overheating NISSAN LATIO 2010 Service Repair Manual

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:0000000005397213
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-17, "
Removal and Installation" (HR16DE engine models), CO-
41, "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: January 20102010 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 Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
3
Precaution for Liquid Gasket .....................................4
PREPARATION ............................................6
PREPARATION .............................................. .....6
Special Service Tool ........................................... ......6
Commercial Service Tool ..........................................6
SYMPTOM DIAGNOSIS ...............................8
OVERHEATING CAUSE ANALYSIS ............. .....8
Troubleshooting Chart ...............................................8
FUNCTION DIAGNOSIS .. ............................10
DESCRIPTION ............................................... ....10
Engine Cooling System ....................................... ....10
Engine Cooling System Schematic .........................11
ON-VEHICLE MAINTENANCE ....................12
ENGINE COOLANT ....................................... ....12
Inspection ............................................................ ....12
Changing Engine Coolant .......................................12
RADIATOR .........................................................15
Checking Radiator Cap ....................................... ....15
Checking Radiator ...................................................15
ON-VEHICLE REPAIR .................................17
RADIATOR ..................................................... ....17
Component .......................................................... ....17
Removal and Installation ..................................... ....17
COOLING FAN ..................................................19
Component (Models with A/C) .................................19
Component (Models without A/C) ............................19
Removal and Installation .........................................20
Disassembly and Assembly .....................................20
WATER PUMP ..................................................21
Exploded View .........................................................21
Removal and Installation .........................................21
Inspection ................................................................22
THERMOSTAT ..................................................23
Exploded View .........................................................23
Removal and Installation .........................................23
Inspection ................................................................24
WATER OUTLET ..............................................25
Exploded View .........................................................25
Removal and Installation .........................................25
Inspection ................................................................26
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... ...
27
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
27
Periodical Maintenance Specification .................. ....27
Radiator ...................................................................27
Thermostat ..............................................................27
MR18DE
SERVICE INFORMATION .. .........................
28
PRECAUTIONS .................................................28
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
28
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ...................................
28
Precaution for Liquid Gasket ...................................29
Revision: January 20102010 Versa

CO-2
PREPARATION .............................................. ...31
Special Service Tool ............................................ ...31
Commercial Service Tool .......................................31
OVERHEATING CAUSE ANALYSIS ................33
Troubleshooting Chart ......................................... ...33
COOLING SYSTEM ...........................................35
Cooling Circuit ..................................................... ...35
ENGINE COOLANT ...........................................36
Inspection ............................................................ ...36
Changing Engine Coolant .......................................36
RADIATOR ........................................................39
Checking Radiator Cap ....................................... ...39
Checking Radiator ..................................................39
Component .............................................................40
Removal and Installation ........................................41
COOLING FAN ..................................................42
Component (Models with A/C) ................................42
Component (Models without A/C) ........................ ...42
Removal and Installation .........................................43
Disassembly and Assembly ................................. ...43
WATER PUMP ...................................................44
Component .......................................................... ...44
Removal and Installation .........................................44
THERMOSTAT ............................................... ...46
Component .......................................................... ...46
Removal and Installation .........................................46
WATER OUTLET AND WATER CONTROL
VALVE ............................................................ ...
48
Component .......................................................... ...48
Removal and Installation .........................................48
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ...
51
Standard and Limit ............................................... ...51
Revision: January 20102010 Versa

CO-8
< SYMPTOM DIAGNOSIS >[HR16DE]
OVERHEATING CAUSE ANALYSIS
SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000005398180
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 leaksCooling hose
Loose clamp
Cracked hose
Water pump Poor sealing
Reservoir tank 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: January 20102010 Versa

OVERHEATING CAUSE ANALYSISCO-9
< SYMPTOM DIAGNOSIS > [HR16DE]
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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: January 20102010 Versa

OVERHEATING CAUSE ANALYSISCO-33
< SERVICE INFORMATION > [MR18DE]
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OVERHEATING CAUSE ANALYSIS
Troubleshooting ChartINFOID:0000000005398210
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 leaks Cooling hose
Loose clamp
Cracked hose
Water pump Poor sealing
Radiator 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: January 20102010 Versa

CO-34
< SERVICE INFORMATION >[MR18DE]
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: January 20102010 Versa

EC-12
DTC P0605 ECM ..............................................893
Component Description ....................................... ..893
On Board Diagnosis Logic .....................................893
DTC Confirmation Procedure ................................893
Diagnosis Procedure .............................................894
DTC P0607 ECM ..............................................895
Description ........................................................... ..895
On Board Diagnosis Logic .....................................895
DTC Confirmation Procedure ................................895
Diagnosis Procedure .............................................895
DTC P0643 SENSOR POWER SUPPLY ........896
On Board Diagnosis Logic ................................... ..896
DTC Confirmation Procedure ................................896
Wiring Diagram ......................................................897
Diagnosis Procedure .............................................898
DTC P0850 PNP SWITCH ...............................901
Component Description ....................................... ..901
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
901
On Board Diagnosis Logic .....................................901
DTC Confirmation Procedure ................................901
Overall Function Check .........................................902
Wiring Diagram ......................................................903
Diagnosis Procedure .............................................904
DTC P1148 CLOSED LOOP CONTROL .........907
On Board Diagnosis Logic ................................... ..907
DTC P1211 TCS CONTROL UNIT ..................908
Description ........................................................... ..908
On Board Diagnosis Logic .....................................908
DTC Confirmation Procedure ................................908
Diagnosis Procedure .............................................908
DTC P1212 TCS COMMUNICATION LINE .....909
Description ........................................................... ..909
On Board Diagnosis Logic .....................................909
DTC Confirmation Procedure ................................909
Diagnosis Procedure .............................................909
DTC P1217 ENGINE OVER TEMPERATURE .910
System Description .............................................. ..910
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
911
On Board Diagnosis Logic .....................................911
Overall Function Check .........................................911
Wiring Diagram ......................................................913
Diagnosis Procedure .............................................914
Main 13 Causes of Overheating ............................917
Component Inspection ...........................................918
DTC P1225 TP SENSOR .................................919
Component Description ....................................... ..919
On Board Diagnosis Logic .....................................919
DTC Confirmation Procedure ................................919
Diagnosis Procedure .............................................919
Removal and Installation .......................................920
DTC P1226 TP SENSOR ..................................921
Component Description ....................................... .921
On Board Diagnosis Logic ....................................921
DTC Confirmation Procedure ................................921
Diagnosis Procedure .............................................921
Removal and Installation .......................................922
DTC P1421 COLD START CONTROL .......... ..923
Description ........................................................... .923
On Board Diagnosis Logic ....................................923
DTC Confirmation Procedure ................................923
Diagnosis Procedure .............................................923
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
CVT ......................................................................... .942
CVT : Description ..................................................942
CVT : CONSULT-III Reference Value in Data
Monitor Mode ....................................................... .
942
CVT : On Board Diagnosis Logic ..........................943
CVT : DTC Confirmation Procedure .....................943
CVT : Diagnosis Procedure ..................................943
DTC P1805 BRAKE SWITCH ..........................944
Description ........................................................... .944
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... .
944
Revision: January 20102010 Versa

P0300, P0301, P0302, P0303, P0304 MISFIRE
EC-247
< COMPONENT DIAGNOSIS > [HR16DE]
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P0300, P0301, P0302, P0303, P0304 MISFIRE
DTC LogicINFOID:0000000005398417
DTC DETECTION LOGIC
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates
enough to cause the crank-
shaft position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is occurring.
The misfire detection logic consists of the following two conditions.
1. One Trip Detection Logic (Three Way Catalyst Damage)
On the 1st trip, when a misfire condition occurs that can damage the three way catalyst (TWC) due to
overheating, the MIL will blink.
When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions
for a change.
When the misfire condition decreases to a level t hat will not damage the TWC, the MIL will turn off.
If another misfire condition occurs that can damage the TWC on a second trip, the MIL will blink.
When the misfire condition decreases to a level t hat will not damage the TWC, the MIL will remain on.
If another misfire condition occurs that can damage the TWC, the MIL will begin to blink again.
2. Two Trip Detection Logic (Exhaust quality deterioration) For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MIL will only
light when the misfire is detected on a second trip. Du ring this condition, the ECM monitors the CKP sen-
sor signal every 1,000 engine revolutions.
A misfire malfunction can be detected on any one cylinder or on multiple cylinders.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Restart engine and let it idle for about 15 minutes.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-248, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-II
1. Turn ignition switch OFF and wait at least 10 seconds.
Sensor Input signal to ECM ECM function
Crankshaft position sensor (POS) Engine speedOn board diagnosis of misfire
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0300 Multiple cylinder misfire detected Multiple cylinders misfire. • Improper spark plug • Insufficient compression
• Incorrect fuel pressure
• The fuel injector circuit is open or shorted
• Fuel injector
• Intake air leak
• The ignition signal circuit is open or shorted
• Lack of fuel
• Signal plate
• A/F sensor 1
• Incorrect PCV hose connection
P0301 No.1 cylinder misfire detected No. 1 cylinder misfires.
P0302 No. 2 cylinder misfire detected No. 2 cylinder misfires.
P0303 No. 3 cylinder misfire detected No. 3 cylinder misfires.
P0304 No. 4 cylinder misfire detected No. 4 cylinder misfires.
Revision: January 20102010 Versa

DTC P0300 - P0304 MULTIPLE CYLINDER MISFIRE, NO. 1 - 4 CYLINDER MIS-
FIRE
EC-783
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DTC P0300 - P0304 MULTIPLE CYLINDER
MISFIRE, NO. 1 - 4 CYLINDER
MISFIRE
On Board Diagnosis LogicINFOID:0000000005532627
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crank-
shaft position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is occurring.
The misfire detection logic consists of the following two conditions.
1. One Trip Detection Logic (Three Way Catalyst Damage) On the 1st trip, when a misfire condition occurs that can damage the three way catalyst (TWC) due to
overheating, the MIL will blink.
When a misfire condition occurs, the ECM monitors the CKP sensor (POS) signal every 200 engine revo-
lutions for a change.
When the misfire condition decreases to a level t hat will not damage the TWC, the MIL will turn off.
If another misfire condition occurs that can damage the TWC on a second trip, the MIL will blink.
When the misfire condition decreases to a level t hat will not damage the TWC, the MIL will remain on.
If another misfire condition occurs that can damage the TWC, the MIL will begin to blink again.
2. Two Trip Detection Logic (Exhaust quality deterioration) For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MIL will only
light when the misfire is detected on a second trip. Du ring this condition, the ECM monitors the CKP sen-
sor signal every 1,000 engine revolutions.
A misfire malfunction can be detected on any one cylinder or on multiple cylinders.
DTC Confirmation ProcedureINFOID:0000000005532628
CAUTION:
Always drive vehicle in safe manner according to traf fic conditions and obey all traffic laws when driv-
ing.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Restart engine and let it idle for about 15 minutes.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to EC-784, "
Diagnosis Procedure".
NOTE:
If 1st trip DTC is not detected during above proc edure, performing the following procedure is advised.
a. Turn ignition switch OFF and wait at least 10 seconds.
b. Start engine and drive the vehicle under the similar conditi ons to (1st trip) Freeze Frame Data for a certain
time. Refer to table below.
Sensor Input Signal to ECM ECM function
Crankshaft position sensor (POS) Engine speedOn board diagnosis of misfire
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0300
0300 Multiple cylinder misfire
detected
Multiple cylinder misfire.
• Improper spark plug
• Insufficient compression
• Incorrect fuel pressure
• Fuel injector circuit is open or shorted
• Fuel injector
• Intake air leak
• The ignition signal circuit is open or shorted
• Lack of fuel
• Drive plate or flywheel
• Air fuel ratio (A/F) sensor 1
• Incorrect PCV hose connection
P0301
0301
No.1 cylinder misfire de-
tected
No. 1 cylinder misfires.
P0302
0302 No. 2 cylinder misfire
detected
No. 2 cylinder misfires.
P0303
0303 No. 3 cylinder misfire
detected
No. 3 cylinder misfires.
P0304
0304 No. 4 cylinder misfire
detected
No. 4 cylinder misfires.
Revision: January 20102010 Versa