heating NISSAN TIIDA 2007 Service Repair Manual

CO-1
ENGINE
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SECTION CO
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CONTENTS
ENGINE COOLING SYSTEM
HR16DE
FUNCTION DIAGNOSIS ...............................
4
DESCRIPTION ....................................................4
Engine Cooling System .............................................4
Engine Cooling System Schematic ...........................5
SYMPTOM DIAGNOSIS ...............................6
OVERHEATING CAUSE ANALYSIS ..................6
Troubleshooting Chart ...............................................6
PRECAUTION ...............................................8
PRECAUTIONS ...................................................8
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
8
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................
8
Precaution for Liquid Gasket .....................................8
PREPARATION ...........................................10
PREPARATION ..................................................10
Special Service Tool ...............................................10
Commercial Service Tool ........................................10
ON-VEHICLE MAINTENANCE ....................11
ENGINE COOLANT ...........................................11
Inspection ................................................................11
Changing Engine Coolant .......................................11
RADIATOR .........................................................14
Checking Radiator Cap ...........................................14
Checking Radiator ...................................................14
ON-VEHICLE REPAIR .................................16
RADIATOR .........................................................16
Component ..............................................................16
Removal and Installation .........................................16
COOLING FAN ..................................................18
Component (Models with A/C) .................................18
Component (Models without A/C) ............................18
Removal and Installation .........................................19
WATER PUMP ..................................................20
Exploded View .........................................................20
Removal and Installation .........................................20
Inspection ................................................................21
THERMOSTAT ..................................................22
Exploded View .........................................................22
Removal and Installation .........................................22
Inspection ................................................................23
WATER OUTLET ..............................................24
Exploded View .........................................................24
Removal and Installation .........................................24
Inspection ................................................................25
DISASSEMBLY AND ASSEMBLY ..............26
COOLING FAN ..................................................26
DISASSEMBLY AND ASSEMBLY ..........................26
SERVICE DATA AND SPECIFICATIONS
(SDS) ............................................................
27
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
27
Periodical Maintenance Specification ......................27
Radiator ...................................................................27
Thermostat ..............................................................27
MR18DE
FUNCTION DIAGNOSIS ..............................
28
COOLING SYSTEM ..........................................28
Cooling Circuit .........................................................28

CO-2
SYMPTOM DIAGNOSIS .............................30
OVERHEATING CAUSE ANALYSIS ................30
Troubleshooting Chart ............................................30
PRECAUTION .............................................32
PRECAUTIONS .................................................32
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
32
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ..................................
32
Precaution for Liquid Gasket ..................................32
PREPARATION ...........................................34
PREPARATION .................................................34
Special Service Tool ...............................................34
Commercial Service Tool .......................................34
ON-VEHICLE MAINTENANCE ...................35
ENGINE COOLANT ...........................................35
Inspection ...............................................................35
Changing Engine Coolant .......................................35
RADIATOR ........................................................38
Checking Radiator Cap ..........................................38
Checking Radiator ..................................................38
ON-VEHICLE REPAIR ................................40
RADIATOR ........................................................40
Component .............................................................40
Removal and Installation ........................................40
COOLING FAN ..................................................42
Component (Models with A/C) ................................42
Component (Models without A/C) ...........................42
Removal and Installation ........................................43
WATER PUMP ...................................................44
Component .............................................................44
Removal and Installation ........................................44
THERMOSTAT ..................................................45
Component .............................................................45
Removal and Installation ........................................45
WATER OUTLET AND WATER CONTROL
VALVE ...............................................................
47
Component .............................................................47
Removal and Installation ........................................47
DISASSEMBLY AND ASSEMBLY .............50
COOLING FAN ..................................................50
DISASSEMBLY AND ASSEMBLY .........................50
SERVICE DATA AND SPECIFICATIONS
(SDS) ...........................................................
51
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
51
Standard and Limit ..................................................51
K9K
FUNCTION DIAGNOSIS ............................
52
DESCRIPTION ...................................................52
Engine Cooling System .........................................52
SYMPTOM DIAGNOSIS ............................53
OVERHEATING CAUSE ANALYSIS ................53
Troubleshooting Chart ............................................53
PRECAUTION ............................................55
PRECAUTIONS .................................................55
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
55
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ..................................
55
Precaution for Liquid Gasket ...................................55
PREPARATION ..........................................57
PREPARATION .................................................57
Special Service Tools .............................................57
Commercial Service Tools ......................................57
ON-VEHICLE MAINTENANCE ..................58
ENGINE COOLANT ...........................................58
Inspection ................................................................58
Draining ...................................................................58
Refilling ...................................................................58
Flushing ..................................................................59
RADIATOR ........................................................60
Checking Radiator Cap ...........................................60
Checking Radiator ..................................................60
ON-VEHICLE REPAIR ...............................62
RADIATOR ........................................................62
Exploded View ........................................................62
Removal and Installation .........................................62
Inspection ................................................................63
COOLING FAN ..................................................64
Exploded View ........................................................64
Removal and Installation .........................................64
Disassembly and Assembly ....................................65
Inspection ................................................................65
WATER PUMP ...................................................66
Exploded View ........................................................66
Removal and Installation .........................................66
Inspection ................................................................66

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

OVERHEATING CAUSE ANALYSIS
CO-7
< SYMPTOM DIAGNOSIS >[HR16DE]
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Except cool-
ing system
parts mal-
function— Overload on engineAbusive drivingHigh 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
flowBlocked bumper —
— Blocked radiator grilleInstalled car brassiere
Mud contamination or paper
clogging
Blocked radiator —
Blocked condenser
Blocked air flow
Installed large fog lamp Symptom Check items

THERMOSTAT
CO-23
< ON-VEHICLE REPAIR >[HR16DE]
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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: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

CO-30
< SYMPTOM DIAGNOSIS >[MR18DE]
OVERHEATING CAUSE ANALYSIS
SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000001337836
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat stuck closed Thermostat
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—
—
Engine coolant viscosity—
Poor engine coolant quality — —
Insufficient engine coolantEngine coolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Radiator 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

OVERHEATING CAUSE ANALYSIS
CO-31
< SYMPTOM DIAGNOSIS >[MR18DE]
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MA
CO
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P O
Except cool-
ing system
parts mal-
function— Overload on engineAbusive drivingHigh 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
flowBlocked 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

THERMOSTAT
CO-45
< ON-VEHICLE REPAIR >[MR18DE]
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THERMOSTAT
ComponentINFOID:0000000001337850
Removal and InstallationINFOID:0000000001337851
REMOVAL
1. Drain engine coolant. Refer to CO-35, "Changing Engine Coolant".
2. Remove water inlet.
3. Remove thermostat.
4. Remove water pump. Refer to CO-44, "
Removal and Installation".
5. Remove thermostat housing.
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.
 After checking the maximum valve lift amount, lower the water
temperature and check the valve closing temperature.
1. Thermostat housing 2. Water hose 3. Radiator hose (lower)
4. Water inlet 5. Thermostat 6. Rubber ring
7. Gasket A. To oil cooler B. To radiator
Engine front
PBIC4485E
PBIC3314J

CO-48
< ON-VEHICLE REPAIR >[MR18DE]
WATER OUTLET AND WATER CONTROL VALVE
 Place a thread (A) so that it is caught in the valves of water control
valve (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 maximum valve lift amount standard temperature for water
control valve is the reference value.
 After checking the maximum valve lift amount, lower the water
temperature and check the valve closing temperature.
 If out of the specification, replace water control valve.
INSTALLATION
Installation is in the reverse order of removal.
Water Control Valve
CAUTION:
Replace the rubber ring with a new one.
 Install water control valve while making rubber ring (1) groove fit to
water control valve flange (A) around the whole circumference.
 While the mark (A) points to up, install water control valve (2) with
frame center (B) facing straight upward into water outlet (1).
Water Outlet
Install the water control valve to the cylinder head without displacing the valve from the valve position.
Water Hoses
Valve opening temperature 93.5 - 96.5°C (200 - 206°F)
Maximum valve lift 8 mm/ 108°C (0.315 in/ 226°F)
Valve closing temperature 90°C (194°F)
PBIC3314J
PBIC3317J
PBIC4700E

OVERHEATING CAUSE ANALYSIS
CO-53
< SYMPTOM DIAGNOSIS >[K9K]
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SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000001381581
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn timing belt
— Thermostat stuck closed —
Damaged finsDust contamination or pa-
per clogging
Mechanical 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 coolant mixture
ratio———
Poor coolant quality — — —
Insufficient coolantCoolant 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