ELECTRICVEHICLE-TROUBLESHOOTING
ANDELECTRICALSYSTEMTestProcedures
12
(Viewedfromdriversideofvehicle)
1.REDprobetobatteryno.1(+).
2.BLACKprobetobatteryno.6(-).
2500-30100-10411
Figure12-4BatteryDischargeTest
4.Turnthedischargemachineonandrecordthevoltagereadingofbatterypackwhileunderload.
5.Afullychargedsetofbatteriesingoodconditionshouldreadbetween46and49voltswhileunderload.
6.Areadingof32to46voltsindicatesdischargedorfailedbatteries.Eachbatteryshouldbecheckedwitha
multimeterwhileunderload.SeefollowingNOTE.
NOTE:Ifa48-voltsetofbatteriesisdowninthe32to38voltrange,thedischargemachinewillactivatebutitwill
thinkitistestinga36-voltbatteryset.
7.Areadingof31.5voltsorlesswillnotactivatedischargemachine.Ifthevoltageofthebatteriesisbelow32volts,
thebatteriesaredeeplydischargedorhavefailed.
8.Recordingthebatterypackvoltagereadingwhileunderloadprovidesamoreaccuratediagnosisofthecondition
ofthebatteries.WhenthedischargemachineisON,itplacesthebatterypackunderloadandmanytimes
canhelpdetermineifoneormorebatteriesinthesethavefailed.T estingbatteryvoltagewhilethebatteries
arenotunderloadwillnotalwaysindicatethetrueconditionofthebatteries.Formoreinformationaboutthe
batteries,refertoElectricVehicle-Batteriesonpage14-1.
TESTPROCEDURE3–Tow/RunSwitch
SeeGeneralWarningsonpage1-2.
NOTE:Thisisavoltagetest.
IfnovoltageiscomingtotheTow/RunSwitch,inspectthered-to-pinkwirespadeconnectionatthesolenoid.
Tow/RunSwitchTestwiththeCDTHandset
1.WiththeT ow/RunswitchintheRUNposition,connecttheCDTtothevehicle.
2.ImmediatelyaftertheCDTisconnectedtothevehicle,thescreenshoulddisplayacopyrightnoticeandthe
CDTmodelnumber.
3.IftheCDTdisplayscreenremainsblank,theCDTporthasfailed.Inthiscase,disconnecttheCDTfromthe
portandconnectitdirectlytothecontroller(Figure11-4,Page11-29).
2020Precedent,Villager2and4MaintenanceandServiceManualPage12-15
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