air conditioning NISSAN LATIO 2008 Service Repair Manual

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

EC-1
ENGINE
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CONTENTS
ENGINE CONTROL SYSTEM
SERVICE INFORMATION ............................9
INDEX FOR DTC .................................................9
DTC No. Index ..........................................................9
Alphabetical Index ...................................................12
PRECAUTIONS ..................................................16
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
16
Precaution for Procedure without Cowl Top Cover ....16
On Board Diagnosis (OBD) System of Engine and
A/T, CVT .................................................................
16
Precaution ...............................................................17
PREPARATION ..................................................20
Special Service Tool ...............................................20
Commercial Service Tool ........................................21
ENGINE CONTROL SYSTEM ............................22
Schematic ...............................................................22
Multiport Fuel Injection (MFI) System .....................22
Electronic Ignition (EI) System ................................25
Fuel Cut Control (at No Load and High Engine
Speed) .....................................................................
25
AIR CONDITIONING CUT CONTROL ...............27
Input/Output Signal Chart ........................................27
System Description .................................................27
AUTOMATIC SPEED CONTROL DEVICE
(ASCD) ...............................................................
28
System Description .................................................28
Component Description ...........................................29
CAN COMMUNICATION ....................................30
System Description .................................................30
EVAPORATIVE EMISSION SYSTEM ................31
Description ..............................................................31
Component Inspection ............................................33
Removal and Installation .........................................35
How to Detect Fuel Vapor Leakage .........................35
ON BOARD REFUELING VAPOR RECOV-
ERY (ORVR) ......................................................
38
System Description ..................................................38
Diagnosis Procedure ...............................................38
Component Inspection .............................................40
POSITIVE CRANKCASE VENTILATION .........43
Description ...............................................................43
Component Inspection .............................................43
NVIS (NISSAN VEHICLE IMMOBILIZER SYS-
TEM-NATS) .......................................................
45
Description ...............................................................45
ON BOARD DIAGNOSTIC (OBD) SYSTEM ....46
Introduction ..............................................................46
Two Trip Detection Logic .........................................46
Emission-related Diagnostic Information .................47
Malfunction Indicator Lamp (MIL) ............................60
OBD System Operation Chart .................................63
BASIC SERVICE PROCEDURE .......................69
Basic Inspection ......................................................69
Idle Speed and Ignition Timing Check .....................73
Procedure After Replacing ECM .............................75
VIN Registration ......................................................75
Accelerator Pedal Released Position Learning .......76
Throttle Valve Closed Position Learning .................76
Idle Air Volume Learning .........................................76
Fuel Pressure Check ...............................................78
TROUBLE DIAGNOSIS ....................................81
Trouble Diagnosis Introduction ................................81
DTC Inspection Priority Chart ..................................86
Fail-Safe Chart ........................................................87
Symptom Matrix Chart .............................................88
Engine Control Component Parts Location .............93
Vacuum Hose Drawing ............................................99
Circuit Diagram ......................................................100
ECM Harness Connector Terminal Layout ............102

AIR CONDITIONING CUT CONTROL
EC-27
< SERVICE INFORMATION >
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Input/Output Signal ChartINFOID:0000000001702558
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
System DescriptionINFOID:0000000001702559
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
• When the accelerator pedal is fully depressed.
• When cranking the engine.
• At high engine speeds.
• When the engine coolant temperature becomes excessively high.
• When operating power steering during low engine speed or low vehicle speed.
• When engine speed is excessively low.
• When refrigerant pressure is excessively low or high.
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch
Air conditioner ON signal*
1
Air conditioner
cut controlAir conditioner relay Accelerator pedal position sensor Accelerator pedal position
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
2
Engine coolant temperature sensor Engine coolant temperature
Battery
Battery voltage*
2
Refrigerant pressure sensor Refrigerant pressure
EPS control unit
Power steering operation*
1
Wheel sensor
Vehicle speed*1

GI-1
GENERAL INFORMATION
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CONTENTS
GENERAL INFORMATION
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Description ................................................................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
General Precaution ...................................................3
Precaution for Three Way Catalyst ...........................4
Precaution for Fuel (Unleaded Regular Gasoline
Recommended) .........................................................
4
Precaution for Multiport Fuel Injection System or
Engine Control System .............................................
5
Precaution for Hoses .................................................5
Precaution for Engine Oils ........................................6
Precaution for Air Conditioning .................................6
HOW TO USE THIS MANUAL ............................7
Description ................................................................7
Terms ........................................................................7
Units ..........................................................................7
Contents ....................................................................7
Relation between Illustrations and Descriptions .......8
Component ................................................................8
How to Follow Trouble Diagnosis ..............................9
How to Read Wiring Diagram ..................................13
Abbreviations ..........................................................20
SERVICE INFORMATION FOR ELECTRICAL
INCIDENT ...........................................................
22
How to Check Terminal ...........................................22
How to Perform Efficient Diagnosis for an Electri-
cal Incident ..............................................................
25
Control Units and Electrical Parts ............................32
CONSULT-III CHECKING SYSTEM .................35
Description ...............................................................35
Function and System Application ............................35
CONSULT-III Data Link Connector (DLC) Circuit ....36
LIFTING POINT .................................................38
Special Service Tool ................................................38
Garage Jack and Safety Stand and 2-Pole Lift .......38
Board-On Lift ...........................................................39
TOW TRUCK TOWING .....................................40
Tow Truck Towing ...................................................40
Vehicle Recovery (Freeing a Stuck Vehicle) ...........40
TIGHTENING TORQUE OF STANDARD
BOLTS ...............................................................
41
Tightening Torque Table .........................................41
RECOMMENDED CHEMICAL PRODUCTS
AND SEALANTS ...............................................
42
Recommended Chemical Product and Sealant .......42
IDENTIFICATION INFORMATION ....................43
Model Variation ........................................................43
Dimensions ..............................................................46
Wheels & Tires ........................................................46
TERMINOLOGY ................................................47
SAE J1930 Terminology List ...................................47

GI-6
< SERVICE INFORMATION >
PRECAUTIONS
• After installing plate clamps, apply force to them in the direction of
the arrow, tightening rubber hose equally all around.
Precaution for Engine OilsINFOID:0000000001702429
Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin contact
with used oil.
If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible.
HEALTH PROTECTION PRECAUTIONS
• Avoid prolonged and repeated contact with oils, particularly used engine oils.
• Wear protective clothing, including impervious gloves where practicable.
• Do not put oily rags in pockets.
• Avoid contaminating clothes, particularly underpants, with oil.
• Heavily soiled clothing and oil-impregnated footwear should not be worn. Overalls must be cleaned regu-
larly.
• First aid treatment should be obtained immediately for open cuts and wounds.
• Use barrier creams, applying them before each work period, to help the removal of oil from the skin.
• Wash with soap and water to ensure all oil is removed (skin cleansers and nail brushes will help). Prepara-
tions containing lanolin replace the natural skin oils which have been removed.
• Do not use gasoline, kerosene, diesel fuel, gas oil, thinners or solvents for cleaning skin.
• If skin disorders develop, obtain medical advice without delay.
• Where practical, degrease components prior to handling.
• Where there is a risk of eye contact, eye protection should be worn, for example, chemical goggles or face
shields; in addition an eye wash facility should be provided.
Precaution for Air ConditioningINFOID:0000000001702430
Use an approved refrigerant recovery unit any time the air conditioning system must be discharged. Refer to
MTC-74, "
HFC-134a (R-134a) Service Procedure" for specific instructions.
SMA022D

MA-4
< SERVICE INFORMATION >
GENERAL MAINTENANCE
GENERAL MAINTENANCE
Explanation of General MaintenanceINFOID:0000000001704720
General MaintenanceINFOID:0000000001704721
General maintenance includes those items which should be checked during the normal day-to-day operation
of the vehicle. They are essential if the vehicle is to continue operating properly. The owners can perform
checks and inspections themselves or they can have their NISSAN dealers do them.
OUTSIDE THE VEHICLE
The maintenance items listed here should be performed from time to time, unless otherwise specified.
INSIDE THE VEHICLE
The maintenance items listed here should be checked on a regular basis, such as when performing periodic maintenance, cleaning the vehicle,
etc.
ItemReference page
TiresCheck the pressure including the spare, at least once a month and always prior
to a long distance trip. Adjust to the specified pressure if necessary. Check care-
fully for damage, cuts or excessive wear.WT-25, "
Tire"
Wheel nutsWhen checking the tires, make sure no nuts are missing, and check for any loose
nuts. Tighten if necessary.WT-6, "Rotation"
WindshieldClean the windshield on a regular basis. Check the windshield at least every six
months for cracks or other damage. Repair as necessary.—
Tire rotationTires should be rotated every 12,000 km (7,500 miles).WT-6, "
Rotation"
Transmitter compo-
nents in tire pressure
monitoring systemReplace grommet seal, valve core and cap of the transmitter in TPMS every tire
replacement by reaching wear limit of tire.WT-7
Wheel alignment and
balanceIf the vehicle pulls to either side while driving on a straight and level road, or if
you detect uneven or abnormal tire wear, there may be a need for wheel align-
ment. If the steering wheel or seat vibrates at normal highway speeds, wheel bal-
ancing may be needed.FSU-6, "Wheel Align-
ment Inspection" and
WT-6, "
Balancing
Wheels"
Windshield wiper
bladesCheck for cracks or wear if they do not wipe properly. —
Doors and engine
hoodCheck that all doors and the engine hood operate smoothly as well as the trunk
lid and back hatch. Also make sure that all latches lock securely. Lubricate if nec-
essary. Make sure that the secondary latch keeps the hood from opening when
the primary latch is released.
When driving in areas using road salt or other corrosive materials, check lubrica-
tion frequently.MA-27, "
Lubricating
Locks, Hinges and Hood
Latch"
LampsMake sure that the headlamps, stop lamps, tail lamps, turn signal lamps, and oth-
er lamps are all operating properly and installed securely. Also check headlamp
aim. Clean the headlamps on a regular basis.—
ItemReference page
Warning lamps and
buzzers/chimesMake sure that all warning lamps and buzzers/chimes are operating properly. —
Windshield wiper and
washerCheck that the wipers and washer operate properly and that the wipers do not
streak.—
Windshield defrosterCheck that the air comes out of the defroster outlets properly and in sufficient
quantity when operating the heater or air conditioning.—
Steering wheelCheck that it has the specified play. Be sure to check for changes in the steering
condition, such as excessive play, hard steering or strange noises.
Free play: Less than 35 mm (1.38 in)—
SeatsCheck seat position controls such as seat adjusters, seat back recliner, etc. to
make sure they operate smoothly and that all latches lock securely in every po-
sition. Check that the head restraints move up and down smoothly and that the
locks (if equipped) hold securely in all latched positions. Check that the latches
lock securely for folding-down rear seat backs.—

MA-10
< SERVICE INFORMATION >
RECOMMENDED FLUIDS AND LUBRICANTS
RECOMMENDED FLUIDS AND LUBRICANTS
Fluids and LubricantsINFOID:0000000001704725
*1: For further details, see “Engine Oil Recommendation”.
*2: DEXRON
TM III / MERCONTM , or equivalent may also be used. Outside the continental United States and Alaska contact a NISSAN
dealership for more information regarding suitable fluids, including recommended brand(s) of DEXRONTM III / MERCONTM Automatic
Transmission Fluid.
*3: Using transaxle fluid other than Genuine NISSAN CVT Fluid NS-2 will damage the CVT, which is not covered by the NISSAN
new vehicle limited warranty.
*4: Available in mainland U.S.A. through your NISSAN dealer.
*5: For further details, see “Air conditioner specification label”.
SAE Viscosity NumberINFOID:0000000001704726
NISSAN recommends the use of an energy conserving oil in order to improve fuel economy.
Select only engine oils that meet the American Petroleum Institute (API) certification and International Lubrica-
tion Standardization and Approval Committee (ILSAC) certification and SAE viscosity standard. These oils
have the API certification mark on the front of the container. Oils which do not have the specified quality label
should not be used as they could cause engine damage.
DescriptionCapacity (Approximate)
Recommended Fluids/Lubricants
Liter US measure Imp measure
Fuel 52.0 13 3/4 gal 11 1/2 galUnleaded gasoline with an octane rating of
at least 87 AKI (RON 91)
Engine oil
Drain and refillWith oil filter
change3.9 4 1/8 qt 3 3/8 qt
• Engine oil with API Certification Mark *1
• Viscosity SAE 5W-30 Without oil filter
change3.7 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 qtGenuine NISSAN Long Life Anti-freeze
Coolant or equivalent
Manual transaxle fluid (MTF) 2.0 4 1/4 pt 3 1/2 ptEFF XT4447 M+ 75W-80 or API GL-4, Vis-
cosity SAE 75W-80
Automatic transaxle fluid (ATF) 7.9 8 3/8 qt 7 qtGenuine NISSAN Matic “D” ATF (Continen-
tal U.S. and Alaska) or Canada NISSAN
Automatic Transmission Fluid *2
CVT fluid 8.3 8 3/4 qt 7 1/4 qt Genuine NISSAN CVT Fluid NS-2 *3
Brake and clutch fluid — — —Genuine NISSAN Super Heavy Duty Brake
Fluid*4 or equivalent DOT 3 (US FMVSS
No. 116)
Multi-purpose grease — — — NLGI No. 2 (Lithium soap base)
Windshield washer fluid 4.5 4 3/4 qt 4 qtGenuine NISSAN Windshield Washer Con-
centrate Cleaner & Anti-Freeze or equiva-
lent
Air conditioning system refrigerant 0.45 ± 0.05 kg 0.99 ± 0.11 lb 0.99 ± 0.11 lb HFC-134a (R-134a) *5
Air conditioning
system oilTyp e 1
120 m4.1 fl oz 4.2 fl ozNISSAN A/C System Lubricant Type R or
equivalent *5
Typ e 2
100 m3.4 fl oz 3.5 fl ozNISSAN A/C System Lubricant Type S or
equivalent *5

MTC-4
< SERVICE INFORMATION >
PRECAUTIONS
- Do not allow A/C oil to come in contact with styrofoam parts. Damage may result.
General Refrigerant PrecautionINFOID:0000000001704277
WARNING:
• Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refrigerant. If acci-
dental system discharge occurs, ventilate work area before resuming service. Additional health and
safety information may be obtained from refrigerant and oil manufacturers.
• Do not release refrigerant into the air. Use approved recovery/recycling equipment to capture the
refrigerant every time an air conditioning system is discharged.
• Always wear eye and hand protection (goggles and gloves) when working with any refrigerant or air
conditioning system.
• Do not store or heat refrigerant containers above 52°C (126° F).
• Do not heat a refrigerant container with an open flame; if container warming is required, place the
bottom of the container in a warm pail of water.
• Do not intentionally drop, puncture, or incinerate refrigerant containers.
• Keep refrigerant away from open flames: poisonous gas will be produced if refrigerant burns.
• Refrigerant will displace oxygen, therefore be certain to work in well ventilated areas to prevent suf-
focation.
• Do not pressure test or leak test HFC-134a (R-134a) service equipment and/or vehicle air condition-
ing systems with compressed air during repair. Some mixtures of air and HFC-134a (R-134a) have
been shown to be combustible at elevated pressures. These mixtures, if ignited, may cause injury or
property damage. Additional health and safety information may be obtained from refrigerant manu-
facturers.
Oil PrecautionINFOID:0000000001704278
• Use only specified oil for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) components. If oil
other than that specified is used, compressor malfunction is likely to occur.
• The specified HFC-134a (R-134a) oil rapidly absorbs moisture from the atmosphere. The following handling
precautions must be observed:
- When removing refrigerant components from a vehicle, immediately cap (seal) the component to minimize
the entry of moisture from the atmosphere.
- When installing refrigerant components to a vehicle, do not remove the caps (unseal) until just before con-
necting the components. Connect all refrigerant loop components as quickly as possible to minimize the
entry of moisture into system.
- Only use the specified oil from a sealed container. Immediately reseal containers of oil. Without proper seal-
ing, oil will become moisture saturated and should not be used.
• Avoid breathing A/C refrigerant and oil vapor or mist. Exposure may irritate eyes, nose and throat.
Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refrigerant. If accidental
system discharge occurs, ventilate work area before resuming service. Additional health and safety informa-
tion may be obtained from refrigerant and oil manufacturers.
• Do not allow A/C oil to come in contact with styrofoam parts. Damage may result.
Precaution for Refrigerant ConnectionINFOID:0000000001704279
A new type refrigerant connection has been introduced to all refrigerant lines except the following location.
• Expansion valve to evaporator
• Refrigerant pressure sensor to condenser

TROUBLE DIAGNOSIS
MTC-49
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Recirculating-to-discharge Air Temperature Table
Ambient Air Temperature-to-operating Pressure Table
*1: With blower control dial in the "1" position
*2: With blower control dial in the "4" position.
TROUBLE DIAGNOSIS FOR UNUSUAL PRESSURE
Whenever system’s high and/or low side pressure(s) is/are unusual, diagnose using a manifold gauge. The
marker above the gauge scale in the following tables indicates the standard (usual) pressure range. Since the
standard (usual) pressure, however, differs from vehicle to vehicle, refer to above table (Ambient air tempera-
ture-to-operating pressure table).
Both High- and Low-pressure Sides are Too High
TEMP. Max. COLD
Mode control dial
(Ventilation) set
Intake door lever
(Recirculation) set
Blower speedMax. speed set
Engine speed Idle speed
Operate the air conditioning system for 10 minutes before taking measurements.Vehicle condition Indoors or in the shade (in a well-ventilated place)
Inside air (Recirculating air) at blower assembly inlet
Discharge air temperature at center ventilator
°C (°F) Relative humidity
%Air temperature
°C (°F)
50 - 6020 (68) 7.2 - 9.1 (45 - 48)
25 (77) 11.4 - 13.8 (53 - 57)
30 (86) 15.5 - 18.4 (60 - 65)
35 (95) 20.3 - 23.7 (69 - 75)
60 - 7020 (68) 9.1 - 10.9 (48 - 52)
25 (77) 13.8 - 16.2 (57 - 61)
30 (86) 18.4 - 21.3 (65 - 70)
35 (95) 23.7 - 27.1 (75 - 81)
Ambient air
High-pressure (Discharge side)
kPa (bar, kg/cm
2 , psi)Low-pressure (Suction side)
kPa (bar, kg/cm2 , psi) Relative humidity
%Air temperature
°C (°F)
50 - 7020 (68)843 - 1,036 *1
(11.08 - 13.63, 8.6 - 10.6, 122 - 150)159.0 - 194.0
(1.59 - 1.94, 1.62 - 1.98, 23.1 - 28.1)
25 (77)1,094 - 1,338 *1
(10.94 - 13.38, 11.2 - 13.6, 159 - 194)196.3 - 240.0
(1.96 - 2.40, 2.00 - 2.45, 28.5 - 34.8)
30 (86)1,298 - 1,590 *1
(12.98 - 15.90, 13.2 - 16.2, 188 - 231)248.0 - 302.7
(2.48 - 3.03, 2.53 - 3.09, 36.0 - 43.9)
35 (95)1,383 - 1,688 *2
(13.83 - 16.88, 14.1 - 17.2, 201 - 245)308.8 - 377.4
(3.09 - 3.77, 3.15 - 3.85, 44.8 - 54.7)
40 (104)1,628 - 1,988 *2
(16.28 - 19.88, 16.6 - 20.3, 236 - 288)377.4 - 461.2
(3.77 - 4.61, 3.85 - 4.70, 54.7 - 66.8)

TROUBLE DIAGNOSIS
MTC-51
< SERVICE INFORMATION >
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Low-pressure Side Becomes Negative
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high- and low-pressure
sides are too low.• There is a big temperature dif-
ference between liquid tank
outlet and inlet. Outlet tem-
perature is extremely low.
• Liquid tank inlet and expan-
sion valve are frosted.Liquid tank inside is slightly
clogged.• Replace liquid tank.
• Check oil for contamination.
• Temperature of expansion
valve inlet is extremely low as
compared with areas near liq-
uid tank.
• Expansion valve inlet may be
frosted.
• Temperature difference oc-
curs somewhere in high-pres-
sure side.High-pressure pipe located be-
tween liquid tank and expansion
valve is clogged.• Check and repair malfunc-
tioning parts.
• Check oil for contamination.
Expansion valve and liquid tank
are warm or only cool when
touched.Low refrigerant charge.
↓
Leaking fittings or componentsCheck refrigerant for leaks.
Refer to MTC-84, "
Checking of
Refrigerant Leaks" .
There is a big temperature dif-
ference between expansion
valve inlet and outlet while the
valve itself is frosted.Expansion valve closes a little
compared with the specification.
↓
1. Improper expansion valve
adjustment.
2. Malfunctioning expansion
valve.
3. Outlet and inlet may be
clogged.• Remove foreign particles by
using compressed air.
• Replace expansion valve.
• Check oil for contamination.
An area of the low-pressure pipe
is colder than areas near the
evaporator outlet.Low-pressure pipe is clogged or
crushed.• Check and repair malfunc-
tioning parts.
• Check oil for contamination.
Air flow volume is not enough or
is too low.Evaporator is frozen.• Check thermo control amp.
Refer to MTC-37, "
Magnet
Clutch Circuit (If Equipped)"
.
• Replace compressor.
• Repair evaporator fins.
• Replace evaporator.
• Refer to MTC-33, "
Front
Blower Motor Circuit" .
AC353A
Gauge indication Refrigerant cycle Probable cause Corrective action
Low-pressure side sometimes be-
comes negative.• Air conditioning system does
not function and does not cy-
clically cool the compart-
ment air.
• The system constantly func-
tions for a certain period of
time after compressor is
stopped and restarted.Refrigerant does not discharge
cyclically.
↓
Moisture is frozen at expan-
sion valve outlet and inlet.
↓
Water is mixed with refrigerant.• Drain water from refrigerant
or replace refrigerant.
• Replace liquid tank.
AC354A