2011 NISSAN LATIO engine overheat

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

TROUBLE DIAGNOSISAT-75
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TCM Terminal and Reference ValueINFOID:0000000005928104
TCM HARNESS CONNECTOR TERMINAL LAYOUT
Terminals and Reference Values for TCM
Others Transaxle overheats.
ON vehicle
1. A/T fluid level
AT- 1 7
2. Engine idling speedEC-24

(HR16DE), EC-
578 (MR18DE)
3. Accelerator pedal position sensor EC-415

(HR16DE), EC-
982 (MR18DE)
4. Line pressure test AT- 5 1
5. Line pressure solenoid valveAT- 1 3 3
6. Control valve assemblyAT- 2 2 2
OFF vehicle7. Oil pump
AT- 2 7 8
8. Reverse clutchAT- 2 9 7
9. High clutchAT- 3 0 2
10. Brake bandAT- 3 3 1
11. Forward clutchAT- 3 0 7
12. Overrun clutchAT- 3 0 7
13. Low & reverse brakeAT- 3 1 4
14. Torque converterAT- 2 5 7
ATF shoots out during
operation.
White smoke emitted
from exhaust pipe
during operation.ON vehicle 1. A/T fluid level
AT- 1 7
OFF vehicle2. Reverse clutch
AT- 2 9 7
3. High clutchAT- 3 0 2
4. Brake bandAT- 3 3 1
5. Forward clutchAT- 3 0 7
6. Overrun clutchAT- 3 0 7
7. Low & reverse brakeAT- 3 1 4
Unusual smell at A/T
fluid charging pipe.ON vehicle 1. A/T fluid level
AT- 1 7
OFF vehicle2. Torque converter
AT- 2 5 7
3. Oil pumpAT- 2 7 8
4. Reverse clutchAT- 2 9 7
5. High clutchAT- 3 0 2
6. Brake bandAT- 3 3 1
7. Forward clutchAT- 3 0 7
8. Overrun clutchAT- 3 0 7
9. Low & reverse brakeAT- 3 1 4
ItemsSymptom Condition Diagnostic itemReference page
WCIA0717E
Revision: May 2010 2011 Versa

CO-1
ENGINE
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SECTION CO
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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

OVERHEATING CAUSE ANALYSISCO-7
< SYMPTOM DIAGNOSIS > [HR16DE]
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SYMPTOM DIAGNOSIS
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

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

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

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