 5
Special Service Tools ............................................... 5
Commercial Service Tools ........................................ 5
OVERHEATING CAUSE ANALYSIS .......................... 6
Troubleshooting Chart .............................................. 6
COOLING SYSTEM .................................................... 8
Cooling Circuit .......................................................... 8
System Chart ........................................................... 9
ENGINE COOLANT .................................................. 10
Inspection ............................................................... 10
LEVEL CHECK ................................................... 10
LEAK CHECK ..................................................... 10
Changing Engine Coolant ...................................... 10
DRAINING ENGINE COOLANT ......................... 10
REFILLING ENGINE COOLANT ......................... 11
FLUSHING COOLING SYSTEM ......................... 12
RADIATOR ................................................................ 13
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 14
INSPECTION AFTER INSTALLATION ............... 14
Checking Radiator Cap .......................................... 14
Checking Radiator .................................................. 15
RADIATOR (ALUMINUM TYPE) .............................. 16
Disassembly and Assembly ................................... 16
PREPARATION ................................................... 16
DISASSEMBLY ................................................... 16
ASSEMBLY ......................................................... 17
INSPECTION ...................................................... 19
COOLING FAN ......................................................... 20
Removal and Installation ........................................ 20
REMOVAL ........................................................... 20INSTALLATION ................................................... 20
INSPECTION AFTER INSTALLATION ................ 20
Disassembly and Assembly .................................... 21
DISASSEMBLY ................................................... 21
INSPECTION AFTER DISASSEMBLY ................ 21
ASSEMBLY ......................................................... 21
WATER PUMP .......................................................... 22
Removal and Installation ........................................ 22
REMOVAL ........................................................... 22
INSPECTION AFTER REMOVAL ....................... 23
INSTALLATION ................................................... 23
INSPECTION AFTER INSTALLATION ................ 23
THERMOSTAT AND WATER CONTROL VALVE .... 24
Removal and Installation ........................................ 24
REMOVAL ........................................................... 24
INSPECTION AFTER REMOVAL ....................... 25
INSTALLATION ................................................... 25
INSPECTION AFTER INSTALLATION ................ 25
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 26
Standard and Limit .................................................. 26
ENGINE COOLANT CAPACITY (APPROXI-
MATE) .................................................................. 26
THERMOSTAT .................................................... 26
WATER CONTROL VALVE ................................. 26
RADIATOR .......................................................... 26
VQ
PRECAUTIONS ........................................................ 27
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................. 27
Precautions for Liquid Gasket ................................ 27
REMOVAL OF LIQUID GASKET SEALING ........ 27
LIQUID GASKET APPLICATION PROCEDURE ... 27
PREPARATION ......................................................... 29
Special Service Tools ............................................. 29
Commercial Service Tools ...................................... 29
OVERHEATING CAUSE ANALYSIS ........................ 30
Troubleshooting Chart ............................................ 30

CO-2 COOLING SYSTEM .................................................. 32
Cooling Circuit ........................................................ 32
System Chart .......................................................... 33
ENGINE COOLANT .................................................. 34
Inspection ............................................................... 34
LEVEL CHECK .................................................... 34
LEAK CHECK ...................................................... 34
Changing Engine Coolant ....................................... 34
DRAINING ENGINE COOLANT .......................... 34
REFILLING ENGINE COOLANT ......................... 35
FLUSHING COOLING SYSTEM ......................... 36
RADIATOR ................................................................ 37
Removal and Installation ........................................ 37
REMOVAL ........................................................... 37
INSTALLATION .................................................... 38
INSPECTION AFTER INSTALLATION ................ 38
Checking Radiator Cap .......................................... 38
Checking Radiator .................................................. 39
RADIATOR (ALUMINUM TYPE) ............................... 40
Disassembly and Assembly .................................... 40
PREPARATION ................................................... 40
DISASSEMBLY ................................................... 40
ASSEMBLY ......................................................... 41
INSPECTION ....................................................... 43
COOLING FAN .......................................................... 44
Removal and Installation ........................................ 44
REMOVAL ........................................................... 44INSTALLATION .................................................... 44
Disassembly and Assembly .................................... 45
DISASSEMBLY .................................................... 45
INSPECTION AFTER DISASSEMBLY ................ 45
ASSEMBLY .......................................................... 45
WATER PUMP ........................................................... 46
Removal and Installation ......................................... 46
REMOVAL ............................................................ 46
INSPECTION AFTER REMOVAL ........................ 47
INSTALLATION .................................................... 48
INSPECTION AFTER INSTALLATION ................ 49
WATER INLET AND THERMOSTAT ASSEMBLY .... 50
Removal and Installation ......................................... 50
REMOVAL ............................................................ 50
INSPECTION AFTER REMOVAL ........................ 51
INSTALLATION .................................................... 51
INSPECTION AFTER INSTALLATION ................ 51
WATER OUTLET AND WATER PIPING ................... 52
Removal and Installation ......................................... 52
REMOVAL ............................................................ 52
INSTALLATION .................................................... 53
INSPECTION AFTER INSTALLATION ................ 53
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 54
Standard and Limit .................................................. 54
ENGINE COOLANT CAPACITY (APPROXI-
MATE) .................................................................. 54
RADIATOR ........................................................... 54
THERMOSTAT ..................................................

CO-10
[QR]
ENGINE COOLANT

ENGINE COOLANTPFP:KQ100
InspectionBBS005A2
LEVEL CHECK

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

Adjust the engine coolant level as necessary.
LEAK CHECK

To check for leaks, apply pressure to the cooling system with
radiator cap tester (commercial service tool) and radiator cap
tester adapter (SST).
WARNING:
Do not remove radiator cap when engine is hot. Serious
burns could occur from high-pressure engine coolant
escaping from radiator.
CAUTION:
Higher testing 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 CoolantBBS005A3
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 grommet from undercover.
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 engine cylinder block.
Refer to EM-81, "
CYLINDER BLOCK" .
3. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
SMA412B
Testing pressure
: 157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC756AA
PBIC2512E

ENGINE COOLANT
CO-11
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4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to CO-12, "
FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-81, "
CYLINDER
BLOCK" .
2. Make sure that each hose clamp has been firmly tightened.
3. Remove air duct assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
4. Disconnect heater hose (left side of vehicle) at the position in
the figure.

Enhance heater hose as high as possible.
5. Fill radiator and reservoir tank to specified level.
CAUTION:
Never adhere the engine coolant to electronic equipments
(alternator etc.).

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 NISSAN Genuine Engine Coolant or equivalent
mixed with water (distilled or demineralized). Refer to
MA-14, "
RECOMMENDED FLUIDS AND LUBRICANTS".

When engine coolant overflows disconnected heater hose, connect heater hose, and continue filling the
engine coolant.
6. Install air duct assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
7. Install radiator cap.Radiator drain plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
1 : Heater hose
: Vehicle front
PBIC4679E
Engine coolant capacity
(With reservoir tank at “MAX” level)
: Approx. 7.4 (6-1/2 lmp qt)SMA182B
Reservoir tank engine coolant capacity
(At “MAX” level)
: 0.8 (3/4 lmp qt)
SMA412B

CO-12
[QR]
ENGINE COOLANT

8. Warm up until opening thermostat and water control valve. Standard for warming-up time is approximately
10 minutes at 3,000 rpm.

Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
9. Stop engine and cool down to less than approximately 50°C (122°F).

Cool down using fan to reduce the time.

If necessary, refill radiator up to filler neck with engine coolant.
CAUTION:
Never adhere the engine coolant to electronic equipments (alternator etc.).
10. Refill reservoir tank to “MAX” level line with engine coolant.
11. Repeat steps 3 through 9 two or more times with radiator cap installed until engine coolant level no longer
drops.
12. Check cooling system for leaks with engine running.
13. 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.
14. Repeat step 13 three times.
15. If sound is heard, bleed air from cooling system by repeating steps 3 through 9 until engine coolant level
no longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-81, "
CYLINDER
BLOCK" .
2. Remove air duct assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
3. Disconnect heater hose (left side of vehicle) at the position in
the figure.

Enhance heater hose as high as possible.
4. Fill radiator and reservoir tank with water and reinstall radiator cap.

When engine coolant overflows disconnected heater hose, connect heater hose, and continue filling the
engine coolant.
5. Install air duct assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
6. Run engine and warm it up to normal operating temperature.
7. Rev engine two or three times under no-load.
8. Stop engine and wait until it cools down.
9. Drain water from the system. Refer to CO-10, "
DRAINING ENGINE COOLANT" .
10. Repeat steps 1 through 9 until clear water begins to drain from radiator.Radiator drain plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
1 : Heater hose
: Vehicle front
PBIC4679E

CO-22
[QR]
WATER PUMP

WATE R P U M PPFP:21020
Removal and InstallationBBS005AA
REMOVAL
1. Drain engine coolant from radiator drain plug at the bottom of radiator and from water drain plug on engine
cylinder block. Refer to CO-10, "
Changing Engine Coolant" and EM-81, "CYLINDER BLOCK" .
CAUTION:

Perform this step when engine is cold.

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

Undercover and splash guard (RH)

Drive belt; Refer to EM-14, "DRIVE BELTS" .

Drive belt auto-tensioner; Refer to EM-15, "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-27, "
CHARGING SYSTEM" .
b. Remove oil level gauge and oil level gauge guide. Refer to EM-26, "
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.
PBIC2253E
1. Water pump 2. Gasket 3. Gasket
4. Water pump housing 5. Gasket 6. Water pipe
7. O-ring

CO-26
[QR]
SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitBBS005AC
ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (lmp qt)
THERMOSTAT
WATER CONTROL VALVE
*: Reference data
RADIATOR
Unit: kPa (bar, kg/cm2 , psi)
Engine coolant capacity (With reservoir tank at “MAX” level) 7.4 (6-1/2)
Reservoir tank engine coolant capacity (At “MAX” level) 0.8 (3/4)
Valve opening temperature 80.5 - 83.5°C (177 - 182°F)
Maximum valve lift 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)
Maximum valve lift 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)

CO-34
[VQ]
ENGINE COOLANT

ENGINE COOLANTPFP:KQ100
InspectionBBS004WY
LEVEL CHECK

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

Adjust the engine coolant level as necessary.
LEAK CHECK

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

If anything is found, repair or replace damaged parts.
Changing Engine CoolantBBS004WZ
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 belts.
DRAINING ENGINE COOLANT
1. Remove grommet from undercover.
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 plugs on cylinder block. Refer to
EM-229, "
DISASSEMBLY" .
3. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
SMA412B
Testing pressure
: 157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC756AA
PBIC2512E