
PRECAUTIONSAT-9
< SERVICE INFORMATION >
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• Gaskets, seals and O-rings should be replaced any time the A/T is disassembled.
• It is very important to perform func tional tests whenever they are indicated.
• The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent springs
and small parts from becoming scattered or lost.
• Properly installed valves, sleeves, plugs, etc. will  slide along bores in valve body under their own weight.
• 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 pl ace 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  AT-
18, "A/T Fluid Cooler Cleaning".
• 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
AT-17, "
Changing A/T Fluid", AT-17, "Checking A/T Fluid".
Service Notice or PrecautionINFOID:0000000005928067
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  CO-16, "
Removal and Installation" (HR16DE engine models), CO-
40, "Removal and Installation" (MR18DE engine models).
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 engi ne 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 flui d 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 e xception 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-82, "
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-39, "
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 us ing ECM self-diagnostic results mode* only when the
OD OFF indicator lamp does not indicate any malfunctions.
- Transmission range switch
- A/T 1GR, 2GR, 3GR, or 4GR function
Revision: May 2010 2011 Versa 

CO-1
ENGINE
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CONTENTS
ENGINE COOLING SYSTEM
HR16DE
PRECAUTION ....... ........................................
3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution for Liquid Gasket  .....................................3
PREPARATION ............................................5
PREPARATION .............................................. .....5
Special Service Tool  ........................................... ......5
Commercial Service Tool  ..........................................5
SYMPTOM DIAGNOSIS  ...............................7
OVERHEATING CAUSE ANALYSIS  ............. .....7
Troubleshooting Chart ...............................................7
FUNCTION DIAGNOSIS .. .............................9
DESCRIPTION ............................................... .....9
Engine Cooling System  ....................................... ......9
Engine Cooling System Schematic  .........................10
ON-VEHICLE MAINTENANCE ....................11
ENGINE COOLANT  ....................................... ....11
Inspection ............................................................ ....11
Changing Engine Coolant  .......................................11
RADIATOR .........................................................14
Checking Radiator Cap  ....................................... ....14
Checking Radiator ...................................................14
ON-VEHICLE REPAIR  .................................16
RADIATOR ..................................................... ....16
Component .......................................................... ....16
Removal and Installation .........................................16
COOLING FAN ..................................................18
Component (Models with A/C) ............................. ....18
Component (Models without A/C) ............................18
Removal and Installation  .........................................19
Disassembly and Assembly .....................................19
WATER PUMP  ..................................................20
Exploded View  .........................................................20
Removal and Installation  .........................................20
Inspection ................................................................21
THERMOSTAT ..................................................22
Exploded View  .........................................................22
Removal and Installation  .........................................22
Inspection ................................................................23
WATER OUTLET  ..............................................24
Exploded View  .........................................................24
Removal and Installation  .........................................24
Inspection ................................................................25
SERVICE DATA AND SPECIFICATIONS 
(SDS) ............... .......................................... ...
26
SERVICE DATA AND SPECIFICATIONS 
(SDS) .................................................................
26
Periodical Maintenance Specification  .................. ....26
Radiator ...................................................................26
Thermostat ..............................................................26
MR18DE
SERVICE INFORMATION  .. .........................
27
PRECAUTIONS .................................................27
Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
27
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect  ...................................
27
Precaution for Liquid Gasket  ...................................28
PREPARATION .................................................30
Revision: May 2010 2011 Versa 

CO-2
Special Service Tool  ...............................................30
Commercial Service Tool  .......................................30
OVERHEATING CAUSE ANALYSIS  ................32
Troubleshooting Chart  ......................................... ...32
COOLING SYSTEM ...........................................34
Cooling Circuit  ..................................................... ...34
ENGINE COOLANT  ...........................................36
Inspection ............................................................ ...36
Changing Engine Coolant  .......................................36
RADIATOR ........................................................39
Checking Radiator Cap  ....................................... ...39
Checking Radiator  ..................................................39
Component .............................................................40
Removal and Installation  ........................................40
Inspection ...............................................................41
COOLING FAN  ..................................................43
Component (Models with A/C)  ................................43
Component (Models without A/C)  ...........................43
Removal and Installation .........................................44
Disassembly and Assembly  ................................. ...44
WATER PUMP ...................................................45
Component .......................................................... ...45
Removal and Installation .........................................45
THERMOSTAT ............................................... ...47
Component .......................................................... ...47
Removal and Installation .........................................47
Inspection ............................................................. ...48
WATER OUTLET AND WATER CONTROL 
VALVE ...............................................................
50
Component .......................................................... ...50
Removal and Installation .........................................51
Inspection ............................................................. ...53
SERVICE DATA AND SPECIFICATIONS 
(SDS) .................................................................
55
Standard and Limit  ............................................... ...55
Revision: May 2010 2011 Versa 
![NISSAN TIIDA 2011  Service Repair Manual OVERHEATING CAUSE ANALYSISCO-7
< SYMPTOM DIAGNOSIS > [HR16DE]
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SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000005930774
Symptom
Check it NISSAN TIIDA 2011  Service Repair Manual OVERHEATING CAUSE ANALYSISCO-7
< SYMPTOM DIAGNOSIS > [HR16DE]
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SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000005930774
Symptom
Check it](/manual-img/5/57396/w960_57396-1006.png)
OVERHEATING CAUSE ANALYSISCO-7
< SYMPTOM DIAGNOSIS > [HR16DE]
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OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000005930774
Symptom
Check items
Cooling sys-
tem parts 
malfunction Poor heat transfer
Water pump malfunction Worn or loose drive belt
—
Thermostat stuck closed
—
Damaged fins Dust contamination or pa-
per clogging
Physical damage
Clogged radiator cooling 
tube Excess foreign material 
(rust, dirt, sand, etc.)
Reduced air flow Cooling fan does not oper-
ate
Fan assembly —
High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud —Radiator shroud —
Improper engine coolant 
mixture ratio —
Engine coolant viscosity —
Poor engine coolant quality — —
Insufficient engine coolant Engine coolant leaks Cooling hose
Loose clamp
Cracked hose
Water pump Poor sealing
Reservoir tank cap Loose
Poor sealing
Radiator O-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tank Exhaust gas leaks into cool-
ing systemCylinder head deterioration
Cylinder head gasket deteri-
oration
Revision: May 2010
2011 Versa 
![NISSAN TIIDA 2011  Service Repair Manual CO-8
< SYMPTOM DIAGNOSIS >[HR16DE]
OVERHEATING CAUSE ANALYSIS
Except cool-
ing system 
parts mal-
function—
Overload on engine Abusive driving
High engine rpm under no 
load
Driving in low gear for  NISSAN TIIDA 2011  Service Repair Manual CO-8
< SYMPTOM DIAGNOSIS >[HR16DE]
OVERHEATING CAUSE ANALYSIS
Except cool-
ing system 
parts mal-
function—
Overload on engine Abusive driving
High engine rpm under no 
load
Driving in low gear for](/manual-img/5/57396/w960_57396-1007.png)
CO-8
< SYMPTOM DIAGNOSIS >[HR16DE]
OVERHEATING CAUSE ANALYSIS
Except cool-
ing system 
parts mal-
function—
Overload on engine Abusive driving
High engine rpm under no 
load
Driving in low gear for ex-
tended time
Driving at extremely high 
speed
Power train system mal-
function
—
Installed improper size 
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air 
flow Blocked bumper
Installed front bumper fas-
cia cover
—
Blocked  radiator  grille Mud contamination or paper 
clogging
Blocked radiator Blocked air flow
Blocked condenser
Installed large fog lamp
Symptom
Check items
Revision: May 2010 2011 Versa 
![NISSAN TIIDA 2011  Service Repair Manual CO-32
< SERVICE INFORMATION >[MR18DE]
OVERHEATING CAUSE ANALYSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000005930804
Symptom
Check items
Cooling sys-
tem parts 
malfunction Poor he NISSAN TIIDA 2011  Service Repair Manual CO-32
< SERVICE INFORMATION >[MR18DE]
OVERHEATING CAUSE ANALYSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000005930804
Symptom
Check items
Cooling sys-
tem parts 
malfunction Poor he](/manual-img/5/57396/w960_57396-1031.png)
CO-32
< SERVICE INFORMATION >[MR18DE]
OVERHEATING CAUSE ANALYSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000005930804
Symptom
Check items
Cooling sys-
tem parts 
malfunction Poor heat transfer
Water pump malfunction Worn or loose drive belt
—
Thermostat stuck closed Thermostat
Damaged fins
Dust contamination or pa-
per clogging
Physical damage
Clogged radiator cooling 
tube Excess foreign material 
(rust, dirt, sand, etc.)
Reduced air flow Cooling 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 coolant Engine coolant leaksCooling hose
Loose clamp
Cracked hose
Water pump Poor sealing
Radiator cap Loose
Poor sealing
Radiator O-ring for da
mage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tank Exhaust gas leaks into cool-
ing system Cylinder head deterioration
Cylinder head gasket deteri-
oration
Revision: May 2010
2011 Versa 
![NISSAN TIIDA 2011  Service Repair Manual OVERHEATING CAUSE ANALYSISCO-33
< SERVICE INFORMATION > [MR18DE]
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Except cool-
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parts mal-
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Overload on engine Abusive driving
High engine rpm und NISSAN TIIDA 2011  Service Repair Manual OVERHEATING CAUSE ANALYSISCO-33
< SERVICE INFORMATION > [MR18DE]
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Except cool-
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parts mal-
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Overload on engine Abusive driving
High engine rpm und](/manual-img/5/57396/w960_57396-1032.png)
OVERHEATING CAUSE ANALYSISCO-33
< SERVICE INFORMATION > [MR18DE]
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Except cool-
ing system 
parts mal-
function —
Overload on engine Abusive driving
High engine rpm under no 
load
Driving in low gear for ex-
tended time
Driving at extremely high 
speed
Power train system mal-
function
—
Installed improper size 
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air 
flow Blocked bumper
Installed front bumper fas-
cia cover
—
Blocked  radiator  grille Mud contamination or paper 
clogging
Blocked radiator Blocked air flow
Blocked condenser
Installed large fog lamp
Symptom
Check items
Revision: May 2010 2011 Versa 

EC-12
Description .............................................................889
On Board Diagnosis Logic  .....................................889
DTC Confirmation Procedure  ................................889
Diagnosis Procedure  .............................................889
DTC P0507 ISC SYSTEM  ................................891
Description ........................................................... ..891
On Board Diagnosis Logic  .....................................891
DTC Confirmation Procedure  ................................891
Diagnosis Procedure  .............................................891
DTC P050A, P050B, P050E COLD START 
CONTROL ........................................................
893
Description ........................................................... ..893
On Board Diagnosis Logic  .....................................893
DTC Confirmation Procedure  ................................893
Diagnosis Procedure  .............................................894
DTC P0605 ECM ..............................................895
Component Description  ....................................... ..895
On Board Diagnosis Logic  .....................................895
DTC Confirmation Procedure  ................................895
Diagnosis Procedure  .............................................896
DTC P0607 ECM ..............................................897
Description ........................................................... ..897
On Board Diagnosis Logic  .....................................897
DTC Confirmation Procedure  ................................897
Diagnosis Procedure  .............................................897
DTC P0643 SENSOR POWER SUPPLY  ........898
On Board Diagnosis Logic  ................................... ..898
DTC Confirmation Procedure  ................................898
Wiring Diagram  ......................................................899
Diagnosis Procedure  .............................................900
DTC P0850 PNP SWITCH  ...............................903
Component Description  ....................................... ..903
CONSULT-III Reference Value in Data Monitor 
Mode .................................................................... ..
903
On Board Diagnosis Logic  .....................................903
DTC Confirmation Procedure  ................................903
Overall Function Check  .........................................904
Wiring Diagram  ......................................................905
Diagnosis Procedure  .............................................906
DTC P1148 CLOSED LOOP CONTROL .........909
On Board Diagnosis Logic  ................................... ..909
DTC P1211 TCS CONTROL UNIT  ..................910
Description ........................................................... ..910
On Board Diagnosis Logic  .....................................910
DTC Confirmation Procedure  ................................910
Diagnosis Procedure  .............................................910
DTC P1212 TCS COMMUNICATION LINE  .....911
Description ........................................................... ..911
On Board Diagnosis Logic  .....................................911
DTC Confirmation Procedure  ................................911
Diagnosis Procedure  .............................................911
DTC P1217 ENGINE OVER TEMPERATURE ..912
System Description  .............................................. .912
CONSULT-III Reference Value in Data Monitor 
Mode .................................................................... .
913
On Board Diagnosis Logic  ....................................913
Overall Function Check .........................................913
Wiring Diagram  .....................................................915
Diagnosis Procedure .............................................916
Main 13 Causes of Overheating  ...........................919
Component Inspection  ..........................................920
DTC P1225 TP SENSOR ..................................921
Component Description  ....................................... .921
On Board Diagnosis Logic  ....................................921
DTC Confirmation Procedure ................................921
Diagnosis Procedure .............................................921
Removal and Installation .......................................922
DTC P1226 TP SENSOR ................................ ..923
Component Description  ....................................... .923
On Board Diagnosis Logic  ....................................923
DTC Confirmation Procedure ................................923
Diagnosis Procedure .............................................923
Removal and Installation .......................................924
DTC P1564 ASCD STEERING SWITCH ........ ..925
Component Description  ....................................... .925
CONSULT-III Reference Value in Data Monitor 
Mode .................................................................... .
925
On Board Diagnosis Logic  ....................................925
DTC Confirmation Procedure ................................926
Wiring Diagram  .....................................................927
Diagnosis Procedure .............................................928
Component Inspection  ..........................................930
DTC P1572 ASCD BRAKE SWITCH  ...............931
Component Description  ....................................... .931
CONSULT-III Reference Value in Data Monitor 
Mode .................................................................... .
931
On Board Diagnosis Logic  ....................................931
DTC Confirmation Procedure ................................932
Wiring Diagram  .....................................................933
Diagnosis Procedure .............................................934
Component Inspection  ..........................................938
DTC P1574 ASCD VEHICLE SPEED SEN-
SOR ..................................................................
940
Component Description  ....................................... .940
On Board Diagnosis Logic  ....................................940
DTC Confirmation Procedure ................................940
Diagnosis Procedure .............................................940
DTC P1715 INPUT SPEED SENSOR  ..............942
A/T .......................................................................... .942
A/T : Description  ...................................................942
A/T : CONSULT-III Reference Value in Data Mon-
itor Mode  ...............................................................
942
A/T : On Board Diagnosis Logic ............................942
A/T : Diagnosis Procedure  ....................................942
Revision: May 2010 2011 Versa