vwusa.com vw mk5 jetta electricalsystem ssp 873403

Self-Study ProgramCourse Number 873403

The new JettaElectrical SystemDesign and Function

Volkswagen of America, Inc.Volkswagen AcademyPrinted in U.S.A.Printed 12/2004Course Number 891403

©2004 Volkswagen of America, Inc.

All rights reserved. All information containedin this manual is based on the latestinformation available at the time of printingand is subject to the copyright and otherintellectual property rights of Volkswagen ofAmerica, Inc., its affiliated companies and itslicensors. All rights are reserved to makechanges at any time without notice. No partof this document may be reproduced,stored in a retrieval system, or transmitted inany form or by any means, electronic,mechanical, photocopying, recording orotherwise, nor may these materials bemodified or reposted to other sites withoutthe prior expressed written permission ofthe publisher.

All requests for permission to copy andredistribute information should be referredto Volkswagen of America, Inc.

Always check Technical Bulletins and the latestelectronic repair information for informationthat may supersede any information includedin this booklet.

Trademarks: All brand names and productnames used in this manual are trade names,service marks, trademarks, or registeredtrademarks; and are the property of theirrespective owners.

i

Table of Contents

Important/Note!

New!

This Self-Study Program covers the electrical system of thenew Jetta!

This Self-Study Program is not a Repair Manual. This

information will not be updated.

For testing, adjustment and repair procedures, always referto the latest electronic service information.

Introduction ................................................................................1

Course Introduction, Electrical System Fuses and Relays,Communication Network, Drivetrain CAN-bus ControlModules, Convenience CAN-bus Control Modules,Infotainment CAN-bus Control Modules, Instrument Clusterand Diagnostic CAN-bus Control Modules

LIN Bus ......................................................................................14

LIN Bus

Power Supply ...........................................................................16

Electrical Box, Relay Carrier, Fuse Box, Data Bus On BoardDiagnostic Interface J533, Transport Mode, Vehicle ElectricalSystem Control Module J519, Exterior Light Control,Convenience Lighting, Windshield Wiper System, HeadlightWasher System, Windshield Washer Quick Disconnect/LockSystem, Instrument Cluster Control Module J285, Anti-TheftImmobilizer Control Module J362, Warning Lights in theInstrument Cluster, Comfort System Central Control ModuleJ393

Convenience and Safety Systems ..........................................41

Personalization, Accessing Programming Menus, Radios,Antennas, Multi-Function Steering Wheel, Headliner PrintedCircuits, Tamper-Proof Guard

1

Introduction

Course Introduction

The new Jetta makes extensive use ofcontrol modules and networking usingmultiple Controller Area Network (CAN)buses. Signals are transmitted digitally fromone control module to another on eachCAN-bus, eliminating the need for aseparate wire for each signal. The use ofCAN-bus communication for controls andaccessories reduces the wires needed inthe vehicle.

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This Self-Study Program covers the newJetta’s electrical system. This program alsodescribes the new control modules, thenetworking of various body electricalsystems, and the various CAN-bussystems.

2

Introduction

Electrical System Fuses and Relays

Locations

The electrical system on the new Jetta isentirely redesigned. Because of this, themounting location of fuse and relay centershave changed.

The adjacent diagram shows the variouslocations.

Fuse and relay center underthe hood on the driverside

Back-up fuse box under thehood on the driverside

Fuse box behind the instrumentcluster

3

Introduction

Relay carrier of on board powersupply control module, on leftunder the instrument cluster

Relay carrier below the instrumentcluster on the driverside, abovethe on board power supply controlmodule

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4

Introduction

Communication Network

Overview of Networked Control Modules

To allow communication between thecontrol modules without interference, theyare connected by several data bus systems.

The Data Bus On Board DiagnosticInterface J533 (Gateway) allowscommunication between the following databuses:• Drivetrain CAN-bus

• Convenience CAN-bus

• Infotainment CAN-bus

• Instrument cluster CAN-bus

• Diagnosis CAN-bus

In addition to the CAN-bus, someelectric componentscommunicate through the LINbus.

Key

D Ignition/Starter SwitchE221 Control Module in Steering WheelG85 Steering Angle SensorG397 Rain/Light Recognition SensorH8 Alarm HornJ104 ABS Control ModuleJ136 Memory Seat/Steering Column

Adjustment Control ModuleJ217 Transmission Control Module (TCM)J220 Motronic Engine Control ModuleJ234 Airbag Control ModuleJ255 Climatronic Control ModuleJ285 Instrument Cluster Control ModuleJ334 Anti-Theft Engine Disable Control ModuleJ364 Auxiliary Heater Control ModuleJ386 Driver's Door Control ModuleJ387 Front Passenger's Door Control ModuleJ388 Left Rear Door Control ModuleJ389 Right Rear Door Control ModuleJ393 Comfort System Central Control ModuleJ400 Wiper Motor Control ModuleJ431 Headlamp Range Control ModuleJ446 Parking Aid Control ModuleJ500 Power Steering Control ModuleJ503 Radio/Navigation Display Control ModuleJ519 Vehicle Electrical System Control ModuleJ525 Digital Sound System Control ModuleJ527 Steering Column Electronic Systems

Control ModuleJ533 Data Bus On Board Diagnostic InterfaceJ587 Selector Lever Sensor System Control

Module*J604 Auxiliary Air Heater Control ModuleJ743* Direct Shift Gearbox (DSG) MechatronicR RadioT16 16-Pin Connector*On direct shift gearboxes only

5

Introduction

Engine Control Module J220

DSG Mechatronics

J743

ABS CM J104

Selector Lever CM J587

Power Steering CM J500

Headlamp Range

CM J431

Data Bus On Board Diagnostic Interface J533

Navigation CM J503/Radio R

SAT Radio

Digital Sound System CM J525

Auxiliary Heater CM J364*

Alarm Horn H8

Wiper Motor CM J400

Auxiliary Air Heater

CM J604*

Right Rear Door CM J389

Front Passenger

Door CM J387

Driver's Door CM J386

Left Rear Door CM J388

Climatronic CM J255

Memory Seat/ Steering CM J136

Instrument Cluster CM J285

Anti-Theft Engine Disable (Immobilizer IV) CM J334

Vehicle Electrical CM J519

Airbag CM J234

Steering Wheel

CM E221

Parking Aid CM J446

Steering Angle Sensor G85

Steering Column Electronic Systems

CM J527

Ignition/Starter Switch D

Rain/Light Recognition Sensor G397

Comfort System Central

CM J393

Transmission CM J217

* May not be available on North American market vehicles

16-PinConnector

T16

Drivetrain CAN-bus

ConvenienceCAN-bus

Infotainment CAN-bus

LIN Bus

Instrument ClusterCAN-bus

Diagnosis CAN-bus

CAN-busWire

CommunicationsLine

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6

Introduction

Drivetrain CAN-bus ControlModules

Control Module Locations

The adjacent illustration shows the controlmodules of the Drivetrain CAN-bus andtheir locations.

The data transfer rate is 500 kbit/s. The datais transferred through the CAN high wire(orange/black) and CAN low wire(orange/brown). To ensure reliablecommunication without conflict orinterference, the CAN wires are twistedtogether.

Steering Column ElectronicSystems Control Module J527,beneath steering column switch

Motronic EngineControl Module (ECM)J220, under plenumchamber cover

Data Bus On BoardDiagnostic Interface J533beneath instrument cluster,above accelerator pedal

Transmission ControlModule (TCM) J217, onleft inside wheel housing

7

Introduction

ABS Control Module J104on the right side of thebulkhead in the enginecompartment

Airbag Control Module J234,beneath center console infront of tunnel

Headlamp RangeControl Module J431on the right side of theglove compartment(Bi-Xenon only)

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8

Introduction

Climatronic ControlModule J255 incenter console

Steering Column ElectronicSystems Control ModuleJ527, beneath steeringcolumn switch

Data Bus On Board DiagnosticInterface J533 beneath theinstrument cluster, aboveaccelerator pedal

Vehicle Electrical SystemControl Module J519 underthe instrument cluster, onrelay carrier

Convenience CAN-bus ControlModules


The adjacent illustration shows the controlmodules of the Convenience CAN-bus andtheir locations.

The data transfer rate is 100 kbit/s. The datais transferred through the CAN high wire(orange/green) and the CAN low wire(orange/brown). To ensure reliablecommunication without conflict orinterference, the CAN wires are twistedtogether.

9

Introduction

Comfort System Central ControlModule J393 on right sidebeneath the instrument cluster,behind glove compartment

Door Control Modules J386,J387, J388, J389, installedin respective doors

Parking AidControl ModuleJ446 in rear rightside panel

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10

Introduction

Infotainment CAN-bus ControlModules


The adjacent illustration shows the controlmodules of the Infotainment CAN-bus andtheir locations.

The Infotainment CAN-bus transfer rate is100 kbit/s. The data is transferred throughthe CAN-bus high wire (orange/purple) andthe CAN-bus low wire (orange/brown). Toensure reliable communication withoutconflict or interference, the CAN-bus wiresare twisted together. Radio/Navigation Display

Control Module J503(for 2006 model year) orRadio R, in center console

CD Changer R41 in centerconsole, beneath frontarmrest

11

Introduction

Operator Electronics andTelephone Control Module J412under right front seat, beneathcarpet covering on right sill panel(delayed introduction)

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12

Introduction

Instrument Cluster and DiagnosisCAN-bus Control Modules

Instrument Cluster CAN-bus

Information is exchanged between theInstrument Cluster Control Module J285and the Data Bus On Board DiagnosticInterface J533 via the instrument clusterCAN-bus. These are the only controlmodules in this data bus system.

Diagnosis CAN-bus

The transfer of data between the VAS5051/5052 scan tool and Data Bus OnBoard Diagnostic Interface J533 is throughthe diagnosis CAN-bus.

Data Transfer Rate

The transfer rate for both CAN-buses is 500kbit/s.

Instrument Cluster ControlModule J285

16-Pin Connector T16 on leftside, beneath instrumentcluster

13

Introduction

Data Bus On Board DiagnosticInterface J533 beneath theinstrument cluster, aboveaccelerator pedal

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14

LIN Bus

Components in a LIN bus system include amaster control module and up to 16 slavecontrol modules. All communication isinitiated by the master control module.Slave control modules cannot communicateindependently.

Several independent LIN buses withdifferent functions operate in the vehicle.Information is exchanged betweenindividual bus systems by the mastercontrol modules that are connected to theCAN-bus.

Key

E221 Control Module in Steering WheelG397 Rain/Light Recognition SensorH8 Alarm HornJ393 Comfort System Central Control Module

LIN Bus System

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J400 Wiper Motor Control ModuleJ519 Vehicle Electrical System Control ModuleJ527 Steering Column Electronic Systems Control

Module

J400

J519

J527

G397

E221 J393

H8

LIN Bus

The Local Interconnect Network (LIN) is asub-bus system that includes all associatedcomponents within a specific area.• The local sub-system is a cost effective

version of the CAN-bus

• The specified component interfaceallows easy exchange of the connectors

• Bus connection in crash area

• Bus connection in critical safety areas

15

LIN Bus

Master Control Module

The master control module, which isconnected to the CAN-bus, controls the LINbus system.

Primary Functions

• Conversion of local data bus informationto data format of CAN-bus

• Monitoring of data bus conversion andrate of data transfer

• Control of data transfer cycle

• Transfer of diagnostic data from slavecontrol modules

Slave Control Module

In the LIN bus system, individual controlmodules, sensors or actuators can act asslave control modules.

The electronics integrated in the controlmodules evaluate the information, convertit into digital information and send it, oncethe request has been made, through theLIN bus to the master control module.

Data commands are sent to the actuatorsby the master control module through theLIN bus.

After interrogating the master controlmodule, sensors send status information tothe master control module and perform atarget/reference comparison.

The comfort system central control module below shows the wiring of the LIN andCAN-buses.

CAN-bus Wires

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LIN Bus Wires

16

Power Supply

Electrical Box

Fuses for components in the enginecompartment and the vehicle’s interior arelocated in the electrical box.

The distance between the electrical boxand the battery is approximately 1.6 ft.(500mm). This allows the battery tofunction as a high frequency filter betweencomponents that are mounted directly onthe electrical box.

The increased number of fuses allows therating of the fuses to be set to theindividual components.

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Location

The electrical and back-up fuse boxes arelocated in a housing within the enginecompartment.

17

Power Supply

Electrical Box

In addition to the fuses, the following relaysare also located in the electrical box:• Voltage Supply Terminal 15 (B+) Relay

J329

• Power Supply (Terminal 30, B+) RelayJ317

• Power Supply Relay (Terminal 50) J682

• Fuel Pump (FP) Relay J17 (except FSI)

Back-up Fuse Box

The back-up fuse box contains fuses for:• Alternator

• Electro-mechanical power steering

• Radiator fan

• Power supply from terminal X

• Auxiliary heater

• Terminal 30

S319_010

S319_009

18

Power Supply

Relay Carrier

Location

The relay carrier and the supply controlmodule are located on the driverside underthe instrument cluster.

Relay Carrier

Additional relays may be included on therelay carrier depending on equipmentoptions.

On vehicles with power seat adjustment,the automatic safety device (thermal safety)is installed on the relay carrier.

Supply Control Module Relay Carrier

The following relays are located on thesupply control module relay carrier:• Power supply relay terminal 30G

• Voltage Supply Terminal 15 (B+) RelayJ329

• Power Supply Relay 1 (Terminal 75) J680

• Rear Window Defogger Relay J9

• Horn Relay J413

• Dual Washer Pump Relay 1 J729

• Dual Washer Pump Relay 2 J730

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S319_065

19

Power Supply

Fuse Box

Location

The fuse box is located on the driverside ofthe instrument cluster behind a cover.

Fuses

The fuse box contains fuses for theelectrical components of the vehicle.

Please refer to current servicerepair information for fuselocations.

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20

Power Supply

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Data Bus On Board DiagnosticInterface J533

Due to the complexity of vehicle functions,large amounts of data must be exchanged.To ensure optimal data exchange, severaldata bus systems are required.

The interface function that was previouslypart of the instrument cluster or supplycontrol module is now performed by J533.It forms the interface for data bus systemsthat are independent of each other andallows information to be exchanged withoutconflict or interference.

Location

J533 is located beneath the instrumentcluster, above the accelerator pedal.

DiagnosticConnection

Diagnostic CAN-bus

Data Bus On Board Diagnostic Interface J533

Instrument ClusterCAN-bus Instrument Cluster

DrivetrainCAN-bus

ConvenienceCAN-bus

InfotainmentCAN-bus

21

Power Supply

Master Functions

J533 manages the master functions of theterminal 15 run-on for the DrivetrainCAN-bus along with the sleep and wake-upmodes for the data bus systems.

Key

G85 Steering Angle SensorJ104 ABS Control ModuleJ217 Transmission Control Module (TCM)J220 Motronic Engine Control Module (ECM)

J271 Motronic Engine Control Module (ECM)Power Supply Relay

J500 Power Steering Control ModuleJ533 Data Bus On Board Diagnostic InterfaceJ587 Selector Lever Sensor System Control Module

S307_047

Drivetrain CAN-bus

Internally Switched Terminal 15

J587

J500

Term. 30 J271

J220

G85

J217 J104

J533

Terminal 15 Run-On

Some control modules on the CAN-busmust exchange information when terminal15 is off. When necessary, a message issent to the CAN-bus to enable the run-onmode. The control modules involved makea connection internally from terminal 30 toterminal 15, allowing them to communicate.The Power Steering Control Module J500,for example, can communicate with theother control modules.

The run-on mode can last between tenseconds and fifteen minutes. The run-onlength of time depends on the data beingtransferred.

The run-on period ends when J533 sendsthe sleep command.

Terminal 15 Run-On Control Modules

22

Power Supply

Data Bus Sleep and Wake-Up Modes

When all of the control modules on theconvenience and Infotainment CAN-busindicate that they are ready for stand-by, acontrol module gives the signal to 'sleep'.The voltage level of the low signal is12 volts and 0 volts for the high signal.

A control module also gives the wake-upsignal when the data bus requiresactivation, such as when the doors areunlocked.

Sleep Mode S307_048Wake-UpMode

Wake-Up Signal

The data bus on board diagnostic interfacemonitors the sleep function.

If the Drivetrain CAN-bus does not go intosleep mode, the Convenience andInfotainment CAN-buses will not go intosleep mode.

If the Convenience CAN-bus does not gointo sleep mode, the Infotainment CAN-buswill also not go into sleep mode.

23

Power Supply

Transport Mode

During transport to dealerships, powerconsumption is reduced to protect thebattery.

Activating the transport mode isolates thefollowing systems and components:• Radio

• Radio remote control

• LED indicator in door

• 30 second interior light switch-off delay

The transport mode is switched ON andOFF with the VAS 5051 scan tool throughthe vehicle’s self-diagnosis.

“Tra” shows in the odometer display of theinstrument cluster when transport mode isactive.

The transport mode is only available duringthe vehicle’s first 93 miles (150km). Afterreaching this mileage, the J533automatically switches transport mode OFF.Transport mode cannot be turned ON againafter 93 miles (150km) is reached.

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24

Power Supply

Relay Carrier

Vehicle Electrical SystemControl Module J519

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S307_017

Vehicle Electrical System ControlModule J519

Location

The Vehicle Electrical System ControlModule J519 is located under theinstrument cluster. It is attached to the relaycarrier.

25

Power Supply

Primary Functions

The vehicle electrical system controlmodule actuates and controls the followingfunctions:• Exterior light control and monitoring

– In the event of bulb failure, therelevant warning lamp will light or atext message will display in theinstrument cluster

• Convenience lighting:– Coming Home– Leaving Home– Instrument cluster backlight level

• Console lighting

• Windshield wipers– Directs CAN-bus signals from the

vehicle electrical system controlmodule to the wiper motor controlmodule

• Windshield washer pump

• Turn signal control

• Electric load management shut-offbelow 11.8 volts

Secondary Functions

The vehicle electrical system controlmodule also controls the followingfunctions:• Interior light control

– Terminal 30G determines whatvoltage is supplied to the interiorlights.

• Heated rear window– Via the heated rear window button

• Terminal activation– Terminal 75x is activated via an ‘X’

contact relief relay.– Terminal 15 is activated via voltage

supply terminal 15 (B+) relay in theelectrical box.

– Terminal 50 is activated via powersupply relay (terminal 50) in theelectrical box.

• Fuel pump readiness– The electric fuel pump is supplied

with power when the driver's door isopened. After the engine hasstarted, power is supplied from theMotronic engine control module.

26

Power Supply

Electrical Load Management

The electrical load management makessure that there is enough reserve electricalpower in the battery to start the engine.

If necessary, convenience system electricaldevices are deactivated withoutcompromising safety requirements.

The vehicle electrical system controlmodule monitors the engine speed, thebattery voltage and the alternator loadthrough the DF signal (dynamo field).

From this information and from informationabout which devices are on for shortperiods, the vehicle electrical systemcontrol module evaluates the power supplyload state.

Based on this evaluation, the vehicleelectrical system control module canincrease engine speed via the enginecontrol module or deactivate conveniencedevices.

Three load management operating modesare possible.

Operating Mode 1

Terminal 15 ON and alternator active

Management Activities

At a battery voltage below 12.7 volts, thevehicle electrical system control modulecommands an increase in the engine idlespeed.

At a battery voltage below 12.2 volts, thefollowing electrical devices are turned OFF:• Heated seats

• Heated windshield

• Heated exterior mirrors

• Steering wheel heating

• Footwell lighting

• Interior door handle lights

• Reduction and deactivation ofClimatronic

• Warning and deactivation ofInfotainment

27

Power Supply

Operating Mode 2

Terminal 15 ON and alternator inactive

Management Activity

At a battery voltage below 12.2 volts, thefollowing electrical devices are turned OFF:• Reduction and deactivation of air

conditioning


• Interior door handle lights

• Entry/exit lights

• Leaving home

• Warning and deactivation ofInfotainment

Operating Mode 3

Terminal 15 OFF and alternator inactive

Management Activity

At a battery voltage below 11.8 volts, thefollowing electrical devices are turned OFF:• Interior lights


• Inner door handle lights

• Entry/exit lights

• Leaving home

• Infotainment, e.g. radio

The primary differences of component orsystem deactivation in the various operatingmodes is the order in which they aredeactivated.

Operating mode 3 deactivates severalelectrical devices at once.

Deactivation is cancelled when theconditions for deactivation are no longerpresent.

When deactivation occurs,notification appears in theinstrument cluster display. A faultentry is also logged in theelectrical system control modulefault memory.

28

Power Supply

Exterior Light Control

Headlights

The twin headlights with low and highbeam reflectors are equipped with H7halogen bulbs as standard equipment.

To improve visibility for other drivers, theturn signals are located beneath theheadlights, providing a well-balanceddistribution of light from the turn signal.

On some vehicles, a combination of theBi-Xenon module, a high beam reflector,and H7 bulbs is an option.

Bi-Xenon equipped vehicles are alsoenhanced with a washer system anddynamic headlight range control.

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High BeamHeadlight

Turn SignalLight Low Beam

Headlight

Bulb Replacement with

One-Touch-System

The One-Touch-System allows both thecover and H7 bulbs to be removed with atwist motion. A guide assists withinstallation.

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29

Power Supply

Rear Lights

Available for the first time on the new Jettaare the split rear lights with roundelements.

The rear light unit, integrated into the sidepanel, provides the tail, brake, and turnsignal light functions.

An additional reverse light is located in thetrunk deck.

An auxiliary brake light is located in the rearwindow. Turn signals in the exterior mirrorscomplement the front and rear turn signals.They provide additional visual information toother drivers.

Light Switch

The rotary light switch is a semi-conductormodule that sends switch positioninformation to the vehicle electrical systemcontrol module.

The vehicle electrical system controlmodule controls all exterior light functions.

Advantages

• Elimination of voltage spikes in therotary light switch increases bulb life

Special Functions

• All bulbs are monitored for failure

• The bulb monitoring system informationis displayed in the instrument cluster

Reverse LightTaillight

Turn Signal Light

Taillight

Brake Light

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30

Power Supply

Convenience Lighting

Coming Home

When occupants exit the vehicle and closethe doors, including the trunk, the vehiclesurround lighting is activated for a shorttime.

Leaving Home

After the vehicle has been unlocked usingthe remote control key, the surroundlighting is turned ON for a short time.

After the convenience lightinghas turned OFF or beeninterrupted, the Coming Homefunction cannot be reactivateduntil the ignition is switched ON.

If the rotary light switch is in the “low beamposition,” the lights are switched OFFcompletely once the lighting period haselapsed.

If the rotary light switch is in the “side lightposition,” the side light bulbs remain ON foran additional time after the surroundlighting has turned OFF.

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Power Supply

The following lights are switched ON by theComing Home and Leaving Homefunctions:• Front side lights

• Low beam headlights

• Taillights

• License plate light

Activation or deactivation of thecoming and leaving homefunctions and the lighting periodsare set in the instrument clusterby accessing the “Light & Vision”MFI personalization menu.

High BeamHeadlight

Taillight

Low BeamHeadlightRunning

Light

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SideLight

32

Power Supply

Windshield Wiper System

Wiper Operation

The wiper system consists of a singlemotor with mechanical connections to thewiper arms.

The selected position of the WindshieldWiper Switch E is sent to the SteeringColumn Electronic Systems Control ModuleJ527 and relayed through the ConvenienceCAN-bus to the Vehicle Electrical SystemControl Module J519. The vehicle electricalsystem control module sends informationabout the selected wiper position throughthe LIN bus to the Wiper Motor ControlModule J400, which controls wiper action.

On vehicles with rain and light sensors, thewiper frequency is calculated in the rainsensor mode and sent to the wiper motorcontrol module.

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During intermittent operation, wipermovement is speed dependent and variesbetween 2 and 24 seconds.

The wiper control system can detect anobstruction and react according to thedegree of resistance. The wipers will try tomove the obstacle out of the way. If it stillhas not been removed after the fifthattempt, the wipers will stay in thatposition. Activation of the wipers after theobstacle has been removed isaccomplished by turning the switch ON.

Instead of rotating 360°, thewiper assembly reverses every150°. This allows a much smallerspace for wiper linkage.

33

Power Supply

J104

Key

D Ignition/Starter SwitchE Windshield Wiper SwitchF266 Front Hood SwitchG397 Rain/Light Recognition SensorJ104 ABS Control Module

S319_016

J400 Wiper Motor Control ModuleJ519 Vehicle Electrical System Control ModuleJ527 Steering Column Electronic Systems Control

ModuleJ533 Data Bus On Board Diagnostic Interface

Overview of Windshield Wiper System

J533

G397

F266

D

J527

E

J400

J519

34

Power Supply

Service/Winter Position

Moving the wiper switch to the “tipwiping” position (down) within 10 secondsof switching OFF the ignition causes thewipers to move to the end position of wipertravel known as the service/winter position.

When the wipers are in the service/winterposition, the wiper blades can be easilyreplaced or the wiper arms can be lifted toprevent the rubber from freezing to thewindshield.

The wipers will revert to the rest positionwhen the windshield wiper switch is turnedOFF and ON with the ignition ON or if thevehicle reaches a speed of 1.2 mph(two km/h).

When the vehicle is parked andthe hood is open, the wipers willnot operate.

Headlight Washer System

The headlight washer system (with optionalBi-Xenon headlamps) is activated by thevehicle electrical system control module aspart of the “wash/wipe” function.

Activation Conditions

• Ignition ON

• Side, low beam or assistant drivinglights ON

• Steering column switch in “wash/wipe”position

Headlight Wash Cycle

• Runs every fourth time the “wash/wipe”function is activated by the controlmodule

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35

Power Supply

Disengaged

S319_049

S319_066

ClipWasher Jet

Washer JetClip

Engaged

Windshield Washer QuickDisconnect/Lock System

Features

• Easy removal/assembly

• Improved longevity

• Improved anti-crimp and freezeprotection

• Convoluted-type tubes

The quick disconnect/lock system for thewindshield washer system is a new featureof the Jetta.

With this system, the windshield washerhoses are convoluted tubes that minimizethe chance of crimping.

The tube connections to the windshieldwasher pump and washer jets are securedby clips.

To disassemble, pull the clip outward byhand to allow hose removal.

To install, press the hose onto the openinguntil the clip engages automatically.

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Power Supply

Instrument Cluster Control ModuleJ285

J285 receives information through the DataBus On Board Diagnostic Interface J533and the instrument cluster CAN-bus.

Additional external sensor signals that aresent to the instrument cluster by separatewiring:• Oil Pressure Switch F1

• Brake Fluid Level Warning Switch F34

• Outside Air Temperature Sensor G17

• Engine Coolant Level (ECL) Sensor G32

• Windshield Washer Fluid Level SensorG33

• Left Front Brake Pad Wear Sensor G34

• Fuel Pump (FP) Control Module J538

Diagnosis

Diagnosis of J285 performed using thediagnosis tester VAS 5051/5052 throughthe CAN-bus.

J285 is also capable of self-monitoring. If afault occurs, the letters “def” will appear inthe instrument cluster display.

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Power Supply

Active Immobilizer

If the Immobilizer is active, it emits anaudible sound and a warning lightilluminates in the tachometer display.

Adaption channels and stored faults arehandled separately.

The Immobilizer address is word 25 fordiagnosis.

S319_051

Immobilizer Light

Anti-Theft Immobilizer ControlModule J362

Immobilizer IV

The Anti-Theft Immobilizer Control ModuleJ362 is integrated into the instrumentcluster control module. With the ignitionswitched ON, it enables or disables specificvehicle functions.

The only way to communicate with theImmobilizer is by using Guided Fault Findingin the VAS 5051 scan tool.

Diagnosis of the Immobilizercontrol module is performed viathe “Guided Fault Finding”function.

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Power Supply

Warning Lights in the InstrumentCluster

S319_017

Symbol Warning Light Indicator Warning Message or Description

Airbag Light Airbag faultAirbag belt tensioner deactivated

Electronic stabilization program (ESP) Light

Parking brake system Light Handbrake applied1 x audible warning

Electronic power steering (EPS) Light Low priority fault yellowHigh priority fault red

Oil pressure warning MFI Display Stop-Oil pressure turn engine OFFSee operating instruction3 x audible warnings

Electronic Power Control (EPC) Light

Preglow period (diesel engines only) Light

Low brake fluid level Flashing Stop-Brake fluidOperating instructions3 x audible warnings

Brake pad wear indicator MFI Display Check brake lining1 x audible warning

Anti-lock braking system (ABS) Light ABS

Electronic brake pressure Flashing 3 x audible warningsdistribution (EBD)

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Power Supply

Symbol Warning Light Indicator Warning Message or Description

Left turn signal Light Audible warning

Right turn signal Light Audible warning

High beam headlights Light

Cruise control system (CCS) Light

Bulb blown/driving light defective Light Example–Front right low beam headlight defective

Trunk/door open MFI Display Trunk open1 x audible warning

Fuel reserve low MFI Display Replenish fuel1 x audible warning

Coolant level low/coolant MFI Display Stop–check coolanttemperature high Operating instructions

3 x audible warnings

Alternator low voltage output Light

Engine check Light Engine fault serviceOnboard diagnosis (OBD) Exhaust emissions service

Hood open Light Door warning, hood, 1 x audible warningvehicle moving less than 3.7 mph (6 km/h)

Rear fog light Light

Oil level low Light Check oil levelOil sensor service1 x audible warning

Tire pressure low Light 1 x audible warning

Shift lock Light

Seat belt Light Please use seatbeltBelt warning alarm

Washer fluid low MFI Display Add washer fluid1 x audible warning

Anti-theft Immobilizer Flashing Immobilizer active1 x audible warning

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Power Supply

Comfort System Central ControlModule J393

Location

The Comfort System Central ControlModule J393 is located beneath theinstrument cluster, on the passenger sidebehind the glove compartment.

Functions

• Control of central locking

• Activation of rear door locks

• Activation of fuel tank door release

• Activation of trunk release

• Activation of anti-theft engine disable orImmobilizer alarm system via LIN bus

In earlier models, the mirrors werecontrolled via the comfort system centralcontrol module. The door control modulesnow control all systems in the door area,including the mirrors. This reduces electricalwiring.

S319_064

J393 is the master control module in theLIN bus. This control module initiates datatransfer for the anti-theft engine disable andImmobilizer alarm systems. Included in theanti-theft engine disable and Immobilizeralarm systems are interior monitoringsensors, smart alarms and the vehicleinclination sensor.

Depending on the model and options,some electrical components andconnectors may not be used in the comfortsystem central control module.

41

Convenience and Safety Systems

Personalization

The user-based settings for variousfunctions in the Convenience andInfotainment CAN-bus systems areselected by pressing the controls on theright windshield wiper stack whileobserving the MFI Menu options in theinstrument cluster display. Selections arestored in the control module, whichcontrols all functions.

J285

S319_067

Key

J285 Instrument Cluster Control ModuleJ393 Comfort System Central Control ModuleJ519 Vehicle Electrical System Control ModuleJ527 Steering Column Electronic Systems Control ModuleJ533 Data Bus On Board Diagnostic Interface

J527J533

J519 J393

Data transfers between the instrumentcluster control module and associatedcontrol modules is managed by theCAN-bus.

42


For detailed information onprogramming, please refer to theoperating instructions in thevehicle owner’s manual.

Accessing Programming Menus

The following procedure allows access tothe new Jetta’s convenience options usingthe multi-function indicator (MFI) switchlever.

To access the convenience menu:1. Press and hold the Up/Down Toggle

Switch in the “UP” or “DOWN” positionfor two seconds.

2. Use the Up/Down Toggle Switch tohighlight “Setup” and then press theOK/Reset switch to select it.

3. Toggle to “Convenience” and then pressthe OK/reset switch to select it. Fromthere, adjust the convenience settings.

OK/Reset SwitchUp/DownToggle Switch

Multi-FunctionIndicator (MFI)Switch Lever

Select

Select

S873403_26S873403_25

S873403_24

43


Radios

RCD 300 Radio System (Base Radio)

The RCD 300 radio is a standard radiosystem. It has the following features:• Two or four loudspeaker channels (each

20 W)

• RDS FM/AM

• Display of stored stations and RDSnames

• MP3 compatible

• FM-2 tuner

• Control by multi-function steering wheel(MFS) and multi-function display (MFD)

• Integrated single CD drive

• Controls for external 6 disc CD changer

• Telephone control (hands-free operation)

• GALA

• Self-diagnosis including speakerdiagnosis

• Transport Mode

S873403_30

Radio RCD 500 (Premium 7)

The top radio for the new Jetta is the RCD500 with the following functions:• Four speaker channels (20 W each)

• RDS FM/AM Radio (AM without LW)

• Display of stored stations with RDSnames

• MP3 compatible

• FM 2 diversity tuner

• Operation through multi-functionsteering wheel and multi-functiondisplay

• Integrated 6 disc CD changer


• GALA

• Model-specific sound adjustment

• SAT Optional Satellite Radio


• Transport mode

• Optional external sound amplifier

S873403_27

44


MFD 2 Radio Navigation System

(Delayed Introduction)

A radio system with an integratednavigation system will be available for the2006 model year. Features include:• Multi-color display (MCD)

• DVD-based system

• Four speaker channels (20 W each)

• RDS FM/AM Radio (AM without LW)

• Display of stored stations with RDSnames

• External diversity tuner

• Operation via multi-function steeringwheel and multi-function display


• GALA


S873403_32

45


Antennas

Jettas are equipped with different antennasystems depending on the optionsselected. Rear window antennas are notserviceable.

Radio RCD 300/RCD 500

The RCD 300 and RCD 500 radios areequipped with an internal diversity tuner(automatic selection between antennas).An external diversity tuner is not required.

Two rear window antennas are connectedto the radio. The radio automatically selectsthe antenna with the strongest signal.

S319_022

FM Circuit (-)

AntennaAmplifier

(ImpedanceTransformer)

AM Circuit

FM Circuit (+)

+ -

46


MFD 2 Radio Navigation System

The MFD 2 radio navigation system doesnot use an internal diversity tuner. The MFD2 uses an external tuner and two rearwindow antennas.

The MFD 2 radio navigation system uses ashark-fin type roof antenna.

AntennaSignal(Coax)

S873403_023

S319_023

FM Circuit (-)

AntennaAmplifier

(ImpedanceTransformer)

AM Circuit

FM Circuit (+)

+ -

ControlLine (Coax)

ExternalDiversity Tuner

47


Multi-Function Steering Wheel

System Overview

The multi-function steering wheelcommunicates with the steering columnswitch module through a LIN bus.

Communication from the steering columnelectronic systems control module to theon board diagnostic interface is through theCAN-bus, which passes these signals tothe desired control modules.

The multi-function steering wheel becomesactive when the ignition is turned ON.

E221

Key

E221 Control Module in Steering WheelJ285 Instrument Cluster Control ModuleJ412 Operating Electronics and Telephone Control

ModuleJ503 Radio/Navigation Display Control ModuleJ527 Steering Column Electronic Systems Control

ModuleJ533 Data Bus On Board Diagnostic InterfaceR RadioR66 Telephone/Navigation System (GPS)/

Auxiliary Heater Antenna

J285

J412

15

30

J527

J533

J503R

S319_019

48


Multi-Function Buttons

Button illumination is controlled by terminal58d.

Only one code is used to communicateinformation from the buttons, through thesteering column electronic systems controlmodule, to the CAN-bus. This means thatbuttons can only function one at a time.

If a telephone is not installed, thetelephone buttons are non-functional.

If after several minutes the system detectsa sticking button it will disable the function.All other buttons will remain functional.

S319_025

Switch to basic telephone menu,various sub functions, such ascaller list, make connection

Accept call, make call

DescriptionButton Symbol

Next track/start station search

Previous track/start stationsearch

Volume up

Volume down

Switch (mode) between FM/AMaudio sources, CD-changer and CD (radio)

Mute selection of audio sources

End call

+

–

49


Headliner Printed Circuits

An increase in headroom has beenachieved by using printed circuits. Routingof wire is eliminated because the printedcircuit wiring is attached to the headliner.Additional wire clips in the roof area are nolonger required.

Description

The printed circuit wiring connects the rearinterior light, the sun visor switch and thevanity mirror lighting to the vehicleelectrical system control module.

The central coupling point connection islocated on the front cross member, abovethe front interior light.

Headliner printed circuits are notserviceable. The printed circuitmust be replaced as a completeunit. Always refer to the latestservice repair information.

Front InteriorLight

S319_073

Rear Interior Light

Sun Visor SwitchConnection

Vanity MirrorLight Connection

Central CouplingPoint Connection

50


S319_055

Tamper-Proof Guard

A tamper-proof fastener protects the newJetta Motronic engine control module fromtampering and unauthorized data access.

This tamper-proof fastener secures aprotective cover over the main harnessconnector.

51

Notes

52

Knowledge Assessment

An on-line Knowledge Assessment (exam) is available for this Self-Study Program.

The Knowledge Assessment may or may not be required for Certification.

You can find this Knowledge Assessment at:

www.vwwebsource.com

From the vwwebsource.com Homepage:

– Click on the Certification tab

– Type the course number in the Search box

– Click “Go!” and wait until the screen refreshes

– Click “Start” to begin the Assessment

For Assistance, please call:

Certification Program Headquarters

1 – 877 – CU4 – CERT

(1 – 877 – 284 – 2378)

(8:00 a.m. to 8:00 p.m. EST)

Or, E-Mail:

[email protected]

Volkswagen of America, Inc.3800 Hamlin RoadAuburn Hills, MI 48326Printed in U.S.A.December, 2004