Self-Study Programme 195 The 2.3 ltr V5 Engine - Volkspage

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Motronic injection and ignition system195_057Idling switch F60Signal utilisationWhen the idling switch is closed, the enginemanagement system knows that the engine isidling.Electric circuit195_061J220Effects of signal failureIn the event of signal failure, the values of theengine management potentiometer are used todetect when the engine is idling.G40195_073J338Sensor earthThe idling switch utilises the sensor earth of theengine control unit.195_060Throttle valve positioner V60The throttle valve positioner is an electric motorand has the capability to actuate the throttlevalve over the full throttle valve operating range.Effects of failureTo control idling, the emergency running springdraws the throttle valve into the emergencyrunning position.The cruise control fails.Electric circuitG40J338J220195_064195_070V60 is activated by the engine control unit.26
Throttle valve potentiometer G69Signal utilisation195_058This potentiometer enables the engine controlunit to recognise the position of the throttle valve.195_062Electric circuitEffect of signal failureJ220If the engine control unit does not receive asignal from this potentiometer, it will compute asubstitute value based on engine speed and thesignal which the air mass meter sends.G40195_072J338Sensor earthG69 utilises the sensor earth of the enginecontrol unit. The voltage supply is identical tothat of G88.Throttle valve positionerpotentiometer G88195_059Signal utilisationThis potentiometer signals the position of thethrottle valve drive to the engine control unit.195_063Electric circuitEffect of signal failureJ220If this signal is not received, the idling controlgoes into an emergency mode. A higher idlingspeed indicates this.The cruise control fails.G40195_071J338Sensor earth27
Page 1: The 2.3-ltr. V5 EngineDesign and Fu
Page 4 and 5: IntroductionWhy do V-engines exist?
Page 6 and 7: Engine mechanicalsOffsettingTo give
Page 8 and 9: Engine mechanicalsThe engine contro
Page 10 and 11: Engine designBelt routing in the tr
Page 12 and 13: Power transmissionEngine and gearbo
Page 14 and 15: Motronic injection and ignition sys
Page 32 and 33: Function diagram3015X313015X31J17SS
Page 34 and 35: ServiceLongitudinal and transversem
Page 36 and 37: Self-diagnosisYou can select the fo
Page 38 and 39: 38Notes
Page 40: Service. 195For internal use only

Self-Study Programme 195 The 2.3 ltr V5 Engine - Volkspage

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