engine overheat 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]
C
D
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F
G
H
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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 —
— Blocked radiator grilleInstalled car brassiere
Mud contamination or paper
clogging
Blocked radiator —
Blocked condenser
Blocked air flow
Installed large fog lamp Symptom Check items

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

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]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
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

CO-36
< ON-VEHICLE MAINTENANCE >[MR18DE]
ENGINE COOLANT
1. Install reservoir tank if removed.
2. Install radiator drain plug.
If water drain plug on cylinder block is removed, install and tighten it. Refer to EM-211, "
Compo-
nent".
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-40, "
Component".
3. Make sure that each hose clamp has been firmly tightened.
4. Remove air duct assembly. Refer to EM-154, "
Component".
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-154, "
Component".
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-211, "
Compo-
nent".
PBIC3802E
SMA182B

CO-54
< SYMPTOM DIAGNOSIS >[K9K]
OVERHEATING CAUSE ANALYSIS
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
Powertrain system malfunc-
tion
— 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
—
Installed large fog lamp Symptom Check items

ENGINE COOLANT
CO-59
< ON-VEHICLE MAINTENANCE >[K9K]
C
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CO
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P O
Put a cloth under the air relief plug to prevent engine coolant from dampening the crankshaft
position sensor.
Pour coolant to the MAX level line of the reservoir tank at
a rate of 2 liter (1-3/4 lamp qt.)/min. or lower.
3. Close the air relief plug.
CAUTION:
If the filling rate is too fast, this could lead to air being
mixed in the coolant. Be sure to fill the coolant slowly
according to the rate indicated above.
Use Insane Genuine Engine Coolant or equivalent mixed
with water (distilled or demineralized). Refer to MA-21,
"Engine Coolant Mixture Ratio".
4. Start engine without closing reservoir tank cap and keep engine racing at 1,500 rpm for about 2-3 minutes.
If necessary, pour engine coolant up to MAX level.
If coolant overflows reservoir tank hole, install filler cap.
Watch engine coolant temperature gauge so as not overheat the engine.
WARNING:
 Be careful not to be scaled with hot engine coolant or vacuum pump when operating.
 Radiator fan blade can start at any time and cause personal injuries.
5. Turn off the engine and loosen air relief plug until coolant spills from air relief hole.
6. Close the air relief plug and run the engine at 2,000 rpm until the upper hose becomes hot and radiator
fan operates. Leave the engine running approximately 5 minutes at idle speed and check for sound of
coolant flow while running engine from idle up to 3,000 rpm.
 Sound may be noticeable at heater water cock.
7. If sound is heard, bleed air from cooling system by repeating steps 4 to 6 until coolant level no longer
drops.
 Check the radiator lower hose for any signs of leakage.
8. Turn off the engine and let it cool down.
 Cool down using a fan to reduce the time.
9. After cooling period, loosen the air relief plug and check if coolant spills from the air relief hole. if not,
remove the air relief plug until the coolant spills, and then close the relief air plug. Bleed air from cooling
system by repeating steps 6 to 10 until the coolant spills immediately.
10. Check the engine coolant level when engine is cool and refill to MAX level line if the level is lower.
 Clean excess coolant from engine.
11. Check that the reservoir tank cap is tightened.
FlushingINFOID:0000000001381588
1. Install reservoir tank if removed.
If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-314, "
Exploded
View".
2. Fill reservoir tank with water until water spills from the air relief hole, then close air relief plug. Reinstall
reservoir tank cap.
3. Run engine and warm it up to normal operating temperature.
4. Rev engine two or three times under no-load.
5. Stop engine and wait until it cools down.
6. Drain water.
7. Repeat steps 1 through 6 until clear water begins to drain from radiator.
8. Blow compressed air into cooling circuit through the reservoir tank valve hole to drain all the water.
JPBIA0306ZZ
Engine coolant capacity
(With reservoir tank at MAX): Refer to MA-19, "Fluids and Lubricants".
Reservoir tank capacity : Refer to MA-19, "
Fluids and Lubricants".