豐田雅力士發(fā)動機1NZ-FE冷卻系統(tǒng)修理手冊(英文版)(可編輯)

1、豐田雅力士發(fā)動機1NZ-FE冷卻系統(tǒng)修理手冊（英文版）（可編輯）豐田雅力士發(fā)動機1NZ-FE冷卻系統(tǒng)修理手冊（英文版）CO - 11NZ-FE COOLING - COOLING SYSTEMCOOLING SYSTEMON-VEHICLE INSPECTIONCAUTIONBe sure that the ignition is off if you work near theelectric cooling fans or radiator grille With the ignitionon the electric cooling fans may automatically star

2、t to runif the engine coolant temperature is high andor the airconditioning is on1 CHECK COOLING SYSTEM FOR LEAKAGECAUTIONTo avoid the danger of being burned do not remove theradiator cap sub-assembly while the engine and radiatorassembly are still hot Thermal expansion will cause hotengine coolant

3、and steam to blow out from the radiatorassemblya Fill the radiator assembly with engine coolant thenattach a radiator cap testerTo avoid the danger of being burned do notb Pump the tester to 137 kPa 14 kgfcm2 199 psi then checkthat the pressure does not dropIf the pressure drops check the hoses radi

4、ator CO assemblyand water pump assembly for leakage If there are no signsor traces of external engine coolant leakage check theheater core cylinder block and headA1065942 INSPECT RESERVOIR TANK ENGINE COOLANTLEVELa The engine coolant should be between the LOWand FULL lines when the engine is coldHIN

5、TIf it is below the LOW line check for leakage and add ToyotaSuper Long Life Coolant or similar high quality ethyleneglycol based non-silicate nonamine non-nitrite andnon-borate coolant with longlife hybrid organic acidtechnology up to the FULL line3 INSPECT ENGINE COOLANT QUALITYa Remove the radiat

6、or cap sub-assemblyCAUTIONremove the radiator cap sub-assembly while theengine and radiator assembly are still hotThermal expansion will cause hot enginecoolant and steam to blow out from the radiator assemblyb Check for excessive deposits of rust or scale aroundthe radiator cap sub-assembly and rad

7、iatorfillerhole The engine coolant should be free of oilIf excessively dirty replace the engine coolantc Reinstall the radiator cap sub-assemblyCO-21NZ-FE COOLING - COOLING SYSTEM4 INSPECT FINS FOR BLOCKAGEa If the fins are clogged wash them with water or a steamcleaner and dry them with compressed

8、air NOTICETo avoid damaging the fins the injectiondirection should be at right angles to the core surfaceIf the steam cleaner is too close to the corethere is a possibility of damaging the fins soA073603E02COOLING FAN RELAYkeep to the following injection distancesInjection Pressure Injection Distanc

9、e2 mm inkPa kgfcm psi2942 to 4903300 1181130 to 50 427 to 7114903 to 7845500 1968550 to 80 711 to 1138If the fins are bent straighten them with ascrewdriver or pliersDo not expose electronic components towatercoCO-31NZ-FE COOLING -COOLING FAN SYSTEMENGINE1NZ-FE COOLINGCOOLING FAN SYSTEMPARTS LOCATIO

10、NINTEGRATION RELAYCOOLING FAN RELAYCOOLING FAN RELAY NO 21NZ-FE COOLING - COOLING FAN SYSTEMENGINE ROOM RB JB- COOLING FAN RELAY NO 2CO- INTEGRATION RELAYCOOLING FAN RELAYECM-RDI FUSE- AM2 FUSEENGINE COOLANT TEMPERATUREECT SENSORRADIATOR FAN WITH MOTORCOOLING FAN RESISTORA108452E02CO-41NZ-FE COOLING

11、 -COOLING FAN SYSTEMMAIN BODY ECU- ECU-IG FUSE-AMI FUSE-IG 1 RelayCOA117368E031NZ-FE COOLING - COOLING FAN SYSTEMCO-5SYSTEM DIAGRAMECMEngine Coolant Temperature ECT SensorTHWIntegrationCooling FanETHWFANRadiator Fan with MotorCooling Fan No 2coFAN2RAD ECU-IGCooling Fan ResistorAMIIG 1 Ignition Switc

12、hALTBatteryAU7350E01CO-61NZ-FE COOLING -COOLING FAN SYSTEMON-VEHICLE INSPECTIONCAUTION2 INSPECT COOLING FAN OPERATION AT HIGHBe sure that the ignition is off if you work near the electriccooling fans or radiator grille With the ignition on theelectric cooling fans may automatically start to run if t

13、heengine coolant temperature is high andor the air conditioningis on1 INSPECT COOLING FAN OPERATION AT LOWTEMPERATURES Below 83?C 181?Fa Turn the ignition switch on IG and air conditioning switchoffb Check that the cooling fan stopsIf not check the cooling fan relay and engine coolanttemperature sen

14、sor and check whether there is disconnectionor an open circuit between themc Disconnect the engine coolant temperature sensor connectord Check that the cooling fan rotatesIf not check the fuses cooling fan relay ECM andCO cooling fan and check for a short circuit betweenthe cooing fan relay and the

15、engine coolant temperature sensore Reconnect the engine coolant temperature sensor connectorTEMPERATURES Above 93?C 199?F a Start the engine and airconditioning switch off and raise the engine coolanttemperature to above 93?C 199?FHINTEngine coolant temperature is detected by thed Connect the coolin

16、g fan motor connectorengine coolant temperature sensor on the wateroutletbCheck that the cooling fan rotatesIf not replace the engine coolant temperaturesensor3 INSPECT COOLING FAN MOTORa Disconnect the cooling fan motor connectorb Connect the cooling fan connector to the batteryand check that the f

17、an motor moves smoothlyCO-71NZ-FE COOLING - COOLING FAN SYSTEMc Using an ammeter measure the current betweenthe terminalsStandard Currentw AC 118 to 148 A at 12 Vwo AC 79 to 109 A at 12 VA108453COCO-81NZ-FE COOLING -COOLANTCOOLANTREPLACEMENTCAUTIONBe sure that the ignition is off if you work near th

18、e electriccooling fans or radiator grille With the ignition on theelectric cooling fans may automatically start to run if theengine coolant temperature is high andor the air conditioningis on1 DRAIN ENGINE COOLANTNOTICETo avoid the danger of being burned do not remove the radiatorcap sub-assembly wh

19、ile the engine and radiator assembly arestill hot Thermal expansion will cause hot engine coolant andsteam to blow out from the radiator assemblya Loosen the radiator drain cock plugbRemove the radiator cap subassembly c Loosen the cylinderblock drain cock plug thenUse only Toyota Super Long Life Co

20、olant ordrain the coolantcoCylinder Block Drain CockRadiator Cap Sub-AssemblyRadiator Drain Cock PlugA106596E012 ADDENGINE COOLANTa Tighten all the plugsCO-91NZ-FE COOLING -COOLANTb Pour engine coolant into the radiator assembly untilit overflowsCapacityMT 48 liters 51 USqts 45 Imp qtsAT 47liters 50

21、 USqts 44 Imp qtsNOTICEDo not substitute water for engine coolantHINTUse of improper engine coolant may damage theUse only Toyota Super Long Life Coolant orengine coolant systemsimilar high quality ethylene glycol based nonsilicatenon-amine non-nitrite and non-borateengine coolant with long-life hyb

22、rid organic acidtechnology coolant with long-life hybrid organicacid technology consists of a combination of lowphosphates and organic acidsc Check the engine coolant level inside the radiatorassembly by squeezing the inlet and outlet radiatorhoses several times by hand If the engine coolantlevel go

23、es down add engine coolantd Install the radiator cap sub-assembly securely COe Slowly pour engine coolant into the radiatorreservoir until it reaches the FULL linef Warm up the engine until the cooling fan operates1 Set the air conditioning as follows whilewarming up the engineItem Manual air condit

24、ioning system Automatic air conditioningsystemFan speed - Any setting except OFFFan speed - Any setting except OFFTemperature一To the highest temperatureSet control as follows Temperature一Toward WARMAir conditioning switch OFFAir conditioning switch OFFAUTO switch OFF2 Maintain the engine speed at 20

25、00 to 2500rpm and warm up the engine until the coolingfan operatesg Stop the engine and wait until the coolant cools downh If the engine coolant level is below the full level perform stepsb through g again and repeat the operationuntil the engine coolant level stays at thefull leveli Recheck the eng

26、ine coolant level inside the radiator reservoirtank assembly If it is below the full level add engine coolant3 CHECK FOR ENGINE COOLANT LEAKAGE Seepage COTco -101NZ-FE COOLING - WATER PUMPENGINE1NZ-FE COOLINGWATER PUMPCOMPONENTSCOENGINE UNDER COVER RH50 51 44 inlbfNm kgfcm ftlbf Specified torqueA115

27、143E01CO - 111NZ-FE COOLING - WATER PUMPCO19 189 1454 551 40FAN AND GENERATOR V BELTNm kgfcm ftlbf Specified torqueA116199E01CO - 121NZ-FECOOLING - WATER PUMPfor Hatchback11 112 81FANBELT ADJUSTING BAR19 189 144 551 4052 530 38GENERATOR x2ASSEMBLY45 459 33 x35 REMOVE GENERATOR ASSEMBLY See page CH-1

28、0A133594E01CO - 141NZ-FE COOLING - WATER PUMPCOGASKET11 112 81x2x3x3WATER PUMP ASSEMBLY15 153 11 11 112 81WATER PUMP PULLEYNm kgfcm ftlbf Specified torqueNon-reusable partA116194E01CO - 151NZ-FE COOLING - WATER PUMPREMOVAL1 DISCONNECT CABLE FROM NEGATIVE BATTERYTERMINAL2 REMOVE ENGINE COOLANT See pa

29、ge CO-83 REMOVE ENGINE UNDER COVER RH4 REMOVE FAN AND GENERATOR V BELT See pageEM-7If necessary replace the water pump assembly6 REMOVE ENGINE MOUNTING INSULATOR SUB-ASSEMBLY RH See page LU-177 REMOVE WATER PUMP PULLEYa Using SST hold the water pump pulleySST 09960-10010 09962-01000 09963-00700b Rem

30、ove the 3 bolts and remove the water pump pulleySSTCOA116191E018 REMOVE WATER PUMP ASSEMBLYa Remove the 3 bolts and 2 nuts and remove the water pump assemblyand gasketA116192CO - 161NZ-FE COOLING -WATER PUMPINSPECTION1 INSPECT WATER PUMP ASSEMBLYa Visually check the drain hole for coolant leakage b

31、Turn thepulley and check that the water pump bearing moves smoothly anddoes not make any noiseTurnA037047E027 ADJUST FAN AND GENERATOR V BELT See pageINSTALLATION1 INSTALL WATER PUMP ASSEMBLYa Install the water pump assembly through a newgasket with the 3 bolts and 2 nutsTorque 11 Nm 112 kgfcm 81 ft

32、lbf2 INSTALL WATER PUMP PULLEYCO a Provisionally install the water pump pulley with the 3 boltsA116192b Using SST hold the water pump pulleySST 09960-10010 09962-01000 09963-00700c Tighten the 3 bolts to the specified torqueTorque 15 Nm 153 kgfcm 11 ftlbf3 INSTALL ENGINE MOUNTING INSULATOR SUB-ASSEM

33、BLY RH for Hatchback See page LU-264 INSTALL ENGINE MOUNTING INSULATOR SUB-ASSEMBLY RH for Sedan See page LU-26SSTA116191E01 5 INSTALL GENERATOR ASSEMBLY See page CH-176 INSTALL FAN AND GENERATOR V BELT See pageEM-7EM-78 INSPECTFAN AND GENERATOR V BELT See pageEM-89 CONNECT CABLE TO NEGATIVE BATTERY

34、TERMINALTorque 54 Nm 55 kgfcm 48 inlbf10 ADD ENGINE COOLANT See page CO-811 CHECK FOR ENGINE COOLANT LEAKAGE See page CO-112 INSTALL ENGINE UNDER COVER RHCO - 171NZ-FE COOLING - THERMOSTATENGINE1NZ-FE COOLINGTHERMOSTATCOMPONENTSCOTHERMOSTATGASKET90 92 80 inlbfWATER INLET90 92 80 inlbfNm kgfcm ftlbf

35、Specified torqueNon-reusable partb Check the valve opening temperature of theA116190E01CO - 181NZ-FE COOLING-THERMOSTATREMOVAL1 DRAIN ENGINE COOLANT See page CO-82 REMOVE WATER INLETa Remove the 2 nuts and separate the water inlet withradiator hose from the cylinder blockA1161863 REMOVE THERMOSTATa

36、Remove the thermostat from the cylinder blockb Remove the gasket from the thermostatcoA116187INSPECTION1 INSPECT THERMOSTATHINTThe valve opening temperature is inscribed on thethermostatA116189a Immerse the thermostat in water and gradually heatb Check the valve opening temperature of thethe waterthermostatValve opening temperature80 to 84?C 176 to 183?FIf the valve opening temperature is not as specified replace thethermostatP000436E01CO - 191NZ-FE COOLING - THERMOSTATc Che