check engine NISSAN LATIO 2011 Service Repair Manual

OVERHEATING CAUSE ANALYSISCO-7
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SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000005930774
Symptom
Check items
Cooling sys-
tem parts
malfunction Poor heat transfer
Water pump malfunction Worn or loose drive belt
—
Thermostat stuck closed
—
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 —Radiator shroud —
Improper engine coolant
mixture ratio —
Engine coolant viscosity —
Poor engine coolant quality — —
Insufficient engine coolant Engine coolant leaks Cooling hose
Loose clamp
Cracked hose
Water pump Poor sealing
Reservoir tank cap Loose
Poor sealing
Radiator O-ring for damage, 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 systemCylinder head deterioration
Cylinder head gasket deteri-
oration
Revision: May 2010
2011 Versa

CO-8
< SYMPTOM DIAGNOSIS >[HR16DE]
OVERHEATING CAUSE ANALYSIS
Except cool-
ing system
parts mal-
function—
Overload on engine Abusive driving
High engine rpm under no
load
Driving in low gear for ex-
tended time
Driving at extremely high
speed
Power train system mal-
function
—
Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flow Blocked bumper
Installed front bumper fas-
cia cover
—
Blocked radiator grille Mud contamination or paper
clogging
Blocked radiator Blocked air flow
Blocked condenser
Installed large fog lamp
Symptom
Check items
Revision: May 2010 2011 Versa

ENGINE COOLANTCO-11
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ON-VEHICLE MAINTENANCE
ENGINE COOLANT
InspectionINFOID:0000000005930777
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.
CHECKING COOLING SYSTEM FOR LEAKS
To check for leaks, apply pressure to the cooling system using suit-
able tool and Tool.
WARNING:
Never remove the radiator cap wh en the engine is hot. Serious
burns could occur from high pressure coolant escaping from
the radiator.
CAUTION:
Higher pressure than specified may cause radiator damage.
Changing Engine CoolantINFOID:0000000005930778
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.
CAUTION:
• Do not spill engine coolant on drive belt.
DRAINING ENGINE COOLANT
1. Open radiator drain plug (1) at the bottom of radiator, and then remove radiator cap.
• Front
When draining all of engine coolant in the system, open
water drain plug on cylinder block. Refer to EM-90
.
CAUTION:
• Perform this step when engine is cold.
• Do not spill engine coolant on drive belt.
2. Remove reservoir tank as necessary, and drain engi ne coolant and clean reservoir tank before installing.
Refer to CO-16, "
Component".
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
SMA412B
Tool number : EG17650301 (J-33984-A)
Testing pressure : 157 kPa (1.6 kg/cm
2, 23 psi)
WBIA0568E
PBIC3799E
Revision: May 2010 2011 Versa

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

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

WATER PUMPCO-21
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• Tighten bolts in numerical order as shown.
Water pump pulley.
CAUTION:
Never install mounting bolts (A) to oblong holes (B).
• Water pump pulley (1)
InspectionINFOID:0000000005930789
INSPECTION AFTER REMOVAL
• Visually check if 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.
INSPECTION AFTER INSTALLATION
• Check that the reservoir tank cap is tightened.
• Check for leaks of engine coolant. Refer to CO-11, "
Inspection".
• Start and warm up the engine. Visually check for leaks of engine coolant.
KBIA3393J
PBIC3809E
PBIC3808E
Revision: May 2010 2011 Versa

THERMOSTATCO-23
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• Install thermostat (2) into the cylinder block (1) with jiggle valve (A)
facing upwards.
Water Inlet.
After installation, fix water inlet clip (A) on the oil level gauge guide
(1) positioned (B) as shown.
InspectionINFOID:0000000005930792
INSPECTION AFTER REMOVAL
WARNING:
Use a protector to prevent a burn during the work.
Thermostat
• 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.
• After checking the full-open valve lift amount, lower the water tem- perature and check the valve closing temperature.
• If out of the standard, replace thermostat.
INSPECTION AFTER INSTALLATION
• Check that the reservoir tank cap is tightened.
• Check for leaks of engine coolant using suitable tools. Refer to CO-11, "
Inspection".
• Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.
PBIC3812E
PBIC3755E
Standard : Refer to CO-26, "Thermostat".
PBIC3314J
Revision: May 2010 2011 Versa

WATER OUTLETCO-25
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10. Remove engine coolant temperature sensor from water outlet, if necessary.
CAUTION:
• Handle carefully to avoid any shock to engine coolant temperature sensor.
• Replace the gasket with a new one.
11. Remove block heater from water outlet, if necessary (Canada only).
INSTALLATION
Installation is in the reverse order of removal.
NOTE:
Insert the block heater into the water outlet until the clip is fully locked (Canada only).
InspectionINFOID:0000000005930795
INSPECTION AFTER INSTALLATION
• Check that the reservoir tank cap is tightened.
• Check for leaks of engine coolant using suitable tool. Refer to CO-11, "
Inspection".
• Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.
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