NISSAN TIIDA 2007 Service Repair Manual

CO-60
< ON-VEHICLE MAINTENANCE >[K9K]
RADIATOR
RADIATOR
Checking Radiator CapINFOID:0000000001538671
 Check valve seat of radiator cap.
- Check if valve seat is swollen to the extent that the edge of the
plunger cannot be seen when watching it vertically from the top.
- Check if valve seat has no soil and damage.
 Pull negative-pressure valve to open it, and make sure that it is
completely closed when released.
- Make sure that there is no dirt or damage on the valve seat of radi-
ator cap negative-pressure valve.
- Make sure that the valve operates properly in the opening and
closing conditions.
 Check radiator cap relief pressure using suitable tool.
- When connecting the radiator cap to the tester, apply water or
coolant to the cap seal surface.
- Replace the radiator cap if there is an abnormality in the negative-
pressure valve, or if the open-valve pressure is outside of the stan-
dard values.
 Replace radiator cap if there it does not comply to specifications to the above three checks.
CAUTION:
When installing radiator cap, thoroughly wipe out the radiator filler neck to remove any waxy residue
or foreign material.
Checking RadiatorINFOID:0000000001538672
Check radiator for mud or clogging. If necessary, clean radiator as follows.
 Be careful not to bend or damage radiator fins.
 When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator shroud
and horns. Then tape harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surface once per minute.
3. Stop washing if any stains no longer flow out from radiator.
4. Blow air into the back side of radiator core vertically downward.
 Use compressed air lower than 490 kPa (4.9 bar, 5 kg/cm
2, 71 psi) and keep distance more than 30 cm
(11.8 in).
PBIC2816E
SMA967B
Standard: 78 – 98 kPa (0.78 - 0.98 bar, 0.8 – 1.0 kg/cm2, 11
– 14 psi)
Limit: 59 kPa (0.59 bar, 0.6 kg/cm
2, 9 psi)
WBIA0570E

RADIATOR
CO-61
< ON-VEHICLE MAINTENANCE >[K9K]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.

CO-62
< ON-VEHICLE REPAIR >[K9K]
RADIATOR
ON-VEHICLE REPAIR
RADIATOR
Exploded ViewINFOID:0000000001381591
Removal and InstallationINFOID:0000000001381592
WARNING:
Never remove the reservoir tank cap when the engine is hot. Serious burns could occur from high
pressure coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly turn it a quar-
ter turn to allow built-up pressure to escape. Carefully remove the cap by turning it all the way.
REMOVAL
1. Remove engine undercover using power tool.
2. Drain engine coolant. Refer to CO-58, "
Draining".
CAUTION:
Perform when engine is cold.
3. Remove engine cover.
4. Remove air duct (inlet). Refer to EM-269, "
Exploded View".
5. Remove reservoir tank hoses and reservoir tank.
1. Mounting rubber (upper) 2. Radiator 3. Mounting rubber (lower)
4. Clamp 5. Radiator hose (lower) 6. Cooling fan assembly
7. Cooling fan control module 8. Reservoir tank hose (lower) 9. Reservoir tank
10. Reservoir tank hose (upper) 11. Radiator hose (upper) 12. Clamp
A. To water inlet B. To water outlet
ALBIA0423GB

RADIATOR
CO-63
< ON-VEHICLE REPAIR >[K9K]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
6. Disconnect radiator upper hose, reservoir tank hose and mounting bracket.
7. Disconnect radiator fan motor harness connectors.
8. Remove radiator core support cover.
9. Remove hood latch.
10. Disconnect horn and ambient temperature sensor harness connectors.
11. Remove radiator core support (upper).
12. Remove cooling fan and shroud assembly.
13. Release charge air cooler from the radiator. Refer to EM-270, "
Exploded View".
14. Remove A/C condenser to radiator bolts.
15. Remove radiator.
CAUTION:
 Do not damage or scratch radiator core when removing.
INSTALLATION
 Installation is in the reverse order of removal.
 Check for engine coolant leaks. Refer to CO-58, "
Inspection".
InspectionINFOID:0000000001381593
INSPECTION AFTER INSTALLATION
 Check for engine coolant leaks using rsuitable tools. Refer to CO-58, "Inspection".

CO-64
< ON-VEHICLE REPAIR >[K9K]
COOLING FAN
COOLING FAN
Exploded ViewINFOID:0000000001381594
Removal and InstallationINFOID:0000000001381595
REMOVAL
1. Remove engine undercover using power tool.
2. Drain engine coolant. Refer to CO-58, "
Draining".
3. Remove air duct (inlet). Refer to EM-269, "
Exploded View".
4. Disconnect reservoir tank hoses and remove reservoir tank.
5. Remove radiator hose (upper). Refer to CO-62, "
Exploded View".
6. Disconnect harness connector for cooling fan control module and fan motor, and move harness aside.
7. Remove cooling fan assembly.
CAUTION:
Be careful not to damage or scratch on radiator core.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Only use genuine parts for fan shroud bolt and observe the specified torque (to prevent radiator from
being damaged).
NOTE:
Cooling fan is controlled by ECM. For details, refer to CO-52, "
EngineCoolingSystem".
1. Fan shroud 2. Cooling fan control module 3. Fan motor
4. Cooling fan
A. Reverse screw
: Vehicle front
ALBIA0424GB

COOLING FAN
CO-65
< ON-VEHICLE REPAIR >[K9K]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
Disassembly and AssemblyINFOID:0000000001381596
DISASSEMBLY
1. Remove cooling fan control module from fan shroud.
CAUTION:
Handle carefully to avoid dropping and shocks.
2. Remove cooling fan mounting nut, and then remove the cooling fan.
CAUTION:
Reverse nut is used for the fan attachment. When removing or attaching, turn the nut the opposite
direction from a normal nut.
3. Remove fan motor.
ASSEMBLY
Assembly is in the reverse order of disassembly.
 Apply thread locking sealant on fan motor shaft.
InspectionINFOID:0000000001381597
INSPECTION AFTER DISASSEMBLY
Cooling Fan
Inspect cooling fan for crack or unusual bend.
 If anything is found, replace cooling fan.

CO-66
< ON-VEHICLE REPAIR >[K9K]
WATER PUMP
WATER PUMP
Exploded ViewINFOID:0000000001381598
Removal and InstallationINFOID:0000000001381599
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator.
REMOVAL
1. Remove the following parts.
 Battery ground cable
 Engine undercover
 RH front wheel
2. Remove fender protector RH. Refer to EXT-22, "
Removal and Installation".
3. Drain engine coolant. Refer to CO-58, "
Draining".
CAUTION:
Perform when engine is cold.
4. Remove drive belt. Refer to EM-263, "
Removal and Installation".
5. Remove timing belt and inner cover. Refer to EM-291, "
Removal and Installation".
6. Remove the water pump.
 Coolant will leak from the cylinder block, so have a receptacle ready below.
CAUTION:
 Handle the water pump vane so that it does not contact any other parts.
 Water pump cannot be disassembled and should be replaced as a unit.
INSTALLATION
Installation is in the reverse order of removal.
InspectionINFOID:0000000001381600
INSPECTION AFTER REMOVAL
1. Water pump 2. Gasket 3. Cylinder block
E1BIA0026GB

WATER PUMP
CO-67
< ON-VEHICLE REPAIR >[K9K]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
 Visually make sure there is no significant dirt or rusting on the
water pump body and vane.
 Make sure there is no looseness in the vane shaft, and that it turns
smoothly when rotated by hand.
 If there are any defects, replace the water pump assembly.
INSPECTION AFTER INSTALLATION
 Check for engine coolant leaks using suitable tools. Refer to CO-58, "Inspection".
MBIB0546E

CO-68
< ON-VEHICLE REPAIR >[K9K]
WATER OUTLET AND THERMOSTAT ASSEMBLY
WATER OUTLET AND THERMOSTAT ASSEMBLY
Exploded ViewINFOID:0000000001381601
Removal and InstallationINFOID:0000000001381602
REMOVAL
1. Remove battery.
2. Remove engine undercover using power tool.
3. Drain engine coolant. Refer to CO-58, "
Draining".
CAUTION:
Perform when engine is cold.
4. Remove engine cover.
5. Remove air cleaner and air duct assembly. Refer to EM-269, "
Removal and Installation".
6. Remove rear engine slinger. Refer to EM-314, "
Exploded View".
7. Remove vacuum hose.
8. Remove vacuum pump. Refer to EM-280, "
Removal and Installation".
9. Remove radiator upper hose. Refer to CO-62, "
Exploded View".
10. Remove heater hose.
11. Disconnect reservoir tank hose.
12. Remove water outlet.
INSTALLATION
Installation is in the reverse order of removal.
InspectionINFOID:0000000001381603
INSPECTION AFTER REMOVAL
1. O-ring 2. EGR cooler cover 3. Clamp
4. Water pipe 5. Heater hose 6. Clamp
7. Engine coolant temperature sensor 8. O-ring 9. Lock plate
10. Clamp 11. Gasket 12. Water outlet and thermostat assembly
13. Air relief plug
A. To EGR volume control valve housing B. To radiator hose (upper) C. To heater core
E1BIA0027GB

WATER OUTLET AND THERMOSTAT ASSEMBLY
CO-69
< ON-VEHICLE REPAIR >[K9K]
C
D
E
F
G
H
I
J
K
L
MA
CO
N
P O
 Place a thread so that it is caught in the valves of the thermostat.
Immerse fully in a container filled with water. Heat while stirring.
(The example shows the thermostat.)
 The valve opening temperature is the temperature at which the
valve opens and falls from the thread.
 Continue heating. Check the full-open lift amount.
 After checking the full-open lift amount, lower the water tempera-
ture and check the valve closing temperature.
 If the measured value is out of the standard value or unusual valve
seating condition is found, replace water inlet and thermostat
assembly.
INSPECTION AFTER INSTALLATION
 Check for engine coolant leaks using suitable tools. Refer to CO-58, "Inspection".
E1BIA0038ZZ
Temperature °C (°F)
Start of opening 89 (192)
End of opening 97 - 101 (207 - 214)