_Octavia 1U - Electrical System

308
Service Workshop Manual OCTAVIA Service Department. Technical Information S00.5117.50.20 Edition 08.96 Electrical System

description

Octavia electric system

Transcript of _Octavia 1U - Electrical System

Page 1: _Octavia 1U - Electrical System

Service

Workshop Manual

Service Department. Technical InformationS00.5117.50.20 Edition 08.96

Electrical System

Page 2: _Octavia 1U - Electrical System

The Workshop Manual is intended only for use within the ŠKODAOrganisation; it is not permitted to pass it on to third parties.

© 1996 ŠKODA, automobilová a.s.

Page 3: _Octavia 1U - Electrical System

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Page 4: _Octavia 1U - Electrical System
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Page 14: _Octavia 1U - Electrical System

27 Starter/Power Supply

Edition 03.99

Testing electrolyte density

♦ The electrolyte density, in combination withthe voltage measurement (under load), pro-vides accurate information regarding thecharge state of a battery. Use a hydrometerfor the test.

♦ The greater the density of the electrolyteextracted from the battery, the more the floatrises. The electrolyte density can be read offon the scale as a specific weight (in kg/dm3).

The following measurements must be achieved:

Charge state in moderate Specific density inclimatic zones (kg/dm3)

discharged 1.15

half charged 1.22

well charged 1.28

Charge state in tropical Specific density inclimatic zones (kg/dm3)

discharged 1.08

half charged 1.16

well charged 1.23

Page 15: _Octavia 1U - Electrical System

Starter/Power Supply 27

Edition 08.96

Battery care:

Batteries which have not been used for a consi-derable time (e.g. in stock vehicles), dischargeand in addition a sulphate coating may form onthe plates. If such batteries are quick-chargedwith traditional chargers, they do not accept anycharge current or the charger indicates too soonthat they are “fully charged” as a result ofso-called surface charging. The batteries areapparently faulty.

- Before considering such batteries as faulty,carry out the following check:

♦ If the electrolyte density in all the cellsdoes not differ by more than 0.04 kg/dm3

(e.g. 1.15...1.11) from each other, thebattery should be charged. After complet-ing charging of the battery, test the batteryby conducting a load test. The battery isfaulty only if this test reveals that the testspecifications are not met.

♦ If the electrolyte density in one or twoadjacent cells is significantly lower (e.g.five cells indicate 1.16 and one cell 1.08),the battery has a short circuit and is faulty.

Charging battery

Notes:

♦ Do not enter areas in which batteries arebeing charged with a naked light or whensmoking. Keep precision tools away fromsuch areas.

♦ The battery should have a temperature of atleast 10 °C before being charged.

The battery charger V.A.G 1471 can be used tostandard-charge up to four 12V batteries andalso batteries with different capacities (Ah =amperehours) and rated voltages. If the batteriesbeing charged have different capacities andcharge states, charging should be properlysupervised.

Note:

It is essential to switch off the charger beforeconnecting a battery.

Page 16: _Octavia 1U - Electrical System

27 Starter/Power Supply

Edition 08.96

- Always disconnect the battery earth strap/cable and the positive cable at the battery.

- Connect the positive terminal of the batteryto the positive terminal of the charger, andthe negative terminal of the battery to thenegative terminal of the charger.

- Switch on charge current. The charge currentvaries according to the capacity of the battery.It should be about 10 % of the batterycapacity, e.g. 45 Ah battery = 4.5 A with amax. charge voltage of Umax = 14.4 V.

- If the battery voltage has dropped below11.6 V, the charging time will be about 24hours.

Quick-charging/jump-starting

- Quick-charging can be carried out with thebattery tester and charger VW 1266 whereasthe battery-starter charger V.A.G 1472 canalso be used for jump-starting.

Note:

♦ Batteries should be quick-charged only inexceptional cases.

♦ Batteries are damaged as a result of quick-charging.

Removing and installing battery

Removing:

- Remove battery protective cover -A- (Velcrofastener).

- Open main fuse box -B- to the front.

Page 17: _Octavia 1U - Electrical System

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Page 18: _Octavia 1U - Electrical System

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Page 19: _Octavia 1U - Electrical System

Page 20: _Octavia 1U - Electrical System

27 Starter/Power Supply

Edition 01.98

Models with petrol engine

Removing:

Note:

Before disconnecting the battery, check whetherradio set is provided with anti-theft code anddetermine code.

- First of all disconnect battery earth strap atthe negative terminal of the battery.

Note:

Before removing the ribbed V-belt, mark thedirection of running for reinstalling.

- Swivel tensioning pulley in direction of arrowfor slackening the ribbed V-belt.

- Take off ribbed V-belt.

Removing and installingalternator

Important!

Disconnect battery earth strap before carryingwork on the electrical system.

- Unbolt the cable -1- (B+) and unplug theconnector -2-.

- Unscrew cable clip -3- (is provided only forattaching the cable).

- Remove the bolts attaching the alternator.

Installing:

Note:

Knock back the threaded bushes for the boltsfor attaching the generator about 1 mm beforereinstalling.

- Please carry out installation in the reverseorder.

- After installing, carry out the anti-theft codingas stated in the operating instructions for theradio.

Page 21: _Octavia 1U - Electrical System

Starter/Power Supply 27

Edition 01.98

Tightening torques:

Component Nm

Alternator to bracket 25

AC compressor to bracket 45

Ribbed V-belt tensioner to bracket 25

Models with diesel engine

Removing:

Note:

Before disconnecting the battery, check whetherradio set is provided with anti-theft code anddetermine code.

- First of all disconnect battery earth strap atthe negative terminal of the battery.

- Unscrew cable clip -3-.

- Unbolt the cable -1- (B+) and unplug theconnector -2-.

Note:

Before removing the ribbed V-belt, mark thedirection of running for reinstalling.

- Position a flat ring wrench at the hexagon ofthe tensioning pulley.

- Swivel tensioning pulley in direction of arrowfor slackening the ribbed V-belt.

- Take off ribbed V-belt.

- Remove tensioning element for ribbed V-belt.

- Remove the bolts attaching the alternator.

Page 22: _Octavia 1U - Electrical System

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Page 23: _Octavia 1U - Electrical System

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Page 24: _Octavia 1U - Electrical System

Page 25: _Octavia 1U - Electrical System

Starter/Power Supply 27

Edition 08.96

Removing and installingstarter

Important!

Disconnect battery earth strap before carrying outany work on the electrical system.

Removing:

Note:

If the radio set is fitted with an anti-theft code,determine the code before disconnecting thebattery.

- First of all disconnect the battery earth strapand the negative terminal of the battery.

Models with diesel engine:

- Remove battery ⇒ page 27-4.

- Remove battery mounting bracket -arrow-.

All models:

- Unplug connector -1- and pull out of theholder.

- Unbolt cable -2- and unplug connector -3-.

- Take wiring out of the cable duct.

- Unscrew top bolt securing starter.

Page 26: _Octavia 1U - Electrical System

27 Starter/Power Supply

Edition 08.96

- Unbolt pressure pipe for power-assistedsteering from bracket -arrow on right-.

- Unscrew bottom bolt securing starter.

- Take out starter downward.

Installing:

- Carry out installation by adopting the sameprocedure in the reverse order.

- After installing, carry out anti-theft coding ofthe radio set according to the instructions.

Tightening torques:

Component Nm

Starter to gearbox 65

Pressure pipe to bracket 20

Page 27: _Octavia 1U - Electrical System

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Page 28: _Octavia 1U - Electrical System

90 Gauges/Instruments

Edition 08.96

In addition, the following adaptation functionscan be performed:

♦ Correction of fuel tank sender characteristiccurve

♦ Correction of fuel consumption display

♦ Adaptation of service interval display

♦ Adaptation of odometer if dash panel insertreplaced

Notes reference replacing the dash panelinsert

♦ The dash panel insert must not be dis-mantled.

♦ All the indicator/warning lights which are de-signed as bulbs, can be replaced individually⇒ page 90-31.

♦ The kilometre reading and the service inter-val display can be adapted using the vehiclesystem tester V.A.G 1552 if the dash panelinsert is replaced ⇒ page 90-14.

If the control unit in the dash panel insert detectsa fault at the ROM, the display “dEF” appears inthe trip counter.

- If the display “dEF” appears, replace the dashpanel insert ⇒ page 90-29.

Initiating self-diagnosis of the dashpanel insert

Test requirements:

♦ Test if fuse according to current flow diagramo.k.

♦ Always test the coding of the dash panel insertaccording to the code table ⇒ page 90-11.

Page 29: _Octavia 1U - Electrical System

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Page 30: _Octavia 1U - Electrical System

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Page 31: _Octavia 1U - Electrical System

Gauges/Instruments 90

Edition 08.96

05 - Erasing fault memory ⇒ page 90-9.

06 - Ending output ⇒ page 90-10.

07 - Coding control unit ⇒ page 90-10.

08 - Reading measured value block⇒ page 90-12.

10 - Adaptation ⇒ page 90-14.

Interrogating fault memory

Note:

The fault information displayed is not updatedconstantly but only when self-diagnosis isinitiated or if the function 05 “Erase fault memory”is selected.

- Switch on printer with Print key (indicator lightin the key comes on).

Readout on display:

- Press keys 0 and 2 (the function “Interrogatefault memory” is selected with 02) andconfirm entry with the key Q.

The number of stored faults appears on thedisplay.

The stored faults are displayed one after theother.

- Refer to the fault table for the fault displayedand rectify fault ⇒ page 90-6.

If “No fault recognised” appears on the display,the programme is returned to the initial settingafter pressing the → key.

Readout on display:

If a different readout appears on the display:⇒ Operating instructions of fault reader

- End output (function 06) ⇒ page 90-10.

Test of vehicle systems HELPSelect function XX

X faults recognised!

No fault recognised! →

Test of vehicle systems HELPSelect function XX

Page 32: _Octavia 1U - Electrical System

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Page 36: _Octavia 1U - Electrical System

90 Gauges/Instruments

Edition 01.98

- Press → key.

Readout in display:

Warning lights for♦coolant temperature/coolant level♦fuel level♦engine oil pressure♦brake fluid

are actuated and come on simultaneously.

- Press → key.

Readout in display:

The seat belt warning light (K19) is actuated andshould come on (USA only).

- Press → key.

Readout in display:

The gong is actuated and sounds continuously.

- Press → key.

Readout in display:

All the display points of the multifunction displayand/or of the LCD trip counter are actuated (allsegments).

- Press → key.

Following the sweep of the indication ranges,the following fixed values are displayed:

Coolant temperature gauge: approx. ½

Rev counter: approx. 3000 rpm

Speedometer: approx. 100 km/h

Fuel gauge: approx. ½

Final control diagnosis →Warning light test instrument cluster

Final control diagnosis →Seat belt warning light -K19

Final control diagnosis →Gong

Final control diagnosis →Segment test

Page 37: _Octavia 1U - Electrical System

Gauges/Instruments 90

Edition 01.98

Readout in display:

The coolant temperature warning light beginsto illuminate and a warning signal sounds (onlywith Climatronic).

- Press → key.

Readout in display:

- Press → key.

Readout in display:

Erasing fault memory

Note:

After the fault memory is erased, the contentsare automatically output. If it is not possible toerase the fault memory, once again interrogatefault memory and rectify and faults.

Requirements:♦Fault memory interrogated ⇒ page 90-5.♦All faults rectified.

After completing interrogation of fault memory:

Readout in display:

- Press keys 0 and 5 (the function „Erase faultmemory“ is selected with 05) and confirmentry with the key Q.

Readout in display:

The fault memory is thus erased.

- Press → key.

Readout in display:

Notes:

♦If this readout appears in the display, the test

procedure was not carried out correctly.♦Adhere strictly to test procedure: first of allinterrogate fault memory, rectify any faults,and then erase fault memory.

Final control diagnosis →Coolant excess temp. test

Function is unknown or cannot →be carried out at the moment

Test of vehicle systems HELPSelect function XX

Test of vehicle systems HELPSelect function XX

Test of vehicle systems →Fault memory is erased!

Test of vehicle systems HELPSelect function XX

Test of vehicle systems →Fault memory was not interrogated

Page 38: _Octavia 1U - Electrical System

90 Gauges/Instruments

Edition 12.98

Test of vehicle systems HELPEnter address word XX

Test of vehicle systems Q06 - End output

Code control unitEnter code number XXXXX (0-32000)

Ending output

- Press keys 0 and 6. (The function „End out-put“ is selected with 06.)

Readout in display:

- Confirm entry with the key Q.

Readout in display:

- Switch off ignition.

- Separate plug connections to vehicle systemtester V.A.G 1552.

Coding control unit

The dash panel insert can be coded as followswith this function:

♦ Additional equipment or gearbox versions

♦ National versions

♦ Number of cylinders

♦ Engine versions

Notes:

♦ By coding the dash panel insert, the variouspossible combinations of the dash panel in-sert are set depending on the equipment,national version, number of cylinders andtype of engine.

♦ If the dash panel insert is replaced, the re-placement dash panel inserts are alreadycoded. It is only necessary to code the na-tional version Saudi Arabia and vehicles witha 1.9l/81 kW TDI engine.

Performing coding

- Press keys 0 and 7.

- Confirm entry with the key Q.

Readout in display:

Page 39: _Octavia 1U - Electrical System

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Page 52: _Octavia 1U - Electrical System

90 Gauges/Instruments

Edition 12.98

Entries when the dash panel insertis replaced

It is essential to pay attention to the followingpoints when replacing the dash panel insert:

Notes:

♦ The dash panel insert only needs to be codedfor the national version Saudi Arabia and forvehicles with a 1.9l/81 kW TDI engine.

♦ Note the values of adaptation channels 10,11, 12 of the SID displayed on vehicle sys-tem tester V.A.G 1552, before replacing thedash panel insert.

♦ These remaining values have to be enteredas the counter counts back to the servicedue.

♦ Note the reading of the odometer before re-placing dash panel insert and enter as statedin the instructions ⇒ page 90-16.

♦ Adaptation of the service interval display(SID) of the odometer has to be carried outin kilometers even in countries with a milesspeedometer. In this case, convert the ad-aptation values from miles to kilometers orenter the adaptation values noted before-hand (1 mile = 1,609 km).

♦ The immobiliser control unit is integrated inthe dash panel insert, in other words if thedash panel insert is replaced, the immobi-liser control unit is also replaced, and has tobe adapted.

♦ After replacing dash panel insert, perform thefollowing steps:

- Code dash panel insert ⇒ page 90-10 (onlyfor national version Saudi Arabia and for ve-hicles with a 1.9l/81 kW TDI engine).

- Reset the SID after the service⇒ page 90-25.

and, respectively

- Enter SID remaining values for oil service⇒ page 90-20.

- Enter SID remaining values for service in-spection (distance) ⇒ page 90-21.

- Enter SID remaining values for service in-spection (time) ⇒ page 90-22.

and

- Enter kilometer/mileage reading⇒ page 90-16.

Page 53: _Octavia 1U - Electrical System

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Page 62: _Octavia 1U - Electrical System

90 Gauges/Instruments

Edition 08.96

Contact assignment at fuel gaugesender -G

The fuel gauge sender is located below the rearseats.

- Remove rear seat⇒ General Body Repairs; repair group 72; Rear

seats; Removing seat bench and backrest(split)

- Take out cross-head screws -arrows- andtake off the cover -1-.

- Unplug connector -1- from the fuel tanksender.

Testing coolant temperature sender

Test the signal at the multi-pin connector of thedash panel insert.

- Remove dash panel insert ⇒ page 90-29.

- Connect test box V.A.G 1598 with adapterV.A.G 1598/25 to the blue 32-pin connector.

- Use multimeter V.A.G 1526 A to measurethe resistance between contact 8 and contact7 (signal earth).

Specifications:

Coolant temperature 90 °C: about 110 ohms

Coolant temperature 120 °C: about 50 ohms

Page 63: _Octavia 1U - Electrical System

Gauges/Instruments 90

Edition 03.99

Testing road speed signal

If a fault exists in the cruise control system atthe speedometer, it is necessary to test whethera signal exists at the speedometer.

- Connect vehicle system tester V.A.G 1552⇒ page 90-3.

- Read measured value block ⇒ page 90-12.

- Select display group number 001 and con-duct a road test.

If the road speed appears in the display of thevehicle system tester V.A.G 1552, the dashpanel insert is faulty and must be replaced.

If no road speed appears in the display of thevehicle system tester V.A.G 1552, it is then nec-essary to test the signal at the multi-pin plugconnection at the dash panel insert.

- Remove dash panel insert ⇒ page 90-29.

- Connect test box V.A.G 1598 with adapterV.A.G 1598/25 to the blue 32-pin connector.

- Use multimeter V.A.G 1526 A to measurethe voltage between contact 28 and vehicleearth.

- Move the vehicle back and forward slightly.

Specifications:

The vehicle must rise from 0 V to about 12 Vand drop again to 0 V (pulsating direct voltage).

If the test is not o.k., test the cable connectionto the road speed sender.

- Test cable connection according to currentflow diagram.

⇒ Current Flow Diagrams, Electrical FaultFinding and Fitting Locations binder.

If the cable connection is o.k., the road speedsender should be replaced.

Page 64: _Octavia 1U - Electrical System

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Page 110: _Octavia 1U - Electrical System
Page 111: _Octavia 1U - Electrical System

Radio/Two-Way Radio/Mobile Phone 91

Edition 08.96

Radio systems

General information

Important!

Disconnect the battery earth strap before carryingout any work on the electrical system.

Notes:

♦ Additional information⇒ Operating instructions

♦ If retrofitting radio systems, carrying outrepairwork or fault finding

⇒ Current Flow Diagrams, Electrical FaultFinding and Fitting Locations

⇒ Installation Instructions

♦ Detailed removal and installation instructions,e.g. removing and installing trim panels, arecontained in the Workshop Manual GeneralBody Repairs.

♦ All radio systems are equipped with an anti-theft code, “Key Card” or quick-out fixture.

Radio system with 4 speakers

Front right woofer -3- and front left woofer-2-

♦ Integrated in door pocket

♦ Diameter 168 mm

Front right tweeter -4- and front left tweeter-1-

♦ Installed in top of door in exterior mirror trimpanel

♦ Diameter 36 mm

Page 112: _Octavia 1U - Electrical System

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Page 113: _Octavia 1U - Electrical System

Radio/Two-Way Radio/Mobile Phone 91

Edition 12.98

Tweeter rear right -8- and left -5-

♦ Installed next to the door handle

♦ Diameter 36 mm

Chamber assignment of multiple-plug con-nections I, II, III at the back of the radio - upto MY 98

Multiple-plug connection I, 10

4 - Muting (phone operation)

Multiple-plug connection II, 8

1 - Loudspeaker + rear right

2 - Loudspeaker - rear right

3 - Loudspeaker + front right

4 - Loudspeaker - front right

5 - Loudspeaker + front left

6 - Loudspeaker - front left

7 - Loudspeaker + rear left

8 - Loudspeaker - rear left

Multiple-plug connection III, 8

4 - Battery + (Term. 30)

5 - Positive connection for electronicallyamplified roof aerial

6 - Lighting (Term. 58b)

7 - Connection for ignition-key controlledactivation and de-activation (S contact)

8 - Battery - (Term. 31)

Page 114: _Octavia 1U - Electrical System

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Page 116: _Octavia 1U - Electrical System

91 Radio/Two-Way Radio/Mobile Phone

Edition 08.96

General summary of radio systems

1 - Radio♦ Installed in centre console♦ Removing and installing ⇒ page 91-5

2 - Tweeter♦ Technical data:

Nominal resistance = 4 ohms♦ Installed in inside of exterior mirror

cover♦ Removing and installing

⇒ Removing and installing speakers

3 - Roof aerial♦ with aerial amplifier♦ Removing and installing

⇒ Removing and installing roof aerial

4 - Woofer♦ Technical data:

Nominal resistance = 4 ohms♦ Installed in left of rear shelf♦ Removing and installing

⇒ Removing and installing speakers

5 - Tweeter♦ Technical data:

Nominal resistance = 4 ohms♦ Installed next to rear door handle♦ Removing and installing

⇒ Removing and installing speakers

6 - Woofer♦ Technical data:

Nominal resistance = 4 ohms♦ Installed in door pocket♦ Removing and installing

⇒ Removing and installing speakers

Page 117: _Octavia 1U - Electrical System

Radio/Two-Way Radio/Mobile Phone 91

Edition 01.98

Removing and installing radio set

Note:

Determine the code number of the radio set,before removing radio.

Removing:

- Insert both release tools, e.g. special tool-V160, as illustrated, into the front of theradio.

- Press release tools in direction of arrow andpull radio out of dash panel.

- Disconnect aerial cable.

- Unplug connectors.

Installing:

- Remove both release tools from the radio.

- Attach aerial cable to radio set.

- Plug in connectors.

- Carefully insert radio into dash panel.

Removing and installing speakers

Removing and installing front woofer

Removing:

- Unclip the speaker cover panel.

- Remove the Torx screws (4 x T20) -arrows-at the woofer and take the speaker out ofthe fixture.

- Separate the electrical connectors at thespeaker.

Installing:

- Carry out installation in the reverse order.

Page 118: _Octavia 1U - Electrical System

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Page 119: _Octavia 1U - Electrical System

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Page 121: _Octavia 1U - Electrical System

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Page 122: _Octavia 1U - Electrical System

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Page 123: _Octavia 1U - Electrical System

Radio/Two-Way Radio/Mobile Phone 91

Edition 12.98

Mobile phone systems

Warning!

Disconnect battery earth strap before performingany work on the electrical system.

Notes:

♦ Before disconnecting the battery, determinethe code number of radio sets with anti-theftcoding.

♦ When the battery is re-connected, check thevehicle equipment:- Carry out coding of radio- Reset clock time- Initialise power windows

⇒ Inspection and Maintenance

Mobile phone systems come in two versions.As a complete phone system and as mobilephone pre-wiring.

Subsequent mounting of mobile phones is pos-sible in vehicles with mobile phone pre-wiring.To operate in Škoda vehicles mobile phonesrequire their own control electronics, the so-called interface box. This interface box ensuresthe connection between mobile phone and thevehicle components via a standard VDA plugconnection.The Škoda series phone is connected to thisVDA plug connection via a special interface box.Contact the relevant mobile phone manufacturerto determine which interface box is required forother mobile phone makes. Interface boxes with-out VDA plug require an adapter (e.g. of the firmVotex).

The following pages give an overview of thepossible versions.

Page 124: _Octavia 1U - Electrical System

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Page 134: _Octavia 1U - Electrical System

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Page 135: _Octavia 1U - Electrical System

Radio/Two-Way Radio/Mobile Phone 91

Edition 03.99

1U0035186C Radio 0002 →Coding 01403 WSC XXXXX

Test of vehicle systems HELPControl unit does not answer!

Test of vehicle systems HELPFault in communication build-up

Test of vehicle systems HELPK wire not switching to earth

Test of vehicle systems HELPK wire not switching to positive

The display appears after about 5 seconds, e.g.:♦1U0035186C: set version number of radioset♦Radio: component designation♦0002: software version♦Coding 01403: coding of radio set♦WSC XXXXX: workshop code

Readout in display of radio during self-diagno-sis: „DIAG“.

- Press the → key.

If one of the following messages appears in thedisplay, carry out fault finding according to faultfinding programme diagnostic cable.⇒Current Flow Diagrams, Electrical Fault

Finding and Fitting Locations binder

- After pressing the HELP key, a list of thepossible functions is displayed.

- Continue in the test programme by pressingthe → key.

Self-diagnosis functions

The following functions are possible:

02 - Interrogating fault memory ⇒ page 91-18.

03 - Final control diagnosis ⇒ page 91-21.

05 - Erasing fault memory ⇒ page 91-18.

06 - Ending output ⇒ page 90-10.

07 - Coding control unit („gamma“ radio)⇒ page 91-22.

08 - Reading measured value block⇒ page 91-24.

Page 136: _Octavia 1U - Electrical System

91 Radio/Two-Way Radio/Mobile Phone

Edition 03.99

Test of vehicle systems HELPSelect function XX

X faults recognized!

Test of vehicle systems HELPSelect function XX

Test of vehicle systems →Fault memory is erased!

Interrogating and erasing faultmemory

Special tools, testers and aids required♦Vehicle system tester V.A.G 1552 with cableV.A.G 1551/3

- Switch on the ignition.

- Connect vehicle system tester V.A.G 1552and select radio set (address word 56)⇒ page 91-16.

Readout in display:

- Press the keys 0 and 2 for the function „In-terrogate fault memory“ and confirm the en-try with the key Q.

The number of stored faults or „no fault recog-nized!“ appears in the display.

If one or several faults are stored:

The stored faults are displayed one after theother.

Readout in display:

- Press keys 0 and 5 for the function „Erasefault memory“ and confirm the entry with thekey Q.

Note:

If you have switched off the ignition between„Interrogating fault memory“ and „Erasing faultmemory“, the fault memory is not erased.

Readout in display:

- Press the → key.

- Press keys 0 and 6 for the function „Endoutput“ and confirm the entry with the key Q.

- Rectify the faults displayed by referring to thefault table ⇒ page 91-19.

Page 137: _Octavia 1U - Electrical System

Radio/Two-Way Radio/Mobile Phone 91

Edition 03.99

Test of vehicle systems HELPSelect function XX

If no fault is stored:

- Press the → key.

Readout in display:

- Press keys 0 and 6 for the function „Endoutput“ and confirm the entry with the key Q.

Fault table

Notes: ♦If components are shown as faulty:First of all test the wiring and plug connections to thesecomponents and also the earth cables of the systemaccording to the current flow diagram. Replace the com-ponent only if no fault is found here. This applies inparticular if faults are displayed as „sporadically occur-ring“ (SP).

♦The fault table is arranged according to the 5-digit faultcode shown on the left.♦Explanations to types of faults (e.g. „open/short circuitto earth“):⇒Operating Instructions of fault reader

Readout on V.A.G 1552

00668

System voltage tml. 30

Signal too small*

* This fault may also be storedif the starter has been oper-ated for more than 10 sec-onds!

00849

S contact at ignition/starterswitch - D

Open circuit

Possible cause of fault♦Battery voltage below 9.5V, battery insufficientlycharged♦Battery faulty♦Alternator faulty♦Ignition/starter switch noto.k.♦Wiring not o.k.♦Radio not o.k.

Possible effects

Radio set not operating at allor poorly

Radio set does not switch onagain automatically when ig-nition switched on if ignitionwas previously was switchedoff when radio on.When radio is operating, itswitches off automatically 1 hafter ignition is switched on.

Rectifying fault

- Read measured valueblock ⇒ page 91-24

- Test battery, charge if nec-essary ⇒ page 27-1

- Test alternator ⇒ page27-1

- Read measured valueblock ⇒ page 91-24

- Test wiring according tocurrent flow diagram

- Test ignition/starter switch,replace if necessary⇒ page 94-14

Page 138: _Octavia 1U - Electrical System

91 Radio/Two-Way Radio/Mobile Phone

Edition 03.99

Readout on V.A.G 1552

00852

Speaker f

Short circuit

Open circuit

00853

Speaker r

Short circuit

Open circuit

00855

Connection to CD changeror CD player

No communication

00856

Aerial (radio)

Short circuit

Open circuit

01044

Control unit incorrectlycoded

65535

Control unit defective

Possible cause of fault

♦ Short circuit in cables toeach other or to earth of afront speaker

♦ Open circuit in cable to afront woofer

♦ Short circuit in cables toeach other or to earth of arear speaker

♦ Open circuit in cable to arear speaker

♦ Wiring to CD changerfaulty

♦ CD changer faulty♦ Radio faulty

♦ Aerial cable faulty♦ Aerial cable not con-

nected♦ Aerial faulty

Radio functions not coded

Radio faulty

Possible effects

♦ A front speaker not operat-ing

♦ A front woofer not operat-ing

A rear speaker not operating

CD changer function not o.k.

No or poor radio reception

♦ Radio functions or soundnot o.k.

♦ Incorrect fault entries infault memory

Function of radio set not o.k.

Rectifying fault

- Carry out final control di-agnosis ⇒ page 91-21

- Read measured valueblock ⇒ page 91-24

- Test wiring according toCFD

- Carry out final control di-agnosis ⇒ page 91-21

- Read measured valueblock ⇒ page 91-24

- Test wiring according toCFD

- Read measured valueblock ⇒ page 91-24

- Test wiring according toCFD

- Replace CD changer- Replace radio

- Read measured valueblock ⇒ page 91-24

- Test aerial cable- Test wiring according to

CFD- Test aerial

- This fault message cannotbe erased

- Code radio functions⇒ page 91-22, „gamma“radio

- Replace radio

Page 139: _Octavia 1U - Electrical System

Radio/Two-Way Radio/Mobile Phone 91

Edition 03.99

Test of vehicle systems HELPSelect function XX

Test of vehicle systems Q03 - Final control diagnosis

Final control diagnosis →Loudspeaker

Final control diagnosis

The following components are actuated in theorder stated with the final control diagnosis:

1. Speakers

2. Output of radio display in dash panel insert

Note:

Item 2 is also performed if dash panel insertsare fitted which do not have a radio display.

Special tools, testers and aids required♦Vehicle system tester V.A.G 1552 with cableV.A.G 1551/3

Test condition

Fuses o.k.

Test procedure

- Connect vehicle system tester V.A.G 1552and select radio set (address word 56); igni-tion is switched on for this step ⇒ page91-16.

Readout in display:

- Press keys 0 and 3 for the function „Finalcontrol diagnosis“.

Readout in display:

- Confirm the entry with the key Q.

Readout in display:

The loudspeakers are tested with a test current.

If a loudspeaker circuit of the system is detectedas faulty during the test, it is stored as a faultmessage in the fault memory.

- Interrogate fault memory.

- Repair wiring or speaker, as appropriate,erase fault memory and repeat final controldiagnosis.

Page 140: _Octavia 1U - Electrical System

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Page 150: _Octavia 1U - Electrical System

91 Radio/Two-Way Radio/Mobile Phone

Edition 03.99

Removing and installing CDchanger

The CD changer is located in the left trim of theluggage compartment.

Warning!

Disconnect battery earth strap before working onelectrical system.

Notes:

♦ Before disconnecting the battery, determinethe coding of radio sets fitted with anti-theftcoding.

♦ When the battery is connected again, checkthe vehicle equipment:- Carry out coding of radio- Re-set clock- Initialise power windows.

⇒ Inspection and Maintenance

Removing

- Take off the trim panel at the CD changer.

- Remove the 4 screws -1- (4 Nm) from themount -2- and take out the CD changer -3-.

- Separate the plug connection.

Installing

- Installation is carried out in the same way inthe reverse order.

Page 151: _Octavia 1U - Electrical System

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Page 179: _Octavia 1U - Electrical System

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Page 182: _Octavia 1U - Electrical System
Page 183: _Octavia 1U - Electrical System

Windscreen Wiper and Washer System 92

Edition 12.98

Windscreen wiper system

Warning!

Disconnect earth strap of battery before perform-ing any work on the electrical system.

Removing and installing wind-screen wiper system

Note:

Before removing the wiper arms make sure thewiper motor is in park position.

Removing the wiper arms:

- Remove wiper blades

- Release both cover caps on the wiper bladeswith a screwdriver.

- Loosen hexagon nuts -arrows- but do notunscrew fully.

- Release the wiper arms with a gentle mo-tion.

- Fully unscrew hexagon nuts and removewiper arms.

- Remove the water tank cover.⇒ Body Fitting Work; Repair Group 66;

Screens

Page 184: _Octavia 1U - Electrical System

92 Windscreen Wiper and Washer System

Edition 08.96

Removing wiper frame together with linkageand wiper motor

- Unplug connector at the wiper motor.

- Remove the three hexagon bolts -1-.

- Carefully tilt the wiper frame -2- forward-arrows- and then take it complete out of theplenum chamber by moving to the left.

Disconnecting wiper motor from the linkage

- Unscrew the three hexagon nuts -2- at thefixture of the wiper motor.

- Take off the crank at the wiper motor byunscrewing the hexagon nut and then takethe wiper motor off the linkage.

Installing:

- Attach the wiper motor -1- to the crank atthe linkage -3- (8 Nm) and set the parkposition of the linkage -a-.

- Bolt the wiper motor to the bracket with thehexagon bolts -2-.

- When installing wiper frame, insert the wiperframe into the plenum chamber with the wipermotor ahead.

- Tilt wiper frame back and bolt on -8 Nm.

- Carry out all the remaining installation stepsby adopting the same procedure in thereverse order to removing.

- Set windscreen wiper blades to the parkposition ⇒ page 92-3.

Page 185: _Octavia 1U - Electrical System

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Page 186: _Octavia 1U - Electrical System

92 Windscreen Wiper and Washer System

Edition 08.96

Servicing windscreen washersystem

Important!

Disconnect battery earth strap before carrying outany work on the electrical system.

Removing and installing washerfluid reservoir

Removing:

- Unscrew the hexagon bolts -1- and lift thecoolant expansion tank -A- up and out.

- Remove the two cross-head screws -2- andtake the activated charcoal filter or diesel filterout of the engine compartment.

- Unscrew the hexagon nuts -arrows-.

- Lift the washer fluid reservoir -A- up and outof the engine compartment.

- Unplug the connectors at the windscreenwasher pump.

- Pull the windscreen washer pump out of thewasher fluid reservoir and then take off thereservoir.

Installing:

- Carry out installation by adopting the sameprocedure in the reverse order.

Page 187: _Octavia 1U - Electrical System

Windscreen Wiper and Washer System 92

Edition 12.98

Removing and installing spray noz-zles

Removing

- Remove wiper arms ⇒ Page 92-1.

- Remove the water tank cover.⇒ Body Fitting Work, Repair Group 66;

Screens

- Push the spray nozzle upward out of thewater tank cover.

Installing

- Carry out installation in the same way in re-verse order.

Setting the spray nozzles

Until 05.98

- Use a suitable needle to set the spray noz-zles as shown in figure.

As from 06.98

The windscreen washer system is set by themanufacturer and cannot be adjusted later.

- The windscreen is sprayed with two taperedspray jets.

Note:

If the spray jet is irregular, replace the spraynozzle.

Page 188: _Octavia 1U - Electrical System

92 Windscreen Wiper and Washer System

Edition 09.96

Servicing headlight cleaningsystem

Removing and installing spraynozzles of headlight cleaningsystem

Removing

- Remove bumper -1-⇒ General Body Repairs; Repair Group 63;

Front Bumper; Removing and installing frontbumper

- Separate the washer fluid connection of theheadlight cleaning system.

- Pull off each of the retaining bracket -3- inorder to remove the spray nozzles -2-.

- Separate connection of the spray nozzles tothe washer fluid pipe.

- Lift the spray nozzles up and out.

Installing

- Installation is carried out to the reverse order.

- Install the bumper⇒ General Body Repairs; Repair Group 63;

Front Bumper; Removing and installing frontbumper

Setting spray nozzles

Note:

The spray nozzles are pre-set by the manu-facturer when supplied and the position mustnot be altered after installing.

Removing and installing washerfluid reservoir

Note:

The common washer fluid reservoir for thewindscreen washer and headlight cleaningsystem is located in the front right of the enginecompartment. Removing and installing ⇒ page92-4.

Page 189: _Octavia 1U - Electrical System

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Page 190: _Octavia 1U - Electrical System

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Page 191: _Octavia 1U - Electrical System

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Page 192: _Octavia 1U - Electrical System

Page 193: _Octavia 1U - Electrical System

Page 194: _Octavia 1U - Electrical System

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Page 195: _Octavia 1U - Electrical System

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Page 198: _Octavia 1U - Electrical System

Page 199: _Octavia 1U - Electrical System

Page 200: _Octavia 1U - Electrical System

94 Exterior Lights/Bulbs/Switches

Edition 09.96

Changing bulbs of headlight

Changing bulb for fog light and/or mainbeam/dipped beam

Removing:

- Take end cover off headlight housing.

- Separate plug connection at the fog light bulb-1- or at the main beam and dipped beambulb -2-, respectively.

- Release the relevant spring wire clamp andtake the bulb out of the housing.

Installing:

- Plug in the connector again. Close the hous-ing cover.

- Insert new bulb into the bulb holder; do nottouch the glass of the bulb with your barehands.

- Secure the bulb holder with the spring wireclamp.

Removing and installing bulb for side light

- Pull off cap.

- Pull bulb together with holder -3- at theconnector out of the reflector.

- After changing bulb, press holder with bulbfully into the reflector.

Page 201: _Octavia 1U - Electrical System

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Page 202: _Octavia 1U - Electrical System

Page 203: _Octavia 1U - Electrical System

Page 204: _Octavia 1U - Electrical System

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Page 205: _Octavia 1U - Electrical System

Exterior Lights/Bulbs/Switches 94

Edition 01.98

Removing and installing side turnsignal lights

Removing:

- Use a suitable tool to unclip the side turnsignal light -arrow-.

Notes:

♦ Use a suitable product (e.g. textile adhesivetape) to mask over the surface of thepaintwork.

♦ The catch -arrow- is located on the right-handand left-hand side of the car, at the front ineach case.

- Pull the turn signal light out of the wing.

- Pull the housing -1- out of the rubbergrommet -2-.

- The bulb -3- can also be removed forreplacing.

Installing:

- Carry out installation in the reverse order.

Note:

When installing the housing -1-, ensure that theguide lugs engage in the recesses of the socket-2-.

- Press the turn signal light housing -1- intothe wing so that it locks in place properly.

Page 206: _Octavia 1U - Electrical System

94 Exterior Lights/Bulbs/Switches

Edition 01.98

Page 207: _Octavia 1U - Electrical System

Exterior Lights/Bulbs/Switches 94

Edition 09.96

Servicing rear lights

Important!

Before carrying out any work on the electricalsystem, disconnect earth strap of the battery.

General survey

1 - Rear light housing

2 - Bulb for rear fog light♦ 12 V, P21 W

3 - Bulb for tail light♦ 12 V, R5 W

4 - Securing nut, M 5♦ 3 Nm

5 - Body

6 - Bulb holder

7 - Bulb for turn signal light♦ 12 V, P21 W

8 - Bulb for brake light♦ 12 V, P21 W

9 - Bulb for reversing light♦ 12 V, P21 W

Removing and installing bulbs fromthe bulb holder

- Compress locking clamp -2- and take bulbholder -3- out of the rear light assembly.

- Unscrew bulbs from the holders.

- Installation is carried out in the reverse order.

Page 208: _Octavia 1U - Electrical System

94 Exterior Lights/Bulbs/Switches

Edition 09.96

Removing and installing tail light

Removing:

- Open tailgate.

- Take off side trim panel.

- Separate electrical plug connection -1-.

- Unscrew the M5 securing nuts -arrows-(3 Nm).

- Take the complete tail light assembly out ofthe rear of the car.

Installing:

Note:

When installing, ensure that the seal betweenthe body and the tail light housing provides aproper seal.

- Installation is carried out in the reverse order.

- Before tightening the securing nuts, align thetail light assembly to match the shape of thebody (even sizes of gaps).

Page 209: _Octavia 1U - Electrical System

Exterior Lights/Bulbs/Switches 94

Edition 09.96

Removing and installinglicence plate lights

Important!

Before carrying out any work on the electricalsystem, disconnect earth strap of the battery.

Removing:

Note:

Only the right-hand licence plate lights areshown in the illustration.

- Slacken the 2 cross-head screws -2- at thelens of the light -1-.

- Take off the lens of the light.

- Remove bulb (12V, 5W) from the bulb holder.

Installing:

- Installation is carried out in the reverse order.

Page 210: _Octavia 1U - Electrical System

94 Exterior Lights/Bulbs/Switches

Edition 01.98

Servicing steering columnswitch

Important!

Before carrying out any work on the electricalsystem, disconnect earth strap of the battery.

Removing and installing steeringcolumn switch

Removing:

- Disconnect battery earth strap/cable.

- Move steering wheel into centre position, inother words the wheels are positionedstraight ahead.

- Move adjustable steering column fully downand pull out.

Note:

Always pay attention to the safety precautionsfor airbag systems when carrying out work onthe components of the airbag system⇒ Body Fitting Work; Repair Group 69; Airbag;

Removing and installing driver airbag

- Use a screwdriver -2- to release the springsof the airbag unit -1- at the left and right ofthe steering wheel from the rear.

- Carefully take off airbag unit.

- Unplug electrical connector of the airbag unitand place airbag unit down with the paddedboss facing up.

- Remove hexagon bolt -1- and take steeringwheel off the steering column.

Important!

Always insert a new hexagon bolt.

Tightening torque: 75 Nm

Important!

When taking off the steering wheel, do not turnthe contact coil spring out of the centre position.

Page 211: _Octavia 1U - Electrical System

Exterior Lights/Bulbs/Switches 94

Edition 09.96

- Slacken the two cross-head screws -1- andtake off the handle for adjusting the steeringwheel.

- Then, remove the two cross-head screws -3-.

- Use a thin, long cross-head screwdriver toremove the two securing screws -2-.

- Take off the top and bottom parts of thesteering column switch trim.

- Separate electrical plug connection -1-.

- Slacken hexagon socket screw (5 mm) -2-at the clamp until the steering column switchcan be moved easily.

- Carefully unplug the electrical connectorsfrom the steering column switch.

Important!

The coil spring remains on the steering columnswitch. Ensure that the coil spring is not turnedout of the centre position.

- Take steering column switch off the steeringcolumn and place down.

Installing:

- First of all fix the steering column switch -2-in place on the steering column with thehexagon socket screw -3- so that a clearanceof -a = 3 mm- is maintained to the steeringwheel -1-.

- Take off steering wheel again and carry outremaining installation in the reverse order toremoval.

Page 212: _Octavia 1U - Electrical System

94 Exterior Lights/Bulbs/Switches

Edition 12.98

Contact assignment at steering col-umn switch - up to MY 98

A - Contact for windscreen wiper switch

B - Contact for on-board computer(special equipment)

C - Contact for speed control system(special equipment)

D - Contact for turn-signal switch

Contact assignment for windscreen wiperswitch -A-

1 - Terminal 53a

2 - Interval wiping

3 - Terminal 53b

4 - Rear-window wiper

5 - Terminal 53c

6 - Terminal 53e

7 - Terminal 31

8 - Terminal 53

Contact assignment for turn-signal switch-D-

1 - Terminal 56

2 - Terminal 56b

3 - Terminal PL

4 - Terminal PR

5 - Terminal R

6 - Terminal 56a

7 - Terminal 30

8 - Terminal 30

9 - Terminal L

10 - Terminal P

11 - Terminal 49a

12 - Terminal 71

Page 213: _Octavia 1U - Electrical System

Exterior Lights/Bulbs/Switches 94

Edition 12.98

Contact assignment at steering col-umn switch - as from MY 99

A - Contact for windscreen wiper switch

B - Contact for multi-function indicator (spe-cial equipment) and windscreen wiper in-terval switch

C - Contact for speed control system(special equipment)

D - Contact for turn-signal switch

Contact assignment for windscreen wiperswitch -A-

1 - Terminal 53a

2 - Interval wiping

3 - Terminal 53b

4 - Rear-window wiper

5 - Terminal 53c

6 - Terminal 53e

7 - Terminal 31

8 - Terminal 53

Contact for multi-function indicator (specialequipment) and windscreen wiper intervalswitch -B-

1 - MFI - top function selection

2 - MFI - bottom function selection

3 - MFI - Terminal 31

4 - MFI - Reset/change-over switch level ½

5 - Control unit for windscreen wiper intervalcontrol (POT)

6 - Terminal 31

Page 214: _Octavia 1U - Electrical System

94 Exterior Lights/Bulbs/Switches

Edition 12.98

Contact assignment for speed control sys-tem switch -C-

2 - SCS - Return to stored speed

3 - SCS - Set/Accelerate

4 - SCS - On/Off with stored speed delete

5 - SCS - Reset without stored speed delete

6 - Terminal 15

7 - SCS - On/Off with stored speed delete

Contact assignment for turn-signal switch-D-

1 - Terminal 56

2 - Terminal 56b

3 - Terminal PL

4 - Terminal PR

5 - Terminal R

6 - Terminal 56a

7 - Terminal 30

8 - Terminal 30

9 - Terminal L

10 - Terminal P

11 - Terminal 49a

12 - Terminal 71

Page 215: _Octavia 1U - Electrical System

Exterior Lights/Bulbs/Switches 94

Edition 01.98

Servicing lock cylinder andignition/starter switch

Important!

Before carrying out any work on the electricalsystem, disconnect earth strap of the battery.

Notes:

♦ The reader coil for the immobiliser is attachedto the lock cylinder and cannot be replacedseparately.

♦ If the reader coil is faulty, it is then necessaryto replace the lock cylinder.

♦ Steering wheel and steering column switchdo not need to be removed. The illustrationsshow the parts without steering wheel andsteering column switch to simplify the picture.

Removing and installing lockcylinder

Removing:

- Move the adjustable steering column fullydown.

- Remove the cover panels.

- Separate plug connection of the reader coil-1-.

Page 216: _Octavia 1U - Electrical System

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Page 218: _Octavia 1U - Electrical System

94 Exterior Lights/Bulbs/Switches

Edition 12.98

Removing and installing rearlights of Octavia Estate

Warning!

Disconnect earth strap of battery before perform-ing any work on the electrical system.

Notes:

♦ Before disconnecting the battery, determinethe code number of a radio set fitted withanti-theft coding.

♦ When the battery is re-connected, check thevehicle equipment:- Carry out coding of radio- Reset time of clock- Initialise power windows.

⇒ Inspection and Maintenance

Removing

- Open tailgate.

- Open side compartment.

- Separate electric connector.

- Unscrew the fixing nuts (M5) -1- (3 Nm).

- Take the complete rear light -2- off the rearof the vehicle.

Installing

Note:

When installing, ensure that the gasket betweenthe body and the rear light housing provides aproper seal.

- Carry out installation in the same way in re-verse order.

- Before tightening the fixing nuts, align therear light to the body panels (even gaps).

Page 219: _Octavia 1U - Electrical System

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Page 249: _Octavia 1U - Electrical System

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Page 250: _Octavia 1U - Electrical System

94 Exterior Lights/Bulbs/Switches

Edition 03.02

Adjusting facilities for sensors

Adjusting front sensor:

Models 08.01 (only with 1.8-ltr/110 and 132 kW, 1.9-ltr/74and 81 kW engines)

- No adjustment.

Other models

This involves adjusting a pull rod which is partof the sensor.

- Raise vehicle.

FWD models

Front-wheel drive with anti-roll bar attached tosteering link.

- Adjust pull rod to plastic device which is apart of the new sensor.

- After installing, remove the device.

Front-wheel drive with anti-roll bar attached tosuspension strut.

- Adjust pull rod to middle of recess.

4x4 models

4x4 drive with anti-roll bar attached to suspen-sion strut.

- Adjust pull rod up to stop of top recess.

4x4 drive with anti-roll bar attached to steeringlink.

- Adjust pull rod to plastic device which is partof the new sensor.

- After installing, remove the device.

Adjusting rear sensor:

FWD models

- No adjustment.

Page 251: _Octavia 1U - Electrical System

Exterior Lights/Bulbs/Switches 94

Edition 03.02

4x4 models

- Adjust to a distance of 153 mm between pullrod bar of sensor and steering link eye.

Specifications for sensors

Voltage at front sensor when vehicle stationarywith no load: 2.3 - 2.8 V.

Voltage at rear sensor when vehicle stationarywith no load for FWD models: 1.9 - 2.3 V.

Voltage at rear sensor when vehicle stationarywith no load for 4x4 models: 3.5 - 3.9 V.

Contact assignment on xenonheadlights

Contact assignment of 20-pin control unit

1 - Igniter - H

2 - Igniter - negative

3 - Igniter - positive

4 - Terminal 56b

5 - Terminal 31

6 - Rear sensor signal

7 - Sensor GND

8 - Front sensor signal

9 - Connection to SLAVE

10 - Warning light

11 - Sensor voltage supply

12 - Terminal 15

13 - Diagnosis

14 - not assigned

15 - not assigned

16 - Vehicle speed signal

17 - Stepping motor

18 - Stepping motor

19 - Stepping motor

20 - Stepping motor

Page 252: _Octavia 1U - Electrical System

94 Exterior Lights/Bulbs/Switches

Edition 03.02

Contact assignment of left headlight

12-pin plug connection for connecting to mainwiring loom of electrical system.

1 - Terminal 15 from fuse 2 of inner fuseholder

2 - Diagnosis

3 - Terminal 58L, side light

4 - Fog light

5 - Terminal 56A main beam

6 - Terminal 56B dipped beam

7 - Terminal 31 GND for side light, mainbeam, fog light

8 - Terminal 31 GND for dipped beam, con-trol unit and stepping motor

9 - Vehicle speed signal of ABS

10 - not assigned

11 - From dash panel insert pin 21 green con-nector

12 - Left - right headlight bridge

4-pin plug connection for sensor connection ofvehicle (only for master - left headlight)

1 - Sensor voltage supply

2 - Rear sensor signal

3 - Front sensor signal

4 - Sensor GND

Contact assignment of right headlight

12-pin plug connection for connecting to mainwiring loom of electrical system.

1 - Terminal 15 from fuse 2 of inner fuseholder

2 - Diagnosis

3 - Terminal 58L, side light

4 - Fog light

5 - Terminal 56A main beam

6 - Terminal 56B dipped beam

7 - Terminal 31 GND for side light, mainbeam, fog light

8 - Terminal 31 GND for dipped beam, con-trol unit and stepping motor

9 - not assigned

10 - not assigned

11 - From dash panel insert pin 21 green con-nector

12 - Left - right headlight bridge

Page 253: _Octavia 1U - Electrical System

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Page 254: _Octavia 1U - Electrical System
Page 255: _Octavia 1U - Electrical System

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Page 256: _Octavia 1U - Electrical System

96 Interior Lights/Bulbs/Switches - Anti-Theft Alarm

Edition 08.96

Note:

The description which follows relates only to thevehicle system tester V.A.G 1552. Use of thefault reader V.A.G 1551 with integrated printeris similar. There may, however, be slightdifferences in the readouts on the display.

Notes regarding use and adaptation of thecar keys

The engine will start only if an authorised carkey is used, in other words a key which has beenadapted to the immobiliser control unit.

When adapting the car keys ⇒ page 96-11, it isalways necessary to adapt all the keys of thecar, in other words also the replacement keysto the immobiliser control unit.

If new or additional car keys are required, carryout adaptation of the car keys.

If it is not possible to carry out adaptation of allthe car keys for particular reasons, e.g. if a keyis lost during a trip, the customer should beadvised that adaptation has to be carried outsubsequently for all the keys of the car.

Initiating self-diagnosis of theimmobiliser

Test requirements:♦Test fuse on the basis of the current flowdiagram to ensure o.k.♦Connect vehicle system tester V.A.G 1552⇒ page 90-3.♦Switch off ignition for about 30 seconds andthen switch on again.

Notes:♦If no readout appears on the display, testvoltage supply for V.A.G 1552 on the basisof the current flow diagram.♦Additional operator information can bedisplayed by pressing the HELP key of thefault reader.

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Interior Lights/Bulbs/Switches / Anti-Theft Protection 96

Edition 09.96

♦ Move forward in the programme by pressingthe → key.

♦ An incorrect entry can be ended by pressingthe key C.

Readout in display:

Note:

As the immobiliser control unit is integrated inthe dash panel insert, it is necessary to use thecommon address word for the dash panel insert.

- Press keys 1 and 7 and confirm entry withthe key Q.

Note:

If the address word “25” (immobiliser) is entered,reference is made in the display to the commonaddress word “17” for dash panel insert andimmobiliser.

Readout in display:

- Wait about 5 seconds.

The following readout appears after about 5seconds:

♦ 1U1919033C: number of dash panelinsert

♦ A+-COMBIINSTR: component designation

♦ VDO: manufacturer’s identification(UN4 = Nippon Seiki, VD0 = VDO)

♦ V06: software version of dash panel insert(readout V07 also possible)

♦ Coding 02142: coding of dash panelinsert

♦ WSC xxxxx: workshop code

- Press → key.

Readout in display:

♦ SKZ7Z062000222: 14-position identificationnumber of immobiliser control unit

- Press → key.

Test of vehicle systems HELPEnter address word XX

Please enter address 17 →1U1919033C A+-KOMBIINSTR VDO V06→Coding 02142 WSC xxxxx

IMMO-IDENTNO: SKZ7Z062000222→

Page 258: _Octavia 1U - Electrical System

96 Interior Lights/Bulbs/Switches / Anti-Theft Protection

Edition 09.96

Test of vehicle systems HELPControl unit does not answer!

Test of vehicle systems HELPFault in communication build-up

Test of vehicle systems HELPK wire not switching to earth

Test of vehicle systems HELPK wire not switching to positive

Test of vehicle systems HELPSelect function XX

Test of vehicle systems HELPSelect function XX

If one of the following messages appears in thedisplay, carry out fault finding according to FaultFinding Programme Diagnostic Wiring.

⇒ Current Flow Diagrams, Electrical FaultFinding and Fitting Locations binder

1U1919033C A+-KOMBIINSTR VDO V06 →

Coding 02142 WSC xxxxx

Readout in display:

- A list of the possible functions is displayedafter pressing the HELP key.

The following functions are possible:

01 - Interrogating control unit version⇒ page 96-4.

02 - Interrogating fault memory ⇒ page 96-5.

05 - Erasing fault memory ⇒ page 96-7.

06 - Ending output ⇒ page 96-8.

08 - Reading measured value block⇒ page 96-8.

10 - Adaptation ⇒ page 96-10.

Interrogating control unit version

Readout in display:

- Press keys 0 and 1 (the function “Interrogatecontrol unit version” is selected with 01) andconfirm entry with the key Q.

The following readout appears after about 5seconds:♦1U1919033C: number of dash panel insert♦A+-COMBIINSTR: component designation♦VDO: manufacturer’s identification

(UN4 = Nippon Seiki, VD0 = VDO)

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Edition 09.96

No fault recognized! →

♦V06: software version of dash panel insert(readout V01 also possible)♦Coding 02142: coding of dash panelinsert♦WSC xxxxx: workshop code

- Press → key.

Readout in display:♦SKZ7Z062000222: 14-position identificationnumber of immobiliser control unit

Interrogating fault memory

Note:

The fault information displayed is not updatedconstantly but only with initiating self-diagnosisor with the function 05 “Erase fault memory”.

Readout in display:

- Press keys 0 and 2 (the function “Interrogatefault memory” is selected with 02) andconfirm entry with the key Q.

The number of stored faults appears in thedisplay.

The stored faults are displayed one after theother.

- Take the fault printed out and refer to thefault table and rectify fault ⇒ page 96-6.

If “No fault recognized” is displayed, theprogramme returns to the initial position afterthe → key is pressed.

Readout in display:

If a different readout appears in the display:⇒Operating instructions of fault reader

- End output (function 06) ⇒ page 96-8

IMMO-IDENTNO: SKZ7Z062000222 →

Test of vehicle systems HELPSelect function XX

X faults recognized!

Test of vehicle systems HELPSelect function XX

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96 Interior Lights/Bulbs/Switches - Anti-Theft Alarm

Edition 08.96

Fault table for immobiliser

Notes:

♦ All the possible faults which can be recognised by theimmobiliser control unit and displayed on V.A.G 1552,are listed below according to the 5-digit fault code.

♦ Before replacing components which are indicated asfaulty, first of all test the wiring and plug connections tothese components and also the earth connections onthe basis of the current flow diagram.

♦ After carrying out repairs, always once again interrogatethe fault memory with the vehicle system tester V.A.G1552 and erase the memory.

♦ All the static and sporadic faults are stored in the faultmemory:A fault is recognised as static if it exists for at least 2seconds. If the fault no longer occurs after this, it isstored as a sporadic fault. In this case “/SP” appears inthe right of the display.

♦ After switching on the ignition, all the faults which arestored are set to sporadic faults and they are only storedas static faults if they continue to exist after the check.

♦ If a sporadic fault no longer occurs during the next 50drive cycles (ignition on for at least 5 minutes, vehiclespeed >30 km/h), the fault is erased.

Readout on V.A.G 1552 Possible cause of fault Rectifying faults

01128

Reader coil for immobiliser -D2 Connector not plugged in at controlunit or reader coil and cable faulty.

Immobiliser control unit faulty.

- Inspect plug connection and readercoil and cable (visual inspection);replace reader coil if necessary⇒ Replacing reader coil.

- Erase fault memory and interro-gate once again ⇒ page 96-5 andpage 96-7; replace dash panelinsert if necessary ⇒ page 90-29.

01176

Key

Signal too small Reader coil or cable faulty (contactresistance/loose contact).

Electronics in ignition key (transponder)missing or not operating.

- Inspect reader coil and cable andplug connection (visual inspection);replace reader coil if necessary⇒ Replacing reader coil.

- Replace ignition key and re-adaptall ignition keys and check opera-tion ⇒ page 96-11.

01176

Key

not authorised Mechanically matched ignition key notadapted.

- Re-adapt all ignition keys andcheck operation ⇒ page 96-11.

Page 261: _Octavia 1U - Electrical System

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Page 262: _Octavia 1U - Electrical System

96 Interior Lights/Bulbs/Switches - Anti-Theft Alarm

Edition 08.96

Readout on display:

Notes:

♦ If this message appears on the display, thetest sequence was not carried out properly.

♦ If this message appears on the display, thetest sequence was not carried out properly.

♦ Adhere exactly to the test sequence: first ofall interrogate fault memory, rectify any faultswhich are stored, and then erase memory.

Ending output

- Press keys 0 and 6. (The function “Endoutput” is selected with 06.)

Readout on display:

- Confirm entry with the key Q.

Readout on display:

- Switch off ignition.

- Unplug connectors to the vehicle systemtester V.A.G 1552.

Reading measured value block

Readout on display:

- Press keys 0 and 8 and confirm entry withthe key Q.

Readout on display:

- Enter display group number (from table⇒ page 96-9) and confirm entry with the keyQ.

What is now displayed is the measured valueblock selected in a standardised form.

Test of vehicle systems HELPSelect function XX

Attention!Fault memory was not interrogated

Test of vehicle systems →

Fault memory was not interrogated

Test of vehicle systems Q06 End output

Test of vehicle systems HELPEnter address word XX

Test of vehicle systems HELPSelect function XX

Read measured value block HELPEnter display group number XXX

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Interior Lights/Bulbs/Switches - Anti-Theft Alarm 96

Edition 08.96

List of display groups

Display group Readout on displaynumber

020 1 = Ident number 1st and 2nd place2 = Ident number 3rd and 4th place3 = Ident number 5th and 6th place4 = Ident number 7th and 8th place

021 1 = Ident number 9th and 10thplace

2 = Ident number 11th and 12thplace

3 = Ident number 13th and 14thplace

4 = vacant measured value block

022 1 = Starting authorised2 = Engine control unit answers3 = Key status o.k.4 = vacant measured value block

Measured value block 020

Read measured value block 20 →

AU Z7 Z0 T1

Readout on display

Ident number 7th and 8th place

Ident number 5th and 6th place

Ident number 3rd and 4th place

Ident number 1st and 2nd place

Measured value block 021

Read measured value block 21 →

00 00 71

Readout on display

vacant measured value block

Ident number 13th and 14th place

Ident number 11th and 12th place

Ident number 9th and 10th place

Page 264: _Octavia 1U - Electrical System

96 Interior Lights/Bulbs/Switches - Anti-Theft Alarm

Edition 08.96

vacant measured value block

Key status o.k.• 1 = yes• 0 = no, i.e. the car key is not/incorrectly adapted or the transponder

is faulty

Engine control unit answers*• 1 = yes• 0 = no, i.e. there is a fault in the engine control unit or in the cable connection

Start authorised• 1 = yes• 0 = no, i.e. the car key is not/incorrectly adapted or the engine control unit is incorrectly coded or

faulty

Measured value block 022

Read measured value block 22 →1 1 1

Readout on display

*) Depending on the engine control unit, the measured value block is in the position “0 = Engine control unit answersno” for 10 ... 30 seconds after engine and ignition off, in other words the engine control unit is not activated and nofault exists. As a security measure, once again start self-diagnosis ⇒ page 96-2.

Adaptation

The function adaptation makes it possible tocarry out and store the following changes:♦Adaptation of car keys ⇒ page 96-11.♦Adaptation after replacing the engine control

unit ⇒ page 96-16.♦Adaptation after replacing the immobilisercontrol unit ⇒ page 96-18.

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Test of vehicle systems HELPSelect function XX

Adaptation of car keys

Notes:

♦ If new or additional ignition keys are required,these have to be adapted to the immobilisercontrol unit.

♦ Pay attention to the procedure when replac-ing the lock set, the reader coil and theimmobiliser control unit ⇒ Procedure whenreplacing lock set or immobiliser control unit.

♦ It is always necessary to re-adapt all theignition keys, in other words including theexisting ones.

♦ If it is not possible to adapt all the keys, e.g.during a holiday trip, the customer has to beadvised to have this done subsequently athis ŠKODA dealer in his home country.

♦ The number of already adapted keys isdisplayed after selecting the functionAdaptation.

♦ Adaptation can be interrupted by pressingthe key “C” on V.A.G 1552.

Requirements

♦ All ignition keys are available. If no old ignitionkey is available ⇒ “Procedure in the eventof loss of a key” page 96-16

♦ Key fob with concealed secret number isavailable; if not, ⇒ “Determining secretnumber”, page 96-16

- Insert old (authorised) ignition key into theignition lock.

- Connect vehicle system tester V.A.G 1552and initiate self-diagnosis of immobiliser byselecting the address word “17”⇒ page 96-2.

After the control unit identification is displayed:

- Press the → key.

- Readout on display:

- Press key 1 twice (the function “Loginprocedure” is selected with 11) and confirmentry with the key Q.

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96 Interior Lights/Bulbs/Switches/Anti-Theft Alarm

Edition 12.98

Readout in display:

- Enter the code and insert a 0 before the 4digit number (e.g. 01915).

The code can be found on the keyring pendantand can be made visible after carefully scratch-ing the protective coating (e.g. with a coin).

Note:

If the keyring pendant only has a 2 or 3 digitcode complete the entry with noughts, e.g. 344= 00344.

- Confirm entry with key Q.

Readout in display:

Note:

Briefly appears on display:

♦ Code is not accepted. Repeat entry.

♦ 2 attempts at correct entry of code are im-mediately possible, for the 3rd attempt youmust wait 35 minutes, if the ignition remainson and you quit self-diagnosis via function06 ‘End Output’.

Warning!

Readout in display:

If this is displayed during the login procedurethe code was repeatedly entered erroneously(e.g. incorrect code).

Note:

♦ After three incorrect entries the control unitis locked. The readout on the odometer inthe dash panel insert is ‘FAIL’.

♦ The next attempt can only be made after atleast 10 minutes, if the ignition remains onand you quit self-diagnosis via function 06‘End Output’. This delay is doubled for threefurther false attempts.

Login - ProcedureEnter code number XXXXX

Test of vehicle systems HELPSelect function XX

Tester sends address word 17

Function unknown or unable →to execute function

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Edition 08.96

- Press keys 1 and 0 (the function “Adaptation”is selected with 10) and confirm entry withthe key Q.

Readout on display:

- Press keys 2 and 1. (“Channel 21” is selectedwith 21.)

- Confirm entry with the key Q.

If the following readout appears on the display:

- Repeat adaptation by entering the secretnumber.

Readout on display:

The readout in the top line indicates that 2ignition keys have been adapted to the system.

- Press the → key.

Readout on display:

- Press key 0 four times and then enter thenumber of all ignition keys to be adapted,including the existing keys (e.g. 00003); max.8 keys are possible.

- Confirm entry with the key Q.

Readout on display if 3 ignition keys to beadapted:

- Confirm entry with the key Q.

Readout on display:

- Confirm entry with the key Q.

Readout on display:

- Press the → key.

- Press keys 0 and 6. (The function “Endoutput” is selected with 06.)

The key in the ignition lock is now adapted.

- Insert the next key into the ignition lock andswitch on ignition for at least 1 second.

AdaptationEnter channel number XX

Function is unknown or cannot be carried →out at the moment

Channel 21 Adaptation 2 →⟨↑↓⟩Channel 21 Adaptation 2 →Enter adaptation value XXXXX

Channel 21 Adaptation 3 Q⟨↑↓⟩Channel 21 Adaptation 3 QStore changed value?

Channel 21 Adaptation 3 →Changed value is stored

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96 Interior Lights/Bulbs/Switches - Anti-Theft Alarm

Edition 08.96

- Repeat the procedure until all the keys havebeen adapted.

Note:

♦ Do not exceed a time of 30 seconds foradapting all the keys; the time is not register-ed when ignition is switched off.

- Select function 02 “Interrogate fault memory”.If no fault is stored, the function “Key adapt-ation” has been successfully completed.

After each successful login function, theimmobiliser is not activated for 10 minutes, inother words it is not practical to carry out asystem or operational check during this time.

Note:

It is also possible to enter the number of keys tobe adapted by using the ↑

key (to reduce numberof keys) and the ↓ key (to increase number ofkeys).

Readout on display:

The readout in the top line indicates that 2ignition keys have been adapted to the system.

- Reduce the number of keys by pressing the↑ key or increase the number by pressing

the ↓ key, e.g. to 3.

Readout on display if 3 ignition keys to beadapted:

- Confirm entry with the key Q.

Readout on display:

- Confirm entry with the key Q.

Readout on display:

- Press the → key.

- Press keys 0 and 6. (The function “Endoutput” is selected with 06.)

The key in the ignition lock is now adapted.

- Insert the next key into the ignition lock andswitch on ignition for at least 1 second.

Channel 21 Adaptation 2 →⟨↑↓⟩Channel 21 Adaptation 3 Q⟨↑↓⟩Channel 21 Adaptation 3 QStore changed value?

Channel 21 Adaptation 3 →

Changed value is stored

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Edition 08.96

- Repeat procedure until all the keys havebeen adapted.

Note:

♦ Do not exceed a time of 30 seconds whenadapting all the keys; the time is notregistered when the ignition is switched off.

- Select function 02 “Interrogate fault memory”.If not fault is stored, the function “Key adapta-tion” has then been successfully completed.

The following fault messages are the result ofthe adaptation procedure and should be ignored:

Readout on display (ignore readout).

Readout on display (ignore readout).

Readout on display (ignore readout).

The fault “Key not authorised” is displayed duringthe entire adaptation operation as starting of theengine is not authorised during adaptation.

Adaptation of the ignition keys is automaticallyended if:

♦ the number of adapted keys is reached,

♦ the ignition is again switched on with a keyalready adapted and remains switched onfor longer than 1 second (fault is stored),

♦ the permissible adaptation time of 30seconds, counting from the moment theignition is switched on with the 2nd key, isexceeded (fault is stored),

♦ a fault is stored during adaptation of theignition keys.

Data transfer error

Rapid data transfer QTester sends address word 25

Key not authorised

Page 270: _Octavia 1U - Electrical System

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Page 271: _Octavia 1U - Electrical System

Interior Lights/Bulbs/Switches - Anti-Theft Alarm 96

Edition 08.96

- Insert old (authorised) ignition key into theignition lock.

- Connect vehicle system tester V.A.G 1552and initiate self-diagnosis of immobiliser byselecting the address word “17”⇒ page 96-2.

After the control unit identification is displayed:

- Press the → key.

Readout on display:

- Press keys 1 and 0 (the function “Adaptation”is selected with 10) and confirm entry withthe key Q.

Readout on display:

- Press key 0 twice. (“Channel 0” is selectedwith 00.)

- Confirm entry with the key Q.

Readout on display:

- Confirm entry with the key Q.

Readout on display:

- Press the → key.

Readout on display:

- End output (function 06) ⇒ page 96-8.

Note:

The identifier of the engine control unit is storedin the immobiliser control unit and the enginecan be started.

Test of vehicle systems HELPSelect function XX

AdaptationEnter channel number XX

Adaptation QErase learned value?

Adaptation →

Learned values are erased

Test of vehicle systems HELPSelect function XX

Page 272: _Octavia 1U - Electrical System

96 Interior Lights/Bulbs/Switches/Anti-Theft Protection

Edition 01.98

Adaptation after replacingimmobiliser control unit

Notes:

♦ The immobiliser control unit is integrated inthe dash panel insert, in other words whenreplacing the dash panel insert the immo-biliser control unit is also replaced.

♦ After replacing the dash panel insert, carryout the following steps:

- Carry out adaptation after replacing enginecontrol unit ⇒ page 96-16.

- Carry out adaptation of car keys⇒ page 96-11.

Emergency start function withV.A.G 1552

The emergency start function makes it possibleto disconnect the locked immobiliser of a carwhich has broken down and to drive the car tothe nearest Škoda dealer under its own power.

Note:

This emergency start function can be used toimmediately cancel any lockout time which mayhave been activated as a result of faulty orincorrect use of the emergency start functionwithout V.A.G 1552.

Requirements

♦ The customer should provide proof of owner-ship or use of the vehicle by presenting thevehicle registration papers and an ID.

♦ Vehicle system tester V.A.G 1552.

♦ Key fob with concealed secret number isavailable; if not, refer to „Determining thesecret number“ ⇒ page 96-16.

- Connect vehicle system tester V.A.G 1552and initiate self-diagnosis of immobiliser withthe address word „17“ ⇒ page 96-2.

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Edition 12.98

Login - ProcedureEnter code number XXXXX

Test of vehicle systems HELPSelect function XX

Test of vehicle systems HELPSelect function XX

Tester sends address word 25

After display of the control unit identification.

- → Press key.

Readout in display:

- Press key 1 twice (‘Login - Procedure’ func-tion is selected with 11) and confirm entrywith key Q.

Readout in display:

- Enter the code and insert a 0 before the 4digit number (e.g. 01915).

The code can be found on the keyring pendantand can be made visible after carefully scratch-ing the protective coating (e.g. with a coin).

Note:

If the keyring pendant only has a 2 or 3 digitcode complete the entry with noughts, e.g. 344= 00344.

- Confirm entry with key Q.

Readout in display:

Note:

Briefly appears on display:♦Code is not accepted. Repeat entry.♦2 attempts at correct entry of code are im-mediately possible, for the 3rd attempt youmust wait 10 minutes, if the ignition remainson and you quit self-diagnosis via function06 ‘End Output’.

- End output (Function 06) ⇒ Page 90-10

- Start engine again.

Notes:♦If the emergency start attempt is successfulit is possible to restart the engine at all timesduring a period of 45 minutes given a closedS contact.♦If the S contact is opened, i.e. when the igni-tion key is removed, it is only possible to startthe engine after 10 minutes.

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Emergency start function withoutV.A.G 1552

The emergency start function enables a carwhich cannot be started because the immobili-ser is blocked, to be deactivated and to drivethe car under its own power to its nearestŠKODA dealer.

Note:

This emergency start function makes it possibleto immediately cancel any possible blocking timewhich has been activated as a result of faulty orincorrect use of the emergency start functionwith V.A.G 1552.

Requirements

♦ The customer has to present the vehicleregistration papers or ID to show that he isthe authorised user or owner of the vehicle.

♦ Key fob with concealed secret number isavailable; if not ⇒ “Determining secretnumber”, page 96-16.

- Switch on ignition.

- At the same time turn the knob for settingthe time on the dash panel insert and pressthe reset button of the trip counter.

The following readout appears on the display ofthe trip counter:“0 0 0 0” and the first digit flashes.

It is now possible to change the first digit from 0to 9 using the reset button of the trip counter.

- Press the reset button of the trip counter asoften as necessary until the valid first digit ofthe secret number is displayed, e.g. 5.

The following readout appears on the display ofthe trip counter:“5 0 0 0”

- Turn the knob for setting the time.

The following readout appears on the display ofthe trip counter:“5 0 0 0'” and the second digit flashes.

- Press the rest button of the trip counter asoften as necessary until the valid second digitof the secret number is displayed, e.g. 3.

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Edition 08.96

The following readout appears on the display ofthe trip counter:“5 3 0 0”

- Turn the knob for setting the time.

The following readout appears on the display ofthe trip counter:“5 3 0 0” and the third digit flashes.

- Press the reset button of the trip counter asoften as necessary until the valid third digitof the secret number is displayed, e.g. 4.

The following readout appears on the display ofthe trip counter:“5 3 4 0”

- Turn the knob for setting the time.

The following readout appears on the display ofthe trip counter:“5 3 4 0” and the forth digit flashes.

- Press the reset button of the trip counter asoften as necessary until the valid forth digitof the secret number is displayed, e.g. 9.

The following readout appears on the display ofthe trip counter:“5 3 4 9”

- Turn the knob for setting the time on the dashpanel insert and at the same time press thereset button of the trip counter.

The trip counter readout again appears on thedisplay of the trip counter.

The immobiliser warning light goes out once thevalid secret number has been entered.

- Switch off the ignition and then start theengine.

Notes:

♦ If the secret number is incorrectly enteredthree times, the control unit is blocked. “FAIL”appears on the display of the trip counter inthe dash panel insert.

♦ It is then necessary to wait at least 10minutes before the next attempt if the ignitionremains switched on constantly during thistime. This time is doubled for each additionalthree incorrect attempts.

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96 Interior Lights/Bulbs/Switches / Anti-Theft Protection

Edition 09.96

♦ If no button/knob is operated for longer than30 seconds during the entry procedure, theemergency start attempt is aborted.

♦ If the emergency start attempt has beensuccessfully carried out, the engine canalways be started again during 45 minuteswith the S contact closed.

♦ If the S contact is opened, i.e. the ignitionkey is withdrawn, the engine can only bestarted within 10 minutes.

Faulty transponder and/or loss ofkey

♦ The transponder is integrated in the car key.

♦ If the transponder is faulty or if a key hasbeen lost, it is then necessary to replace thecomplete set of car keys.

- Make or order replacement key with in-tegrated transponder on the basis of the locknumber.

- Carry out adaptation of all the car keys⇒ page 96-11.

Replacing reader coil

♦ The reader coil is an integral part of the lockcylinder and cannot be replaced separately.

♦ The reader coil should be replaced togetherwith the lock cylinder.

♦ In order to restore mobility as rapidly aspossible, carry out the following procedure:

- Remove lock cylinder for steering/starter lock⇒ page 94-13.

- Install replacement lock cylinder with any locknumber and do not adapt door locks.

Note:

The customer has to operate the car with twocar keys during the delivery period.

Page 277: _Octavia 1U - Electrical System

Interior Lights/Bulbs/Switches / Anti-Theft Protection 96

Edition 09.96

- After the lock cylinder has been received,replace the substitute lock cylinder with theordered lock cylinder for the specific carmodel.

Procedure if replacing set of locksor immobiliser control unit

Note:

To ensure subsequent identification of theimmobiliser, it is essential to carry out thefollowing steps when replacing the set of locksor the immobiliser control unit.

1. 2-part sticker of lock set

Note:

The stickers on the key fob of the new lock setare used for identifying the mechanical lockingsystem.

- Separate right-hand sticker -2- (with barcode), detach from key fob of the new lockset and destroy.

- Pull the remaining left-hand sticker -1-(without bar code) of the new key fob andstick it onto the customer’s key fob in placeof the previous left-hand sticker.

The identification on the customer’s key fob istherefore updated:

♦ Left-hand sticker -1- (new) - mechanical locksystem

♦ Right-hand sticker - immobiliser control unit

Page 278: _Octavia 1U - Electrical System

96 Interior Lights/Bulbs/Switches / Anti-Theft Protection

Edition 09.96

2. 3-part sticker of immobiliser control unitin dash panel insert

- Pull off large sticker -1- (with bar code) andsmall sticker at bottom left -3- (blackconcealed panel) off the new dash panelinsert and separate. Destroy large sticker -1-(with bar code).

- Affix small sticker -3- (black concealed panel)onto the customer’s key fob and place onthe previous right-hand sticker.

The identification on the customer’s key fob isthus updated:

♦ Left sticker - mechanical lock system

♦ Right sticker -3- (new) - immobiliser controlunit

System test

Note:

After each successful login function, theimmobiliser is disabled for 10 minutes, i.e. it isnot sensible to carry out a system of operationaltest during this time.

- Ignition should be “Off” for at least 30seconds.

- Cover over reader coil with a metal plate withslot, e.g. place a suitable washer onto theignition lock and insert ignition key throughthe hole into the ignition lock.

or

Separate electric cable of reader coil atconnector between ignition/starter switch andimmobiliser control unit.

- Start engine.

The engine must not run and the indicator lampshould flash.

Page 279: _Octavia 1U - Electrical System

Interior Lights/Bulbs/Switches / Anti-Theft Protection 96

Edition 09.96

- Initiate self-diagnosis of immobiliser ⇒ page96-2.

- Interrogate fault memory ⇒ page 96-5:

One of the two following fault messages appearsin the display:

Readout in display:

or

Readout i-n display:

- Erase fault memory ⇒ page 96-7.

KeySignal too small

Immobiliser reader coil -D2

Page 280: _Octavia 1U - Electrical System

96 Interior Lights/Bulbs/Switches / Anti-Theft Protection

Edition 09.96

Servicing switches

Important!

Before carrying out any work on the electricalsystem, disconnect earth strap of the battery.

Removing and installing switchesin centre console

Removing:

- Unclip trim panel -1- around the centreconsole.

- Use a small screwdriver to carefully lever therelevant switch from the left out of the centreconsole.

- Then, pull the switch out fully and unplug theconnector.

Installing:

- Plug in connector.

- Press switch into mount in the centre consoleand lock in position.

- Clip trim panel in place.

Removing and installing lightswitch

Removing:

- Press the light switch -1- and turn at the sametime to the right -2-.

- Hold the switch in this position and pull thelight switch housing out to the front -3-.

- Separate the electric connector at the switch.

Installing:

- Plug in connector.

- Carefully push light switch into the openinguntil the switch is heard to lock in place.

Page 281: _Octavia 1U - Electrical System

Interior Lights/Bulbs/Switches/Anti-Theft Alarm 96

Edition 03.00

Removing and installing adjusterfor headlamp range control

Removing:

- Remove light switch from the cover.

- Unclip cover with adjuster for headlamprange control.

- Separate plug connection.

- Press together the two metal clips -1- andpull adjuster -2- out in direction of arrow.

Installing:

- Fit together plug connection.

- Insert adjuster for headlamp range controlinto guide ridges in cover and press in as faras the stop.

- Press in light switch with cover and lock inplace.

Removing and installing door con-tact switch

The door contact switch is located in the doorlock and cannot be replaced separately if faulty.

- Removing door lock and replacing⇒ Body Fitting Work; Repair Group 57; Front

Door; Repair Group 58; Rear Door.

Removing and installing slidingroof switch and interior light

Models up to 7.99

Removing

- Use special tool 3409 to lever off interior light.

- Separate the two electrical plug connections.

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Page 283: _Octavia 1U - Electrical System

Interior Lights/Bulbs/Switches/Anti-Theft Alarm 96

Edition 12.98

Removing and installing switchesfor power windows

Removing

- Unclip the plastic cover (handle) -1- andswitch cover -2-.

- Unscrew the 3 cross-recessed screws -ar-row-.

- Carefully lift out the switch combination withcover and at the rear unlock the plug andremove.

- Remove the switch combination.

Installing

- Carry our installation in the same way in re-verse order.

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96 Interior Lights/Bulbs/Switches/Anti-Theft Alarm

Edition 12.98

Servicing interior lights

Removing and installing glove boxlight

Removing

- With a slotted-head screwdriver reach be-hind the scattering glass and carefully lift thelight out.

- Draw out the scattering glass with bulbholder.

- Replace the 12 V, 5 W bulb.

Installing

- Insert the scattering glass with bulb holderin the glove box and lock into place.

Removing and installing the rearreading lights

Removing

- With a slotted-head screwdriver reach be-hind the light and carefully lift the light out.

- Unplug the connector.

- Replace the 12 V, 5 W bulb.

Installing

- Carry out installation in the same way in re-verse order.

Removing and installing front ash-tray light

Removing

- Remove the ashtray and its housing.⇒ Body Fitting Work; Repair Group 68; Trays,

trim panels and screens.

- Carefully unclip bulb holder -2- from the ash-tray housing -1-.

- Unplug the connector.

Installing

- Carry out installation in the same way in re-verse order.

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Page 286: _Octavia 1U - Electrical System

Page 287: _Octavia 1U - Electrical System

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Page 289: _Octavia 1U - Electrical System

Interior Lights/Bulbs/Switches/Anti-Theft Alarm 96

Edition 12.98

Removing and installingswitch for remote release offuel filler flap

Warning!

Disconnect earth strap of battery before perform-ing any work on the electrical system.

Notes:

♦ Before disconnecting the battery, determinethe code number of a radio set fitted withanti-theft coding.

♦ When the battery is re-connected, check thevehicle equipment:- Carry out coding of radio- Reset time of clock- Initialise power windows.

⇒ Inspection and Maintenance

Removing Version 1:

- Carefully unclip switch for remote release offuel filler flap -arrows- and lift up.

- Separate electrical plug connection at theswitch.

Installing

- Carry out installation in the same way in re-verse order.

Removing Version 2:

- Carefully lift the switch for remote release offuel filler flap with a small screwdriver fromthe dash panel centre part.

- Separate electrical plug connection at theswitch.

Installing

- Carry out installation in the same way in re-verse order.

Page 290: _Octavia 1U - Electrical System

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Page 291: _Octavia 1U - Electrical System

Interior Lights/Bulbs/Switches/Anti-Theft Alarm 96

Edition 03.99

Notes:

♦ Before disconnecting the battery, determinethe code number of a radio set fitted withanti-theft coding.

♦ When the battery is re-connected, check thevehicle equipment:- Carry out coding of radio- Reset time of clock- Initialise power windows.

⇒ Inspection and Maintenance

Removing

- Remove the trim panel of the dash panel in-sert.

- Remove the front ashtray.

- Remove the Climatronic control unit -E87-and separate the plug connections.

- Separate the plug connection of the sensor-1-.

- Take out the two screws -2- and remove thesensor.

Installing

- Installation is carried out in the same way inthe reverse order.

Sensor for interior monitoring-G273-

Removing and installing

Warning!

Disconnect earth strap of battery before perform-ing any work on the electrical system.

Page 292: _Octavia 1U - Electrical System

96 Interior Lights/Bulbs/Switches/Anti-Theft Alarm

Edition 03.99

Testing

The operation of the sensor for interior monitor-ing can be tested by the service sector and bythe customer.

- Open the window of the driver’s door slightlyto enable you to insert your arm.

- Lock the vehicle with the key or remote con-trol.

- Wait about 2 minutes until the alarm systemhas been armed (recognizable from the slowflashing of the red warning light in the driv-er’s door).

- Now insert your arm through the opened win-dow of the driver’s door into the interior.The alarm system must be activated imme-diately (hazard warning lights and alarmhorn).

- Switch off the alarm by unlocking the vehi-cle.

Regulating the sensitivity

The sensor for interior monitoring is equippedwith a regulator for altering the response sensi-tivity.

The sensor is factory-set to an average sensi-tivity. The sensitivity can be altered by the serv-ice sector at the customer’s request:

- Carry out the first 3 steps of removing thesensor ⇒ page 96-35.

- Use a suitable screwdriver to now alter thesetting of the trimming potentiometer „sens.“in the direction + (increases sensitivity) or inthe direction - (delays sensitivity).

- Carry out an operational check.

Page 293: _Octavia 1U - Electrical System

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Page 294: _Octavia 1U - Electrical System

96 Interior Lights/Bulbs/Switches/Anti-Theft Protection

Edition 03.02

Self-diagnosis of immobilisergeneration 2 MY 01

Applies to 1.6-ltr./74 kW; 2.0-ltr/85 kW (APK,AEG, AQY); 1.8-ltr./110 kW EU3D (AGU) en-gines.

Procedure for self-diagnosis identical for gen-eration 1 ⇒ page 96-1 - except function 08.

Function 08 „Read measured value block“ isidentical to that of generation 3 ⇒ page 96-40.

Self-diagnosis of immobilisergeneration 3 MY 01

Applies to 1.4-ltr./55 kW; 1.6-ltr./75 kW; 2.0-ltr/85 kW (AZH, AZJ); 1.8-ltr./110 kW EU3 and EU4(ARX, AUM); 1.8-ltr./132 kW engines.

The electronic immobiliser consists of:♦a control unit integrated in the dash panelinsert♦an adapted engine control unit♦a reader coil at the ignition lock♦adapted ignition keys with electronics♦a warning light in the dash panel insert

Conducting self-diagnosis of im-mobiliser

Special tools, testers and aids required♦Vehicle system tester V.A.G 1552♦Diagnostic cable V.A.G 1551/3, 3A, 3B or 3C

Test requirements

Fuses o.k. according to CFD

Battery voltage at least 11.5 V

All electrical components switched off

Connecting vehicle system tester V.A.G 1552

The diagnostic connection is located in the stow-age compartment on the driver side.

- Connect vehicle system tester V.A.G 1552with the appropriate cable.

- Switch ignition on.

Page 295: _Octavia 1U - Electrical System

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Page 304: _Octavia 1U - Electrical System
Page 305: _Octavia 1U - Electrical System

Wiring 97

Edition 08.96

Relay holder, fuse holder

Important!

Disconnect battery earth strap before carrying outany work on the electrical system.

Removing and installing relay holderand auxiliary relay holder

Removing:

Note:

The auxiliary relay holder -A- is not fitted asgeneral equipment, but only if the correspondingoptional equipment is installed.

- Remove cover at bottom left⇒ General Body Repairs, repair group 70

- Slacken both securing screws -C- (2 Nm)and, as appropriate, slacken all screwconnections -D-.

- Pull out relays and control units and thenunclip the appropriate relay carrier.

- Take off relay holder -B- and auxiliary relayholder -A- downward.

Installing:

- Carry out installation by adopting the sameprocedure in the reverse order.

Note:

Always refer to the valid current flow diagramfor the assignment of the relay holder and ofthe auxiliary relay holder.⇒ Current Flow Diagrams, Electrical Fault

Finding and Fitting Locations

Page 306: _Octavia 1U - Electrical System

97 Wiring

Edition 08.96

Removing and installing fuse holder

Removing:

- Carefully lever off the side cover on the left-hand side of the dash panel.

- Unscrew both securing bolts -B- (2 Nm) andthen press catch -C- and pull out fuse holder-A- to the rear.

Installing:

- Carry out installation by adopting the sameprocedure in the reverse order.

Note:

Always refer to the valid current flow diagramfor the assignment of the fuse holder.⇒ Current Flow Diagrams, Electrical Fault

Finding and Fitting Locations.

Page 307: _Octavia 1U - Electrical System

Wiring 97

Edition 09.96

Important electrical contactassignments and plugconnections

Important!

Before carrying out any work on the electricalsystem, disconnect earth strap of the battery.

Connector station A pillar

Connector station A pillar - driver side

The connector station is located in the leftfootwell below the footwell trim panel.

1 - Central locking, brown

2 - Electric mirror adjustment, blue

3 - Radio and power windows, centrallocking, black

Connector station A pillar - passenger side

The connector station is located in the rightfootwell below the footwell trim panel.

1 - Central locking, brown

2 - Electric mirror adjustment, blue

3 - Radio and power windows, centrallocking, black

Main fuse box

The main fuse box is positioned on the batteryin the engine compartment.

- Removing and installing ⇒ page 27-4.

Note:

Refer to the relevant current flow diagram forthe contact assignment⇒ Current Flow Diagrams, Electrical Fault

Finding and Fitting Locations

Page 308: _Octavia 1U - Electrical System