EV Product Line TroubleShootingSteps

PressureGauge

CheckPressureSensorOutput

• 1.Withpower off,disconnect 2 wireconnectoratthepressuresensor.

• 2.Usingamultimeterontheresistancesettingcheck2wireconnectorresistance going to the pressure sensor.

• 3.

This is the output for the pressure sensor.

• 4.Ifthepressuresensoroutputisat7Ωormorethenstarttheengineandcheckto see if the pressure sensor output change.

• 5.Usethepressuresensoroutputcharttoseeifthepressuresensoroutputmatches the pressure of the engine.

• 6.Ifmultimetermeasuresanopenorahighresistanceover114Ωthepressure sensor could have a problem.

CheckGaugeResistance

• 1.Withpoweroffdisconnectthefourwireconnectorfromwireharnessthatgoesto amplifier box

• 2.Checkwiresonstudstomakesurewirecolorsmatchlabelsonstuds. Green (GN) and Yellow (Y) and Gray (GY) and White (W)

• 3.Usingamultimeteronthe resistancesettingcheckgauge resistance.

• 4.Connectmultimeterleadsacrossstudslabelgreen(GN)andyellow(Y). Resistance should measure around 86Ω

• 5.Connectmultimeterleadsacrossstudslabelgray(GY)andwhite(W). Resistance should measure around 78Ω

• 6.Ifmutlimetermeasuresopenineitherpairthegaugecouldhavea problem.

CheckAmplifierBox

• 1.Withpower offdisconnect 2wire connectoratthepressuresensor.

• 2.Makesurethefourwireconnector goingtothegaugeisconnected.

• 3.Turn power to gauge on.

• 4.Usingamultimeteronthevoltagesettingcheckvoltageatthegauge.

#Connectpressuresensorforthese measurements.