22 18 26ACSP33_27Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�The ŠKODA FABIA features a new and decentralised system for the vehicle electrics. The vehicle electrical system control unit plays a central role within this system. It combines a wide range of new functions such as check and monitoring functions as well as relay functions. The Self-Study Programme informs you of the new components and the design and operation of the electrical system of the ŠKODA FABIA.2GBContentsDecentralised Electrical System Vehicle Electrical System Control Unit Main Components BUS Systems Dash Panel Insert Lamps Windscreen Wipers Active Wheel Sensors Electrical Additional Heater Parking Aid Special Functions Self-Diagnosis Brief and to the Point Test Your Knowledge 4 7 13 18 23 26 29 30 32 34 36 38 44 46Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�Servicexxxxxxxxxxxxxxxx FABIAServicexxxxxxxxxxxxxxxx FABIAServicexxxxxxxxxxxxxxxx FABIAService Servicexxxxxxxxxxxxxxxx FABIA xxxxxxxxxxxxxxxx FABIAService Servicexxxxxxxxxxxxxxxx FABIA xxxxxxxxxxxxxxxx FABIAS e r v i c eXXXXXXXXXXXXX XXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXX XXXXXXXXYou will find notes on inspection and maintenance, setting and repair instructions in the Workshop Manual.GB3Decentralised Electrical SystemDescription/BenefitsThe electrical system is a decentralised design. The central electrics is split up into separate connector stations, relay boxes and fuse holders. – These subunits are arranged decentrally, in other words they are each located close to the elements and functional units of which they form a part. The functions of the “vehicle” complete system are split over several specialised control units. – The control units communicate with each other over CAN-BUS data lines. Benefits: – As a result of the short wiring looms, it is easier to locate and assign the cable connections. The short cable runs offer a considerable reduction in weight. Test points can be more easily assigned. The components of the vehicle electrical system are largely protected against moisture. The decentralised electrical system is easier to service.– –New components in electrical system – Vehicle electrical system control unittheir functions – Monitoring switches which are not integrated in the convenience system (e.g. steering column switch) Monitoring the voltage supply to the electrical consumer and of the consumer Interface of the BUS systems– ––Voltage distributor–Distributes the voltage supply of terminal +30a within the interior from the main fuse carrier to certain electrical consumers (e.g. to the relay, fuse box)– –Connector stations in the door pillars – in Mechanically Protected by copyright. Copying for private or commercial purposes, part or in whole, is notcoded permitted connections authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability (A or Bunless pillar) – Simplified servicing operations with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.� Connector stations at bulkhead – Enhanced fault finding4GBMain components in the decentralised electrical systemConnector station at A pillar Connector station at B pillarCompact connectorSP33_33 SP33_34Fuse carrierSP33_30 SP33_32Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�SP33_29 SP33_31Main fuse carrier on battery cover Voltage distributorSP33_35Vehicle electrical system control unitSP33_24GB5Decentralised Electrical SystemControl units in the “vehicle” complete systemControl unit in dash panel insert and immobiliser control unit ABS control unit22 18 26AC22 18 26Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�ACVehicle electrical system control unitAir conditioning control unitAirbag control unitCentral control unit for convenience systemEngine control unit Power steering control unitSP33_236GBVehicle Electrical System Control UnitVehicle electrical system control unit J519SP33_28The ŠKODA FABIA is equipped with a vehicle electrical system control unit to simplify the electrical wiring systems and to ensure efficient processing and updating of data within the vehicle electrical system. The control unit also contains a gateway. The vehicle electrical system control unit J519 is the heart of the vehicle electrical system and is responsible in detail for the following functions: – It is the interface of the two BUS systems drive CAN and convenience CAN.–It integrates relay functions, which previously were performed by separate relays (e.g. turn signal relay). It monitors vehicle components which are not integrated in the two CAN-BUS systems, such as switches and fuses. It monitors the power supply to the electrical consumers and the electrical consumption of the consumers. It processes CAN messages over the gateway integrated in the control unit.–––Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted Fitting location unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�The vehicle electrical system control unit is positioned on the left behind the cladding of the instrument panel, below the relay carrier.Note: The vehicle electrical system control unit has a self-diagnosis capability.SP33_29GB7Vehicle Electrical System Control UnitPin assignment (base configuration)Reversing light fuse Reversing light switch1Terminal 30 from fuse SB 436 1Terminal 30 from fuse 4Terminal 30, connector A236 16Interior lamp1Terminal 31Windscreen wiper fuseWindscreen wiper, stage 1Windscreen wiper, stage 2Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�5Earth1Horn pushbuttonHorn fuseHeated rear windowHeated rear window fuse5GBSP33_60816 1Headlamp cleaning system terminal Terminal 58 D PWM Hazard warning light system LED Heated rear window pushbutton Heated rear window LED Hazard warning light system pushbutton5Convenience CAN-LJ 51910Convenience CAN-H15 18 16 15K wire Terminal S Rear right door contact switch Front passenger door contact switch Terminal 30 Driver door contact switch Earth Terminal L10Terminal 15 Left rear door contact switch Terminal 50 Windscreen washer pump Windscreen wiper park switch Horn pushbutton Windscreen wiper potentiometer15 18 1Luggage compartment lighting switch6 1Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�Drive CAN-L external Drive CAN-L510Drive CAN-H Drive CAN-H external Windscreen wiper switch, stage 1 Windscreen wiper switch, stage 2 Windscreen wiper switch, intermittent wipe Left turn signal switch Drive CAN WAKE UP Right turn signal switch Bonnet contact switch Right turn signal bulbsGB916Left turn signal bulbsVehicle Electrical System Control UnitVehicle electrical system control unit, gateway and linkage of K wire+30a -31 J… J285 J104 J234 J500 CAN HDrive CANCAN H CAN L K J519 + GatewayCAN LVehicle electrical system control unitCAN HDiagnostic connectionConvenience CANCAN LJ393J386J387J388J389J301SP33_02The two current BUS systems are combined in the vehicle electrical system control unit.The vehicle electrical system control unit performs not only the monitoring functions, but also integrates a gateway function.Note: Pay attention at the moment, however, to the additional diagnostic cables (K cable) for the engine control unit and the convenience system control unit. The gateway performs 2 main tasksTask 1 Combining different data messages new data message.Task 2 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect correctness of diagnostic information in this data document. Copyright byCAN ŠKODAwire AUTO A. S.� to form a to the Receiving from the and transmitting them over the K wire and vice versa, without altering the data.10GBTask 1 The gateway combines subinformation from various data messages to form a new data message for another CAN-BUS.Data messageSP33_14Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�Task 2 The gateway reroutes data messages. It is connected, on the one hand, to the diagnostic cable (K cable) and, on the other hand, to the CAN-BUS systems. In other words, the gateway creates the possibility of conducting a diagnosis over the CAN-BUS even if no CAN-compatible tester is available. It reroutes the information from the CAN cable over the K cable, and vice versa. The information content received over the CAN and transmitted over the K cable is the same. The external K cable tester is not aware of the fact that the transmission between gateway and the control units is conducted over the CAN.Diagnostic connection Vehicle electrical system control unit+30a -31CAN-A K CAN-KSP33_13Gateway CAN - A = Drive CAN - K = ConvenienceGB11Vehicle Electrical System Control UnitConverting CAN information in the vehicle electrical system control unit (gateway function)Ambient temperature sensorCAN H - AVehicle electrical system control unit with gatewayCAN H - K CAN L - KCAN L - ACAN H - A CAN L - AEngine control unit, e.g. – coolant temperature – idling speed – acceleration221826Air conditioning control unitACSP33_55The multiple use of information of various systems over the CAN is a feature of modern vehicle electrics. For example, data messages of the drive CANBUS are used in the convenience CAN-BUS for controlling the automatic air conditioning system. The air conditioning control unit is connected to the convenience CAN (CAN-K). Information from other control units, which are connected to the drive CAN (CAN-A) is also used, however, for the automatic control.–Ambient temperature, is detected by the ambient temperature sensor G17 in the bumper, and is received in the control unit in the dash panel insert. This is connected to the drive CAN. Specific engine characteristic data, e.g. high coolant temperature, idling speed, acceleration, are received by the engine control unit (drive CAN).–The messages are converted accordingly in the vehicle electrical system control unit by means of the gateway function, and structured for the convenience CAN.The air conditioning control unit is now in a The example below illustrates the information position to use these messages for flow: Protected by copyright. Copying for private or commercial purposes, in part or in automatic whole, is not permitted unless authorised bycontrol ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability of the system. with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�12GBMain ComponentsVoltage distributorThe voltage distributor is located above the relay carrier. The voltage of terminal +30a of the main fuse carrier on the battery is distributed through the voltage distributor.Relay carrierThe relay carrier is located below the voltage distributor, above the vehicle electrical system control unit. Compared to the previous design of mini electronics centre and additional relay carrier, the relay carrier on the FABIA is a standard design of component for housing the relays.Item 1 2 3 5 6 Relay Secondary air pump relay Ignition system relay Glow plug relay Entrance warning lamp relaySP33_35Headlamp washer system relay Starter lockout relay1 5 11 62 7 12378 13 149SiProtected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted 8 Low heating capacity relay unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�Si Si15*9 11High heating capacity relay Relief relay for X contact Diesel direct injection system relay Control unit for bulb failure indicator Fuel pump relayAssignment of relay carrierSP33_5112* The relay carrier is installed in a frame which also contains 3 fuses for models equipped with electric additional heaters.13, 14 15GB13Main ComponentsMain fuse carrier on battery coverThe main fuse carrier is located on battery cover. It houses up to 6 strip fuses and 10 plug-in fuses. It is connected to the battery (positive) by means of a bolted cable. The fuses protect individual power circuits from overloads just downstream of the battery. The number of fuses is always dependent on the particular equipment of the car.Strip fuses Plug-in fusesSP33_31Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�Fuse holderThe fuse holder is located behind a cover on the side left in the instrument panel. It houses the principal fuses of the base equipment. The fuse assignment is indicated by a sticker attached to the cover.SP33_3214GBConnector stations at A pillar and B pillarConnector stations are provided in the doors for connecting the electrical components in the doors with the rest of the vehicle electrical system. These connector stations are designed as plug connections and are located in the A pillar and in the B pillar. The connector stations make a significant contribution to ease of servicing and removal and installation.Connector station in A pillar: It is located close to the top door hinge at the A pillar. It is the connector station for the following: 1 - Voltage supply, speakers 2 - Mirror, CAN-BUS 3 - Door contact, warning lamps 4 - Central locking systemProtected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�SP33_33Connector station in B pillar: It is located close to the top door hinge of the rear doors at the B pillar. It is the connector station for the following: 1 - Voltage supply, speakers 2 - Door contact 3 - Central locking systemSP33_34GB15Main ComponentsCompact connectorThe compact connector is installed in the left of the bulkhead, behind the wiper linkage. It is accessible from the engine compartment and from the interior. The compact connector is split into various modules. The connections are created by means of colour-coded and mechanically coded connectors for the individual modules.LKIHDCBAPNMGFECompact connector - viewed from engine compartmentProtected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted SP33_53 unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�Connector assignment Module A B C D E F G16responsible for ESP/TCS Gearbox/Engine Engine power supply Equipment Part 1 Anti-theft protection Battery +30 Instrument clusterModule H I K L M N Presponsible for not assigned Pedals Instrument cluster/CAN/Engine Air conditioning system Safety (ABS, …) Diesel - preheating Petrol - secondary air pump Equipment Part 2GBThe compact connector links the part of the vehicle electrical system from the front end/ engine compartment to the remaining electrical system of the interior. The vehicle electrical system is designed in such a way that all the cables of the components of the two wiring looms merge in their modules on one side of the compact connector.Bulkhead Middle part of dash panelThe further electrical connection is achieved by means of the individual connectors of the modules, irrespective of the equipment or version variants. The connector also, of course, makes it possible to easily separate the vehicle electrical system at this point.Connector stations Roof stationSP33_63Compact connector Battery Fuse carrierConnector Connector stationDiagram of location of main components and the two wiring looms merged in the compact connector– This system offers the following advantages: – – – –Optimising variants of components in production Material savings Cost reductions Improvement in ease of removal and installation and service Facilitates targeted and simplified service operationsGBProtected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�17BUS SystemsThere are at present two BUS systems which are used in the vehicle, with different priorities, and over which data are exchanged. A third BUS system (info CAN) is envisaged.Drive CANPriority 1 Transmission rate 500 kBit/sJ285 J104J519 J… J500The following are interlinked: J104 J285 J… J234 J500 J519J234SP33_18The drive CAN-BUS is integrated in the vehicle electrical system control unit.ABS control unit Control unit in dash panel insert Engine control unit Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted Airbag control unit Note: unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability Power steering control unit of information in this document. Copyright with respect to the correctness by ŠKODA AUTO S.� Please refer to A. Self-Study Programme Vehicle electrical system control unit No. 24 for more detailed information on the CAN-BUS. The basic principles apply in exactly the same way for these linkages.18GBDrive CANVehicle electrical system control unit J519Airbag control unit J234ABS control unit J104Power steering control unit J500Control unit in dash panel insert J285Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�Engine control unit J...SP33_19GB19BUS SystemsConvenience CANPriority 2 Transmission rate 100 kBit/sJ389 J387 J30122 18 26ACJ388 J386 J519Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�J393SP33_17The following are interlinked: J301 J386 J387 J388 J389 J393 J519 Air conditioning control unit Door control unit, driver side Door control unit, front passenger side Door control unit, rear left Door control unit, rear right Convenience system central control unit Vehicle electrical system control unitThe convenience CAN-BUS is integrated in the vehicle electrical system control unit.Note: Please refer to Self-Study Programme No. 24 for more detailed information on the CAN-BUS. The basic principles apply in exactly the same way for these linkages.20GBConvenience CANVehicle electrical system control unit J519Convenience system central control unit J393Air conditioning control unit J30122 18 26ACDoor control unit, driver side J386Door control unit, front passenger side J387Door control unit, rear left J388Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�Door control unit, rear right J389SP33_37GB21BUS SystemsConvenience systemThe central locking, anti-theft alarm system and other electrical components are interlinked in the convenience system. Certain information flows over the CAN-BUS, and other information over direct cables. The convenience system control unit monitors the status of the switches in the doors, the feedback messages regarding Lock/Unlock and SAFE. The tailgate components are linked directly to the vehicle electrical system control unit.Structure of convenience systemJ519Diagnostic connectionCANCANCANJ393 M Mpermitted Protected A by copyright. Copying for private or commercial purposes, in part or in whole, A is notunless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness ofR information in this document. Copyright by ŠKODA AUTO A. S.�BBDriver doorC W DCAN CANFront passenger doorEFFGGLeft rear doorMAHAMRight rear doorEJEFKFSP33_16J393 J519 A B C DConvenience system control unit Vehicle electrical system control unit Door control unit Electrically adjustable rear-view mirror Mirror and heater adjustment switch Driver door operating unitE F G H J K R WPower window switch Central locking door lock Entrance warning lamp Tailgate rotary tumbler switch Tailgate handle pushbutton Tailgate remote release Relay Components of anti-theft alarm system22GBDash Panel InsertDash panel insertThe following are integrated in the dash panel insert: – – – – – – – – Control unit J285 Immobiliser control unit J362 Speedometer Rev counter Fuel gauge Coolant temperature gauge Warning lamps Multifunction displaySP33_11All the information regarding monitoring All the warning lamps are designed as LEDs. functions is processed in the control unit J285, The dash panel insert can be easily removed. and transmitted to the warning lamps which No provision is made for repairs. The dash either light up,purposes, flash in or show a steady light. panel insert is replaced as a complete unit, Copying if Protected by copyright. for private or commercial part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability This is the case, for example, for the new necessary. with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.� systems of brake wear indicator or for the signals of the speedometer sender. Note: After the dash panel insert is replaced, it must be adapted to the other vehicle systems.Connectors of the dash panel insert8-pin connector Connection to voltage supply 32-pin connector Connection to vehicle electrical system All the connections merge in the control unit in the dash panel insert, including the drive CAN. Self-diagnosis The dash panel insert has a diagnosis capability, address word “17”. The following components can be tested using the final control diagnosis: – – – – – Rev counter Fuel gauge Coolant temperature gauge Speedometer Multifunction displayGBSP33_1232-pin connector8-pin connector– – – – –Fuel reserve warning lamp Oil pressure warning lamp Coolant temperature warning lamp Brake system warning lamp Warning buzzer23Dash Panel InsertDisplay symbolsThe enhanced functionality of the vehicle also necessitates considerably extending the system of indicator and warning lamps.SP33_08Display symbolColourDesignationType and meaning of indicationgreenCruise control comes on when cruise control system Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted system unless (Tempomat) is switched on authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liabilitywith respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�yellowBulb failurecomes on if a bulb of the brake light, side light or low beam light is faultyyellowBrake wear indicatorcomes on if the minimum permissible brake pad thickness is reached*24GBDisplay symbolColourDesignationType and meaning of indicationredDoor opencomes on if a door is open when the ignition is switched on*red Tailgate open comes on if the tailgate is open when the ignition is switched on*yellow Washer fluid level comes on if the washer fluid level is low*yellow Power steering comes on after the ignition is switched on, and goes out after the engine is started*yellow EPC = Electric Power Control (e-throttle) comes on for a short time after the engine is started, and goes out again; if it remains on or if it comes on or flashes when driving, there is a fault in the electric throttle control (e-throttle)yellowOBD = On Board Diagnosiscomes on for a few seconds when the ignition is switched on; if the light does not go out after the engine is started, or if it comes on or flashes when driving, there is a fault in the engine electronic system or in the systems which determine exhaust emissions (relates to EU4 engines!)yellowcomes on for a few seconds when the ignition is switched on; the light flashes when driving if the system is activated. The warning lamp comes on and remains on if the system is switched off, or if there is a system fault.purposes, in part or in whole, is not permitted Protected by copyright. Copying for private or commercialTCS = Traction Control Systemunless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�*GBThe indication is backed up by an audible signal - beep signal.25LampsThe lamps of the FABIA feature a new look which reflects the generally current trend.Low beam Main beam Side lightHeadlampsThe new headlamps have clear lenses made of plastic. The reflector is a single part, divided into three chambers: – – – Turn signal light Low beam/side light Main beamThe beam spread is achieved by the particular shape of the reflector chamber. The turn signal lamps are thus also integrated in the headlamp. The bulb of the turn signal lamp is coloured.SP33_49Turn signal lightTurn signal lightBrake lightRear lampsThe new rear lamps match the trend to the use of clear lenses for lights. In this case, though, only individual elements such as the turn signal light and reversing light, feature the clear look. The rear fog light and tail light feature a twinfilament bulb. The reflector is an integral part of the light lens of the rear lamp combination.SP33_50ReflectorRear fog light/tail lightProtected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�Reversing light26GBEntrance warning lampThe front doors are equipped with entrance warning lamps.SP33_09The entrance warning lamps offer a clear advantage in terms of safety when the car door is opened to the side on which the traffic is flowing.The entrance warning lamp is operated by the door contact switch in the door lock. The entrance and footwell lamp relay J348, operated by the convenience system central control unit, ensures that the entrance warning lamp is illuminated only for a limited time, for example when the car is parked with the doors opened (in a parking space or in a garage). Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability This avoids any unnecessary drain on the with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.� battery.SP33_10Electrical circuit (example of driver door) F2 M27 J348 J393 Door contact switch - driver side Entrance warning lamp - left door Entrance and footwell lamp relay Convenience system central control unitF2M27J348J393 + 30Positive EarthSP33_26GB27LampsBulb failure indicator lampBulb failure Certain model versions or equipment variants feature a new function for monitoring the principal lights of the vehicle. The failure of a bulb is indicated in the dash panel insert by a symbol lighting up. This function offers an important and inestimable benefit in terms of safety in traffic. The lights are monitored by means of the bulb failure indicator control unit (refer to item 13/ 14 on the relay carrier).SP33_45The – –Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect comes to the correctness warning lamp on: of information in this document. Copyright by ŠKODA AUTO A. S.�Bulb failure indicator control unitafter the ignition is switched on, and if a bulb failsExtent of monitoring: – – – – Side lights, only at rear, one or both bulbs Low beam, one or both bulbs Brake light, left or right, one or both bulbs Centre high-mounted brake light (in this case only a complete failure is monitored, not the failure of individual LEDs in the light)SP33_4628GBWindscreen WipersActivating rear window wiperIf reverse gear is engaged when the windscreen wipers are switched on, the rear window wiper automatically sweeps once; a further factor for enhancing road safety.F4 E22 V MElectrical circuit E22 F4 J519 V V12 Rear window wiper intermittent wipe switch Reversing light switch Vehicle electrical system control unit Windscreen wiper motor Rear window wiper motorMJ519V12SP33_68Blocking the windscreen wipersModels fitted with an alarm system feature a with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.� function for blocking the windscreen wipers. If the windscreen wipers are switched on in the intermittent wipe setting and the bonnet is opened at the same time, a signal passes from the bonnet contact switch F120 to the vehicle electrical system control unit. The control unit blocks the movement of the windscreen wipers until the bonnet is again closed. This function enhances safety when carrying out work on the vehicle.F120Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liabilityJ519Electrical circuit E22 F120 J519 V Rear window wiper intermittent wipe switch Bonnet contact switch Vehicle electrical system control unit Windscreen wiper motorE22MVSP33_69GB29Active Wheel SensorsThe new ABS wheel sensorsA new system is used in the FABIA for detecting the wheel speeds for the ABS - the active wheel speed sensor.Reader track SensorBasic principle A system is termed as active if it requires an external voltage supply for its operation. Without this, it is not able to supply a signal. To enable the active sensor of the ABS, which is firmly located in the wheel bearing housing, to measure a wheel speed, it needs a matching piece which rotates with the wheel hub. This matching piece is known as the pulse rotor or signal rotor. A magneto-resistive element (semiconductor) in the wheel speed sensor alters its resistance as a function of the magnetic lines of forces intersected by the pulse rotor. The new wheel sensors on the FABIA make use of a sensor ring with a reader track. The function of the teeth of the pulse rotor (refer to inductive sensor, SSP 26) is performed by magnets on the reader track.Wheel bearingSP33_07The active sensor is installed in the wheel bearing housing, and integrates the measuring element and amplifier. The advantages of this system are: –it is possible to measure the wheel speed from 0 km/h and down to the moment where the wheel is stationary Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA A. S. ŠKODAdesign AUTO A. S. does not guarantee or accept any liability – AUTO a compact with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.� – high resistance to corrosion – low level of mechanical interference as the gap remains practically constant – less susceptible to spurious signals – it is possible to detect the direction of rotation of the wheelSensor element (measuring element)The design of this system can be presented in a simplified form: The reader track contains small areas one next to the other, which are differently magnetised according to North pole and South pole. When the wheel bearing rotates, these areas pass close to the active sensor.Sensor electronics (amplifier) North SouthSP33_03Reader track 30GBOperating principle of the active sensor In the immediate vicinity of the magnetised areas, the magnetic lines of force are positioned vertically on the reader track. Depending on the polarity, they either run away from the track, or toward it. As the reader track moves past very close to the sensor, the lines of force also penetrate the sensor and influence its resistance. An electronic amplifier/trigger circuit integrated in the sensor, converts the changes in resistance into two different current levels. What this means is, if the resistance of the sensor element becomes greater because of the direction of the magnetic lines of force which run through it, the current drops.Reader track Lines of force Sensor electronics SP33_04ΩSensor elementIf the resistance becomes less as the direction of the lines of force is reversed, the current rises.ΩSP33_05As the North and South poles on the reader track alternate, this produces a square-wave pulse as a result of the trigger circuit, the frequency of which is a measure for the wheel speed.ΩProtected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�SP33_06GB31Electric Additional HeaterPTC additional heater(Positive Temperature Coefficient)Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�SP33_20PTC additional heater as a supplement for the heat exchanger of the vehicle heating systemOn diesel engines, the waste heat which is available, for example for heating the interior, is comparatively small. This effect is more pronounced as a result of the intensive evolution of diesel engines. It has a detrimental effect during the heatingup phase. The heating-up phase lasts too long and this in turn results in restrictions to comfort and, in particular, also to driving safety. Vehicles fitted with a diesel engine are equipped with an electrical additional heater (resistance heater) for heating the interior in order to overcome these drawbacks.The PTC additional heater converts energy from the vehicle electrical system directly into heat for the interior without any time lag. As the engine also heats up more rapidly as a result of the additional load on the generator, the conventional heating system (heat exchanger) also responds more rapidly.Note: For models fitted with a petrol engine, PTC heaters are likewise envisaged in future for particularly high comfort levels.32GBPTC additional heater – simplified presentation The PTC additional heater is located below the heat exchanger of the vehicle heating system and consists of the following main elements: – – – – – Insulator Contact plates Connections and corrugated ribs Metal frame Power electronicsSP33_21The heating elements are fixed in place and attached in the metal frame. The heating block is surrounded by an insulating plastic frame for installation in the heating/ventilation unit or air conditioning. The power electronics are also integrated in the plastic frame. Operating principle When the function position - max. heating capacity - is selected at the rotary switch of the temperature flap, the signal “heater on” is automatically transmitted through a microswitch at the temperature selector to the engine control unit. The engine control unit switches the additional heater on and controls it in line with the ambient temperature and the battery voltage (connection DFM). 3 heating stages are possible.Heat exchanger of vehicle heating systemSP33_22Electrical additional heaterMicroswitch in temperature selector Engine control unit15 21 +15 +15 DFM 22 52 73 38The PTC heater is connected for this purpose through a relay directly to the engine control Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability J359 J360 unit. with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.� On models with air conditioning, the PTC heater is controlled through the CAN-BUS by the engine control unit. No microswitch is provided at the temperature selector. The messages from the drive CAN (engine control unit) to the convenience CAN (air conditioning control unit) are converted in the vehicle electrical system control unit.G72C+30SSSAdditional heaterPTC31SP33_56GB33Parking AidRear audible parking aidThe parking aid operates on the ultrasonic principle. It assists the driver when reversing into a parking place and provides an audible warning if the car is approaching an obstacle and the distance is below a minimum safety limit. It is available as optional equipment.Parking aid sensor Continuous signalWarning signals repeated at regular intervals Parking aid control unit Warning buzzerSP33_52Design The parking aid consists of the following components: control unit, indicator (audible) and 4 sensors which contain both an ultrasonic sensor as well as a receiver. Function When the ignition is switched on, a self-test of the system is carried out and, after this, the parking aid control unit is activated. The control unit remains active so long as the ignition is switched on. When reverse gear is engaged, the distance detector is switched on automatically. The audible warning when reversing begins from a distance of about 1.60 m to an obstacle. If the distance to the obstacle is less than 160 centimetres, a warning signal sounds at regular intervals. The intervals between each two warning signals become less as the distance to the obstacle is reduced. The intermittent signal changes to a continuous signal once the distance is less than about 30 centimetres.Measuring principle The 4 sensors = ultrasonic converters are housed in the trim strip of the rear bumper. They operate as actuators and sensors, i.e. they transmit and receive. The command for transmitting or receiving ultrasonic waves is supplied by the parking aid control unit J446. The system operates on the echo sounding principle.The converters receive the echo which is reflected off an obstacle. The analysis electronics of the converters calculate the distance to an obstacle from the echo propagation time, the time between the signal being transmitted and received at the Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted converters. unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liabilitywith respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�34GBThe echo signals are converted in the analysis electronics of the senders into digital signals and passed on to the parking aid control unit. The time between the transmission and reception of the ultrasonic waves is now analysed in the control unit. The times are calculated for each converter. The distance of the vehicle to the obstacle is calculated from the different times for each converter using the triangulation method.Analysis electronicsNote: The parking aid is not active when towing a trailer.Rear parking aid sensorSP33_64Self-diagnosis+30 + 15The system has a self-diagnosis capability. If a continuous signal sounds for about 3 seconds after the ignition is switched on and reverse gear engaged, and there is no obstacle behind the vehicle, this indicates a system fault.SSF4H15J446Electrical circuit F4 J446 G203 G204 G205 G206 H15 Reversing lamp switch Parking aid control unit Left rear parking aid sensor Left rear middle parking aid sensor Right rear middle parking aid sensor Right rear parking aid sensor Parking aid warning buzzerG203G204G205G20631Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�SP33_62GB35Special FunctionsSpecial functions in the event of a crashThe safety system of the FABIA features automatic circuits which are activated in the event of a crash and which help to minimise the emergency situation. Three actions are set in motion: – – The central locking system is unlocked. The interior light is switched on, and the hazard warning lights are activated. The fuel feed is shut off.J17 J393 J519 J533Convenience CANJ...J234Drive CAN–Operating principle The crash sensor in the airbag control unit J234 is activated as a result of the vehicle deceleration during a crash. The signal is received over the drive CAN and the vehicle electrical system control unit J519 with gateway J533 and routed over the convenience CAN to the convenience system central control unit J393. The doors are unlocked, the interior light and hazard warning light system are switched on, and at the same time the crash signal passes from the airbag control unit over the drive CAN to the engine control unit. The engine control unit reacts to the signal by operating the fuel pump relay, and the voltage supply to the fuel pump is then interrupted. The fuel feed to the engine is cut off.SESESEM G6SESP33_70Note: Input signals for control units flow over the CAN-BUS.Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�36GBJ519+30 +15 CAN - H /A CAN - H /K CAN - L /A CAN - L /K S S SJ17WSE+AJ234 J... J393SG6MM5 M18 M19 M7M6 M83131SP33_71Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted J17 by ŠKODA Fuel pump relay unless authorised AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in unit this document. Copyright by ŠKODA AUTO A. S.� J234 Airbag controlColour coding/Legend = CAN/A (drive) CAN/K (convenience) Output signal Battery positive Earth= = = A G6 J…GBBattery Fuel pump Engine control unitJ393 J519 M5 M6 M7 M8 M18 M19 SE WConvenience system central control unit Vehicle electrical system control unit Bulb for left front turn signal light Bulb for left rear turn signal light Bulb for right front turn signal light Bulb for right rear turn signal light Bulb for left side turn signal light Bulb for right side turn signal light Locking units in doors Front interior lamp37Self-DiagnosisThe FABIA features a comprehensive selfdiagnosis. The vehicle electrical system control unit, in particular, makes it possible to detect and display a wide range of faults. Vehicle systems with self-diagnosis capabilityControl unit in dash panel insert and immobiliser control unit ABS control unit22 18 26RadioACVehicle electrical system control unit22 18 26Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with Air respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.� conditioningACcontrol unit Convenience system central control unit Airbag control unit Engine control unit Power steering control unitSP33_44The diagnosis can be performed with the vehicle system tester V.A.G 1552, fault reader V.A.G 1551, or with the vehicle diagnosis, measuring and information system VAS 5051. The connection for the diagnostic tester is located behind a flap in the storage compartment in the dash panel trim on the driver side.SP33_73SP33_4038GBDiagnosis with none CAN-compatible tester In this case, diagnosis to the tester still flows over the K wire. In addition to the connection to the vehicle electrical system control unit, there are at present still separate diagnostic cables (K wire) for the engine control unit and for the convenience control unit.+30a -31Engine control unitDrive CANK J519 + GatewayTo enable the tester to operate properly at all, Diagnostic connection the diagnosis information is received in the gateway of the vehicle electrical system control unit, and routed over the K wire to the diagnostic connection (refer also to Gateway).Convenience CAN Convenience control unitSP33_57Diagnosis with direct link of drive CAN The drive CAN can be activated with a login procedure for directly accessing the diagnostic connector (is not used in the service sector, however).+30a -31J519CAN-H CAN-L KDrive CANProtected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.� DiagnosticConvenience CANconnectionSP33_61GatewayDiagnosis using CAN-compatible tester Diagnosis in this case also makes use only of the CAN wires. Separate diagnosis wires (K wire) are no longer required. With the progressing use of CAN-compatible testers, diagnosis is increasingly performed over CAN wires. This makes it possible to also eliminate the K wires in the vehicle.+30a -31Drive CANCAN H CAN L J519 + GatewayNote: Detailed steps on self-diagnosis are provided in the workshop manuals of the individual fields.Diagnostic connectionConvenience CANSP33_58GB39Self-DiagnosisPin assignment of diagnostic connector Pin 3 4 6 7 8 9 11 12 14 15 16 Cable Drive CAN-H Earth Drive CAN-H, switched* K wire Convenience CAN-H Convenience CAN-L Drive CAN-L Screening Drive CAN-L, switched* L wire + 12VProtected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�8765432116 15 14 13 12 11 109presently assignedSP33_59*is not used in the service sectorAdaptation if unit replacedIf certain electronic units are replaced in the service sector, it is necessary to adapt them to the other vehicle systems with the diagnostic tester. It is essential to know the PIN (personal identification number) for conducting adaptation - function 10. This PIN must be obtained by scratching free the appropriate surface on the new unit or fob.CODE!Unit replacedAdaptation required Immobiliser Odometer reading Service interval display Speedometer characteristic curve Immobiliser ImmobiliserDash panel insertNote: Always use the up-to-date version of the Workshop Manual for adaptation!Engine control unit Ignition key40GBCodingThe coding of the control units determines the range of equipment of the vehicle or the national assignment, and enables the appropriate control unit to detect this. A new feature is that the code number is formed. The coding is factory-entered. If modifications to the range of equipment of a vehicle are carried out in the service sector, e.g. fitting heated seats or a trailer coupling, or replacing a control unit, it is then necessary to carry out a recoding. This is done by adding the values (coding number) of the relevant equipment.New!Coding The following are coded: – the engine control unit – the dash panel insert (already coded as replacement part; code only requires to be checked) – the vehicle electrical system control unit – the gateway – the ABS control unitExample for coding the vehicle electrical system control unit Note: Coding is also carried out with the vehicle system tester. The procedure for forming the code is the same for all control units.Equipment Rear window wiper with convenience control Pulse-controlled remote boot lid/ tailgate releaseValue 8192 1024Example: Determining the code number of a vehicle Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted Rain sensor unless authorised by ŠKODA AUTO A. S. ŠKODA 512AUTO A. with S. does the not guarantee or acceptequipment: any liability followingwith respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�Headlamp cleaning system Heated exterior mirrors Heated windscreen Heated seats 4-door version Interior light control Electric load management active Remote boot lid/tailgate release Trailer coupling256 128 64 32 16 8 4 2 1Rear window wiper with convenience control Pulse-controlled remote boot lid/tailgate release Heated exterior mirrors Heated seats 4-door version Interior light control Remote boot lid/tailgate release fitted Code number:8192 1024 128 32 16 8 2 ––––– 9402The control unit coding appears on the display (e.g. 09402):6Q0937049 VEH ELEC ECU 1524 WSC xxxxxSP33_67Coding09402GB41Self-DiagnosisSelf-diagnosis of vehicle electrical system control unit J519The priority attached to the vehicle electrical system control unit in the electrical system of the vehicle is also reflected in the selfdiagnosis. Self-diagnosis of the control unit makes it possible to detect a wide range of faults at the switches, pushbuttons, electrical consumers, fuses, data BUS, relays and control units, and to display these on the diagnostic tester. Test conditions: All electrical consumers must be switched off. Address word for vehicle electrical system Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted The following functions are control unit = 09, unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept anypossible: liability respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.� the following readout with also appears on the 02 - Interrogating fault memory diagnostic tester “Veh elec ECU”. 03 - Final control diagnosis 05 - Erasing fault memory 06 - Ending output 07 - Coding control unit 08 - Reading measured value block 02 - Interrogating fault memory 10 - Adaptation At present, fault information can be provided for 46 different items.SP33_28Example:Readout on V.A.G 1552 Possible causes of fault ♦ Fuse faulty ♦ Loose contact ♦ Corrosion at plug connections Possible effects Rectifying fault00899 Fuse for wiper motor S128defectiveno function– Test wiring ⇒ Current Flow Diagrams, Electrical Fault Finding and Fitting Locations – Check plug connections – Replace fuse00887 Warning light pushbutton E229implausible signal♦ Pushbutton faulty ♦ Loose contact ♦ Corrosion at plug connectionsoperating problems– Test wiring ⇒ Current Flow Diagrams, Electrical Fault Finding and Fitting Locations – Check plug connections – Replace pushbutton42GBSelf-diagnosis of gateway J533The gateway integrated in the vehicle electrical system control unit, is also known as a diagnosis interface for data BUS J533. Data BUS faults can be detected by the selfdiagnosis of the gateway. Test conditions: All electrical consumers must be switched off.K J533SP33_65Number of gatewayCAN component designation Software versionAddress word for “Gateway data BUS” = 19, the following appears in the display6N090991Gateway 00014K — CAN WSC1522 xxxxxSP33_66CodingThe following functions are possible: 02 - Interrogating fault memory 05 - Erasing fault memory 06 - Ending output 07 - Coding control unit 08 - Reading measured value block02 - Interrogating fault memory At present fault information can be provided for 32 possible items.Note: Always refer to the up-to-date version of the Workshop Manual “FABIA – Electrical System” for self-diagnosis of the systems.Example:Readout on V.A.G 1552 Possible causes of fault Possible effects Rectifying fault – Test data BUSno diagnosis no by ŠKODA AUTO A. ♦ faulty 01314 unless authorised S. Data ŠKODABUS AUTO A. S. does not guarantee or accept any liability to the correctness of information in thisunit document. by ŠKODA AUTO A. S.� communication ♦ Control notCopyright possible Engine control with respect fitted unitProtected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted01330 Convenience system central control unit J393no communication♦ Data BUS faulty ♦ Control unit not fittedno diagnosis possible– Test data BUSGB43Brief and to the PointThe new electrical system ... brief and to the pointDistribution of the functions of the “vehicle” system over several specialised control units, i.e. decentralised design of the electrical system Coordination of all the tasks in the vehicle electrical system control unit and interface within the electrical system between the CAN-BUS systems Gateway in vehicle electrical system control unit processes CAN messages, combines data messages to form a new data message Modified connector stations at the doors (A and B pillar)Connecting/separating electrical system components of engine compartment/interior by means of connector station at the bulkhead (compact connector) Distribution of terminal +30a of main fuse carrier over individual consumers by means of voltage distributor All relays combined in a homogeneous design of relay carrier Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted Headlamps designed in clear lens look, reversing lights with clear lens look Bulb failure – monitoring of bulbs, indication and warning in the event of failure Warning to traffic from behind by means of entrance warning lamps fitted to front doors Radio sets – system with self-diagnosis capability envisagedunless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�standardoptional equipment44GBActive wheel sensors – wheel speeds for ABS detected by means of an active wheel speed sensor Audible signal to driver when parking car by means of reversing parking aid Electrical additional heater for diesel models – PTC additional heater – for the interior Extended range of warning lamps in display unit of dash panel insert Self-diagnosis over CAN possible in future (requires CAN-compatible tester) Exterior mirror heater, new knob, switches off automatically after 20 minutesProtected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.� control by means of rotaryRear window heater, switches off automatically after 20 minutes Immobiliser – modified adaptation to engine control unit and vice versa Modified terminal designation (D+/B+/DFM) at connections of alternator Coding of control units is formed by the addition of coding numbers, also in service sector! Coding numbers are not secret code numbers. These still exist, as before, for the immobiliser, engine control unit and ignition key. The rear window wiper wipes automatically 1 time if reverse gear is engaged when the windscreen wipers are switched on.GB45Test Your KnowledgeWhich answers are correct? Sometimes only one. But perhaps also more than one – or all!1.The vehicle electrical system control unit A. B. C. Replaces the convenience system central control unit. Is the interface of the BUS systems. Controls the voltage demand of the vehicle electrical system.2.Which service operations have to be carried out when replacing the vehicle electrical system control unit? A. B. C. The secret code must be entered. The coding must be performed. The control unit can be replaced without a diagnostic tester.3.What are the tasks of the gateway: A. B. C.It receives diagnostic data from the K wire and routes it over the CAN wire, and vice versa. It monitors functions of the vehicle electrical system control unit. It stores the faults of all the electronic control units.4.The dash panel insert must be adapted A. B. C.After it is replaced, Each time the car is in the workshop, Each time the battery is replaced.5.Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted There are unless 2 CAN-BUS systems in the vehicle electrical system. authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�A. B. C.They operate only for the control units connected to their system. They communicate directly with each other over the compact plug connections. Their individual messages are converted in the vehicle electrical system with gateway function and also made available for control units of the other CAN.46?GB6.Models fitted with a diesel engine feature an electric additional heater A. B. C. Directly in the coolant circuit of the heating system heat exchanger. At the coolant outlet at the engine block. In the heater unit for the interior heater.7.Coding numbers are A. B. C.Secret numbers for operation of the immobiliser. Counter numbers at control units. Values for coding control units to match the vehicle equipment.8.Control units are connected in the drive CAN which are of importance A. B. C. For the slow BUS, priority 2, For the fast BUS, priority 1, For both priorities9.The audible parking aid operates A. B. C.With a visual indication. With an audible indication. On the echo sounding principle with ultrasonic.10.The entrance warning lamp is switched off after a fixed time interval if the door is open A. B. C. By the vehicle electrical system control unit. By a contact relay, controlled by the convenience system central control unit. By the gateway.GB1. B.; 2. B.; 3. A.; 4. A.; 5. C.; 6. C.; 7. C.; 8. B.; 9. B., C.; 10. B. Answers47?Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by ŠKODA AUTO A. S. ŠKODA AUTO A. S. does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by ŠKODA AUTO A. S.�