Related Manuals for Audi A4 2001
Summary of Contents for Audi A4 2001
- Page 1 Service. AUDI A4´01 - Technical Features Design and Function Self-study programme 254 For internal use only.
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Page 2: Table Of Contents
Advance by technology The new Audi A4, a vehicle which combines driving pleasure and good sense with the highest level of quality and sports styling. Control unit for vehicle electrical system ...48 New engine programme ...18 Electronic stability programme with brake assistance ...32... - Page 3 Electric logbook "Audi Logbook" ........
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Page 4: Introduction
A high degree of running smoothness is achieved via balancer shafts. Infinitely variable perfection For the first time in this vehicle class, Audi offers the infinitely variable "multitronic" automatic gearbox for all front-wheel drive versions. The new light alloy running gear With the four-link front axle, each wheel is controlled by four aluminium transverse links. - Page 5 High safety standards With a thoroughly optimised body design and comprehensive safety equipment, the new Audi A4 is able to comply with all current valid safety standards, throughout the world. Crash sensors for the front airbags integrated directly into the bumper bar, improve occu- pant protection.
- Page 6 Introduction Vehicle dimensions of Audi A4´01 106/110 1528 1526 1766 1937 445 L 2650 4527 1088 SSP254_051...
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Page 7: Aero-Floor
The aero-floor not only contributes to improved aero- The aero-floor was designed so as to guaran- dynamics. tee ground clearance and resistance to stone It was also possible to reduce the noise level impact and to prevent accumulation of dirt, by approx. -
Page 8: Body
Body Front impact design features The new Audi A4 is designed for optimal con- – the straightened longitudinal member with formance with current crash requirements crash-optimised octagonal cross-piece and safety standards. – the rigid and significantly wider bumper This could only be achieved by increasing the cross-piece body weight. - Page 9 Side impact design features In the floor area, the cell consists of three large tailored blanks, which ensure a stable connection between the front and rear of the vehicle. Weight-saving optimisation of deformation characteristics in the event of a side impact was achieved by the use of an aluminium extruded profile in the sill.
- Page 10 Body Doors The doors of the Audi A4 demonstrate a sig- nificantly increased rigidity due to the one- piece door shell construction. For the first time, a so-called spray-on noise insulation is used, which is sprayed on as required and allows weight reduction for the same effectiveness.
- Page 11 Emergency door locking In the event of failure of the central locking, e.g. due to power supply faults, each door can be individually locked without using the lock cylinder. Firstly, with the door open, the cap must be removed. Emergency locking is effected by inserting the ignition key.
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Page 12: Occupant Protection
Occupant protection Overview of system G 283 G 284 J162 K145 J220 AIRBAG J285/K75 J533 E224 AIRBAG AUS EIN N131 J393 J526 J234 N199 N200 G180 G179 N154 N153 N201 N202 N277 N278 G 256 G 257 SSP254_029... - Page 13 To complement the comprehensive body The system comprises driver/passenger air- modifications, occupant protection has been bags, front side airbags, optional rear side ® improved through the further development of airbags, SIDEGUARDS , three point front seat the familiar 8.4 airbag system. belts with ball tensioners and belt force limit- ers, three point rear outer seat belts, centre lap belt (for fixed rear seat bench), Isofix pre-...
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Page 14: Crash Sensors For Front Airbag
Occupant protection Crash sensors for front airbag G283, 284 Both sensors for front impact detection func- If a certain signal threshold is exceeded in the tion in conjunction with the crash sensor and front airbag crash sensor, a threshold reduc- the safe sensor which are integrated into the tion is activated in the airbag control unit, airbag control unit J234. - Page 15 Crash sensors for side airbags G179, 180, 256, 257 In order to trigger the components of the restraint system, two simultaneous impact detection signals are required for the plausi- bility check: – from both opposing crash sensors (B-pillar left with right and/or (C-pillar left with right) and –...
- Page 16 Occupant protection Deactivation of passenger airbag Deactivation of the passenger airbag is only possible via the key switch. In the Audi A4, the passenger's side airbag is also deactivated. Deactivation via the diagnostic tester is not possible. If a customer requires the deactivation func- tion where a key switch is not fitted, this can...
- Page 17 Crash signal processing There are two separate crash signal outputs: One crash signal is output via the conven- tional wiring and triggers the following func- tions: – Transmitting an emergency call via the control unit for telephone/telematics J526 (optional) – unlocking the vehicle, –...
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Page 18: New Engine Programme
Engine and gearbox Engine The 4-cylinder, 2.0 l engine provides high propulsive force due to the maximum torque of 195 Nm at 3300 rpm. Engine speed in rpm SSP254_038 SSP254_060 The 3,0 l V6 engine with five-valve cylinder head, produces162 kW (220 PS) at 6300 rpm from 2976 cm The maximum torque of 300 Nm is developed at 3200 rpm. -
Page 19: Innovations 2.5 L V6 Tdi Engine
Innovations 2.5 l V6 TDI engine SSP255_045 SSP255_039 Engine speed in rpm Technical data Capacity: 2496 cm Injection system: Bosch VE VP 44 S3.5 Bore: 78.3 mm Turbocharger: VNT 20 Stroke: 86.4 mm Exhaust emissions class: EU 3 Compression: 18.5 : 1 Consumption: urban 11.0 l/100 km... - Page 20 Engine and gearbox Injection pump VP 44 S3.5 Forced flush return Distributor bushing Distributor shaft Solenoid valve Supply piston Thermal shoulder Forced flush feed SSP255_040 The high pressure section of the injection In order to initiate pre-injection for cold and pump has been redesigned with regard to warm engines, the solenoid valve dynamics pressure levels and quicker solenoid valve...
- Page 21 Injector For the first time, an ICU injector ( I nverse C av- Due to the improved spray formation through ity U ndercut) is used, which has a dual needle the use of the ICU injector, it was possible to guide.
- Page 22 Engine and gearbox Charge air cooler Through duct Cooling duct section SSP255_043 The existing series connection of the two The charge air cooler design comprises two charge air coolers for the 110 kW engine is sections, in which part of the charge air is fed inadequate for the 132 kW engine with its via a through duct, connected to a space-sav- high air throughput.
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Page 23: Innovations - Automatic Gearbox
Innovations - automatic gearbox 5-speed 01V automatic gearbox The Audi A4 quattro MJ01 with 5-speed auto- matic gearbox features a new shift lever gate, together with a new shifting concept. The existing selector lever positions, 4,3,2 are discontinued and are replaced by the "S"... - Page 24 Engine and gearbox "multitronic" and 5-speed automatic gearbox SSP254_088 An innovation for all automatic gearboxes is Special feature: the "Tip in D " function. This means that the steering wheel "tiptronic" function is now The countdown from approx. 10 seconds to also available in selector lever position "D".
- Page 25 Notes...
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Page 26: Running Gear
Running gear Axles Four-link front axle The thorough further development of the light-weight construction resulted in a weight reduction of approx. 8.5 kg at the front axle. In addition to all transverse links, the pivot bearing is now also made of aluminium. The wheel bearing is attached to the pivot bearing via four bolts. -
Page 27: Trapezium Link Rear Axle
Trapezium link rear axle The rear axle design with largely identical Apart from the axle mounting, the two axle components is used in both the front-wheel versions differ only in the wheel carrier and drive as well as in the quattro versions. the wheel bearings. -
Page 28: Mechanical Unit Mountings
2 A newly designed three-point mechanical unit The additional cross member enables support mounting is used in the new Audi A4. over a longer lever arm, which positively influ- ences vibration and load cycle characteristics. The hydraulically damped engine mountings... -
Page 29: Brake System
Brake system The new Bosch ESP 5.7 is introduced in the Audi A4. The ESP 5.7 is distinguished by the following special features: – The hydraulic unit and control unit form a single unit. – The charging pump (actuation of ESP hydraulic pump V156) is discontinued. - Page 30 Running gear Single-stage ABS return pump Suction volumes Suction volumes SSP254_095 The graphic shows a comparison of the suction volumes of both pump versions. In the single-stage ABS return pump, the The suction pressure is correspondingly high entire suction volume must be drawn in and and increases with increasing viscosity.
- Page 31 Two-stage ABS return pump Working chamber 2 Suction volumes Working chamber 1 SSP254_096 The piston of the two-stage ABS return pump As the entire suction volume is supplied is stepped and has a double-acting function almost continuously, the maximum suction within two working chambers.
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Page 32: Electronic Stability Programme With Brake Assistance
Running gear Brake assistant Investigations in accident research have During emergency braking, the brake assist- shown, that the majority of drivers fail to ade- ant aids the driver by increasing the brake quately actuate the brakes in an emergency pressure automatically, to a level exceeding situation. - Page 33 The function of the brake assistant is sub-divided into 2 phases: • Phase 1 • Phase 2 If the pressure increase gradient exceeds a If the pressure determined by the driver falls specified value (emergency braking), the ABS below a certain value after triggering of the return pump and the relevant solenoid valve brake assistant, the system pressure is are activated by the ESP control unit and the...
- Page 34 Running gear Brake fluid reservoir The brake fluid reservoir is secured with an additional screw. The new maintenance opening in the brake fluid reservoir enables the extraction of brake fluid from both brake fluid chambers. The new brake filler and bleeder unit VAS 5234 must be used for this purpose.
- Page 35 Notes...
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Page 36: Electrical System
Electrical system Vehicle electrical system Chip card Control unit for headlamp reader R99 range control J431 Control unit for telematics J499 Control unit for mobile phone control electronics J412 Battery Control unit with display in dash panel insert J285 Front airbag crash sensor, passen- ger’s side G284 Control unit for... - Page 37 Side airbag crash sensor, passenger’s side G180 Door control units, passenger side J387 rear right, Side airbag crash sensor, rear optional J389 driver’s side G256 passenger’s side G257 Control unit for trailer recognition J345 Control unit for parking aid J446 Control unit for tyre pressure monitor J502...
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Page 38: Can Bus System
J507 J386 J387 J220 J389 J388 J217 J499 J526 J393 J104 J502 TRACK SEEK EJECT TUNE SCAN EJECT Audi symphony DOLBY SYSTEM BASS MIDDLE TREBLE BALANCE FADER PLAY TAPE RANDOM J234 J162 NOX sensor (USA only) J345 J446 J401 J527... - Page 39 CAN data bus The Audi A4 is equipped with a widely extended CAN data bus system. For communication between the installed control units and the diagnos- Due to the ever increasing number of control tic tester, two diagnosis wires (K and L) units installed in the vehicle and the associ- are available.
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Page 40: Dash Panel Insert
There are two dash panel insert versions: The dash panel insert of the new Audi A4 is equipped with – "lowline" – "highline" – the gateway for linking the three data bus systems: drive, convenience, information The "highline"... - Page 41 User prompt in the centre display via the con- trol switch in the centre console, is only avail- able in vehicles with – navigation system ("highline" version only) and/or – telematics and/or – auxiliary heater and/or – tyre pressure monitoring. The optional driver information system includes the following functions: –...
- Page 42 Convenience data Control unit for vehicle electrical system J519 SSP254_125 The Audi A4 quattro is equipped with two fuel gauge senders G and G169. Sender G registers the lower, and sender G169 the upper partial volume in the fuel tank.
- Page 43 Diagnostics Control unit with display unit in dash panel insert J285 Convenience data Control unit for steering column electronics J527 Terminal 15 Ignition lock D SSP254_138 The dash panel insert checks the plausibility – of both fuel gauge senders in quattro vehicles –...
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Page 44: Steering Column Switch Module
Electrical system Steering column switch module Due to the compact design of the newly developed steering column switch module, it was possible to minimise the amount of wir- ing necessary and the space requirements. Steering column A self-diagnosis facility for the steering col- electronics J527 umn switch is now available with new switch module. - Page 45 Ignition lock registration The signals from the terminals: – P parking light – 86s ignition key contact Wiper – 75 Load-reduction relay switch E – 15 ignition ON – 50 starter are transmitted to the steering column elec- tronics J527 via conventional wiring. The switch positions of the ignition lock are pre- pared by the electronics, supplied to the con- venience CAN bus and then transmitted via...
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Page 46: Function Circuit Diagram
Electrical system Functional diagram Steering column switch module (maximum equipment) Colour coding Components = Input signal Windscreen wiper switch = Output signal Turn signal switch CCS switch = Positive power supply E221 Operating unit in steering wheel Steering angle sender = Earth Horn actuation J234... - Page 47 S13/ E221 J453 J234 J527...
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Page 48: Control Unit For Vehicle Electrical System
Electrical system Control unit for vehicle electrical system J519 The control unit for vehicle electrical system The power connections for the individual con- J519 is the newly developed electronic central sumers are driven via semi-conductor ele- electrics and comprises a comprehensive ments, e.g. - Page 49 There are three control unit versions: – "lowline" for the standard version – "lowline" for vehicles with headlight washer system – "highline" for vehicles with driver informa- tion system The following functions are available with the The "highline" version implements the driver "lowline"...
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Page 50: Function Circuit Diagram For "Lowline" Version
Electrical system Functional diagram Control unit for vehicle electrical system J519 "lowline" version Components Pump for headlight washer conditioning system Light switch Servo motor for headlight range Hazard warning light switch control, left Brake light switch Servo motor for headlight range Reversing light switch control, right F216... - Page 51 L47 M17 M10 M2 M8 M7 M3 M32 M31 V49 J519 J345 L46 M16 M9 M4 M6 M5 M1 M30 M29 V48 J446 F216...
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Page 52: Function Circuit Diagram For "Highline" Version
Electrical system Functional diagram Control unit for vehicle electrical system J519 "highline" version Components Pump for headlight washer Light switch conditioning system Hazard warning light switch Servo motor for headlight range Brake light switch control, left F216 Contact switch for switchable Servo motor for headlight range rear fog lights control, right... - Page 53 L47M17M10 M2 M7 M3 M32 M31 V49 J519 J345 L46 M16 M9M4 M5 M1 M30 M29 V48 J446 F216...
- Page 54 Electrical system In the "highline" version of the vehicle electri- Rear lights on: cal system control unit, only the 21 watt Brake actuated filament of the two-phase bulb for the brake and rear light is used. Measuring equipment Recorder operation With lights switched on and non-actuated 5 V/Div.= 10 ms/Div.
- Page 55 Turn signal/hazard warning light control The functions: The hazard warning flasher signal is control- led separately by the vehicle electrical system – Anti-theft alarm flasher control unit, via the hazard warning flasher – Central locking system flasher when button. opening/closing If, during hazard warning flashing, the turn –...
- Page 56 Electrical system Wash/wipe system The wash/wipe system is equipped with the The windscreen wash/wipe relays are inte- speed-dependent 4-stage interval system. grated into the vehicle electrical system control unit J519. A new feature is the re-wipe function for the windscreen washer system. The washer fluid reservoir is a two-part Re-wiping occurs automatically 5 seconds design for easier removal and installation.
- Page 57 Control unit for trailer recognition J345 A separate control unit is required for trailer operation. This transmits the vehicle lighting system convenience CAN messages from the vehicle electrical system control unit to the trailer lights. A parallel link from the trailer socket to the vehicle wiring would result in fault detection via the microprocessor in the vehicle electrical system control unit.
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Page 58: Convenience System
Electrical system Convenience system The convenience system previously used in the Audi A2 is also used in the Audi A4. In the series version, the following additional In the basic version without rear electric win- functions dow lifters, central locking control of the rear doors is assumed by the central convenience –... - Page 59 Central convenience electronics (CCE) The following information and functions are processed in the central convenience electronics: Sensors Actuators Crash signal Fuel filler flap (from airbag control unit J234) – Motor for tank cap locking V155 Handbrake switch F9 Tailgate – Motor for tailgate release V139 Tailgate release –...
- Page 60 Electrical system Door control units The door control units integrated in the window lifter motors process the following signals: Sensors Actuators Window lifter switches Door locking and unlocking Enabling via the CCE Safe activation and deactivation of the doors Door lock feedback signal Activation of illumination in the –...
- Page 61 Mirror functions The mirror heating is switched on together with the – rear window heating – at an outside temperature of below 20 °C switches on automatically. When the mirror heating is switched on, the heating capacity is 100%. Then the heating is activated intermittently in accordance with SSP254_126 the ambient temperature and vehicle speed.
- Page 62 Central control unit for con- venience system J393 High and low pitched tones - air horn (sounder) SSP254_133 The Audi A4 convenience system is available Deactivation is performed by with – opening the vehicle via the radio remote – Anti-theft alarm control or –...
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Page 63: Anti-Theft Alarm System
An innovation in the anti-theft alarm is that a sounder with an integrated battery is fitted in place of the horn. This enables the alarm to sound even when the power supply has been interrupted. SSP254_134 The ultrasonic interior monitor and the tow- ing protection can be switched off from inside the passenger compartment by means of a switch. - Page 64 Electrical system Functional mechanism of inclination sender Towing protection is achieved by means of Variously arranged electrodes project into the inclination sender installed in the central this fluid. convenience electronics. Alternating fields are applied to the elec- trodes of the sender, which is divided into The functional mechanism of the inclination sub-compartments.
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Page 65: Radio - Chorus Ii, Concert Ii And Symphony Ii
Radio chorus II, concert II and symphony II In the new Audi A4, the new generation of radios, chorus II, concert II and symphony II are available as options. The following functions have been optimised: – AM has been extended to include long wave. - Page 66 Electrical system Radio chorus II New functions with respect to the predeces- sor model include: – Skip title function – Scan function – Dolby noise suppression in the cassette player as well as – a sorting function within a radio station family SSP254_009 in the convenience radio tuner search func-...
- Page 67 Radio symphony II A 6x CD changer as well as a cassette player are integrated in the symphony II radio. Searching for alternative frequencies is speeded up by the use of a second tuner. The second tuner also allows for Traffic Message Channel (TMC) evaluation in the background.
- Page 68 Electrical system Example: If the radio is switched on with the ignition key (S-contact) this requires the exchange of data between three control units: – Steering column electronics, – dash panel insert (gateway) and – radio. If the radio does not switch on, –...
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Page 69: Navigation Iv And Navigation Plus-D
Navigation IV and Navigation Plus-D The new Navigation System IV and Navigation System Plus-D are equipped with the dynamic routing system. The following traffic hold-ups are taken into account during route planning: – closed roads – tailbacks and – slow-moving traffic. The system’s sources of information are the traffic information from the radio stations via SSP254_129... - Page 70 Electrical system Within the menu structure of the navigation system, the driver is able to – switch the dynamic routing on and off, – select the source of traffic information, – manually exclude route sections from the TELE Menu route planning. For further information, please refer to the operating instructions.
- Page 71 Interface for Navigation Plus (R94) The interface of the Navigation System Plus performs the following tasks: – Exchange of data bus information - Navigation System Plus internal data bus – Transfer of TMC data to the Navigation System Plus for dynamic route planning In order to receive the TMC data, an interface connects the aerial and radio.
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Page 72: Multi-Communication Bar
Electrical system Multi-communication bar (MCB) The Audi A4 Saloon features the multi-com- munication bar in the top part of the rear win- dow for the first time. – aerial module, – aerial for navigation system (GPS),+ – and aerial for telephone (GSM) are fitted in the MCB. - Page 73 Television (TV) tuner The image and sound quality of each individ- ual tuner is monitored in the TV tuner. The tuner with the best reception is switched through to the operating unit. Thanks to the high speed, switching can be performed within a single scanning line.
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Page 74: Electric Logbook "Audi Logbook
Electrical system The electronic logbook, Audi Logbook The Audi Logbook is a fully automatic logbook which allows the customer to calculate business and private journeys in order to determine costs, e.g. for tax purposes. The Audi Logbook is only available in conjunction with Navigation Plus or Navigation IV. - Page 75 The ”continue journey” mode is used to pre- vent short breaks from being stored (e.g. refu- elling stops). Select purpose of journey: Back Operation and setting of the Audi Logbook is Business journey via the navigation system menu. Private journey The following options can be selected: Continue, business –...
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Page 76: Heater/Ac
Heater/AC Design and function The air conditioner represents a further devel- The redesigned system is based on the opment of the two-zone air conditioning performance data for top of the medium concept previously used in the A6. range vehicles, taking account of low system weight and energy consumption as well as, to an increasing extent, recycling capability. -
Page 77: 7-Piston Compressor
7-piston compressor SSP254_033 Two versions of externally controlled com- Distinguishing features to identify the com- pressors are used in the Audi A4: pressor fitted are: – the 6-piston compressor, which you have – Lettering on the compressor identification already studied in detail in SSP 240, plate is 6SEU for the 6-cylinder or 7SEU for –... -
Page 78: Air Conditioner
Heater/AC Air conditioner Flaps for Defrost flap control Central flap centre vent Temperature motor V107 Defrost control motor V70 sensor - fresh air flaps intake channel G89 Fresh air/air- Temperature flap (upper) flow flap Recircula- ted-air flap Air recirculation flap control Left temperature Right tempera- motor V113... -
Page 79: Glove Compartment Cooling
The basic functions of the air conditioner in the Audi A4 are based on the Audi A6 system and includes the following features: – Air-side separation for driver’s and passen- ger’s side. – The heat exchanger can be replaced with- out removing the air conditioner. -
Page 80: Solar Roof
Heater/AC Solar roof Solar generator Ventilation Air conditioner with control system Contacts SSP254_035 For the first time, the A4 can optionally be Significant advantages in comparison with equipped with the solar roof previously used vehicles without solar roof are: in the A8 and A6. The fresh air blower is continually driven by –... -
Page 81: Fresh Air Blower
Fresh air blower Control technology has been integrated in the In the case of malfunctions, such as e.g. a stiff new fresh air blower. or blocked blower, this is signalled to the operating and display unit E87 by duty cycle It includes the following features: changes based on the altered frequency. -
Page 82: Actuators/Sensors
Heater/AC Actuators/sensors Ambient temperature sensor Dash panel temperature sensor G56 Temperature selection in the air condi- tioner operating and display unit E87 Sender for footwell vent temperature, right, G262 Sender for footwell vent tempera- ture, left, G261 Vent temperature sender, right, G151 Vent temperature sender, left, G150 Fresh air intake temperature sensor G89... - Page 83 Automatic gearbox control unit J217 Motronic control unit J220 Control unit with display in dash panel insert J285 9:36 153.9 28.07.2000 5244 Diagnosis interface for data bus J533 (gateway) Diagnosis connection Radiator fan control unit J293 Control unit for air conditioner Radiator fan V7 Regulating valve for air con- ditioner compressor N280...
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Page 84: Functional Diagram For Fully Automatic Air Conditioner
Heater/AC Functional diagram for fully automatic air conditioner Components Solar cells Heated rear window Operating and display unit for Heated driver’s seat air conditioner Heated front passenger’s seat Driver’s seat temperature sensor Front passenger’s seat temperature sensor High-pressure sender Temperature sensor - fresh air intake- channel G107 Sunlight penetration photosensor... - Page 85 G238 V2/J126 G107 N280 G150 G151 t ° t ° t ° t ° t° t° t° t° G261 G262 G263 G112 G113 G135 G143 G220 G221 V107 V113 V158 V159...
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Page 86: Additional Heater
Flame sensor Fuel pump Fuel tank SSP254_023 The Audi A4 can optionally be equipped with an additional heater for coolant. Its mode of operation corresponds to the systems in use previously. The additional heater warms the heating- system heat exchanger in the air conditioner unit via the cooling-water circuit. - Page 88 All rights reserved, including the right to make technical changes. AUDI AG Dept. I/VK-5 D-85045 Ingolstadt Fax 0841/89-36367 040.2810.73.00 Technical status 10/00 Printed in Germany...