coolant reservoir NISSAN TIIDA 2007 Service Repair Manual

CO-6
< SYMPTOM DIAGNOSIS >[HR16DE]
OVERHEATING CAUSE ANALYSIS
SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000001381552
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat stuck closed —
Damaged finsDust contamination or pa-
per clogging
Physical damage
Clogged radiator cooling
tubeExcess foreign material
(rust, dirt, sand, etc.)
Reduced air flowCooling fan does not oper-
ate
Fan assembly — High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud — — —
Improper engine coolant
mixture ratio———
Poor engine coolant quality — Engine coolant viscosity —
Insufficient engine coolantEngine coolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Reservoir tank capLoose
Poor sealing
RadiatorO-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tankExhaust gas leaks into cool-
ing systemCylinder head deterioration
Cylinder head gasket deteri-
oration

ENGINE COOLANT
CO-11
< ON-VEHICLE MAINTENANCE >[HR16DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
ON-VEHICLE MAINTENANCE
ENGINE COOLANT
InspectionINFOID:0000000001534600
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.
WARNING:
Never remove the radiator cap when 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:0000000001534601
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.
 Be careful not to allow engine coolant to contact drive belt.
DRAINING ENGINE COOLANT
1. Open radiator drain plug (1) at the bottom of radiator, and then
remove radiator cap.
 Front
When drain all of engine coolant in the system, open water
drain plug on cylinder block. Refer to EM-100, "
Exploded
View".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belt.
2. Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to CO-11, "
Changing Engine Coolant".
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed.
SMA412B
Testing pressure
: 157 kPa (1.6 kg/cm2, 23 psi)
WBIA0568E
PBIC3799E

CO-12
< ON-VEHICLE MAINTENANCE >[HR16DE]
ENGINE COOLANT
2. Install radiator drain plug.
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-100, "
Exploded
View".
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-16, "
Component".
3. Make sure that each hose clamp has been firmly tightened.
4. Remove air duct assembly. Refer to EM-27, "
Exploded View".
5. Disconnect heater hose (1) at position ( ) as shown.
 Front
 Reposition heater hose as high as possible.
6. Fill radiator and reservoir tank to specified level.
Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2 1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.
Use NISSAN Genuine Engine Coolant or equivalent mixed
with water (distilled or demineralized). Fill cooling system
to specification. Refer to MA-19, "
Fluids and Lubricants".
 When engine coolant overflows disconnected heater hose,
connect heater hose, and continue filling the engine coolant, if
heater hose is disconnected.
7. Install radiator cap.
8. Install air duct assembly. Refer to EM-27, "
Exploded View".
9. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000
rpm.
 Make sure thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat the engine.
10. Stop engine and cool down to less than approximately 50°C (122°F).
 Cool down using fan to reduce the time.
 If necessary, refill radiator up to filler neck with engine coolant.
11. Refill reservoir tank to “MAX” level line with engine coolant.
12. Repeat steps 6 through 11 two or more times with radiator cap installed until engine coolant level no
longer drops.
13. Check cooling system for leaks with engine running.
14. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between “COOL” and “WARM”.
 Sound may be noticeable at heater unit.
15. Repeat step 14 three times.
16. If sound is heard, bleed air from cooling system by repeating steps 6 through 11 until engine coolant level
no longer drops.
FLUSHING COOLING SYSTEM
1. Install reservoir tank if removed.
2. Install radiator drain plug.
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-100, "
Exploded
View".
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-16, "
Component".
PBIC3802E
SMA182B

ENGINE COOLANT
CO-13
< ON-VEHICLE MAINTENANCE >[HR16DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
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. Refer to CO-11, "
Changing Engine Coolant".
8. Repeat steps 1 through 7 until clear water begins to drain from radiator.

RADIATOR
CO-17
< ON-VEHICLE REPAIR >[HR16DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
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 cloth 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. 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-27, "
Exploded View".
3. 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.
4. Disconnect harness connector from fan motor, and move harness aside.
5. Disconnect A/T fluid cooler hoses if equipped.
 Install plug to avoid leakage of A/T fluid if equipped.
6. Remove radiator hoses (upper and lower).
7. Remove radiator core support cover.
8. 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).
9. 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 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.
 Start and warm up engine. Visually check if there is no leaks of engine coolant and A/T fluid if equipped.
PBIC3800E
PBIC3805E

COOLING FAN
CO-19
< ON-VEHICLE REPAIR >[HR16DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
Removal and InstallationINFOID:0000000001534609
REMOVAL
1. 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-27, "
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 the reverse order of removal.
 Cooling fans are controlled by ECM. For details, refer to CO-4, "
Engine Cooling System".
CAUTION:
Be careful not to damage or scratch the radiator core.

WATER PUMP
CO-21
< ON-VEHICLE REPAIR >[HR16DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
 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:0000000001381570
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 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.
KBIA3393J
PBIC3809E
PBIC3808E

THERMOSTAT
CO-23
< ON-VEHICLE REPAIR >[HR16DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
 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:0000000001381573
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 maximum valve lift amount, lower the water
temperature 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-27, "Thermostat".
PBIC3314J

WATER OUTLET
CO-25
< ON-VEHICLE REPAIR >[HR16DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
InspectionINFOID:0000000001381576
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.

SERVICE DATA AND SPECIFICATIONS (SDS)
CO-27
< SERVICE DATA AND SPECIFICATIONS (SDS) [HR16DE]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Periodical Maintenance SpecificationINFOID:0000000001381577
ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (Imp qt)
RadiatorINFOID:0000000001381578
RESERVOIR TANK CAP
Unit: kPa (bar, kg/cm2, psi)
RADIATOR
Unit: kPa (bar, kg/cm2, psi)
ThermostatINFOID:0000000001381579
Engine coolant capacity [With reservoir tank (“MAX” level)] 6.3 (5-3/8)
Cap relief pressureStandard 140 (1.4, 1.43, 20.3)
Limit 150 (1.5, 1.53, 21.75)
Leakage testing pressure 150 (1.5, 1.53, 21.75)
ThermostatStandard
Valve opening temperature 80.5 - 83.5°C (177 - 182°F)
Maximum valve lift 8.0 mm/95°C (0.315 in/203°F)
Valve closing temperature 77°C (171°F)