cooling NISSAN LATIO 2011 Service User Guide

CO-12
< ON-VEHICLE MAINTENANCE >[HR16DE]
ENGINE COOLANT
If contaminated, flush the engine cooling system.
REFILLING ENGINE COOLANT
1. Install the radiator drain plug. Install the reservoir
tank and cylinder block drain plug, if removed for a total
system drain or for engine removal or repair.
• The radiator must be complete ly empty of coolant and water.
• Apply sealant to the threads of the cylinder bl ock drain plugs. Use Genuine High Performance
Thread Sealant or equivalent. Refer to GI-42, "
Recommended Chemical Product and Sealant".
2. If disconnected, reattach the upper radiator hose at the engine side.
3. Set the vehicle heater controls to the full HOT and heat er ON position. Turn the vehicle ignition ON with
the engine OFF as necessary to activate the heater mode.
4. Install the Tool by installing the radiator cap adapter onto the radiator neck opening. Then attach the gauge body assembly
with the refill tube and the venturi assembly to the radiator cap
adapter.
5. Insert the refill hose into the coolant mixture container that is placed at floor level. Make sure the ball valve is in the closed
position.
•Use Genuine NISSAN Long Life Anti-freeze coolant or
equivalent, mixed with distil led water or demineralized
water.
Refer to MA-15, "
Anti-freeze Coolant Mixture Ratio".
6. Install an air hose to the venturi assembly, the air pressure must be within specification.
CAUTION:
The compressed air supply must be equipped with an air dryer.
7. The vacuum gauge will begin to rise and there will be an audible hissing noise. During this process open the ball valve on the refill hose slightly. Coolant will be vi sible rising in the refill hose. Once the refill hose is
full of coolant, close the ball valve. This will purge any air trapped in the refill hose.
8. Continue to draw the vacuum until the gauge reaches 28 inches of vacuum. The gauge may not reach 28 inches in high altitude
locations, use the vacuum specifications based on the altitude
above sea level.
9. When the vacuum gauge has reached the specifi ed amount, disconnect the air hose and wait 20 seconds
to see if the system loses any vacuum. If the vacuum level drops, perform any necessary repairs to the
system and repeat steps 6 - 8 to bring the vacuum to the specified amount. Recheck for any leaks.
Radiator drain plug : Refer to
CO-16, "
Component".
Cylinder block drain plug : 9.8 N·m (1.0 kg-m, 87 in-lb)
Tool number : KV991J0070 (J-45695)
Engine coolant capacity
(with reservoir tank) : Refer to
MA-14, "
Fluids
and Lubricants".
Compressed air
supply pressure : 549 - 824 kPa (5.6 - 8.4 kg/cm
2,
80 - 119 psi)
LLIA0058E
Altitude above sea level Vacuum gauge reading
0 - 100 m (328 ft) : 28 inches of vacuum
300 m (984 ft) : 27 inches of vacuum
500 m (1,641 ft) : 26 inches of vacuum
1,000 m (3,281 ft) : 24 - 25 inches of vacuum
LLIA0057E
Revision: May 2010 2011 Versa

ENGINE COOLANTCO-13
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10. Place the coolant container (with the refill hose inserted)
at the same level as the top of the radiator. Then
open the ball valve on the refill hose so the coolant will be drawn up to fill the cooling system. The cooling
system is full when the vacuum gauge reads zero.
CAUTION:
Do not allow the coolant container to get too low when filling, to avoid air from being drawn into
the cooling system.
11. Remove the Tool from the radiator neck opening.
12. Fill the cooling system reservoir tank to the specif ied level and install the radiator cap. Run the engine to
warm up the cooling system and top up the system as necessary.
FLUSHING COOLING SYSTEM
1. Install reservoir tank if removed. Refer to CO-16, "Component".
2. Install radiator drain plug. •If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-90, "
Disassem-
bly and Assembly".
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-16, "
Component".
3. Fill radiator and reservoir tank with water and reinstall radiator cap.
4. Run engine and warm it up to normal operating temperature.
5. Rev engine two or three times under no-load.
6. Stop engine and wait until it cools down.
7. Drain water from the cooling system.
8. Repeat steps 1 through 7 until clear water begins to drain from radiator.
Revision: May 2010 2011 Versa

CO-14
< ON-VEHICLE MAINTENANCE >[HR16DE]
RADIATOR
RADIATOR
Checking Radiator CapINFOID:0000000005930779
• Check valve seat of radiator 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.
• Pull 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 radi-
ator cap negative-pressure valve.
- Make sure that the valve operates properly in the opening and closing conditions.
• Check radiator cap relief pressure using suitable tool and Tool.
- When connecting the radiator cap to the tester, apply water or coolant to the cap seal surface.
- Replace the radiator cap if ther e is an abnormality in the negative-
pressure valve, or if the open-valve pr essure is outside of the standard values.
• Replace radiator cap if there it does not comply to specifications to the above three checks.
CAUTION:
When installing radiator cap, thoroughly wipe out the radiator filler neck to remove any waxy residue
or foreign material.
Checking RadiatorINFOID:0000000005930780
Check radiator for mud or clogging. If necessary, clean radiator as follows.
• Be careful not to bend or damage radiator fins.
• When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator shroud and horns. Then tape harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surface once per minute.
3. Stop washing if any stains no longer flow out from radiator.
4. Blow air into the back side of radiator core vertically downward.
PBIC2816E
SMA967B
Tool number : EG17650301 (J-33984-A)
Standard: 78 – 98 kPa (0.78 - 0.98 bar, 0.8 – 1.0 kg/cm
2, 11
– 14 psi)
Limit: 59 kPa (0.59 bar, 0.6 kg/cm
2, 9 psi)
WBIA0570E
Revision: May 2010 2011 Versa

CO-16
< ON-VEHICLE REPAIR >[HR16DE]
RADIATOR
ON-VEHICLE REPAIR
RADIATOR
ComponentINFOID:0000000005930781
Removal and InstallationINFOID:0000000005930782
WARNING:
1. Reservoir tank cap
2. Reservoir tank 3. Radiator hose (upper)
4. Mounting rubber (upper) 5. Radiator cap6. Reservoir tank hose
7. Radiator 8. A/T fluid cooler hose9. Mounting rubber (lower)
10. O-ring 11. Radiator drain plug12. A/T fluid cooler hose
13. Radiator hose (lower) 14. Cooling fan assembly
A. To water outlet B. To A/TC. To water inlet
D. M/T models E. Models with A/C
AWBIA0128GB
Revision: May 2010 2011 Versa

RADIATORCO-17
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Do not remove radiator cap when the engine is
hot. Serious burns could occur from high-pressure
engine coolant escaping from radiator. Wrap a thick cl oth around the cap. Slowly turn it a quarter of a
turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.
REMOVAL
1. Remove engine under cover. Refer to EI-15, "Removal and Installation".
2. Drain engine coolant from radiator. Refer to CO-11, "
Changing Engine Coolant".
CAUTION:
• Perform this step when engine is cold.
• Do not spill engine coolant on drive belt.
3. Remove air duct (inlet). Refer to EM-25, "
Exploded View".
4. Remove reservoir tank as follows:
a. Disconnect reservoir tank hose.
b. Release the tab (A) in the direction shown by the arrow ( ).
c. Lift up while removing the reservoir tank hose, and remove it.
5. Disconnect harness connector from fan motor, and move harness aside.
6. Disconnect A/T fluid cooler hoses if equipped. • Install plug to avoid leakage of A/T fluid if equipped.
7. Remove radiator hoses (upper and lower).
8. Remove radiator core support cover.
9. Remove cooling fan assembly.
10. Remove radiator core support (upper) bolts, bolts of stationary part on the radiator core support side and clip. Lift radiator
assembly (1) from radiator (upper) mount part of radiator core
support (upper) (2).
11. Move radiator assembly (1) to the rearward direction of vehicle, and then lift it upward to remove.
CAUTION:
Do not damage or scratch A/C condenser if equipped and
radiator core when removing.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Do not damage or scratch A/C condenser if equipped and radiator core when removing.
INSPECTION AFTER INSTALLATION
• Check for leaks of engine coolant. Refer to CO-11, "Inspection".
• Start and warm up engine. Visually check if there is no leaks of engine coolant and A/T fluid if equipped.
Refer to CO-11, "
Inspection" and AT-17, "Checking A/T Fluid".
PBIC3800E
PBIC3805E
Revision: May 2010 2011 Versa

CO-18
< ON-VEHICLE REPAIR >[HR16DE]
COOLING FAN
COOLING FAN
Component (Models with A/C)INFOID:0000000005930783
Component (Models without A/C)INFOID:0000000005930784
1. Fan motor cover
2. Fan motor3. Cooling fan control module
4. Washer 5. Fan shroud 6. Washer
7. Cooling fan A. Apply on fan motor shaft Front
PBIC4538E
1. Fan motor 2. Fan shroud3. Cooling fan
A. Apply on fan motor shaft Front
WBIA0786E
Revision: May 2010 2011 Versa

COOLING FANCO-19
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Removal and InstallationINFOID:0000000005930785
REMOVAL
1. Partially drain engine coolant from radiator. Refer to
CO-11, "Changing Engine Coolant".
CAUTION:
• Perform this step when engine is cold.
• Do not spill engine coolant on drive belt.
2. Remove air duct (inlet). Refer to EM-25, "
Exploded View".
3. Remove reservoir tank.
4. Disconnect radiator hose (upper) at radiator side. Refer to CO-16, "
Component".
5. Disconnect harness connectors from fan motor, and move harness to aside.
6. Remove cooling fan assembly. CAUTION:
Be careful not to damage or scratch the radiator core.
INSTALLATION
Installation is in the reverse order of removal.
• Cooling fans are controlled by ECM. For details, refer to EC-425, "
Description".
CAUTION:
Be careful not to damage or scratch the radiator core.
Disassembly and AssemblyINFOID:0000000005930786
DISASSEMBLY
1. Remove cooling fan from fan motor.
2. Remove fan motor from fan shroud.
INSPECTION AFTER DISASSEMBLY
Inspect cooling fan for crack or unusual bend.
• If anything is found, replace cooling fan.
ASSEMBLY
Assembly is in the reverse order of disassembly.
Revision: May 2010 2011 Versa

CO-30
< SERVICE INFORMATION >[MR18DE]
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000005930802
The actual shapes of Kent-Moore tools may from
those of special service tools illustrated here.
Commercial Service ToolINFOID:0000000005930803
Tool number
(Kent-Moore No.)
Tool name Description
WS39930000
(—)
Tube pressure Pressing the tube of liquid gasket
KV991J0070
(J-45695)
Coolant Refill Tool Refilling engine cooling system
EG17650301
(J-33984-A)
Radiator cap tester adapter Adapting radiator cap tester to radiator cap
and radiator filler neck
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
K V 1 0 1111 0 0
(J-37228)
Seal cutter Removing chain tensioner cover and water
pump cover
—
(J-23688)
Engine coolant refractometer Checking concentration of ethylene glycol in
engine coolant
S-NT052
LMA053
S-NT564
NT046
WBIA0539E
Revision: May 2010
2011 Versa

CO-32
< SERVICE INFORMATION >[MR18DE]
OVERHEATING CAUSE ANALYSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000005930804
Symptom
Check items
Cooling sys-
tem parts
malfunction Poor heat transfer
Water pump malfunction Worn or loose drive belt
—
Thermostat stuck closed Thermostat
Damaged fins
Dust contamination or pa-
per clogging
Physical damage
Clogged radiator cooling
tube Excess foreign material
(rust, dirt, sand, etc.)
Reduced air flow Cooling fan does not oper-
ate
Fan assembly —
High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud — —
Improper engine coolant
mixture ratio —
Engine coolant viscosity —
Poor engine coolant quality — —
Insufficient engine coolant Engine coolant leaksCooling hose
Loose clamp
Cracked hose
Water pump Poor sealing
Radiator cap Loose
Poor sealing
Radiator O-ring for da
mage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tank Exhaust gas leaks into cool-
ing system Cylinder head deterioration
Cylinder head gasket deteri-
oration
Revision: May 2010
2011 Versa

CO-34
< SERVICE INFORMATION >[MR18DE]
COOLING SYSTEM
COOLING SYSTEM
Cooling CircuitINFOID:0000000005930805
A/T MODELS
PBIC4719E
Revision: May 2010
2011 Versa