NISSAN LATIO 2011 Service Repair Manual

RADIATORCO-41
< SERVICE INFORMATION > [MR18DE]
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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-36, "
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-135
.
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 CVT or A/T fluid cooler hoses if equipped. • Install plug to avoid leakage of CVT or A/T fluid if equipped.
7. Remove radiator hoses (upper and lower).
8. Remove radiator core support cover. Refer to BL-19
.
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 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 eq uipped and radiator core when installing.
InspectionINFOID:0000000006413348
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels incl uding engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-14, "
Fluids and Lubricants".
• Use procedure below to check for fuel leakage.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-
age at connection points.
• Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.
PBIC3800E
PBIC3805E
Revision: May 2010 2011 Versa

CO-42
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RADIATOR
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-
ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc. Item
Before starting engine Engine runningAfter engine stopped
Engine coolant LevelLeakage Level
Engine oil LevelLeakage Level
Transmission/
transaxle fluid A/T and CVT Models
LeakageLevel/Leakage Leakage
M/T Models Level/Leakage LeakageLevel/Leakage
Other oils and fluids* LevelLeakage Level
Fuel LeakageLeakage Leakage
Exhaust gas —Leakage —
Revision: May 2010 2011 Versa

COOLING FANCO-43
< SERVICE INFORMATION > [MR18DE]
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COOLING FAN
Component (Models with A/C)INFOID:0000000005930812
Component (Models without A/C)INFOID:0000000005930813
1. Fan motor cover
2. Fan motor3. Cooling fan control module
4. Washer 5. Fan shroud6. 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

CO-44
< SERVICE INFORMATION >[MR18DE]
COOLING FAN
Removal and Installation
INFOID:0000000005930814
REMOVAL
1. Partially drain engine coolant from radiator. Refer to CO-36, "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-135, "
Component".
3. Remove reservoir tank. Refer to CO-40, "
Component".
4. Disconnect radiator hose (upper) at radiator side. Refer to CO-40, "
Component".
5. Disconnect harness connectors from fan motor, and move harness 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-895, "
On Board Diagnosis Logic".
CAUTION:
Be careful not to damage or scratch the radiator core.
Disassembly and AssemblyINFOID:0000000005930815
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

WATER PUMPCO-45
< SERVICE INFORMATION > [MR18DE]
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WATER PUMP
ComponentINFOID:0000000005930816
Removal and InstallationINFOID:0000000005930817
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
1. Disconnect battery negative terminal. Refer to SC-7, "Removal and Installation".
2. Remove reservoir tank. Refer to CO-40, "
Component".
3. Drain engine coolant from radiator. Refer to CO-36, "
Changing Engine Coolant".
CAUTION:
Perform this step when the engine is cold.
4. Remove front fender protector (RH). Refer to EI-26, "
Removal and Installation".
5. Remove drive belt. Refer to EM-132, "
Removal and Installation".
6. Remove generator. Refer to SC-25, "
Removal and Installation".
7. Remove radiator hose (lower). Refer to CO-40, "
Component".
8. Remove water pump. 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.
INSPECTION AFTER REMOVAL
• Visually check that there is no significant dirt or rusting on water
pump body and vane (A).
• Make sure that there is no looseness in vane shaft, and that it turns smoothly when rotated by hand.
• Replace water pump, if necessary.
1. Gasket 2. Water pump
PBIC3921E
PBIC3313J
Revision: May 2010 2011 Versa

CO-46
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WATER PUMP
INSTALLATION
Installation is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
• Check that the reservoir tank cap is tightened.
• Check for leaks of engine coolant. Refer to
CO-36, "
Inspection".
• Start and warm up the engine. Visually check for leaks of engine coolant.
Revision: May 2010 2011 Versa

THERMOSTATCO-47
< SERVICE INFORMATION > [MR18DE]
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THERMOSTAT
ComponentINFOID:0000000005930818
Removal and InstallationINFOID:0000000005930819
REMOVAL
1. Drain engine coolant from radiator. Refer to
CO-36, "Changing Engine Coolant".
CAUTION:
• Perform this step when engine is cold.
• Never spill engine coolant on drive belt.
2. Remove the air duct (inlet). Refer to EM-135, "
Component".
3. Remove the radiator hose (lower) from the engine. Refer to CO-40, "
Component".
4. Remove water inlet.
5. Remove thermostat.
6. Remove water pump, if necessary. Refer to CO-45
.
7. Remove thermostat housing, if necessary.
INSPECTION AFTER REMOVAL
• Place a thread (A) so that it is caught in the valves of thermostat (1). Immerse fully in a container (B) filled with water. Heat while
stirring.
• The valve opening temperature is the temperature at which the
valve opens and falls from the thread.
• Continue heating. Check the full-open valve lift amount. NOTE:
The full-open valve lift amount standard temperature for the ther-
mostat is the reference value.
• After checking the full-open valve lift amount, lower the water tem-
perature and check the valve closing temperature.
• If out of the specification, replace thermostat.
1. Gasket 2. Thermostat housing3. Clamp
4. Water hose 5. Rubber ring6. Thermostat
7. Water inlet 8. Clamp9. Radiator hose (lower)
A. CVT models B. To CVT fluid warmer C. To radiator
JPBIA2884GB
Standard : Refer to CO-55, "Standard and Limit"
PBIC3314J
Revision: May 2010 2011 Versa

CO-48
< SERVICE INFORMATION >[MR18DE]
THERMOSTAT
INSTALLATION
Installation is in the reverse order of removal.
• Use the following procedure to install the thermostat.
- Install thermostat making sure rubber ring (1) groove fits securely
to thermostat flange (A).
CAUTION:
Replace the rubber ring with a new one.
- Install thermostat (1) into the thermostat housing (2) with jiggle valve (A) facing upwards.
• Use the following procedure to install the thermostat housing.
- Securely insert the rubber ring into the mating groove of thermostat housing and install it. CAUTION:
Replace the rubber ring with a new one.
- Install the thermostat housing to the cylinder block without displacing the gasket from the gasket position.
InspectionINFOID:0000000006413349
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels incl uding engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-14, "
Fluids and Lubricants".
• Use procedure below to check for fuel leakage.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-
age at connection points.
• Start engine. With engine speed increased, che ck again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec- ified level, if necessary.
• Summary of the inspection items:
PBIC3315J
PBIC3548J
Item Before starting engine Engine runningAfter engine stopped
Engine coolant LevelLeakage Level
Engine oil LevelLeakage Level
Transmission/
transaxle fluid A/T and CVT Models
LeakageLevel/Leakage Leakage
M/T Models Level/Leakage LeakageLevel/Leakage
Other oils and fluids* LevelLeakage Level
Revision: May 2010 2011 Versa

THERMOSTATCO-49
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*Power steering fluid, brake fluid, etc.
Fuel
LeakageLeakageLeakage
Exhaust gas —Leakage —
Revision: May 2010 2011 Versa

CO-50
< SERVICE INFORMATION >[MR18DE]
WATER OUTLET AND WATER CONTROL VALVE
WATER OUTLET AND WATER CONTROL VALVE
ComponentINFOID:0000000005930820
A/T MODELS
PBIC4699E
1. Engine coolant temperature sensor 2. Rubber ring
3. Water control valve
4. Gasket 5. Water hose 6. Gasket
7. Water hose 8. Water outlet 9. Heater hose
10. Heater hose 11. Radiator hose (upper) Front
A. To heater B. To electric throttle control actuator C. To radiator
Revision: May 2010 2011 Versa