丰田雅力士发动机1NZFE冷却系统修理手册英文版可编辑.docx
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丰田雅力士发动机1NZFE冷却系统修理手册英文版可编辑
丰田雅力士发动机1NZ-FE冷却系统修理手册（英文版）（可编辑）
丰田雅力士发动机1NZ-FE冷却系统修理手册（英文版）
CO–1
1NZ-FECOOLING–COOLINGSYSTEM
COOLINGSYSTEM
ON-VEHICLEINSPECTION
CAUTION
Besurethattheignitionisoffifyouworknearthe
electriccoolingfansorradiatorgrilleWiththe
ignition
ontheelectriccoolingfansmayautomaticallystartto
runiftheenginecoolanttemperatureishighandorthe
airconditioningison
1CHECKCOOLINGSYSTEMFORLEAKAGE
CAUTION
Toavoidthedangerofbeingburneddonotremove
theradiatorcapsub-assemblywhiletheengineand
radiatorassemblyarestillhotThermalexpansion
willcausehotenginecoolantandsteamtoblowout
fromtheradiatorassembly
aFilltheradiatorassemblywithenginecoolant
then
attacharadiatorcaptester
bPumpthetesterto137kPa14kgfcm2199psi
thencheckthatthepressuredoesnotdrop
IfthepressuredropscheckthehosesradiatorCO
assemblyandwaterpumpassemblyforleakageIf
therearenosignsortracesofexternalengine
coolantleakagechecktheheatercorecylinder
blockandhead
A106594
2INSPECTRESERVOIRTANKENGINECOOLANT
LEVEL
aTheenginecoolantshouldbebetweentheLOW
andFULLlineswhentheengineiscold
HINT
IfitisbelowtheLOWlinecheckforleakageand
addToyotaSuperLongLifeCoolantorsimilarhigh
qualityethyleneglycolbasednon-silicatenon-
aminenon-nitriteandnon-boratecoolantwithlong-
lifehybridorganicacidtechnologyuptotheFULL
line
3INSPECTENGINECOOLANTQUALITY
aRemovetheradiatorcapsub-assembly
CAUTION
Toavoidthedangerofbeingburneddonot
removetheradiatorcapsub-assemblywhilethe
engineandradiatorassemblyarestillhot
Thermalexpansionwillcausehotengine
coolantandsteamtoblowoutfromtheradiator
assembly
bCheckforexcessivedepositsofrustorscale
around
theradiatorcapsub-assemblyandradiator
filler
holeTheenginecoolantshouldbefreeofoil
Ifexcessivelydirtyreplacetheenginecoolant
cReinstalltheradiatorcapsub-assembly
CO–2
1NZ-FECOOLING–COOLINGSYSTEM
4INSPECTFINSFORBLOCKAGE
aIfthefinsarecloggedwashthemwithwaterora
steamcleaneranddrythemwithcompressedair
NOTICE
Toavoiddamagingthefinstheinjection
directionshouldbeatrightanglestothecore
surface
Ifthesteamcleaneristooclosetothecore
thereisapossibilityofdamagingthefinsso
A073603E02
keeptothefollowinginjectiondistances
InjectionPressureInjectionDistance
2mmin
kPakgfcmpsi
2942to4903
30011811
30to50427to711
4903to7845
50019685
50to80711to1138
Ifthefinsarebentstraightenthemwitha
screwdriverorpliers
Donotexposeelectroniccomponentsto
water
CO
CO–3
1NZ-FECOOLING–
COOLINGFANSYSTEM
ENGINE1NZ-FECOOLING
COOLINGFANSYSTEM
PARTSLOCATION
INTEGRATIONRELAY
COOLINGFANRELAY
COOLINGFANRELAYNO2
ENGINEROOMRBJB
-COOLINGFANRELAYNO2
CO
-INTEGRATIONRELAY
COOLINGFANRELAY
ECM
-RDIFUSE
-AM2FUSE
ENGINECOOLANTTEMPERATURE
ECTSENSOR
RADIATORFANWITHMOTOR
COOLINGFANRESISTOR
A108452E02
CO–4
1NZ-FECOOLING–
COOLINGFANSYSTEM
MAINBODYECU
-ECU-IGFUSE
-AM1FUSE
-IG1Relay
CO
A117368E03
CO–5
1NZ-FECOOLING–COOLINGFANSYSTEM
SYSTEMDIAGRAM
ECM
EngineCoolantTemperatureECTSensor
THW
Integration
CoolingFan
ETHW
FAN
RadiatorFanwithMotor
CoolingFanNo2
CO
FAN2
RADECU-IG
CoolingFanResistor
AM1
IG1IgnitionSwitch
ALT
Battery
A117350E01
CO–6
1NZ-FECOOLING–
COOLINGFANSYSTEM
ON-VEHICLEINSPECTION
CAUTION
Besurethattheignitionisoffifyouworknearthe
electriccoolingfansorradiatorgrilleWiththeignition
ontheelectriccoolingfansmayautomaticallystartto
runiftheenginecoolanttemperatureishighandorthe
airconditioningison
1INSPECTCOOLINGFANOPERATIONATLOW
TEMPERATURESBelow83?
C181?
F
aTurntheignitionswitchonIGandairconditioning
switchoff
bCheckthatthecoolingfanstops
Ifnotcheckthecoolingfanrelayandengine
coolanttemperaturesensorandcheckwhether
thereisdisconnectionoranopencircuitbetween
them
cDisconnecttheenginecoolanttemperaturesensor
connector
dCheckthatthecoolingfanrotates
IfnotcheckthefusescoolingfanrelayECMand
COcoolingfanandcheckforashortcircuitbetween
thecooingfanrelayandtheenginecoolant
temperaturesensor
eReconnecttheenginecoolanttemperaturesensor
connector
2INSPECTCOOLINGFANOPERATIONATHIGH
TEMPERATURESAbove93?
C199?
F
aStarttheengineandairconditioningswitchoffand
raisetheenginecoolanttemperaturetoabove93?
C
199?
F
HINT
Enginecoolanttemperatureisdetectedbythe
enginecoolanttemperaturesensoronthewater
outlet
b
Checkthatthecoolingfanrotates
Ifnotreplacetheenginecoolanttemperature
sensor
3INSPECTCOOLINGFANMOTOR
aDisconnectthecoolingfanmotorconnector
bConnectthecoolingfanconnectortothebattery
andcheckthatthefanmotormovessmoothly
CO–7
1NZ-FECOOLING–COOLINGFANSYSTEM
cUsinganammetermeasurethecurrentbetween
theterminals
StandardCurrent
wAC118to148Aat12V
woAC79to109Aat12V
dConnectthecoolingfanmotorconnector
A108453
CO
CO–8
1NZ-FECOOLING–
COOLANT
COOLANT
REPLACEMENT
CAUTION
Besurethattheignitionisoffifyouworknearthe
electriccoolingfansorradiatorgrilleWiththeignition
ontheelectriccoolingfansmayautomaticallystartto
runiftheenginecoolanttemperatureishighandorthe
airconditioningison
1DRAINENGINECOOLANT
NOTICE
Toavoidthedangerofbeingburneddonotremove
theradiatorcapsub-assemblywhiletheengineand
radiatorassemblyarestillhotThermalexpansion
willcausehotenginecoolantandsteamtoblowout
fromtheradiatorassembly
aLoosentheradiatordraincockplug
b
Removetheradiatorcapsub-assembly
cLoosenthecylinderblockdraincockplugthen
drainthecoolant
CO
CylinderBlockDrainCock
RadiatorCapSub-Assembly
RadiatorDrainCockPlug
A106596E01
2ADD
ENGINECOOLANT
aTightenalltheplugs
CO–9
1NZ-FECOOLING–
COOLANT
bPourenginecoolantintotheradiatorassemblyuntil
itoverflows
Capacity
MT48liters51USqts45lmpqts
AT47
liters50USqts44lmpqts
NOTICE
Donotsubstitutewaterforenginecoolant
HINT
Useofimproperenginecoolantmaydamagethe
enginecoolantsystem
UseonlyToyotaSuperLongLifeCoolantor
similarhighqualityethyleneglycolbasednon-
silicate
non-aminenon-nitriteandnon-borate
enginecoolantwithlong-lifehybridorganicacid
technologycoolantwithlong-lifehybridorganic
acidtechnologyconsistsofacombinationoflow
phosphatesandorganicacids
cChecktheenginecoolantlevelinsidetheradiator
assemblybysqueezingtheinletandoutletradiator
hosesseveraltimesbyhandIftheenginecoolant
levelgoesdownaddenginecoolant
dInstalltheradiatorcapsub-assemblysecurelyCO
eSlowlypourenginecoolantintotheradiator
reservoiruntilitreachestheFULLline
fWarmuptheengineuntilthecoolingfanoperates
1Settheairconditioningasfollowswhile
warminguptheengine
ItemManualairconditioningsystemAutomaticairconditioningsystem
Fanspeed-Anysettingexcept"OFF"
Fanspeed-Anysettingexcept"OFF"
Temperature-Tothehighesttemperature
SetcontrolasfollowsTemperature-TowardWARM
Airconditioningswitch"OFF"
Airconditioningswitch"OFF"
"AUTO"switch"OFF"
2Maintaintheenginespeedat2000to2500
rpmandwarmuptheengineuntilthecooling
fanoperates
gStoptheengineandwaituntilthecoolantcools
down
hIftheenginecoolantlevelisbelowthefulllevel
performstepsbthroughgagainandrepeatthe
operation
untiltheenginecoolantlevelstaysatthe
fulllevel
iRechecktheenginecoolantlevelinsidetheradiator
reservoirtankassemblyIfitisbelowthefulllevel
addenginecoolant
3CHECKFORENGINECOOLANTLEAKAGESee
pageCO-1
CO–10
1NZ-FECOOLING–WATERPUMP
ENGINE1NZ-FECOOLING
WATERPUMP
COMPONENTS
CO
ENGINEUNDERCOVERRH
505144inlbf
NmkgfcmftlbfSpecifiedtorque
A115143E01
CO–11
1NZ-FECOOLING–WATERPUMP
CO
1918914
5455140
FANANDGENERATORVBELT
NmkgfcmftlbfSpecifiedtorque
A116199E01
CO–12
1NZ-FE
COOLING–WATERPUMP
forHatchback
1111281
FAN
BELTADJUSTINGBAR
1918914
5455140
5253038
GENERATORx2
ASSEMBLY
4545933x3
9810072
CO
ENGINEMOUNTINGINSULATOR
SUB-ASSEMBLYRH
5253038
NmkgfcmftlbfSpecifiedtorque
A116193E06
CO–13
1NZ-FECOOLING–WATERPUMP
forSedan
1111281
1918914FANBELTADJUSTINGBAR
5455140
5253038
GENERATORx2
ASSEMBLY
5253038x3
9810072
CO
ENGINE
MOUNTINGINSULATOR
5253038
SUB-ASSEMBLYRH
NmkgfcmftlbfSpecifiedtorque
A133594E01
CO–14
1NZ-FECOOLING–WATERPUMP
CO
GASKET
1111281
x2
x3
x3WATERPUMPASSEMBLY
15153111111281
WATERPUMPPULLEY
NmkgfcmftlbfSpecifiedtorque
Non-reusablepart
A116194E01
CO–15
1NZ-FECOOLING–WATERPUMP
REMOVAL
1DISCONNECTCABLEFROMNEGATIVEBATTERY
TERMINAL
2REMOVEENGINECOOLANTSeepageCO-8
3REMOVEENGINEUNDERCOVERRH
4REMOVEFANANDGENERATORVBELTSeepage
EM-7
5REMOVEGENERATORASSEMBLYSeepageCH-10
6REMOVEENGINEMOUNTINGINSULATORSUB-
ASSEMBLYRHSeepageLU-17
7REMOVEWATERPUMPPULLEY
aUsingSSTholdthewaterpumppulley
SST09960-1001009962-0100009963-00700
bRe
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