cooling NISSAN LATIO 2008 Service Repair Manual

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QUICK REFERENCE INDEX
AGENERAL INFORMATIONGIGeneral Information
BENGINEEMEngine Mechanical
LUEngine Lubrication System
COEngine Cooling System
ECEngine Control System
FLFuel System
EXExhaust System
ACCAccelerator Control System
CTRANSMISSION/
TRANSAXLECLClutch System
MTManual Transaxle
ATAutomatic Transaxle
CVTCVT
DDRIVELINE/AXLEFAXFront Axle
RAXRear Axle
ESUSPENSIONFSUFront Suspension
RSURear Suspension
WTRoad Wheels & Tires
FBRAKESBRBrake System
PBParking Brake System
BRCBrake Control System
GSTEERINGPSPower Steering System
STCSteering Control System
HRESTRAINTSSBSeat Belts
SRSSupplemental Restraint System (SRS)
IBODYBLBody, Lock & Security System
GWGlasses, Window System & Mirrors
RFRoof
EIExterior & Interior
IPInstrument Panel
SESeat
JAIR CONDITIONERMTCManual Air Conditioner
KELECTRICALSCStarting & Charging System
LTLighting System
DIDriver Information System
WWWiper, Washer & Horn
BCSBody Control System
LANLAN System
AVAudio Visual, Navigation & Telephone System
ACSAuto Cruise Control System
PGPower Supply, Ground & Circuit Elements
LMAINTENANCEMAMaintenance
Edition: May 2007
Revision: May 2007
Publication No. SM8E-1C11U0
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© 2007 NISSAN NORTH AMERICA, INC.
All rights reserved. No part of this Service Manual may be reproduced or stored in a retrieval system, or transmitted in any
form, or by any means, electronic, mechanical, photo-copying, recording or otherwise, without the prior written permission
of Nissan North America Inc.
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QUICK REFERENCE CHART: VERSA
2008
Fluids and LubricantsINFOID:0000000001903536
DescriptionCapacity (Approximate)
Liter US measure Imp measure
Fuel 52.0 13 3/4 gal 11 1/2 gal
Engine oil
Drain and refill With oil filter change 3.9 4 1/8 qt 3 3/8 qt
Without oil filter change 3.7 3 7/8 qt 3 1/4 qt
Dry engine (engine overhaul) 4.9 5 1/8 qt 4 3/8 qt
Cooling system
(with reservoir at max level) 6.8 7 1/4 qt 6 qt
Manual transaxle fluid (MTF) 2.0 4 1/4 pt 3 1/2 pt
Automatic transaxle fluid (ATF) 7.9 8 3/8 qt 7 qt
CVT fluid 8.3 8 3/4 qt 7 1/4 qt
Brake and clutch fluid — — —
Multi-purpose grease — — —
Windshield washer fluid 4.5 4 3/4 qt 4 qt
Air conditioning system refrigerant 0.45 ± 0.05 kg 0.99 ± 0.11 lb 0.99 ± 0.11 lb
Air conditioning system oil Typ e 1
120 m4.1 fl oz 4.2 fl oz
Typ e 2 100 m3.4 fl oz 3.5 fl oz

PRECAUTIONS
AT-9
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• Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings and
seals, or hold bearings and washers in place during assembly. Do not use grease.
• Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.
• Clean or replace ATF cooler if excessive foreign material is found in oil pan or clogging strainer. Refer to
Refer to .
• After overhaul, refill the A/T with new ATF.
• When the A/T drain plug is removed, only some of the fluid is drained. Old A/T fluid will remain in torque con-
verter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer to
MA-22, "
Changing A/T Fluid", MA-22, "Checking A/T Fluid".
Service Notice or PrecautionINFOID:0000000001703155
ATF COOLER SERVICE
If A/T fluid contains frictional material (clutches, bands, etc.), or if an A/T is repaired, overhauled, or replaced,
inspect and clean the A/T oil cooler mounted in the radiator or replace the radiator. Flush cooler lines using
cleaning solvent and compressed air after repair. Check Service Bulletins for latest A/T oil cooler cleaning pro-
cedure. For radiator replacement, refer to Refer to CO-11
.
TORQUE CONVERTER SERVICE
The torque converter should be replaced under any of the following conditions:
• External leaks in the hub weld area.
• Converter hub is scored or damaged.
• Converter pilot is broken, damaged or fits poorly into crankshaft.
• Steel particles are found after flushing the cooler and cooler lines.
• Pump is damaged or steel particles are found in the converter.
• Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses
have been made. (Converter clutch material may be glazed.)
• Converter is contaminated with engine coolant containing antifreeze.
• Internal malfunction of stator roller clutch.
• Heavy clutch debris due to overheating (blue converter).
• Steel particles or clutch lining material found in fluid filter or on magnet when no internal parts in unit are
worn or damaged — indicates that lining material came from converter.
The torque converter should not be replaced if:
• The fluid has an odor, is discolored, and there is no evidence of metal or clutch facing particles.
• The threads in one or more of the converter bolt holes are damaged.
• A/T malfunction did not display evidence of damaged or worn internal parts, steel particles or clutch plate lin-
ing material in unit and inside the fluid filter.
• Vehicle has been exposed to high mileage (only). The exception may be where the torque converter clutch
dampener plate lining has seen excess wear by vehicles operated in heavy and/or constant traffic, such as
taxi, delivery or police use.
OBD-II SELF-DIAGNOSIS
• A/T self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the OD OFF indicator lamp or the malfunction indicator lamp (MIL). Refer to the table
on AT-78, "
Diagnosis Procedure without CONSULT-III" for the indicator used to display each self-diagnostic
result.
• The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM memo-
ries.
Always perform the procedure “HOW TO ERASE DTC” on AT-36, "
OBD-II Diagnostic Trouble Code
(DTC)" to complete the repair and avoid unnecessary blinking of the MIL.
• The following self-diagnostic items can be detected using ECM self-diagnostic results mode* only when the
OD OFF indicator lamp does not indicate any malfunctions.
-PNP switch
- A/T 1st, 2nd, 3rd, or 4th gear function
*: For details of OBD-II, refer to AT- 3 6
.
•Certain systems and components, especially those related to OBD, may use a new style slide-lock-
ing type harness connector.
For description and how to disconnect, refer to PG-65
.

CO-1
ENGINE
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SECTION CO
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CONTENTS
ENGINE COOLING SYSTEM
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................
2
Precaution for Liquid Gasket .....................................2
PREPARATION ...................................................4
Special Service Tool .................................................4
Commercial Service Tool ..........................................4
OVERHEATING CAUSE ANALYSIS ..................5
Troubleshooting Chart ...............................................5
COOLING SYSTEM ............................................7
Cooling Circuit ...........................................................7
ENGINE COOLANT ............................................8
Inspection ..................................................................8
Changing Engine Coolant .........................................8
RADIATOR .........................................................11
Component ..............................................................11
Removal and Installation .........................................11
Checking Radiator Cap ...........................................13
Checking Radiator ...................................................13
COOLING FAN ..................................................14
Component (Models with A/C) .................................14
Component (Models without A/C) ............................14
Removal and Installation .........................................15
DISASSEMBLY AND ASSEMBLY ..........................15
WATER PUMP ..................................................16
Component ..............................................................16
Removal and Installation .........................................16
THERMOSTAT ..................................................17
Component ..............................................................17
Removal and Installation .........................................17
WATER OUTLET AND WATER CONTROL
VALVE ...............................................................
19
Component ..............................................................19
Removal and Installation .........................................19
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
22
Standard and Limit ..................................................22

OVERHEATING CAUSE ANALYSIS
CO-5
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OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000001702527
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

COOLING SYSTEM
CO-7
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COOLING SYSTEM
Cooling CircuitINFOID:0000000001702528
PBIC4719E

CO-8
< SERVICE INFORMATION >
ENGINE COOLANT
ENGINE COOLANT
InspectionINFOID:0000000001702529
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 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:0000000001702530
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-76
.
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.
Refer to CO-11
.
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Follow the "FLUSHING COOLING SYSTEM" proce-
dure.
REFILLING ENGINE COOLANT
SMA412B
Tool number : EG17650301 (J-33984-A)
Testing pressure
: 157 kPa (1.6 kg/cm
2, 23 psi)
WBIA0568E
PBIC3799E

ENGINE COOLANT
CO-9
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1. Install reservoir tank if removed. Refer to CO-11.
2. Install radiator drain plug.
•If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-76
.
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-11, "
Component".
3. Make sure that each hose clamp has been firmly tightened.
4. Remove air duct assembly. Refer to EM-16
.
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-10
.
• 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-16
.
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. Refer to CO-11.
2. Install radiator drain plug.
•If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-76
.
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-11, "
Component".
PBIC3802E
SMA182B

CO-10
< SERVICE INFORMATION >
ENGINE COOLANT
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-8, "
Changing Engine Coolant".
8. Repeat steps 1 through 7 until clear water begins to drain from radiator.

RADIATOR
CO-11
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RADIATOR
ComponentINFOID:0000000001702531
Removal and InstallationINFOID:0000000001702532
WARNING:
1. Reservoir tank cap 2. Reservoir tank 3. Radiator hose (upper)
4. Mounting rubber (upper) 5. Radiator cap 6. Reservoir tank hose
7. Radiator 8. A/T fluid cooler hose 9. Mounting rubber (lower)
10. O-ring 11. Radiator drain plug 12. A/T fluid cooler hose
13. Radiator hose (lower) 14. Cooling fan assembly 15. CVT fluid cooler hose
16. CVT fluid cooler hose A. To water outlet B. To A/T
C. To water inlet D. M/T models E. CVT models
F. Models with A/C G. To CVT
PBIC4720E