ELECTRICVEHICLE-TROUBLESHOOTING
ANDELECTRICALSYSTEMTroubleshooting
12
TROUBLESHOOTINGGUIDE1
SYMPTOMPOSSIBLECAUSESCORRECTIVEACTION
Looseordisconnectedmotorspeedsensor
orbrokenwire
Repairand/orconnectthethree-pinconnector
tothemotorspeedsensor
Looseordisconnected16-pinconnectorat
speedcontrollerorbrokenwire
Repairand/orconnectthe16-pinconnector
tothespeedcontroller
MonitorMenu–SPEEDPULSESmenuitem
indicatesthatspeedpulsesareOFFwhen
thevehicleisinmotionorDiagnosticMenu–
SPEEDSENSORfaultcode
Failedmotorspeedsensor
TestProcedure12–MotorSpeedSensoron
page12-25
Looseordisconnectedtwo-pinconnectorat
theMCORorbrokenwire
Repairand/orconnectthetwo-pinconnector
totheMCOR
Looseordisconnected16-pinconnectorat
speedcontrollerorbrokenwire
Repairand/orconnectthe16-pinconnector
tothespeedcontroller
MonitorMenu–FOOTINPUTmenuitem
indicatesthattheMCORinternallimitswitchis
alwaysONoralwaysOFF .
FailedMCOR
TestProcedure5–KeySwitchandMCOR
LimitSwitchCircuitonpage12-17
LooseordisconnectedForward/Reverse
rockerswitch(quickdisconnectterminals)or
brokenwire
Repairand/orconnectthequickdisconnect
terminalstotheForward/Reverseswitch
LooseordisconnectedForward/Reverse
rockerswitch(three-pinconnector)orbroken
wire
Repairand/orconnectthethree-pinconnector
fromtheForward/Reverseswitchtothewire
harness
Looseordisconnected16-pinconnectorat
speedcontrollerorbrokenwire
Repairand/orconnectthe16-pinconnector
tothespeedcontroller
MonitorMenu–FORWARDINPUTand/or
REVERSEINPUTdoesnotindicatethe
correctreading
FailedForward/Reverserockerswitch
TestProcedure6–Forward/ReverseRocker
Switchonpage12-18
Speedcontrollerlogicmalfunction
Disconnectthebatteriesandallowthe
speedcontrollercapacitorstodischarge.
SeeWARNING“Toavoidunintentionally
starting...”inGeneralWarningsonpage
1-2.Reconnectthebatteriesandseeifthe
symptomreturns.
Loose,broken,ordisconnectedwire(s)at
solenoidorB+speedcontrollerterminal
Repairand/orconnectthelooseor
disconnectedwire(s)
Looseordisconnected16-pinconnectorat
speedcontrollerorbrokenwire
Repairand/orconnectthe16-pinconnector
tothespeedcontroller
MonitorMenu–MAINCONTDRIVER
(solenoid)doesnotindicateONwhenthe
solenoidshouldbeactivated.orDiagnostic
Menu–MAINCONTDNC(maincontactorin
solenoiddidnotclose)faultcode
Failedsolenoid
Replacesolenoid.SeeSolenoidRemovalon
page13-13.
Looseordisconnectedwiresatkeyswitch
terminalsorbrokenwire
Repairand/orconnectthequickdisconnect
terminalstotheForward/Reverseswitch
Looseordisconnected16-pinconnectorat
speedcontrollerorbrokenwire
Repairand/orconnectthe16-pinconnector
tothespeedcontroller
MonitorMenu–KEYINPUTdoesnotindicate
ONwhenkeyswitchisintheONposition
Failedkeyswitch
TestProcedure5–KeySwitchandMCOR
LimitSwitchCircuitonpage12-17
TABLECONTINUEDONNEXTPAGE
2020Precedent,Villager2and4MaintenanceandServiceManualPage12-7