Case 1121F - Page 123

3-CONTROLSANDINSTRUMENTS
WARNINGDISPLAYANDERRORS
JOYSTICKSTEERINGRELATEDERROR
HANDLING
AllJSSrelatederrorswillbedisplayedonlywhiletheJSS
activationswitchisinONpositionexceptforthereder-
ror“Shorttopoweronpowersupply”andthefailureof
theactivationswitchwhichwillbealwaysdisplayedwhen
present.
AllJSSrelatederrorswillberesetbyswitchingtheJSS
activationswitchtotheOFFposition.
WhileignitionisONandJSSisdeactivatedthesoftware
willcheckiftheJSSPowerSupplyisoff.CheckJSS
OutputControlislow/open→ifnotarederrorwillbe
displayed“ShortonJSSpowersupplyJSSactive”.
Error
Item
Location
ofError
Detection
Message
1812y
JSCOpenCircuit,ShorttoBatteryorShorttoGroundatJSSarmrestswitch.
1816y
JSCOpenCircuit/JSSactivationswitchmechanicaldefect.
1820y
JSCCheckJSSRelay,JSSValve,JSSJoystickpowersupplyconnections.
1821r
JSCShorttogroundonJSSRelay85/AIC1.21orshorttoPoweronRelay86/87a.Or
ActivationSwitchfailure.
1823y
JSCJSSRELAY ,GROUNDCONNECT.,BADELEC.CONNCT .Permanentgroundat
JSSRelay(87)opencircuitorshorttopower.
1824y
JSCShorttobatteryatactivationbutton.Activationswitchfailure.
1829y
JSCJoystickSteeringisnotcalibrated.
1830y
JSCOpencircuitbetweenactivationswitchPin3andC5.EPin1.
1831y
JSCJSCCONTROLLER,WRONGOPERATION.JSCcontrollerinternalfault.
1832y
JSCJSCCONTROLLER,JSCSIGNALIN,OUTOFLIMITS.InputsignalfromJSS
joysticktoJSCcontrolleroutoflimits.(JoystickNeutral:USignal>40%UBat+
<60%Ubat;JoystickActuated:USignal>20%UBat+<80%UBat)
1833y
JSCOutputsignalfromJSCcontrollertovalveoutoflimits.CheckconnectorofJSS
valveandJSCcontroller.
1834y
JSCJSSCONTROLLER,JSCOUTPUT,SCtoBATPowerisappliedtooneofthe
JSCcontrolleroutputs.Checkelectricalconnectionforshorttopower.OrJSC
internalRelayisdefect.
1835y
AICJSS-valve/Pin4JSC/Pin5shorttopower,shorttogroundoropencircuit.
1836y
JSCJSSCONTROLLER,BOARDTEMPERATURE,OUTOFLIMITSTemperatureon
theJSCboardis<-40°Cor>+85°C;Checkambienttemperatureorshortcircuit
atJSCpoweroutputs.
1837y
JSCJSSCONTROLLER,SWITCHEDPOWER,OUTOFLIMITSSwitchedpower
supplyatJSCPin3isoutoflimit;Checkelectconnectionforelectricaltransients,
burstordrifts.
1838y
JSCNeutralSwoutofrange.
1841y
JSCJSSvalveinternalerror,spoolpositionnotaccurateorsignalvoltageoutofrange.
1842y
JSCJSSvalvePin2(alarmsignal)opencircuit.
1843y
JSCPilotpressureswitchopenwhenJSSisdeactivated.HighpilotpressureonJSS
valveevenwhenJSSisnotactive.PilotDumpvalvestuckcloseorshortto
poweronvalvepowersupply.OropencircuitonJSSpilotpressureswitchlines
orJSC/Pin8.
1844y
JSC
Pilotpressureswitchshorttoground.
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