IQDISPLAYMODULE(IQDM)ANDIQDM-P
DIAGNOSTICS:IQSYSTEMFaultsMenu
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FaultRecovery
Whenafaultisdetectedbythespeedcontroller,thespeedcontrollerwillattempttorecoverfromthefaultandresume
normaloperation.Inthecaseofanintermittentproblemsuchasaloosewiringconnection,thecontrollermaybeable
torecoverandoperatenormallyforawhile,buttheproblemshouldberepairedbeforeplacingthevehicleinservice.
Dependingonthetypeoffault,thecontrollerwillattempttorecoverimmediatelyaftertheconditionclearsorafterthe
acceleratorpedalhasbeencycled(releasedandpressedagain).
CONTROLLERFAULTCONTROLLERATTEMPTSTORECOVER
HWFAILSAFEWhenkeyswitchiscycled
KEYSWITCHSROWhenkeyswitchiscycled
THROTTLEFAULT1Whenconditionclears
SPEEDSENSORWhenconditionclears
MAINWELDEDWhenconditionclears
MAINDRIVERONWhenconditionclears
MAINDRIVEROFFWhenaccel.pedaliscycled
HIGHSPEEDWALKAWAY
WhenTow/Runswitchiscycledoracharge
cycleiscompleted
MAINCOILFAULTWhenaccel.pedaliscycled
FIELDMISSINGWhenaccel.pedaliscycled
HPDWhenaccel.pedaliscycled
PROC/WIRINGWhenconditionclears
OVERVOLTAGEWhenconditionclears
LOWBATTERYVOLTAGEWhenconditionclears
THERMALCUTBACKWhenconditionclears
MOTORSTALLWhenconditionclears
MAINDROPOUTWhenaccel.pedaliscycled
OPENARMATUREWhenconditionclearsandaccel.pedaliscycled
MAXPASSWORDTRIESWhenTow/Runswitchiscycled
INCORRECTPASSWORDWhenTow/Runswitchiscycled
ThefollowingfaultscanbedetectedbytheIQSystemcontroller:
HWFAILSAFE
ThearmaturedriveFET’s(eldeffecttransistors)regulatethearmaturecurrent.Ifthespeedcontrollerdetectsafailure
ofthearmaturedriveFET’sorcircuitry,ahardwarefailsafefaultisdetected.
KEYSWITCHSRO(STATICRETURNTOOFF)
Thecontrollerdetectsakeyswitchsrofaultandthevehiclewillbedisabledwhenthecontrollerispoweredupwiththe
keyswitchonandafteranyofthefollowingeventshaveoccured:1.therun/towswitchhadbeenplacedinthetow
position,2.theDCplugofthechargerhadbeenpluggedintothevehicle,3.thebatterysethadbeendisconnectedor4.
2009ElectricPrecedentMaintenanceandServiceManualPage13-9