Toro Groundsmaster 4500-D Series - Page 63

Fault
ID
FaultTitle
Contro-
ller(s)
Affected
FaultCondition
/Circuit
Description
Additional
Notes
ServiceActions
P111CTractionCoil1
REV-Validation
Failure-Current
Converge
T1Acurrentmonitor
whichvalidates
theintended
tractioncoilcurrent
isindicating
anunexpected
variancebetween
thedesiredlevel
ofcurrenttothe
tractioncoiland
theactuallevel
ofcurrenttothe
tractioncoil.
Itisexpectedthat
theactuallevel
ofcoilcurrent
willtrackthe
desiredlevelof
currentsetby
thedrive-by-wire
module.
Tractionis
disabledand
machinewill
cometoa
suddenstop.
1.UsetheInfoCentertoverifythetraction
coiloperation.
2.Ifnoamperagereadingisdisplayed:
A.Checkthetractioncoilwiringand
connector(P74,pin32).
B.Testthetractioncoilwiring.
3.Testthetractioncoil.
4.SwaptheT1:Primarycontrollerwitha
known-goodunit(contactanAuthorized
ToroDistributorforassistance).
P111D
TractionCoil1
REV-Validation
Failure-PWM
Converge
T1PWMconvergence
ischecking2fault
conditions.The
rstcheckisto
conrmthatthe
PWMdutycycle
acrossthecoilis
decreasingwhen
thedesiredcurrent
tothecoilis0.
Thisensuresthe
voltageacrossthe
coilisapproaching
0whenrequired.
Thesecondcheck
istoverifythatthe
PWMdutycycle
acrossthecoilis
notgreaterthan
themaxallowed
limit.
Tractionis
disabledand
machinewill
cometoa
suddenstop.
1.UsetheInfoCentertoverifythetraction
coiloperation.
2.Ifnoamperagereadingisdisplayed:
A.Checkthetractioncoilwiringand
connector(P74,pin32).
B.Testthetractioncoilwiring.
3.Testthetractioncoil.
4.SwaptheT1:Primarycontrollerwitha
known-goodunit(contactanAuthorized
ToroDistributorforassistance).
P111E
TractionCoil1
REV-Feedback
Measurement
Validation
Failure
T1Theexpected
circuitfeedback
(calculated)does
notmatchthe
measuredcircuit
feedback.
Tractionis
disabledand
machinewill
cometoa
suddenstop.
1.UsetheInfoCentertoverifythetraction
coiloperation.
2.Ifnoamperagereadingisdisplayed:
A.Checkthetractioncoilwiringand
connector(P74,pin32).
B.Testthetractioncoilwiring.
3.Testthetractioncoil.
4.SwaptheT1:Primarycontrollerwitha
known-goodunit(contactanAuthorized
ToroDistributorforassistance).
P1164
Swashplate1-
SignalShorted
toGnd
T1
Shorttoground
detectedonswash
platesensorsignal.
PTOis
disabled
traction
speedis
reducedby
50%.
Checkforshortedwire(P74,pin28).
Groundsmaster
®
4500-D/4700-D
Page3–23Troubleshooting:
19245SLRevA