2006 NISSAN VERSA check engine

CO-8Revision: June 2006
ENGINE COOLANT
2007 Versa
ENGINE COOLANTPFP:KQ100
InspectionEBS00T7A
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.
WAR NIN G:
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 CoolantEBS00T7B
WAR NIN G:

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-77, "
CYLINDER
BLOCK" .
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, "
RADIATOR" .
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to CO-9, "
FLUSHING COOLING SYSTEM" .
REFILLING ENGINE COOLANT
1. Install reservoir tank if removed. Refer to CO-11, "RADIATOR" .
2. Install radiator drain plug.
SM A41 2B
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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Revision: June 20062007 Versa

If water drain plug on cylinder block is removed, close and tighten it. Refer to EM-77, "CYLIN-
DER BLOCK" .
CAUTION:
Be sure to clean radiator drain plug and install with new O-ring. Refer to CO-11, "
Components" .
3. Make sure that each hose clamp has been firmly tightened.
4. Remove air duct assembly. Refer to EM-16, "
AIR CLEANER AND AIR DUCT" .
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-11, "
RECOM-
MENDED 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-16, "
AIR CLEANER AND AIR DUCT" .
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, "RADIATOR" .
2. Install radiator drain plug.
PBIC3802E
SM A18 2B

CO-12Revision: June 2006
RADIATOR
2007 Versa
Removal and InstallationEBS00T7D
WAR NIN G:
Do not remove radiator cap when the engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter of a
turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-8, "Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belt.
2. Remove air duct (inlet). Refer to EM-16, "
AIR CLEANER AND AIR DUCT" .
3. Remove reservoir tank as follows:
a. Disconnect reservoir tank hose.
b. Release the tab (A) in the direction shown by the arrow ( ).
c. Lift up while removing the reservoir tank hose, and remove it.
4. Disconnect harness connector from fan motors, and move harness to aside.
5. Disconnect CVT or A/T fluid cooler hoses if equipped.

Install plug to avoid leakage of CVT or A/T fluid if equipped.
6. Remove radiator hoses (upper and lower).
7. Remove radiator core support cover. Refer toBL-20, "
RADIATOR CORE SUPPORT" .
8. Remove radiator core support (upper) bolts, bolts of stationary
part on the radiator core support side and clip. Lift radiator from
radiator (upper) mount part of radiator core support (upper) (2).
9. Move radiator assembly (1) to the rearward direction of vehicle,
and then lift it upward to remove.
CAUTION:
Do not damage or scratch A/C condenser if equipped and
radiator core when removing.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
Do not damage or scratch A/C condenser if equipped and radiator core when removing.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant. Refer to CO-8, "LEVEL CHECK" .

Start and warm up engine. Visually check if there is no leaks of engine coolant and CVT or A/T fluid if
equipped. Refer to CVT-16, "
CVT FLUID" or AT-16, "A/T FLUID" .
PBIC3800E
PBIC3805E

WATER PUMP
CO-17
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Revision: June 20062007 Versa
WATER P UM PPFP:21020
ComponentsEBS00U84
Removal and InstallationEBS00U85
REMOVAL
1. Drain engine coolant. Refer to CO-8, "DRAINING ENGINE COOLANT" .
CAUTION:
Perform this step when the engine is cold.
2. Remove drive belt auto-tensioner. Refer to EM-37, "
TIMING CHAIN" .
3. Remove water pump.
CAUTION:

Handle water pump vane so that it does not contact any other parts.

Water pump cannot be disassembled and should be replaced as a unit.
INSPECTION AFTER REMOVAL

Visually check that there is no significant dirt or rusting on water
pump body and vane (A).

Make sure that there is no looseness in vane shaft, and that it
turns smoothly when rotated by hand.

Replace water pump, if necessary.
INSTALLATION
Installation is in the reverse order of removal.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant. Refer to CO-8, "Inspection" .

Start and warm up the engine. Visually check if there is no leaks of engine coolant.
1. Gasket 2. Water pump
PBIC3921E
PBIC3313J

CO-18Revision: June 2006
THERMOSTAT
2007 Versa
THERMOSTATPFP:21200
ComponentsEBS00U6H
Removal and InstallationEBS00U6I
REMOVAL
1. Drain engine coolant. Refer to CO-8, "DRAINING ENGINE COOLANT" .
2. Remove water inlet.
3. Remove thermostat.
4. Remove water pump. Refer to CO-17, "
WAT ER PUM P" .
5. Remove thermostat housing.
INSPECTION AFTER REMOVAL

Place a thread (A) so that it is caught in the valves of thermostat
(1). Immerse fully in a container (B) filled with water. Heat while
stirring.

The valve opening temperature is the temperature at which the
valve opens and falls from the thread.

Continue heating. Check the full open valve lift amount.

After checking the maximum valve lift amount, lower the water
temperature and check the valve closing temperature.
1. Thermostat housing 2. Water hose (models with oil cooler) 3. Radiator hose (lower)
4. Water inlet 5. Thermostat 6. Rubber ring
7. Gasket A. To oil cooler B. To radiator
Engine front
PBIC4485E
PBIC3314J

THERMOSTAT
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Revision: June 20062007 Versa

If out of the specification, replace thermostat.
INSTALLATION
Installation is in the reverse order of removal.
Thermostat
CAUTION:
Replace the rubber ring with a new one.

Install thermostat while making rubber ring (1) groove fit to ther-
mostat flange (A) around the whole circumference.

Install thermostat (1) into the thermostat housing (2) with jiggle
valve (A) facing upwards.
Thermostat Housing
CAUTION:
Replace the rubber ring with a new one.

Securely insert the rubber ring into the mating groove of thermostat housing and install it.

Install the thermostat housing to the cylinder block without displacing the gasket from the gasket position.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant. Refer to CO-8, "CHECKING COOLING SYSTEM FOR LEAKS" .

Start and warm up the engine. Visually check for engine coolant leaks.
ItemsThermostat
Valve opening temperature 80.5 - 83.5°C (177 - 182°F)
Maximum valve lift 8 mm/ 95°C (0.315 in/ 203°F)
Valve closing temperature 77°C (171°F)
PBIC3315J
PBIC3548J

CO-22Revision: June 2006
WATER OUTLET AND WATER CONTROL VALVE
2007 Versa
Water H oses
Install water hoses (3),(5) as shown.

Electric throttle control actuator (1)

Clamp (2)

Water outlet (4)

Paint mark (A)

Clamp shall not interfere with the bulged area (B)
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant. Refer to CO-8, "Inspection" .

Start and warm up the engine. Visually check if there is no leaks of engine coolant.
PBIC4703E

CVT-1
CVT
C TRANSMISSION/TRANSAXLE
CONTENTS
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SECTION CVT
A
B
CVT
Revision: June 20062007 Versa INDEX FOR DTC ........................................................ 6
Alphabetical Index .................................................... 6
DTC No. Index ......................................................... 7
PRECAUTIONS .......................................................... 8
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 8
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 8
OPERATION PROCEDURE ................................. 8
Precautions for On Board Diagnostic (OBD) System
of CVT and Engine ................................................... 9
Service After Replacing TCM and Transaxle
Assembly .................................................................. 9
SERVICE AFTER REPLACING TCM AND
TRANSAXLE ASSEMBLY ..................................... 9
PATTERN A .......................................................... 9
PATTERN B .......................................................... 9
PATTERN C .........................................................11
Removal and Installation Procedure for CVT Unit
Connector ................................................................11
REMOVAL ............................................................11
INSTALLATION ................................................... 12
Precautions ............................................................ 13
Service Notice or Precautions ................................ 13
CVT FLUID COOLER SERVICE ......................... 13
OBD-II SELF-DIAGNOSIS .................................. 14
PREPARATION ......................................................... 15
Special Service Tools ............................................. 15
Commercial Service Tools ...................................... 15
CVT FLUID ............................................................... 16
Checking CVT Fluid ............................................... 16
FLUID LEVEL CHECK ........................................ 16
FLUID CONDITION CHECK ............................... 17
Changing CVT Fluid ............................................... 17
CVT Fluid Cooler Cleaning .................................... 18
CVT FLUID COOLER CLEANING PROCEDURE
... 18
CVT FLUID COOLER DIAGNOSIS PROCE-DURE .................................................................. 19
CVT FLUID COOLER INSPECTION PROCE-
DURE .................................................................. 20
CVT FLUID COOLER FINAL INSPECTION ........ 20
CVT SYSTEM ............................................................ 21
Cross-sectional View - RE0F08A ........................... 21
Control System ....................................................... 22
Hydraulic Control System ....................................... 23
TCM Function ......................................................... 24
CONTROL SYSTEM OUTLINE .......................... 24
CONTROL SYSTEM DIAGRAM ......................... 24
CAN Communication .............................................. 25
SYSTEM DESCRIPTION .................................... 25
Input/Output Signal of TCM .................................... 25
Line Pressure and Secondary Pressure Control .... 26
NORMAL CONTROL .......................................... 26
FEEDBACK CONTROL ...................................... 26
Shift Control ............................................................ 26
“D” POSITION ..................................................... 27
OVERDRIVE-OFF MODE ................................... 27
“L” POSITION ...................................................... 27
DOWNHILL ENGINE BRAKE CONTROL (AUTO
ENGINE BRAKE CONTROL) .............................. 27
ACCELERATION CONTROL .............................. 27
Lock-up and Select Control .................................... 28
TORQUE CONVERTER CLUTCH AND SELECT
CONTROL VALVE CONTROL ............................ 28
Control Valve .......................................................... 29
FUNCTION OF CONTROL VALVE ..................... 29
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 30
Introduction ............................................................. 30
OBD-II Function for CVT System ........................... 30
One or Two Trip Detection Logic of OBD-II ............ 30
ONE TRIP DETECTION LOGIC ......................... 30
TWO TRIP DETECTION LOGIC ......................... 30
OBD-II Diagnostic Trouble Code (DTC) ................. 30
HOW TO READ DTC AND 1ST TRIP DTC ......... 30
HOW TO ERASE DTC ........................................ 31
HOW TO ERASE DTC (WITH CONSULT-II) ....... 32