2005 NISSAN NAVARA coolant reservoir

CO-12
RADIATOR
3. Remove engine cover. Refer toEM-20, "INTAKE MANIFOLD".
4. Remove air inlet hoses between engine to charge air cooler. Refer toEM-18, "
CHARGE AIR COOLER".
5. Disconnect radiator hose (upper and lower) and reservoir tank hose.
CAUTION:
Be careful not to allow engine coolant to contact drive belts.
6. Remove reservoir tank.
7. Remove cooling fans (crankshaft driven type and motor driven type) and radiator shrouds (upper and
lower). Refer toCO-19, "
COOLING FAN".
8. Disconnect A/T fluid cooler hoses. (A/T models)
lInstall blind plug to avoid leakage of A/T fluid.
9. Remove radiator mounting brackets.
10. Remove the two A/C condenser bolts. (models with A/C)
11. Remove radiator.
Remove radiator as follows (models with A/C):
CAUTION:
Do not damage or scratch A/C condenser and radiator core when removing.
a. With lifting and pulling radiator (3) in a rear direction, remove
radiator lower mount (4) from radiator core support (1).
CAUTION:
Because A/C condenser (2) is onto the front-lower portion
of radiator (3), moving to rear direction should be at mini-
mum.
b. Lift A/C condenser up and remove radiator.
CAUTION:
Lifting A/C condenser should be minimum to prevent a load
to A/C piping.
c. After removing radiator, temporarily secure it with rope or similar
means to prevent a load to A/C piping.
LBIA0421E
: Vehicle front
PBIC3350E
PBIC1054E

RADIATOR
CO-13
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INSPECTION AFTER REMOVAL
Checking Reservoir Tank Cap
lInspect valve seat of reservoir tank cap.
–Check if valve seat is swollen to the extent that the edge of the
plunger cannot be seen when watching it vertically from the top.
–Check if valve seat has no soil and damage.
lPull negative-pressure valve to open it, and make sure that it is
completely closed when released.
–Make sure that there is no dirt or damage on the valve seat of
radiator cap negative-pressure valve.
–Make sure that there are no unusualness in the opening and
closing conditions of negative-pressure valve.
lCheck reservoir tank cap relief pressure.
–When connecting reservoir tank cap to the radiator cap tester
adapter [SST] and the radiator cap tester (Commercial service
tool), apply engine coolant to the cap seal surface.
lReplace reservoir tank cap if there is an unusualness in negative pressure valve, or if the relief pressure
falls below the limit.
CAUTION:
When installing a radiator cap and reservoir tank cap, thoroughly wipe out the radiator and reservoir
tank filler neck to remove any waxy residue or foreign material.
Checking Radiator
Check radiator for mud or clogging. If necessary, clean radiator as follows.
lBe careful not to bend or damage the radiator fins.
lWhen radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator
shroud and horns. Then tape the harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downwards.
2. Apply water again to all radiator core surface once per minute.
3. Stop washing if any stains no longer flow out from the radiator.
4. Blow air into the back side of radiator core vertically downwards.
lUse compressed air lower than 490 kPa (4.9 bar, 5 kg/cm2, 71 psi) and keep distance more than 30 cm
(11.8 in).
5. Blow air again into all the radiator core surface once per minute until no water sprays out.
PBIC2816E
SMA967B
Standard : 98.2 - 117.8 kPa (0.98 - 1.18 bar, 1.0 -
1.2 kg/cm
2,14-17psi)
Limit : 59 kPa (0.59 bar, 0.6 kg/cm
2,9psi)
SLC755AC

WATER PUMP
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WAT E R P U MPPFP:21020
ComponentsEBS01F6K
lRefer toGI-10, "Components"for symbol marks in the figure.
Removal and InstallationEBS01E6W
WARNING:
Do not remove radiator cap and/or reservoir tank cap when the engine is hot. Serious burns could
occur from high pressure engine coolant escaping from the radiator and/or the reservoir tank.
CAUTION:
lWhen removing water pump assembly, be careful not to get engine coolant on drive belts.
lWater pump cannot be disassembled and should be replaced as a unit.
lAfter installing water pump, connect hose and clamp securely, then check for leaks using radiator
cap tester (commercial service tool) and radiator cap tester adapter [SST: EG17650301].
REMOVAL
1. Remove front engine undercover. Refer toEI-15, "FRONT BUMPER".
2. Drain engine coolant. Refer toCO-8, "
DRAINING ENGINE COOLANT".
CAUTION:
lPerform this step when engine is cold.
lDo not spill engine coolant on drive belts.
3. Remove engine cover. Refer toEM-20, "
INTAKE MANIFOLD".
4. Remove drive belts. Refer toEM-12, "
DRIVE BELTS".
5. Remove water pump pulley. Refer toCO-19, "
Removal and Installation".
lLoosen the pulley bolts after fixing the pulley using a screwdriver etc.
6. Remove water pump.
1. Gasket 2. Water pump 3. Water pump pulley
4. Fan coupling
PBIC4057E

CO-24
THERMOSTAT AND WATER PIPING
Removal and Installation
EBS01E6X
WARNING:
Do not remove radiator cap and/or reservoir tank cap when engine is hot. Serious burns could occur
from high pressure engine coolant escaping from radiator and/or reservoir tank.
REMOVAL
1. Remove front engine undercover and middle engine undercover. Refer toEI-15, "FRONT BUMPER".
2. Drain engine coolant from radiator drain plug at the bottom of radiator, and from water drain plug at the
side of cylinder block. Refer toCO-7, "
Changing Engine Coolant"andEM-110, "CYLINDER BLOCK".
CAUTION:
Perform this step when engine is cold.
3. Remove engine cover. Refer toEM-20, "
INTAKE MANIFOLD".
4. Disconnect radiator hoses (upper and lower) from engine side. Refer toCO-11, "
RADIATOR".
5. Remove air inlet pipe and air duct between air cleaner case and turbocharger. Refer toEM-15, "
AIR
CLEANER AND AIR DUCT"andEM-28, "TURBO CHARGER".
6. Remove water outlet, water inlet and thermostat.
7. Remove thermostat housing.
8. Disconnect heater return hose and water hoses at heater return pipe side, and remove heater return pipe.
9. Remove oil level gauge guide mounting bolt, vacuum hoses (to turbocharger boost control solenoid valve)
and spill hose. Refer toEM-36, "
OIL PAN AND OIL STRAINER",EM-20, "INTAKE MANIFOLD"andEM-
44, "INJECTION TUBE AND FUEL INJECTOR".
10. Disconnect water hoses (to EGR cooler) (A/T models), vacuum hoses and heater feed hose at heater
feed pipe side, and remove heater feed pipe. Refer toEM-20, "
INTAKE MANIFOLD".
INSPECTION AFTER REMOVAL
Thermostat
lPlace a string so that it is caught in the valves of the thermostat.
Immerse fully in a container filled with water. Heat while stirring.
lThe valve opening temperature is the temperature at which the
valve opens and falls from the thread.
lContinue heating. Check the full-open lift amount.
lAfter checking the full-open lift amount, lower the water temper-
ature and check the valve closing temperature.
Standard values
lIf out of the standard, replace thermostat.
INSTALLATION
Note the following, and install in the reverse order of removal.
lSecurely insert each hose, and install clamp at a position where it does not interfere with the pipe bulge.
lWhen inserting heater feed pipe end into cylinder head, apply a neutral detergent to O-ring. Then insert it
immediately.
SLC252B
Item Thermostat
Valve opening temperature 80.5 - 83.5°C (177 - 182°F)
Full-open lift amount More than 9 mm/ 95°C (0.35 in/ 203°F)
Valve closing temperature More than 77°C(171°F)

CO-26
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
PFP:00030
Standard and LimitEBS01E6Y
ENGINE COOLANT CAPACITY
Unit: (lmp qt)
THERMOSTAT
RESERVOIR TANK
Unit:kPa(bar,kg/cm2, psi)
Engine coolant capacity
(With reservoir tank at “MAX” level)LHD models Approx. 9.9 (8-3/4)
RHD models Approx. 10.2 (9)
Reservoir tank (at “MAX” level)0.8 (3/4)
Valve opening temperature 80.5 - 83.5°C (177 - 182°F)
Full open lift amount More than 9 mm/ 95°C (0.35 in/203°F)
Valve closing temperature More than 77°C(171°F)
Cap relief pressureStandard 98.2 - 117.8 (0.98 - 1.18, 1.0 - 1.2, 14 - 17)
Limit 59 (0.59, 0.6, 9)
Leakage test pressure 157 (1.57, 1.6, 23)

EC-52
TROUBLE DIAGNOSIS
ECM Harness Connector Terminal Layout
EBS01KCZ
ECM Terminals And Reference ValueEBS01KD0
PREPARATION
1. ECM located in the engine room passenger side behind coolant
reservoir tank.
2. Remove ECM harness connector.
3. When disconnecting ECM harness connector, loosen it with
levers as far as they will go as shown in the figure.
4. Connect a break-out box (SST) and Y-cable adapter (SST)
between the ECM and ECM harness connector.
lUse extreme care not to touch 2 pins at one time.
lData is for comparison and may not be exact.
ECM INSPECTION TABLE
Remarks: Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
MBIB0045E
BBIA0537E
PBIB1512E
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
1
2
3B
B
BECM ground[Engine is running]
lIdle speedApproximately 0V

DTC P0217 ENGINE OVER TEMPERATURE
EC-133
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CONSULT-II Reference Value in Data Monitor ModeEBS01KFL
Specification data are reference values.
On Board Diagnosis LogicEBS01KFM
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
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. Refer toCO-7, "
Changing Engine
Coolant". Also, replace the engine oil. Refer toLU-6, "Changing 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-16, "
Engine Coolant Mixture Ratio".
2. After refilling coolant, run engine to ensure that no water-flow noise is emitted.
Overall Function CheckEBS01KFN
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WARNING:
lNever remove a radiator cap and/or a reservoir tank cap when the engine is hot. Serious burns
could be caused by high pressure fluid escaping from the radiator and the reservoir tank.
lWrap a thick cloth around 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.
MONITOR ITEM CONDITION SPECIFICATION
COOLING FAN
lEngine: After warming up, idle
the engine
lAir conditioner switch: OFFEngine coolant temperature: 97°C
(207°F) or lessOFF
Engine coolant temperature: Between
98°C (208°F) and 104°C(219°F)LOW
Engine coolant temperature: 105°C
(221°F) or moreHI
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0217
0217Engine over temperature
(Overheat)
lCooling fan does not operate properly (Over-
heat).
lCooling fan system does not operate properly
(Overheat).
lEngine coolant was not added to the system
using the proper filling method.
lEngine coolant is not within the specified
range.
lHarness or connectors
(The cooling fan circuit is open or
shorted.)
lIPDM E/R
lCooling fan
lCooling fan (Crankshaft driven)
lRadiator hose
lRadiator
lRadiator cap
lReservoir tank
lReservoir tank cap
lWater pump
lThermostat
For more information, refer toEC-140,
"Main 12 Causes of Overheating".

EC-134
DTC P0217 ENGINE OVER TEMPERATURE
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-137,
"Diagnostic Procedure".
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go toEC-137,
"Diagnostic Procedure".
3. Turn ignition switch ON.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
5. If the results are NG, go toEC-137, "
Diagnostic Procedure".
WITHOUT 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-137,
"Diagnostic Procedure".
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go toEC-137,
"Diagnostic Procedure".
3. Perform IPDM E/R auto active test and check cooling fan motors operation, refer toPG-19, "
Auto Active
Te s t".
4. If NG, go toEC-137, "
Diagnostic Procedure".
SEF621W
SEF111X
SEF621W