Service Manual
TurnSignalSwitch
g032245
Figure252
1.Steeringcolumn
2.Turnsignalswitch
g032246
Figure253
TheturnsignalswitchisusedasaninputfortheTEC-5002controllertoprovide
powerfortheturnsignals.Theswitchislocatedonthesteeringtower;refer
toFigure252.
TestingtheTurnSignalSwitch
1.Beforeyoudisconnecttheturnsignalswitchfortesting,ensurethatyoutest
theswitchanditscircuitwiringasaTECcontrollerinputwiththeInfoCenter
diagnostic;refertotheInfoCenterDisplay(page5–13).
2.Ifthediagnosticdisplayveriesthattheturnsignalswitchandcircuitwiring
arefunctioningcorrectly,thennomoreswitchtestingisnecessary.
3.Ifthediagnosticdisplaydeterminesthattheturnsignalswitchandcircuit
wiringarenotfunctioningcorrectly,thentesttheturnsignalswitch.
4.EnsurethatthekeyswitchisintheOFFpositionandthekeyisremoved
fromthekeyswitch.
5.Removethefrontsteeringtowercover;refertoDisassemblingtheSteering
Tower(page7–4).
6.Locatetheturnsignalswitchanddisconnectthewireharnessconnector
fromtheswitch.
7.TheswitchterminalsaremarkedasinFigure253.Thecircuitlogicofthe
turnsignalswitchisintheCircuitLogicTable(page5–67).Withtheuseof
amultimeter(ohmssetting),testtheswitchfunctionstodetermineifthe
ElectricalSystem:TestingtheComponent
Page5–66
Groundsmaster5900TractionUnit
08159SLRevC