Onboard Power Supply - VolksPage - Seu Portal Volkswagen.

Onboard power supplyThe electrics boxHoused in the electrics box are the fuses forcomponents of the engine compartment andthe interior.The connection between electrics box andbattery is very short (approx. 500 mm), whichenables use of the battery as a high frequencyfilter between the consumers mounted directlyon the box.Due to the increased number of fuses, the ratingof the fuses can be set to the individualconsumers.Fitting locationThe electrics box can be found on the left in theengine compartment.Electrics boxS319 03118

The electrics box and pre-fuse box are locatedin a housing in the engine compartment.Electrics boxIn addition to the fuses, the following relays canalso be found in the electrics box: Terminal 15 voltage supply relay J329Terminal 30 voltage supply relay J317Terminal 50 voltage supply relay J682Fuel pump relay J17(not diesel and FSI)S319 009Pre-fuse boxIn the pre-fuse box are fuses for: the alternatorthe electromechanical power steeringthe radiator fanpower supply from terminal Xthe auxiliary heaterterminal 30the rear battery (V6)(to be introduced at a later stage)S319 01019

Onboard power supplyThe relay carrierFitting locationOn the left under the dash panel is a relaycarrier and the onboard supply control unit.Relay carrierAdditional relays may be included on the relaycarrier depending on the equipment level.On vehicles with electric seat adjustment, theautomatic safety device (thermal safety) isinstalled here.S319 012Relay carrier on onboard supply control unitThe following relays can be found on theonboard supply control unit relay carrier: Power supply relay terminal 30GTerminal 15 voltage supply relay(on V6 only)Terminal 75 voltage supply relayHeated rear window relay J9Horn relay J413Double washer pump relay 1 J729 (right)Double washer pump relay 2 J730 (left)S319 06520

The fuse boxFitting locationThe fuse box can be found on the left of the dashpanel behind a cover.FusesIncluded in the fuse box are fuses for theelectrical components in the vehicle.S319 013Please refer to the electronic serviceinformation system (ELSA) for currentassignment details of the fuse box.21

Onboard power supplyThe data bus diagnostic interface J533Due to the vast range of functions in the vehicle,large amounts of data must be transferred.To guarantee optimal exchange of data, severaldata bus systems are required.The function previously integrated in the dashpanel insert or onboard supply control unit isnow assumed by the separate data busdiagnostic interface (Gateway). It forms theinterface for data bus systems that areindependent of each other and allowsinformation to be exchanged without conflict orinterference.Fitting locationThe data bus diagnostic interface is installedbeneath the dash panel, above the acceleratorpedal.Master functionsThe data bus diagnostic interface takes on themaster functions of terminal 15 run-on and sleepand wake-up modes.Further information can be found inSSP 307"The Touran - Electrical system".22S319 014

Transport modeFor transportation of the vehicles to thedealerships, power consumption should be keptto a minimum to protect the battery from possibledischarge.To do this, the following systems are isolatedwhen transport mode is activated: Transport mode can only be selected during thefirst 150 km. The data bus diagnostic interfacethen switches transport mode off, after whichpoint it is no longer possible to activate it.RadioRadio remote controlInterior monitoringAuxiliary heater telestart receiverInclination sensorSave LED in door30 second interior light switch-off delayThe transport mode can only be switched onand off using diagnosis tester VAS 5051 via thevehicle self-diagnosis function [collectiveservices].S319 030"Tra" is shown, when transport mode is active, inthe odometer display of the dash panel insert.S319 02923

Onboard power supplyThe onboard supply control unit J519Fitting locationThe onboard supply control unit can be found onthe left underneath the dash panel where it formsa unit with the relay carrier.S319 065VersionsOnboard supply control unitThe onboard supply control unit is available intwo versions. High versionfor vehicles with fog lights and/or bi-xenonlights and personalisation Medium versionfor all other vehiclesFog lights can only be retrofitted if themedium version of the onboardsupply control unit is upgraded to thehigh version.24Relay carrier on onboardsupply control unitS307 017

TasksThe onboard supply control unit actuates and controls the following functions:- Exterior light control with bulb monitoringIn the event of bulb failure, the relevantwarning lamp will ligh up or a text message isdisplayed in the dash panel insert.- Rear window wiperWhen reverse gear is selected, the rearwindow wiper is activated.- Windscreen and rear window washer pump- Convenience light:Coming homeLeaving homeDimmable instrument backlights- Coulisse lighting- Turn signal control- Electric load management Shut-off below11.8 V, as in Touran- Windscreen wipersConveyance of CAN data bus signals fromonboard power supply control unit to wipermotor control unitThe onboard supply control unit also controls the following functions:- Interior light controlTerminal 30G, via which voltage is supplied tothe interior lights, is activated by the onboardsupply control unit.- Heated rear windowWhen the heated rear window button isactuated, the rear window is activated via theonboard supply control unit.- Terminal actuationThe onboard power supply control unitcontrols terminal 75x via an X contact reliefrelay.Terminal 15 is actuated via terminal 15 voltagesupply relay in the electrics box.Terminal 50 is actuated via terminal 50voltage supply relay in the electrics box.- Fuel pump readinessWhen the driver's door is opened, the electricfuel pump is supplied with power by theonboard supply control unit.After the engine has started, power is suppliedfrom the Motronic control unit.For further information, please referto SSP 307"The Touran - Electrical system".25

Onboard power supplyThe exterior light controlMain headlightsThe twin headlights with dipped and main beamreflectors are equipped with H7 bulbs on themedium version.To improve visibility for other road users, the turnsignals are located linearly beneath the dippedand main beam lights, i.e. a well balanceddistribution of light can be observed from theturn signal.On the high version, a combination of thebi-xenon module and a main beam reflectorequipped with H7 bulbs is available as anoption.The equipment is supplemented with a washersystem and dynamic headlight range control.S319 035Side lightMain beamheadlights Turn signal lightDipped beamheadlightsBulb renewal with One-Touch-SystemThanks to the spacious layout of the headlightdesign and the One-Touch-System, the cover andthe H7 bulbs can be removed by a simple twistmotion and replaced with the help ofa guide.For further information, please referto SSP 307"The Touran - Electrical system".26S319 034

Tail lightsInstalled for the first time in the Golf 2004 arethe split rear lights with round elements, whichare comprised of several elements.The light unit integrated in the side panel isresponsible for the tail, brake and turn signallight functions.Installed in the tailgate is a fog light on the leftand a reverse light on the right.The auxiliary brake light in the roof spoiler andturn signals mounted in the exterior mirrorscomplement the headlight and rear lightfunctions and provide an additional visual aidfor other road users.Tail lightTail and brake lightsS319 056Rear fog lightTurn signal lightActuation of the light functionsThe rotary light switch is a powerlesssemi-conductor module, which sends informationabout the switch position, in the way of signals,to the onboard supply control unit.The onboard supply control unit controls all ofthe relevant exterior light functions.Advantages Voltage peaks in the light switch are avoidedto increase longevity of the bulbsSpecial functions:The bulb monitoring system can be displayedvisibly in the dash panel insert27

Onboard power supplyThe convenience lightingComing homeWhen occupants alight from the vehicle andclose the doors, including the tailgate, the vehiclesurround lighting is activated for a short period.If the rotary light switch is in the dipped beamposition, the lights are switched off completelyonce the lighting period has elapsed.If the rotary light switch is in the side lightposition, the side light bulbs remain on after thesurround lighting is switched off.Leaving homeAfter the vehicle has been unlocked using theradio remote control, the area around the vehicleis lit up for a brief period.After the lighting period has elapsedor in the event of an interruption, thecoming home function cannot bereactivated until the ignition isswitched on.28

The following lights are switched on by thecoming home and leaving home function: Front side lightsDipped beam headlightsTail lightsNumber plate lightS319 070Side lightDipped beam headlightsActivation or deactivation of thecoming home and leaving homefunction and the lighting period areset in the dash panel insert via the"Light and Vision" personalisationmenu, or with the diagnosis testerVAS 5051/5052.S319 003Tail light29

Onboard power supplyThe windscreen wiper systemWiper actuationThe wiper system comprises of a single motor with mechanical connection between the wiper arms.The switch positions of wiper switch E are sent directly to the steering column electronics control unit J527and then via the convenience CAN data bus to the onboard supply control unit J519.The onboard supply control unit passes on information about the selected wiper stage via the LIN databus to the wiper motor control unit J400, which is responsible for control of the wiper action.On vehicles with rain and light detector sensor, the wiper frequency is calculated in rain sensor modeand sent to the wiper motor control unit.In intermittent operation, the wiper intermittent stages are speed dependent and vary between2 and 24 seconds.The wiper control system detects a blockage in the wiper motion and reacts according to the degree ofresistance. The wipers will try to move the obstacle out of the way. If it has still not been moved after thefifth attempt, the wiper will stay in this position.Activation of the wiper after the obstacle has been removed is possible only by actuation of thewindscreen wiper switch again.Instead of a 360 degree rotation,the drive housing of the wiperperforms a reversing action throughan angle of 150 degrees.In this way, the amount of spacerequired for the wiper linkage hasbeen reduced.30S319 069

Overview of wiper systemJ104G397J400F266DEJ519J527J533S319 016KeyDEF266G397J104Ignition/starter switchWindscreen wiper switchBonnet contact switchRain and light detector sensorABS with EDL control unitJ400J519J527J533Wiper motor control unitOnboard supply control unitSteering column electronics control unitData bus diagnostic interface31

Onboard power supplyService/winter positionIf, within 10 seconds of switching off the ignition,the windscreen wiper switch is switched to the tipwiping position, the wipers will move to theupper end position of the wiped arc.When the wiper arms are in the service/winterposition, the wiper blades can be renewedwithout restriction or the wiper arms can be liftedup to prevent the blade rubber from freezing tothe windscreen.The wipers will revert to the rest position as soonas the windscreen wiper switch is actuated twicewith the ignition switched on or at a drivingspeed of 2 km/h.S319 015When the vehicle is stationary and thebonnet is in the open position, thewipers cannot be activated.The headlight washer systemActuation of the headlight washer system iscarried out by the onboard supply control unitand is part of the "wash/wipe" function.32Activation conditionsWash cycle- Ignition on- Side, dipped or assistant driving lights ON- Steering column switch in "wash/wipe"position- Every fourth time the "wash/wipe" function isactuated