WHEELLOADERWA430-6E0
SERIALNUMBERSH60266andup
©2012KomatsuHanomagGmbH
WHEELLOADER
Compositionofshopmanual1
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Note1:Alwayskeepthelatestversionofthismanualinaccordancewiththislistandutilizeaccordingly.
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•Fileoverviewandothermaterialsinsectionsintheordershownbelowandutilizethemaccordingly.
SectionTitleFormNumber
ShopManual,contentsbinder,binderlabelandtabsSEN00823-13
00IndexandforewordSEN00824-13
IndexSEN00832-13
ForewordandgeneralinformationSEN00833-04
01SpecificationSEN00825-02
SpecificationandtechnicaldataSEN00834-02
10Structure,functionandmaintenancestandardSEN00826-03
EngineandcoolingsystemSEN01363-01
PowertrainSEN01364-03
SteeringsystemSEN01365-02
BrakesystemSEN01366-02
UndercarriageandframeSEN01367-02
Hydraulicsystem,Part1SEN01368-03
Hydraulicsystem,Part2SEN01369-01
WorkequipmentSEN01370-01
CabanditsattachmentsSEN01371-02
Electricalsystem,Part1SEN01372-02
Electricalsystem,Part2SEN01373-02
Electricalsystem,Part3SEN01374-03
Centrallubricationsystem(CLS)CLS10-01
20StandardvaluetableSEN01599-03
StandardservicevaluetableSEN01599-03
30TestingandadjustingSEN00828-06
Testingandadjusting,Part1SEN01600-04
Testingandadjusting,Part2SEN01601-05
Testingandadjusting,Part3SEN01602-06
40TroubleshootingSEN00829-05
FailurecodetableandfuselocationsSEN01736-05
GeneralinformationontroubleshootingSEN01737-03
Troubleshootingbyfailurecode(Displayofcode),Part1SEN01738-04
Troubleshootingbyfailurecode(Displayofcode),Part2SEN01739-04
Troubleshootingbyfailurecode(Displayofcode),Part3SEN01740-05
Troubleshootingbyfailurecode(Displayofcode),Part4SEN01741-02
Troubleshootingbyfailurecode(Displayofcode),Part5SEN01742-03
Troubleshootingbyfailurecode(Displayofcode),Part6SEN01743-03
Troubleshootingbyfailurecode(Displayofcode),Part7SEN01744-02
Troubleshootingbyfailurecode(Displayofcode),Part8SEN01745-02
Troubleshootingbyfailurecode(Displayofcode),Part9SEN01746-01
Troubleshootingbyfailurecode(Displayofcode),Part10SEN01747-02
Troubleshootingofelectricalsystem(E-mode)SEN01748-04
Troubleshootingofhydraulicandmechanicalsystem(H-mode)SEN01749-04
Troubleshootingofengine(S-mode)SEN01750-02
TroubleshootingofCentralLubricationSystem(CLS)CLS40-01
50DisassemblyandassemblySEN00830-03
GeneralinformationondisassemblyandassemblySEN02191-02
EngineandcoolingsystemSEN02192-03
Powertrain,Part1SEN02193-03
Powertrain,Part2SEN02194-03
SteeringsystemSEN02195-01
BrakesystemSEN02196-02
UndercarriageandframeSEN02197-02
HydraulicsystemSEN02198-02
WorkequipmentSEN02199-03
CabanditsattachmentsSEN02200-02
ElectricalsystemSEN02201-01
90DiagramsanddrawingsSEN00831-04
HydraulicdiagramsanddrawingsSEN00835-02
ElectricaldiagramsanddrawingsSEN00836-03
ConnectorlistSEN00836-03
Joysticksteeringleverlinkage.................................................................................................42
Brakepipingdiagram...............................................................................................................2
Stabilizervalve.........................................................................................................................10
WorkequipmentSEN01370-01
20Standardvaluetable
StandardservicevaluetableSEN01599-03
30Testingandadjusting
Testingandadjusting,Part1SEN01600-04
Releasingresidualpressureinfuelsystem.............................................................................23
Testingfuelpressure................................................................................................................24
Testingfuelreturnandleakamount.........................................................................................30
Checkofmufflerandmufflerstackforloosenessanddamage...............................................36
Checkofmufflerfunction.........................................................................................................36
Checkofinstalledconditionofcylinderheadandmanifolds...................................................37
Checkofenginepipingfordamageandlooseness.................................................................37
Testingandadjustingairconditionercompressorbelttension................................................38
Replacingalternatorbelt..........................................................................................................39
Adjustingtransmissionspeedsensor......................................................................................40
Adjustingdirectionalleverlength.............................................................................................41
Adjustinggearshiftleverlength...............................................................................................41
Testingdirectionallever...........................................................................................................42
Testingandadjustingpowertrainoilpressure.........................................................................43
Procedureforflushingtorqueconverterandtransmissionhydrauliccircuit............................57
Methodofmovingmachinewhentransmissionvalveisbroken..............................................58
Checkingaxlefinaldriveforoilleakage..................................................................................60
Checkingdriveshaftsforlooseness,playanddamage..........................................................60
Testingandadjustingsteeringstopvalve................................................................................61
Testingandadjustingsteeringwheel.......................................................................................63
Testingandadjustingsteeringoilpressure..............................................................................65
Bleedingairfromsteeringcircuit.............................................................................................68
Testingandadjusting,Part2SEN01601-05
Testinghydraulicdrivefan.......................................................................................................3
Bleedingairfromhydraulicdrivefancircuit.............................................................................5
Testingbrakepedal..................................................................................................................7
Testingandadjustingbrakepedallinkage...............................................................................8
Testingbrakeperformance......................................................................................................9
Testingandadjustingaccumulatorchargepressure...............................................................10
Testingwheelbrakeoilpressure.............................................................................................11
Testingwearofwheelbrakedisc.............................................................................................13
Bleedingairfromwheelbrakecircuit.......................................................................................14
Releasingresidualpressureinbrakeaccumulatorcircuit.......................................................15
Testingparkingbrakeperformance.........................................................................................16
Testingparkingbrakeoilpressure...........................................................................................17
Testingwearofparkingbrakedisc..........................................................................................19
Methodofreleasingparkingbrakemanually...........................................................................20
Testingandadjustingworkequipmentcontrollever................................................................21
TestingandadjustingworkequipmentPPCoilpressure........................................................22
Testingandadjustingworkequipmentoilpressure.................................................................25
Bleedingairfromworkequipmentcircuit.................................................................................29
Releasingresidualpressureinworkequipmentcircuit...........................................................30
ProcedurefortestingofnitrogengaspressureandchargingofnitrogengasofECSS (ElectronicallyControlledSuspensionSystem)accumulator.............................31
Testingandadjustingbucketpositioner...................................................................................37
Testingandadjustingboomkick-out.......................................................................................39
Checkingproximityswitchoperationpilotlamp.......................................................................40
Procedurefortestingdiodes....................................................................................................41
Preparationworkfortroubleshootingforelectricalsystem......................................................42
StartingKOMTRAXterminaloperations..................................................................................47
IndicatorlampsofKOMTRAXterminal....................................................................................52
Testingandadjusting,Part3SEN01602-06
Adjustingreplaced,reassembledoraddedsensor,controller,etc.withmachinemonitor......2
Specialfunctionsofmachinemonitor(EMMS)........................................................................5 Pm-clinicinspectiontable........................................................................................................73
40Troubleshooting
FailurecodetableandfuselocationsSEN01736-05
Failurecodetable....................................................................................................................2
Fuselocations.........................................................................................................................13
GeneralinformationontroubleshootingSEN01737-03
Pointstorememberwhentroubleshooting..............................................................................2
Sequenceofeventsintroubleshooting...................................................................................3
Testingbeforetroubleshooting................................................................................................4
Classificationandproceduresoftroubleshooting....................................................................5
Informationcontainedintroubleshootingtable........................................................................8
Connectiontableforconnectorpinnumbers...........................................................................10 T-branchboxandT-branchadaptertable.............................................................................46
Troubleshootingbyfailurecode(Displayofcode),Part1SEN01738-04
Failurecode[1500L0](TORQFLOWtransmission:Doublemeshing)......................................3
Failurecode[15SAL1](ECMVFclutch:WhencommandcurrentisOFF,fillsignalisON).....4
Failurecode[15SALH](ECMVFclutch:WhencommandcurrentisON,fillsignalisOFF)....6
Failurecode[15SBL1](ECMVRclutch:WhencommandcurrentisOFF,fillsignalisON).....8
Failurecode[15SBLH](ECMVRclutch:WhencommandcurrentisON,fillsignalisOFF)....10
Failurecode[15SEL1](ECMV1stclutch:WhencommandcurrentisOFF,fillsignalisON)...12
Failurecode[15SELH](ECMV1stclutch:WhencommandcurrentisON,fillsignalisOFF)..14
Failurecode[15SFL1](ECMV2ndclutch:WhencommandcurrentisOFF,fillsignalisON)..16
Failurecode[15SFLH](ECMV2ndclutch:WhencommandcurrentisON,fillsignalisOFF).18
Failurecode[15SGL1](ECMV3rdclutch:WhencommandcurrentisOFF,fillsignalisON)..20
Failurecode[15SGLH](ECMV3rdclutch:WhencommandcurrentisON,fillsignalisOFF).22
Failurecode[15SHL1](ECMV4thclutch:WhencommandcurrentisOFF,fillsignalisON)..24
Failurecode[15SHLH](ECMV4thclutch:WhencommandcurrentisON,fillsignalisOFF).26
Failurecode[2F00MA](Parkingbrake:Malfunction)................................................................28
Failurecode[2G43ZG](Accumulator:Lowoilpressure)..........................................................30
Failurecode[44K0L4](Bucketpositioner:ON/OFFsignalsdisagree).....................................32
Troubleshootingbyfailurecode(Displayofcode),Part2SEN01739-04
Failurecode[AA1ANX](Aircleaner:Clogging).......................................................................4
Failurecode[AB00L6](Alternator:Signaldisagreeswithoperatingstateofengine)..............6
Failurecode[AB00MA](Alternator:Malfunction)....................................................................8
Failurecode[B@BAZG](Rotationderatingbylowengineoilpressure).................................10
Failurecode[B@BAZK](Engineoil:Lowlevel)......................................................................11
Failurecode[B@BCNS](Coolant:Overheating).....................................................................12
Failurecode[B@BCZK](Coolant:Lowlevel)..........................................................................14
Failurecode[B@BEBF](Waterinfuelerror)..........................................................................16
Failurecode[B@C7NS](Brakeoil:Overheating)...................................................................18
Failurecode[b@CENS](Torqueconverteroil:Overheating)..................................................20
Failurecode[B@CENS](Torqueconverteroil:Overheating).................................................22
Failurecode[B@HANS](Hydraulicoil:Overheating).............................................................24
Failurecode[CA111](Abnormalityinenginecontroller)..........................................................26
Failurecode[CA115](EngineNeorBkupspeedsensorerror)..............................................27
Failurecode[CA122](Chargepressuresensorhigherror).....................................................28
Failurecode[CA123](Chargepressuresensorlowerror)......................................................30
Failurecode[CA131](Throttlesensorhigherror)...................................................................32
Failurecode[CA132](Throttlesensorlowerror).....................................................................34
Failurecode[CA144](Coolantsensorhigherror)...................................................................36
Failurecode[CA145](Coolantsensorlowerror)....................................................................38
Failurecode[CA153](Chargetemperaturesensorhigherror)...............................................40
Failurecode[CA154](Chargetemperaturesensorlowerror).................................................42
Failurecode[CA155](Deratingofspeedbyabnormallyhighchargetemperature)................44
Failurecode[CA187](Sensorpowersupply2lowerror)........................................................46
Failurecode[CA221](Atmosphericpressuresensorhigherror)............................................48
Failurecode[CA222](Atmosphericsensorlowerror).............................................................50
Failurecode[CA227](Sensorpowersupply2higherror).......................................................52
Failurecode[CA234](Engineoverspeed)...............................................................................53
Failurecode[CA238](Nespeedsensorpowersupplyerror)..................................................54
Troubleshootingbyfailurecode(Displayofcode),Part3SEN01740-05
Failurecode[CA271](IMV/PCV1Shortcircuit).......................................................................3
Failurecode[CA272](IMV/PCV1Disconnection)...................................................................4
Failurecode[CA281]Highpressurepumperror.....................................................................6
Failurecode[CA322](Injector#1open/shorterror)................................................................8
Failurecode[CA323](Injector#5open/shorterror)................................................................10 Failurecode[CA324](Injector#3open/shorterror)................................................................12
Failurecode[CA325](Injector#6open/shorterror)................................................................14 Failurecode[CA331](Injector#2open/shorterror)................................................................16 Failurecode[CA332](Injector#4open/shorterror)................................................................18 Failurecode[CA342](Calibrationcodeinconsistency)...........................................................20 Failurecode[CA351](Injectorsdrivecircuiterror)..................................................................22 Failurecode[CA352](Sensorpowersupply1lowerror)........................................................24
Failurecode[CA386](Sensorpowersupply1higherror).......................................................26
Failurecode[CA428](Abnormallyhighlevelinwatersensor)................................................27
Failurecode[CA429](Abnormallylowlevelinwatersensor).................................................28
Failurecode[CA431](Idlevalidationswitcherror)..................................................................30
Failurecode[CA432](Idlevalidationactionerror)..................................................................32
Failurecode[CA435](Engineoilpressureswitcherror).........................................................34
Failurecode[CA441](Batteryvoltagelowerror).....................................................................35
Failurecode[CA442](Batteryvoltagehigherror)...................................................................38
Failurecode[CA449]Commonrailpressurehigherror2.......................................................40
Failurecode[CA451](Commonrailpressuresensorhigherror)............................................44
Failurecode[CA452](Commonrailpressuresensorlowerror).............................................46
Failurecode[CA488](Deratingoftorquebyabnormallyhighchargetemperature)...............48
Failurecode[CA553](Commonrailpressurehigherror1).....................................................49
Failurecode[CA559](Supplypumppressureverylowerror).................................................50
Failurecode[CA689](EngineNespeedsensorerror)............................................................52
Failurecode[CA731](EngineBkupspeedsensorphaseerror).............................................54
Failurecode[CA757](Allcontinuousdatalosterror)..............................................................55
Failurecode[CA778](EngineBkupspeedsensorerror)........................................................58
Failurecode[CA1633](KOMNETdatalinktimeouterror).......................................................60
Failurecode[CA2185](Throttlesensorpowersupplyvoltagehigherror)..............................62
Failurecode[CA2186](Throttlesensorpowersupplyvoltagelowerror)................................63
Troubleshootingbyfailurecode(Displayofcode),Part4SEN01741-02
Failurecode[CA2249](Supplypumppressureverylowerror2)............................................3
Failurecode[CA2265](Abnormallyhighlevelinelectricliftpump)........................................4
Failurecode[CA2266](Abnormallylowlevelinelectricliftpump)..........................................6
Failurecode[CA2311](AbnormalityinIMVsolenoid).............................................................8
Failurecode[CA2555](Intakeheaterrelaydisconnectionerror)............................................10
Failurecode[CA2556](Intakeheaterrelayshortcircuiterror)................................................12
Failurecode[D150KA](Emergencysteeringrelay:Disconnection)........................................14
Failurecode[D150KB](Emergencysteeringrelay:Shortcircuit)...........................................16
Failurecode[D150KY](Emergencysteeringrelay:Shortcircuitwithpowersupplyline).......18
Failurecode[D160KA](Backuplamprelay:Disconnection)...................................................20
Failurecode[D160KB](Backuplamprelay:Shortcircuit)......................................................22
Failurecode[D160KZ](Backuplamprelay:Disconnectionorshortcircuit)...........................24
Failurecode[D191KA](Joysticksteeringneutralsafetyrelay:Disconnection)......................26
Failurecode[D191KB](Joysticksteeringneutralsafetyrelay:Shortcircuit)..........................28
Failurecode[D191KY](Joysticksteeringneutralsafetyrelay: Shortcircuitwithpowersupplyline)...................................................................30
Failurecode[D192KA](ECSSsolenoid:Disconnection)........................................................32
Failurecode[D192KB](ECSSsolenoid:Shortcircuit)............................................................33
Failurecode[D192KY](ECSSsolenoid:Shortcircuitwithpowersupplyline)........................34
Failurecode[D193KA](Joysticksteeringsolenoidcutrelay:Disconnection).........................36
Failurecode[D193KB](Joysticksteeringsolenoidcutrelay:Shortcircuit)............................38
Failurecode[D193KY](Joysticksteeringsolenoidcutrelay: Shortcircuitwithpowersupplyline)...................................................................40
Failurecode[D5ZHKA](TerminalCsignal:Disconnection)....................................................43
Failurecode[D5ZHKB](TerminalCsignal:Shortcircuit)........................................................47
Failurecode[D5ZHKZ](TerminalCsignal:Disconnectionorshortcircuit).............................50
Failurecode[D5ZHL6](TerminalCsignal:
Signaldoesnotmatchenginerunningorstoppedstate)...................................55
Failurecode[DA80L4](Autogreasecontroller:ON/OFFsignalsdisagree)............................58
Failurecode[DAF3KK](Machinemonitor:Lowsourcevoltage(input)...................................60
Failurecode[DAF5KP](Machinemonitor:Lowoutputvoltage)..............................................62
Failurecode[DAFRKR](CANcommunicationwithmachinemonitor: Defectivecommunication(Abnormalityintargetcomponentsystem)...............66
Troubleshootingbyfailurecode(Displayofcode),Part5SEN01742-03
Failurecode[DAQ0KK](Transmissioncontroller:Lowsourcevoltage)..................................4
Failurecode[DAQ0KT](Transmissioncontroller:Abnormalityincontroller)..........................6
Failurecode[DAQ1KA](TerminalACCinput:Disconnection)................................................7
Failurecode[DAQ2KK](Transmissioncontrollerloadpowersupplyline: Lowsourcevoltage(input).................................................................................10
Failurecode[DAQ9KQ](Transmissioncontrollermodelselection: Disagreementofmodelselectionsignals).........................................................12
Failurecode[DAQRKR](CANcommunicationwithtransmissioncontroller: Defectivecommunication(Abnormalityintargetcomponentsystem)...............13
Failurecode[DAQRMA](Transmissioncontrolleroptionsetting: Disagreementofoptionselection).....................................................................16
Failurecode[DB2RKR](CANcommunicationwithenginecontroller: Defectivecommunication(Abnormalityintargetcomponentsystem)...............18
Failurecode[DB90KK]Workequipmentcontroller:Lowsourcevoltage(input).....................20
Failurecode[DB90KT]Workequipmentcontroller:Abnormalityincontroller.........................22
Failurecode[DB92KK]Workequipmentcontrollerloadpowersupplyline: Lowsourcevoltage(input).................................................................................24
Failurecode[DB95KX]Workequipmentcontrollerpowersupplyoutput: Outofinputsignalrange....................................................................................26
Failurecode[DB99KQ](Workequipmentcontrollermodelselection: Disagreementinmodelselectionsignals)..........................................................29
Failurecode[DB9RKR]CANcommunicationwithworkequipmentcontroller: Defectivecommunication(Abnormalityintargetcomponentsystem)...............30
Failurecode[DB9RMA](Workequipmentcontrolleroptionsetting:Malfunction)...................32
Failurecode[DB9RMC](CANcommunicationwithtransmissioncontroller, enginecontrollerandmachinemonitor:Defectiveoperation)............................33
Failurecode[DD15LD]tswitch(Panelswitch1):Switchiskeptpressedforlongtime........36
Failurecode[DD16LD]Uswitch(Panelswitch2):Switchiskeptpressedforlongtime.......38
Failurecode[DD17LD]<switch(Panelswitch3):Switchiskeptpressedforlongtime.........40
Failurecode[DD18LD]>switch(Panelswitch4):Switchiskeptpressedforlongtime.........42
Failurecode[DD1ALD]Remotepositionerraise/lowersetswitch(raise):
Switchiskeptpressedforlongtime...................................................................44
Failurecode[DD1BLD]Remotepositionerraise/lowersetswitch(lower):
Switchiskeptpressedforlongtime...................................................................46
Failurecode[DD1CLD]Loadmetersubtotalswitch:Switchiskeptpressedforlongtime.....48
Failurecode[DD1FLD]Loadmetermodeselectorswitch(A/B):
Switchiskeptpressedforlongtime...................................................................50
Failurecode[DD1GLD]Loadmetermodeselectorswitch(+/–):
Switchiskeptpressedforlongtime...................................................................52
Failurecode[DD1HLD](Loadmeterdisplayselectorswitch:
Switchiskeptpressedforlongtime).................................................................54
Failurecode[DD1NLD](Fanreverseswitch:Switchiskeptpressedforlongtime)...............56
Failurecode[DD1NL4](Fanautomaticreverseswitch:
Switchiskeptpressedforlongtime).................................................................58
Failurecode[DDB6L4](Parkingbrakeswitch(Neutralizer):ON/OFFsignalsdisagree)........60
Failurecode[DDD1LD](Remotepositionerbucketanglesetswitch:
Switchiskeptpressedforlongtime).................................................................64
Troubleshootingbyfailurecode(Displayofcode),Part6SEN01743-03
Failurecode[DDE5MA](Emergencysteeringdriveswitch:Malfunction)...............................4
Failurecode[DDK3KA](RightFNRswitch:Disconnection)....................................................6
Failurecode[DDK4KA](JoysticksteeringFNRswitch:Disconnection)..................................9
Failurecode[DDK5L4](Joysticksteeringshift-up/downswitch: ON/OFFsignalsdisagree).................................................................................12
Failurecode[DDK6KA](FNRleverswitch:Disconnection)....................................................14
Failurecode[DDK6KB](FNRleverswitch:Shortcircuit)........................................................18
Failurecode[DDS5KA](Steeringpressureswitch:Disconnected).........................................20
Failurecode[DDS5KB](Steeringpressureswitch:Short-circuit)............................................22
Failurecode[DDS5L6](Steering:Lowoilpressure)................................................................24
Failurecode[DDT0L4](Shiftmodeselectorswitch:ON/OFFsignalsdisagree).....................26
Failurecode[DDT4LD](Transmissioncut-offsetswitch: Switchiskeptpressedforlongtime).................................................................28
Failurecode[DDW9LD](Kick-downswitch:Switchiskeptpressedforlongtime).................30
Failurecode[DDWLLD](Holdswitch:Switchiskeptpressedforlongtime)..........................32
Failurecode[DDY0LD](Loadmetercancelswitch:Switchiskeptpressedforlongtime).....34
Failurecode[DF10KA](Transmissionshiftleverswitch:Disconnected).................................36
Failurecode[DF10KB](Transmissionshiftleverswitch:Shortcircuit)...................................40
Failurecode[DGF1KA](Transmissionoiltemperaturesensor:Disconnected)......................42
Failurecode[DGF1KB](Transmissionoiltemperaturesensor:Shortcircuit).........................44
Failurecode[DGH2KX](Hydraulicoiltemperaturesensor:Outofinputsignalrange)...........46
Failurecode[DGR2KA](Rearbrakeoiltemperaturesensor:Disconnected).........................48
Failurecode[DGR2KX](Rearbrakeoiltemperaturesensor:Outofinputsignalrange)........50
Failurecode[DGT1KX](Torqueconverteroiltemperaturesensor: Outofinputsignalrange)...................................................................................52
Troubleshootingbyfailurecode(Displayofcode),Part7SEN01744-02
Failurecode[DH21KA](Loaderpumppressuresensor:Disconnection)................................4
Failurecode[DH21KB](Loaderpumppressuresensor:Powersupplylineshort).................6
Failurecode[DHPCKX](Liftarmcylinderbottompressuresensor: Outofinputsignalrange)...................................................................................8
Failurecode[DHPDKX](Liftarmcylinderheadpressuresensor:Outofinputsignalrange).10
Failurecode[DHT1KX](Transmissioncut-offpressuresensor:Outofinputsignalrange)....12
Failurecode[DHT8KA](Steeringpumppressuresensor:Disconnection)..............................14
Failurecode[DHT8KB](Steeringpumppressuresensor:Shortcircuit).................................16
Failurecode[DK59KA](LiftarmEPCleverpotentiometer(Main):Disconnection).................18
Failurecode[DK59KY](LiftarmEPCleverpotentiometer(Main): Shortcircuitwithpowersupplyline)...................................................................21
Failurecode[DK59L8](LiftarmEPCleverpotentiometer(Main):Analogsignalsdisagree)..24
Failurecode[DK5AKA](LiftarmEPCleverpotentiometer(Sub):Disconnection)..................27
Failurecode[DK5AKY](LiftarmEPCleverpotentiometer(Sub): Shortcircuitwithpowersupplyline)...................................................................30
Failurecode[DK5BKA](BucketEPCleverpotentiometer(Main):Disconnection).................33
Failurecode[DK5BKY](BucketEPCleverpotentiometer(Main): Shortcircuitwithpowersupplyline)...................................................................36
Failurecode[DK5BL8](BucketEPCleverpotentiometer(Main):Analogsignalsdisagree)..39
Failurecode[DK5CKA](BucketEPCleverpotentiometer(Sub):Disconnection)..................42
Failurecode[DK5CKY](BucketEPCleverpotentiometer(Sub): Shortcircuitwithpowersupplyline)...................................................................45
Troubleshootingbyfailurecode(Displayofcode),Part8SEN01745-02
Failurecode[DK5FKA](JoysticksteeringEPCleverpotentiometer(Main): Disconnection)...................................................................................................3
Failurecode[DK5FKY](JoysticksteeringEPCleverpotentiometer(Main): Shortcircuitwithpowersupplyline)...................................................................6
Failurecode[DK5GKA](JoysticksteeringEPCleverpotentiometer(Sub):Disconnection)...8
Failurecode[DK5GKY](JoysticksteeringEPCleverpotentiometer(Sub): Shortcircuitwithpowersupplyline)...................................................................12
Failurecode[DK5FL8](JoysticksteeringEPCleverpotentiometer(Main): Analogsignalsdisagree)....................................................................................14
Failurecode[DKA0KA](Liftarmanglesensor:Disconnection)..............................................18
Failurecode[DKA0KY](Liftarmanglesensor:Shortcircuitwithpowersupplyline)..............20
Failurecode[DKA0L0](Liftarmanglesensor:Doublemeshing)...........................................22
Failurecode[DLT3KA](Transmissionoutputshaftspeedsensor:Disconnection).................24
Failurecode[DLT3LC](Transmissionoutputshaftspeedsensor: Outofinputsignalrange)...................................................................................26
Failurecode[DT20KB](Transmissioncut-offindicatorlamp:Shortcircuit)............................28
Failurecode[DUM1KB](Remotepositionerraisesetindicatorlamp:Shortcircuit)...............30
Failurecode[DUM2KB](Remotepositionerlowersetindicatorlamp:Shortcircuit)..............32
Failurecode[DV00KB](Alarmbuzzer:Shortcircuit)..............................................................34
Failurecode[DW4PKA](LiftarmraiseEPCsolenoid:Disconnection)...................................36
Failurecode[DW4PKB](LiftarmraiseEPCsolenoid:Shortcircuit).......................................38
Failurecode[DW4PKY](LiftarmraiseEPCsolenoid:Shortcircuitwithpowersupplyline)...40
Failurecode[DW4QKA](LiftarmlowerEPCsolenoid:Disconnection)..................................42
Failurecode[DW4QKB](LiftarmlowerEPCsolenoid:Shortcircuit)......................................43
Failurecode[DW4QKY](LiftarmlowerEPCsolenoid: Shortcircuitwithpowersupplyline)...................................................................44
Failurecode[DW4RKA](BuckettiltEPCsolenoid:Disconnection)........................................46
Failurecode[DW4RKB](BuckettiltEPCsolenoid:Shortcircuit)............................................47
Failurecode[DW4RKY](BuckettiltEPCsolenoid:Shortcircuitwithpowersupplyline).......48
Troubleshootingbyfailurecode(Displayofcode),Part9SEN01746-01
Failurecode[DW4SKA](BucketdumpEPCsolenoid:Disconnection)...................................3
Failurecode[DW4SKB](BucketdumpEPCsolenoid:Shortcircuit)......................................4
Failurecode[DW4SKY](BucketdumpEPCsolenoid: Shortcircuitwithpowersupplyline)...................................................................6
Failurecode[DW7BKA](Fanreversesolenoid:Disconnection).............................................8
Failurecode[DW7BKB](Fanreversesolenoid:Shortcircuit).................................................9
Failurecode[DW7BKY](Fanreversesolenoid:Shortcircuitwithpowersupplyline)............10
Failurecode[DW7DKA](Hydraulicdrivefanneutralsolenoid:Disconnection)......................11
Failurecode[DW7DKB](Hydraulicdrivefanneutralsolenoid:Shortcircuit)..........................12
Failurecode[DW7DKY](Hydraulicdrivefanneutralsolenoid: Shortcircuitwithpowersupplyline)...................................................................13
Failurecode[DWM1KA](Workequipmentneutrallocksolenoid:Disconnection)..................14
Failurecode[DWM1KB](Workequipmentneutrallocksolenoid:Shortcircuit)......................16
Failurecode[DWM1KY](Workequipmentneutrallocksolenoid: Shortcircuitwithpowersupplyline)...................................................................18
Failurecode[DWN6KA](Liftarmraisemagnetdetentsolenoid:Disconnection)...................20
Failurecode[DWN6KB](Liftarmraisemagnetdetentsolenoid:Shortcircuit).......................22
Failurecode[DWN6KY](Liftarmraisemagnetdetentsolenoid: Shortcircuitwithpowersupplyline)...................................................................24
Failurecode[DWN7KA](Liftarmfloatmagnetdetentsolenoid:Disconnection)....................26
Failurecode[DWN7KB](Liftarmfloatmagnetdetentsolenoid:Shortcircuit)........................28
Failurecode[DWN7KY](Liftarmfloatmagnetdetentsolenoid: Shortcircuitwithpowersupplyline)...................................................................30
Failurecode[DWN8KA](Buckettiltmagnetdetentsolenoid:Disconnection).........................32
Failurecode[DWN8KB](Buckettiltmagnetdetentsolenoid:Shortcircuit)............................34
Failurecode[DWN8KY](Buckettiltmagnetdetentsolenoid: Shortedwiththepowersource).........................................................................36
Failurecode[DX16KA](FanpumpEPCsolenoid:Disconnection).........................................38
Failurecode[DX16KB](FanpumpEPCsolenoid:Shortcircuit).............................................39
Failurecode[DX16KY](FanpumpEPCsolenoid:Shortcircuitwithpowersupplyline).........40
Failurecode[DXH1KA](LockupECMVsolenoid:Disconnection)..........................................42
Failurecode[DXH1KB](LockupECMVsolenoid:Shortcircuit)..............................................44
Failurecode[DXH1KY](LockupECMVsolenoid:Shortcircuitwithpowersupplyline)..........46
Failurecode[DXH4KA](1stclutchECMVsolenoid:Disconnection).......................................48
Failurecode[DXH4KB](1stclutchECMVsolenoid:Shortcircuit)..........................................50
Failurecode[DXH4KY](1stclutchECMVsolenoid:Shortcircuitwithpowersupplyline)......52
Troubleshootingbyfailurecode(Displayofcode),Part10SEN01747-02
Failurecode[DXH5KA](2ndclutchECMVsolenoid:Disconnection).....................................4
Failurecode[DXH5KB](2ndclutchECMVsolenoid:Shortcircuit).........................................6
Failurecode[DXH5KY](2ndclutchECMVsolenoid:Shortcircuitwithpowersupplyline).....8
Failurecode[DXH6KA](3rdclutchECMVsolenoid:Disconnection)......................................10
Failurecode[DXH6KB](3rdclutchECMVsolenoid:Shortcircuit)..........................................12
Failurecode[DXH6KY](3rdclutchECMVsolenoid:Shortcircuitwithpowersupplyline)......14
Failurecode[DXH7KA](RclutchECMVsolenoid:Disconnection).........................................16
Failurecode[DXH7KB](RclutchECMVsolenoid:Shortcircuit)............................................18
Failurecode[DXH7KY](RclutchECMVsolenoid:Shortcircuitwithpowersupplyline)........20
Failurecode[DXH8KA](FclutchECMVsolenoid:Disconnection).........................................22
Failurecode[DXH8KB](FclutchECMVsolenoid:Shortcircuit).............................................24
Failurecode[DXH8KY](FclutchECMVsolenoid:Shortcircuitwithpowersupplyline).........26
Failurecode[DXHHKA](4thclutchECMVsolenoid:Disconnection)......................................28
Failurecode[DXHHKB](4thclutchECMVsolenoid:Shortcircuit).........................................30
Failurecode[DXHHKY](4thclutchECMVsolenoid:Shortcircuitwithpowersupplyline).....32
Failurecode[DXHLKA](JoysticksteeringrightEPCsolenoid:Disconnection)......................34
Failurecode[DXHLKB](JoysticksteeringrightEPCsolenoid:Shortcircuit)..........................36
Failurecode[DXHLKY](JoysticksteeringrightEPCsolenoid: Shortcircuitwithpowersupplyline)...................................................................38
Failurecode[DXHMKA](JoysticksteeringleftEPCsolenoid:Disconnection).......................40
Failurecode[DXHMKB](JoysticksteeringleftEPCsolenoid:Shortcircuit)...........................42
Failurecode[DXHMKY](JoysticksteeringleftEPCsolenoid: Shortcircuitwithpowersupplyline)...................................................................44
Failurecode[DY30MA]Motor-drivenemergencysteeringpumpfailure (Duringoperationofmachine)............................................................................46
Failurecode[DY30MC]Motor-drivenemergencysteeringpumpfailure (Malfunctioninmanualmode)............................................................................49
Failurecode[DY30ME]Emergencysteering:Operatingformorethan1minute....................52
Troubleshootingofelectricalsystem(E-mode)SEN01748-04
Installingpositionsoffuses......................................................................................................3
Informationintroubleshootingtable........................................................................................6
E-1Enginedoesnotstart........................................................................................................8
E-2Wiperdoesnotoperate.....................................................................................................14
E-3Windshieldwasherdoesnotoperate................................................................................18
E-4Headlamp,clearancelamp,taillamp,andlicenselampdonotlightuporgooff.............21
E-5Workinglampdoesnotlightuporgooff...........................................................................29
E-6Turnsignallampandhazardlampdonotlightuporgooff..............................................34
E-7Brakelampdoesnotlightoritkeepslightingup..............................................................40
E-8Backuplampdoesnotlightoritkeepslightingup............................................................42
E-9Backupbuzzerdoesnotsoundoritkeepssounding.......................................................44
E-10Horndoesnotsoundoritkeepssounding.....................................................................46
E-11Alarmbuzzerdoesnotsoundoritkeepssounding........................................................48
E-12Airconditionerdoesnotoperateorstop.........................................................................50
E-13TheKOMTRAXsystemdoesnotworkproperly.............................................................53
E-14Whenkick-downswitchisturnedON,kick-downoperationdoesnotstart.....................56
E-15Whenholdswitchispressed,holdingoperationdoesnotstart......................................58
E-16Transmissioniskeptinneutral,orbrakedrags whendirectionalleverisoperatedwhileparkingbrakeisapplied.......................60
E-17Transmissioncut-offmodecannotbesetorreset..........................................................62
E-18Transmissioncut-offsetcannotbereset........................................................................64
E-19FNRswitchmodecannotbesetorreset........................................................................66
E-20Fanreversefunctioncannotbeusedorreset................................................................68
E-21Dischargefromloaderpumpdoesnotrisefromminimumlevel.....................................70
E-22ECSSfunctioncannotbeusedorreset..........................................................................72
E-23WhenparkingbrakeisturnedON,parkingbrakeindicatorlampdoesnotlightup........74
E-24Whenemergencybrakeoperates,brakeoilpressurecautionlampdoesnotoperate...78
E-25Aircleanercloggingindicatorlampdoesnotlightup......................................................80
E-26Radiatorcoolantlevelcautionlampdoesnotlightup.....................................................82
E-27Hydraulicoiltemperaturegaugedoesnotriseand hydraulicoiltemperaturecautionlampdoesnotlightup....................................83
E-28Torqueconverteroiltemperaturegaugedoesnotriseand torqueconverteroiltemperaturecautionlampdoesnotlightup........................84
E-29Steeringoilpressurecautionlampdoesnotlightup......................................................86
E-30Abnormalityintswitch(panelswitch1)input...............................................................88
E-31AbnormalityinUswitch(panelswitch2)input..............................................................90
E-32Abnormalityin<switch(panelswitch3)input................................................................92
E-33Abnormalityin>switch(panelswitch4)input................................................................94
E-34Airconditionerdoesnotoperate.....................................................................................96
E-35Airisnotcooled..............................................................................................................100
E-36Noaircomesoutorairflowisabnormal.........................................................................104
E-37Temperaturecannotbecontrolled..................................................................................110
E-38Spurtingoutmodecannotbeswitched...........................................................................114
E-39Recirc/Freshcannotbechangedover............................................................................118
Troubleshootingofhydraulicandmechanicalsystem(H-mode)SEN01749-04 Methodofusingtroubleshootingchart....................................................................................3
Tableoffailuremodesandcauses..........................................................................................6
H-1Themachinedoesnotstart..............................................................................................10
H-2Torqueconverterlockupisnotswitchedoff(enginestalls) [Machinewithlockupclutch(ifequipped)]...........................................................12
H-3Torqueconverterlockupisnotswitchedon[Machinewithlockupclutch(ifequipped)]...13
H-4Thetravelspeedisslow,thethrustingforceisweak, theuphilltravelingpowerisweak,andthegearisnotshifted............................14
H-5Shocksarelargeatthetimesofstartingandshiftinggear...............................................16
H-6Timelagislargeatthetimesofstartingandshiftinggear................................................18
H-7Thetorqueconverteroiltemperatureishigh....................................................................20
H-8Steeringdoesnotturn.......................................................................................................21