CO-6
< SYMPTOM DIAGNOSIS >[HR16DE]
OVERHEATING CAUSE ANALYSIS
SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000012432132
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 —Radiator shroud —
Improper engine coolant
mixture ratio —
Engine coolant viscosity —
Poor engine coolant quality —Periodic maintenance —
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 leaking into
cooling system Cylinder head deterioration
Cylinder head gasket deteri-
oration
Revision: August 2015
2016 Versa Note
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CO-8
< PERIODIC MAINTENANCE >[HR16DE]
ENGINE COOLANT
PERIODIC MAINTENANCE
ENGINE COOLANT
InspectionINFOID:0000000012432133
CHECKING COOLING SYSTEM HOSES
Check hoses for the following:
• Improper attachment
• Leaks
• Cracks
• Damage
• Loose connections
• Chafing
• Deterioration
CHECKING RESERVOIR LEVEL
• Check that the reservoir tank engine coolant level is within the
MAX (A) to MIN (B) range when the engine is cool.
• Adjust the engine coolant level if necessary.
CAUTION:
Refill the engine cooling system with the specified coolant or
equivalent. Refer to MA-11, "
Fluids and Lubricants".
CHECKING COOLING SYSTEM FOR LEAKS
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from the radiator. Wrap a th ick cloth around the cap. Slowly push down and
turn it a quarter turn to allow built-up pressure to escape. Carefully remove the cap by pushing it down
and turning it all the way.
CAUTION:
• Perform this step when the engine is cold.
• Do not spill engine coolant on drive belt.
To check for leaks, apply pressure to the cooling system using suit-
able tools (A) and (B).
Draining Engine CoolantINFOID:0000000012432134
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from the radiator. Wrap a th ick cloth around the cap. Slowly push down and
turn it a quarter turn to allow built-up pressure to escape. Carefully remove the cap by pushing it down
and turning it all the way.
1. Remove front under cover. Refer to EXT-39, "
FRONT UNDER COVER : Removal and Installation".
JPBIA0102ZZ
Testing pressure: Refer to
CO-25, "Standard and
Limit".
PBIC5121J
Revision: August 2015 2016 Versa Note
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ENGINE COOLANTCO-9
< PERIODIC MAINTENANCE > [HR16DE]
C
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2. Connect a suitable hose to the radiator drain plug.
• Use a suitable hose with the dimensions as shown.
3. Open radiator drain plug (A) at the bottom of radiator, and then remove radiator cap.
(B): Suitable hose
: Front
CAUTION:
• Perform this step when engine is cold.
• Do not spill engine coolant on the drive belt.
4. It is necessary to drain the cylinder block when drai ning all of engine coolant in the system. To drain the
cylinder block, open the water drain plugs on cylinder block. Refer to EM-93, "
Exploded View".
5. Remove reservoir tank if necessary, and drain engine coolant and clean reservoir tank before installing. Refer to CO-13, "
Exploded View".
6. Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated,
flush the engine cooling system. Refer to CO-11, "
Flushing Cooling System".
RefillingINFOID:0000000012432135
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 completely empty of engine coolant and water.
• Apply sealant to the threads of the cylinder block drain plug. Use Genuine High Performance
Thread Sealant or equivalent. Refer to MA-11, "
Fluids and Lubricants".
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. Diameter (A) : 0.8 mm (0.31 in)
Length (B) : 300 mm (11.81 in)
JPBIA4770ZZ
AWBIA1613ZZ
Radiator drain plug : Refer to CO-13, "Exploded View".
Revision: August 2015
2016 Versa Note
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CO-14
< REMOVAL AND INSTALLATION >[HR16DE]
RADIATOR
1. Drain engine coolant. Refer to
CO-8, "Draining Engine Coolant".
CAUTION:
• Perform this step when the engine is cold.
• Do not spill engine coolant on drive belt.
2. Remove air duct (inlet). Refer to EM-26, "
Removal and Installation".
3. Disconnect battery negative terminal. Refer to PG-70, "
Removal and Installation (Battery)".
4. Remove radiator hose (lower).
5. Remove radiator hose (upper) from water outlet.
6. Remove the front under cover. Refer to EXT-39, "
FRONT UNDER COVER : Removal and Installation".
7. Remove the front grille. Refer to EXT-32, "
Removal and Installation".
8. Disconnect reservoir tank hose, and remove reservoir tank.
9. Disconnect harness connector from fan motor, and move harness aside.
10. Remove radiator core support (upper). Refer to DLK-144, "
RADIATOR CORE SUPPORT UPPER :
Removal and Installation".
11. Remove the condenser bolts and place aside. Refer to HA-31, "
CONDENSER : Removal and Installa-
tion".
12. Remove radiator hose (upper) from radiator.
13. Remove cooling fan assembly. Refer to CO-16, "
Removal and Installation".
CAUTION:
Be careful not to damage or scratch the radiator.
14. Disconnect CVT cooler lines.
15. Remove the radiator from bottom of the vehicle. CAUTION:
When removing, do not damage or scrat ch radiator core or A/C condenser.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Do not reuse O-ring.
• Insert the radiator hose (1) all the way to the stopper (2) or by 33 mm (1.30 in) (hose without a stopper) as
shown.
• The correct orientation of the hose clamps are as shown.
*: Refer to the illustrations for the specific position for each hose clamp tab. 1. Radiator hose
2. Stopper
A. Radiator side B. Engine side
JPBIA4294GB
Radiator hoseHose endPaint mark
Position of hose clamp*
Radiator hose (upper) Radiator side
UpperA
Engine side UpperB
Radiator hose (lower) Radiator side
LowerC
Engine side UpperD
Revision: August 2015 2016 Versa Note
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CO-16
< REMOVAL AND INSTALLATION >[HR16DE]
COOLING FAN
COOLING FAN
Exploded ViewINFOID:0000000012432141
Removal and InstallationINFOID:0000000012432142
REMOVAL
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could
occur from high-pressure
engine coolant escaping from the radi ator. Wrap a thick cloth around the radiator cap. Slowly turn it a
quarter of a turn to release built-up pressure. Carefu lly remove radiator cap by turning it all the way.
NOTE:
When removing components such as hoses, tubes/lines, etc. , cap or plug openings to prevent fluid from spill-
ing.
1. Drain engine coolant. Refer to CO-8, "
Draining Engine Coolant".
CAUTION:
• Perform this step when the engine is cold.
• Do not spill engine coolant on drive belt.
2. Disconnect battery negative terminal. Refer to PG-70, "
Removal and Installation (Battery)".
3. Remove the front grille. Refer to EXT-32, "
Removal and Installation".
4. Remove reservoir tank. Refer to CO-13, "
Exploded View".
5. Disconnect harness connector from fan motor, and move harness aside.
6. Remove radiator core support (upper). Refer to DLK-144, "
RADIATOR CORE SUPPORT UPPER :
Removal and Installation".
7. Remove cooling fan assembly. CAUTION:
Be careful not to damage or scratch the radiator.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Only use Genuine NISSAN parts for the fan shroud bolt.
NOTE:
Cooling fan assembly is controlled by ECM. For details, refer to EC-38, "
COOLING FAN CONTROL : System
Description".
1. Fan shroud2. Fan motor3. Cooling fan
A. Cooling fan nut L. Genuine NISSAN high strength lock-
ing sealant
AWBIA1140GB
Revision: August 2015 2016 Versa Note
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CO-18
< REMOVAL AND INSTALLATION >[HR16DE]
WATER PUMP
WATER PUMP
Exploded ViewINFOID:0000000012432144
Removal and InstallationINFOID:0000000012432145
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could
occur from high-pressure
engine coolant escaping from the radi ator. Wrap a thick cloth around the radiator cap. Slowly turn it a
quarter of a turn to release built-up pressure. Carefu lly remove radiator cap by turning it all the way.
NOTE:
When removing components such as hoses, tubes/lines, etc. , cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-8, "Draining Engine Coolant".
CAUTION:
• Perform this step when the engine is cold.
• Do not spill engine coolant on drive belt.
2. Remove front wheel and tire (RH) using power tool. Refer to WT-48, "
Removal and Installation".
3. Remove front fender protector (RH). Refer to EXT-38, "
Removal and Installation".
4. Loosen water pump pulley bolts before loosening belt tension of drive belt.
5. Remove drive belt. Refer to EM-16, "
Removal and Installation".
6. Remove water pump pulley.
7. Remove water pump. • Loosen water pump bolts in reverse order as shown.
• Engine coolant will leak from cylinder block, so have a recep-
tacle ready below.
CAUTION:
• Do not allow water pump vane to contact any other parts.
• Water pump cannot be disassembled and must be replaced as an assembly.
1. Gasket 2. Water pump3. Water pump pulley
JPBIA4104GB
KBIA3393J
Revision: August 2015 2016 Versa Note
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CO-20
< REMOVAL AND INSTALLATION >[HR16DE]
THERMOSTAT
THERMOSTAT
Exploded ViewINFOID:0000000012432146
Removal and InstallationINFOID:0000000012432147
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could
occur from high-pressure
engine coolant escaping from the radi ator. Wrap a thick cloth around the radiator cap. Slowly turn it a
quarter of a turn to release built-up pressure. Carefu lly remove radiator cap by turning it all the way.
NOTE:
When removing components such as hoses, tubes/lines, etc. , cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-8, "Draining Engine Coolant".
CAUTION:
• Perform this step when engine is cold.
• Do not spill engine coolant on drive belt.
2. Remove air duct. Refer to EM-26, "
Removal and Installation".
3. Disconnect radiator hose (lower) from water inlet. Refer to CO-13, "
Exploded View".
4. Remove water inlet, thermostat, and rubber ring. NOTE:
Engine coolant will leak from cylinder block, so have a receptacle ready below.
INSPECTION AFTER REMOVAL
Thermostat
1. Radiator hose (lower) 2. Water inlet3. Rubber ring
4. Thermostat A. To radiator
PBIC3810E
Revision: August 2015 2016 Versa Note
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CO-24
< REMOVAL AND INSTALLATION >[HR16DE]
WATER OUTLET
Removal and Installation
INFOID:0000000012432149
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from the radi ator. Wrap a thick cloth around the radiator cap. Slowly turn it a
quarter of a turn to release built-up pressure. Carefu lly remove radiator cap by turning it all the way.
NOTE:
When removing components such as hoses, tubes/lines, etc. , cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
1. Drain engine coolant. Refer to CO-8, "Draining Engine Coolant".
CAUTION:
• Perform this step when engine is cold.
• Do not spill engine coolant on drive belt.
2. Remove air ducts and air cleaner assembly. Refer to EM-26, "
Removal and Installation".
3. Disconnect radiator hose (upper). Refer to CO-13, "
Exploded View".
4. Disconnect harness connector from engine coolant temperature sensor.
5. Disconnect harness connector from cylinder block heater (Canada only).
6. Disconnect water hoses and heater hoses from water outlet.
7. Remove water outlet.
8. Remove engine coolant temperature sens or from water outlet, if necessary.
9. Remove cylinder block heater from water outlet, if necessary (Canada only).
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Do not reuse gasket.
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels, including engine coolant and engine oil. If less than required quantity, fill to the specified level. Refer to MA-11, "
Fluids and Lubricants".
• Use procedure below to check for fuel leaks.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leaks
at connection points.
• Start engine. With engine speed increased, che ck again for fuel leaks at connection points.
• Run engine to check for unusual noise and vibration. NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there is no leaks 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 LevelLeaks Level
Engine oil LevelLeaks Level
Transmission/
transaxle fluid CVT Models
LeaksLevel/Leaks Leaks
M/T Models Level/Leaks LeaksLevel/Leaks
Other oils and fluids* LevelLeaks Level
Fuel LeaksLeaksLeaks
Exhaust gas —Leaks —
Revision: August 2015 2016 Versa Note
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