2007 NISSAN LATIO coolant

CYLINDER HEAD
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If the engine speed is out of the specified range, check battery liquid for proper gravity. Check engine
speed again with normal battery gravity.

If compression pressure is below minimum value, check valve clearances and parts associated with
combustion chamber (Valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). After the checking, measure the compression pressure again.

If some cylinder has low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, piston rings may be worn out or damaged. Check
piston rings and replace if necessary.
–If the compression pressure remains at low level despite the addition of engine oil, valves may be mal-
functioning. Check valves for damage. Replace valve or valve seat accordingly.

If two adjacent cylinders have respectively low compression pressure and their compression remains
low even after the addition of engine oil, cylinder head gasket is leaking. In such a case, replace cylin-
der head gasket.
9. After inspection is completed, install removed parts.
10. Start the engine, and confirm that the engine runs smoothly.
11. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-83, "
TROUBLE DIAGNOSIS" .
ComponentsEBS00U7R
Removal and InstallationEBS00U7S
REMOVAL
WA RN ING:

Put a “CAUTION: FLAMMABLE” sign in the workshop.

Be sure to work in a well ventilated area and furnish workshop with a CO2 fire extinguisher.

Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.
1. Release the fuel pressure. Refer to EC-81, "
FUEL PRESSURE RELEASE" .
2. Drain engine coolant and engine oil. Refer to CO-8, "
ENGINE COOLANT" and LU-5, "ENGINE OIL" .
3. Remove front fender protector (RH). Refer to EI-22, "
FENDER PROTECTOR" .
4. Remove drive belt. Refer to EM-13, "
Removal and Installation" .
5. Remove the following components and related parts.

Exhaust manifold; Refer to EM-21, "EXHAUST MANIFOLD" .

Intake manifold; Refer to EM-18, "INTAKE MANIFOLD" .

Fuel tube and fuel injector assembly; Refer to EM-33, "FUEL INJECTOR AND FUEL TUBE" .
1. Cylinder head assembly 2. Cylinder head bolt 3. Cylinder head gasket
A. Refer to EM-65
PBIC3542J

ENGINE ASSEMBLY
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ComponentsEBS00T6Q
Removal and Installation EBS00T6R
WA RN ING:

Situate the vehicle on a flat and solid surface.

Place chocks at front and back of rear wheels.

Attach proper slingers and bolts described in PARTS CATALOG if engine slingers are not
equipped.
CAUTION:

Always be careful to work safely, avoid forceful or uninstructed operations.

Do not start working until exhaust system and coolant are cool enough.

If items or work required are not covered by the engine section, refer to the applicable sections.

Always use the support point specified for lifting.
1. Torque rod (RH) 2. Engine mounting Insulator (RH) 3. Engine mounting bracket (RH)
4. Bracket 5. Rear torque rod 6. Engine through bolt
7. Engine mounting bracket (LH) 8. Engine mounting insulator (LH)
WBIA0787E

EM-74Revision: June 2006
ENGINE ASSEMBLY
2007 Versa

Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at the rear axle jacking point with a transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-42, "Garage Jack and
Safety Stand and 2-Pole Lift" .
REMOVAL
Remove the engine and the transaxle assembly from the vehicle downward. Separate the engine and the tran-
saxle.
1. Remove engine undercover
2. Drain engine coolant from radiator. Refer to CO-8, "
Changing Engine Coolant" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belt.
3. Remove front fender protector (RH and LH); Refer to EI-22, "
FENDER PROTECTOR" .
4. Remove exhaust front tube; Refer to EX-3, "
EXHAUST SYSTEM" .
5. Remove drive shafts (LH and RH) from steering knuckle. Refer to FAX-8, "
FRONT DRIVE SHAFT" .
6. Remove transaxle joint bolts which pierce at oil pan (upper) lower rear side. Refer to AT - 2 5 3 , "
TRAN-
SAXLE ASSEMBLY" (A/T models), CVT-207, "TRANSAXLE ASSEMBLY" (CVT) or MT-15, "TRAN-
SAXLE ASSEMBLY" (M/T models).
7. Remove rear torque rod (1).
NOTE:
A/T model shown CVT and M/T models similar.
8. Remove hood assembly. Refer to BL-14, "
HOOD" .
9. Remove cowl top cover and cowl top extension assembly. Refer to EI-20, "
COWL TOP" .
10. Release fuel pressure. Refer to EC-81, "
FUEL PRESSURE RELEASE" .
11. Remove battery and battery tray; Refer to SC-4, "
BATTERY" .
12. Remove drive belt; Refer to EM-13, "
Components" .
13. Remove air duct and air cleaner case assembly; Refer to EM-16, "
AIR CLEANER AND AIR DUCT" .
14. Remove cooling fan assembly.
15. Remove radiator hose (upper and lower). Refer to CO-11, "
RADIATOR" .
16. Disconnect A/T, CVT fluid cooler hoses. Refer to CO-11, "
RADIATOR"
17. Disconnect all connections of engine harness around the engine mounting insulator (LH), and then tem-
porarily secure the engine harness into the engine side.
CAUTION:
Protect connectors using a resin bag to protect against foreign materials during the operation.
18. Disconnect fuel feed hose at engine side. Refer to EM-33, "
Components" .
19. Disconnect heater hoses, and install plugs them to prevent engine coolant from draining. Refer to CO-20,
"Components" .
20. Disconnect control cable from transaxle. Refer to CVT-191, "
SHIFT CONTROL SYSTEM" (CVT) or AT -
229, "SHIFT CONTROL SYSTEM" (A/T), MT-12, "CONTROL LINKAGE" (MT).
21. Remove ground cable at transaxle side.
22. Remove ground cable between front cover and vehicle.
23. Remove alternator. Refer to SC-24, "
CHARGING SYSTEM" .
LBIA0460E

EM-76Revision: June 2006
ENGINE ASSEMBLY
2007 Versa
INSTALLATION
Note the following, and install in the reverse order of removal.

Do not allow engine oil to get on engine mounting insulator. Be careful not to damage engine mounting
insulator.

When installation directions are specified, install parts according to the directions. Refer to EM-73, "Com-
ponents" .

Make sure that each mounting insulator is seated properly, and tighten nuts and bolts.

Tighten engine mounting insulator (RH) bolts in the numerical
order shown.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.: Vehicle front
WBIA0785E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

CYLINDER BLOCK
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19. Loosen main bearing cap bolts in reverse order as shown, and
remove them.
NOTE:
Before loosening main bearing cap bolts, measure crankshaft
end play. Refer to EM-95, "
CRANKSHAFT END PLAY" .
20. Remove main bearing caps.

Tap main bearing caps lightly using a suitable tool for
removal.
CAUTION:
Be careful not to damage the mounting surface.
21. Remove crankshaft.
CAUTION:

Be careful not to damage or deform signal plate (1)
mounted on rear end of crankshaft (A).

When setting crankshaft on a flat floor surface, use a
block of wood to avoid interference between signal plate
and the floor surface.

Never remove signal plate unless it is necessary to do so.
22. Pull rear oil seal out from rear end of crankshaft.
23. Remove main bearings and thrust bearings from cylinder block
and main bearing caps.
CAUTION:
Identify installation positions, and store them without mix-
ing them up.
ASSEMBLY
1. Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to
remove any foreign material.
CAUTION:
Use a goggles to protect your eye.
2. Install water drain plug (1) to cylinder block.

Apply liquid gasket to the drain plug thread.
Use Genuine Silicone RTV Sealant or equivalent. Refer to
GI-46, "
Recommended Chemical Products and Sealants" .
3. Remove dust, dirt, and engine oil on the bearing mating sur-
faces of cylinder block and main bearing cap.
4. Install thrust bearings to the both sides of the No. 3 journal hous-
ing (B) on cylinder block.

Install thrust bearings with the oil groove (A) facing crankshaft
arm (outside).
: Engine front
PBIC3235J
PBIC3234J
: Engine front
9.8 N·m (1.0 kg-m, 87 in-lb)
PBIC3228J
: Engine front
PBIC3258J

EM-98Revision: June 2006
CYLINDER BLOCK
2007 Versa
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with a micrometer (A).
Connecting Rod Bushing Oil Clearance
(Connecting rod bushing oil clearance) = (Connecting rod bushing inner diameter) – (Piston pin outer diame-
ter)

If the measured value is out of the standard, replace connecting rod assembly and/or piston and piston pin
assembly.

If replacing piston and piston pin assembly, refer to EM-95, "PISTON TO PISTON PIN OIL CLEARANCE"
.

If replacing connecting rod assembly, refer to EM-98, "Connecting Rod Bushing Oil Clearance" to select
connecting rod bearing.
CYLINDER BLOCK TOP SURFACE DISTORTION

Using a scraper, remove gasket on the cylinder block surface, and also remove engine oil, scale, carbon,
or other contamination.
CAUTION:
Be careful not to allow gasket flakes to enter engine oil or engine coolant passages.

Measure the distortion on the cylinder block upper face at some
different points in six directions with a straight edge (A) and
feeler gauge (B).

If it exceeds the limit, replace cylinder block.
MAIN BEARING HOUSING INNER DIAMETER

Install main bearing cap without main bearings installed, and tighten main bearing cap bolts to the speci-
fied torque. Refer to EM-81, "
ASSEMBLY" for the tightening procedure.

Measure the inner diameter of main bearing housing with a bore gauge. Standard: 19.989 - 19.995 mm (0.7870 - 0.7872 in)
PBIC3266J
Standard : 0.005 - 0.023 mm (0.0002 - 0.0009 in)
Limit : 0.03 mm (0.0012 in)
Limit: 0.1 mm (0.004 in)
PBIC3250J

TERMINOLOGY
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TERMINOLOGYPFP:00011
SAE J1930 Terminology List EAS00207
All emission related terms used in this publication in accordance with SAE J1930 are listed. Accordingly, new
terms, new acronyms/abbreviations and old terms are listed in the following chart.
NEW TERMNEW ACRONYM /
ABBREVIATIONOLD TERM
Air cleaner ACL Air cleaner
Barometric pressure BARO ***
Barometric pressure sensor-BCDD BAROS-BCDD BCDD
Camshaft position CMP ***
Camshaft position sensor CMPS Crank angle sensor
Canister *** Canister
Carburetor CARB Carburetor
Charge air cooler CAC Intercooler
Closed loop CL Closed loop
Closed throttle position switch CTP switch Idle switch
Clutch pedal position switch CPP switch Clutch switch
Continuous fuel injection system CFI system ***
Continuous trap oxidizer system CTOX system ***
Crankshaft position CKP ***
Crankshaft position sensor CKPS ***
Data link connector DLC ***
Data link connector for CONSULT-II DLC for CONSULT-II Diagnostic connector for CONSULT-II
Diagnostic test mode DTM Diagnostic mode
Diagnostic test mode selector DTM selector Diagnostic mode selector
Diagnostic test mode I DTM I Mode I
Diagnostic test mode II DTM II Mode II
Diagnostic trouble code DTC Malfunction code
Direct fuel injection system DFI system ***
Distributor ignition system DI system Ignition timing control
Early fuel evaporation-mixture heater EFE-mixture heater Mixture heater
Early fuel evaporation system EFE system Mixture heater control
Electrically erasable programmable read
only memoryEEPROM ***
Electronic ignition system EI system Ignition timing control
Engine control EC ***
Engine control module ECM ECCS control unit
Engine coolant temperature ECT Engine temperature
Engine coolant temperature sensor ECTS Engine temperature sensor
Engine modification EM ***
Engine speed RPM Engine speed
Erasable programmable read only memory EPROM ***
Evaporative emission canister EVAP canister Canister
Evaporative emission system EVAP system Canister control solenoid valve
Exhaust gas recirculation valve EGR valve EGR valve

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ALPHABETICAL INDEX
Collision diagnosis .......................................... SRS-54
Combination lamp, rear, removal and installation LT-87
Combination meter ................................................ DI-5
Combination meter removal and installation - See Instru-
ment panel .......................................................... IP-11
COMBSW - Wiring diagram ............................... LT-67
Component Location (manual A/C) ................ MTC-25
Compression pressure ...................................... EM-62
Compressor mounting .................................... MTC-84
Compressor special service tool .................... MTC-12
Condenser ...................................................... MTC-88
Connecting rod .................................................. EM-97
Connecting rod bearing clearance .................. EM-101
Connecting rod bushing clearance .................... EM-97
CONSULT for ABS .......................................... BRC-20
CONSULT general information .......................... GI-37
CONSULT-II for engine ................................... EC-113
CONSULT-II function (EPS) ............................ STC-13
CONSULT-II Reference value (CVT) .............. CVT-57
Control lever (M/T) ............................................ MT-12
Control units (terminal arrangement) ................ PG-72
Control valve (CVT) ......................................... CVT-29
Converter housing installation ............ AT-254, AT-369
COOL/F - Wiring diagram ............................... EC-448
Coolant mixture ratio ......................................... MA-12
Cooling circuit (engine) ....................................... CO-7
Cooling fan ........................................................ CO-15
Cooling fan motor ............................................ EC-443
Corrosion protection ......................................... BL-237
Coupling sleeve (M/T) ....................................... MT-18
Crankcase ventilation system - See Positive crankcase
ventilation .......................................................... EC-44
Crankshaft ......................................................... EM-77
Crankshaft position sensor (POS) ................... EC-319
Crash zone sensor .......................................... SRS-49
CVT air breather hose ................................... CVT-205
CVT control system ......................................... CVT-22
CVT cross-sectional view ................................ CVT-21
CVT Electrical parts location ........................... CVT-40
CVT fluid checking ............... CVT-16, CVT-43, MA-20
CVT fluid cooler cleaning ................................ CVT-18
CVT fluid replacement ........................ CVT-17, MA-21
CVT fluid temparature sensor ......................... CVT-85
CVT hydraulic control system ......................... CVT-23
CVT indicator ...................................................... DI-42
CVT self-diagnoses ........................... CVT-60, CVT-67
CVT shift lock system .................................... CVT-197
CVT trouble diagnoses .................................... CVT-34
CVTIND - Wiring diagram ................................... DI-43
Cylinder block .................................................... EM-77
Cylinder head .................................................... EM-62
Cylinder head bolt tightening ............................. EM-65
D
D/LOCK - Wiring diagram ...................... BL-26
, BL-31
Data link connector ............. EC-115, EC-127, EC-592
DEF - Wiring diagram ....................................... GW-52
Diagnosis sensor unit ...................................... SRS-52
Diagnostic trouble code (DTC) for OBD system . EC-8,
EC-48
Diagnostic trouble code (DTC) inspection priority chart
EC-89
, CVT-34
Differential gear (FF M/T) .................................. MT-22
Differentil side oil seal .................................... CVT-206
DLC - Wiring diagram ...................................... EC-592
Door glass .......................................... GW-43, GW-47
Door glass Fitting Adjustment(Front) ................ GW-46
Door glass Fitting Adjustment(Rear) ................ GW-49
Door mirror ....................................................... GW-65
Door trim .............................................................. EI-27
Door, front ......................................................... GW-43
Door, rear ......................................................... GW-47
Drive shaft ......................................................... MA-27
Driver air bag ................................................... SRS-41
Dropping resistor (A/T) .................................... AT-150
DTC work support ............................................ EC-122
DTRL - Wiring diagram ....................................... LT-31
Duct and grilles ............................................... MTC-75
E
ECM input/output signal .................................. EC-105
ECM power supply .......................................... EC-144
ECTS - Wiring diagram .................................... EC-202
Electric sunroof .................................................. RF-10
Electric throttle control actuator .. EM-18, EC-499, EC-
506, EC-511
Electrical load signal circuit ............................. EC-562
Electrical unit ..................................................... PG-72
Electrical units location ...................................... PG-64
Electronic ignition (EI) system ........................... EC-25
Electronic key ..................................................... BL-80
ENG SS - Wiring diagram ................................ AT-114
Engine control circuit diagram ......................... EC-103
Engine control component parts location .......... EC-96
Engine control module (ECM) ......................... EC-427
Engine control system diagram ......................... EC-22
Engine coolant ..................................................... CO-8
Engine coolant temperature sensor (ECTS) ... EC-200,
EC-212
Engine fail-safe system ..................................... EC-91
Engine oil ............................................................. LU-5
Engine oil precautions .......................................... GI-7
Engine removal .................................................. EM-73
EPS - Wiring diagram ........................................ STC-9
EPS control unit input/output signal reference values ..
STC-11
EPS system description ..................................... STC-5
EPS system diagram ......................................... STC-6
ETC1 - Wiring diagram .................................... EC-500
ETC2 - Wiring diagram .................................... EC-495
ETC3 - Wiring diagram .................................... EC-507
EVAP canister ................................................... EC-34
EVAP canister purge volume control solenoid valve ....
EC-354
, EC-362
EVAP canister vent control valve ...... EC-369, EC-376
EVAP control system (small leak) diagnosis .. EC-346,