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- A4 2001
- Owner's Manual
Audi A4 2001 Owner's Manual
Summary of A4 2001
Page 1
Service. For internal use only. 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 audi a4´01 - technical features design and function self-study programme 254 254 254.
Page 2
2 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 steering colu...
Page 3: Contents
3 important: note new contents it is not intended as a workshop manual. The self-study programme will provide you with information on design and functions. For maintenance and repair operations it is essential that you refer to the current technical literature. Page introduction . . . . . . . . . . ...
Page 4: Introduction
4 introduction 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 architecture of motion performance and smooth running the engine programme of the new audi a4 includes t...
Page 5
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 protect...
Page 6: Introduction
6 977 1050 870 9 5 1 257 303 799 445 l 2650 1526 4527 1088 1937 1528 1766 901 106/110 921 976 976 471 1400 1357 1000 1628 vehicle dimensions of audi a4´01 introduction ssp254_051.
Page 7
7 the aero-floor not only contributes to improved aero- dynamics. It was also possible to reduce the noise level by approx. 3 db (a). The engine compartment noise insu- lation does not form part of the aero- floor. Part of the additional costs generated by the aero-floor could be compensated by disp...
Page 8: Body
8 body front impact design features – the straightened longitudinal member with crash-optimised octagonal cross-piece – the rigid and significantly wider bumper cross-piece – the integration of the member structures into the passenger cell – strength, rigidity and weight-optimised suspension strut c...
Page 9
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 alumini...
Page 10: Body
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. The newly ...
Page 11
11 luggage compartment lid the luggage compartment lid should always be operated via the radio remote control. The lock cylinder for the luggage compart- ment lid is integrated into the handle. Emergency door locking in the event of failure of the central locking, e.G. Due to power supply faults, ea...
Page 12: Occupant Protection
12 occupant protection overview of system g 256 n277 g179 g180 n153 k145 airbag off n95 n202 n154 n278 g 257 j533 n199 n201 j234 g 283 g 284 e224 aus ein airbag n131 n200 j393 j526 t16 j220 j162 j285/k75 ssp254_029.
Page 13
13 the system comprises driver/passenger air- bags, front side airbags, optional rear side airbags, sideguards ® , three point front seat 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- paration in rear...
Page 14: Occupant Protection
14 crash sensors for front airbag g283, 284 both sensors for front impact detection func- tion in conjunction with the crash sensor and the safe sensor which are integrated into the airbag control unit j234. D eceleration load time [ms] v ehicle rebound impact t rig gering of belt tensioners t rig g...
Page 15
15 re-encoding of the airbag control unit is no longer possible after the first crash data mes- sage is stored. Triggering is performed in two thresholds depending upon the deceleration value: – threshold 1 = belt tensioners only – threshold 2 = belt tensioners and airbag(s) crash sensors for side a...
Page 16: Occupant Protection
16 occupant protection front belt attachment belt lock and strap fastenings are perma- nently connected to the seat frame. Thus, in conjunction with the seat belt height adjuster, an optimal belt fitting can be achieved for each seat position. Deactivation of passenger airbag deactivation of the pas...
Page 17
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, – switch on...
Page 18: Engine and Gearbox
18 engine and gearbox with five-valve cylinder head, produces162 kw (220 ps) at 6300 rpm from 2976 cm 3 . The maximum torque of 300 nm is developed at 3200 rpm. Engine the 4-cylinder, 2.0 l engine provides high propulsive force due to the maximum torque of 195 nm at 3300 rpm. The 3,0 l v6 engine det...
Page 19
19 the injection system was modified in order to reduce exhaust gas and particle emissions. The main features of the basic engine are the same as those of the familiar v6 tdi engine with 132 kw (180 ps). Power output and torque curve values could be maintained under conditions which were well within...
Page 20: Engine and Gearbox
20 engine and gearbox in order to initiate pre-injection for cold and warm engines, the solenoid valve dynamics have been significantly increased. The associated increased heat generation in the solenoid valve, is compensated by improved fuel flow and optimal filling of the high pressure section is ...
Page 21
21 injector for the first time, an icu injector ( i nverse c av- ity u ndercut) is used, which has a dual needle guide. The advantage of this icu geometry is a sig- nificantly improved spray formation, espe- cially in the part throttle range for small injection quantities and short needle lift. Ssp2...
Page 22: Engine and Gearbox
22 the charge air cooler design comprises two sections, in which part of the charge air is fed via a through duct, connected to a space-sav- ing pipe, to the section of the other charge air cooler which is fitted with cooling fins. The rest of the charge air is fed directly through the cooling fins,...
Page 23
23 p r + n d s 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" posi...
Page 24: Engine and Gearbox
24 special feature: the countdown from approx. 10 seconds to return to normal automatic operation is inter- rupted, in the event that cornering is detected or the vehicle is in overrun operation. When normal driving conditions are detected again, the countdown recommences from approx. 10 seconds. An...
Page 25: Notes
25 notes.
Page 26: Running Gear
26 the suspension strut mounting is of the bulky rubber bearing construction. It consists of two functional components: – the inner part forms the connection to the piston rod. – the larger outer part provides for acoustic insulation of the shock absorber. Axles four-link front axle the thorough fur...
Page 27
27 the front-wheel drive version is fitted with a wheel bearing unit with integral wheel hub, which is mounted on a stub axle forged together with the wheel carrier. Trapezium link rear axle the rear axle design with largely identical components is used in both the front-wheel drive as well as in th...
Page 28: Running Gear
28 the additional cross member enables support over a longer lever arm, which positively influ- ences vibration and load cycle characteristics. The aluminium cross member is bolted to the body as well as to the rear subframe mount- ings and, in addition to its supporting func- tion for the gearbox m...
Page 29
29 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. – a brake assistant is included. H...
Page 30: Running Gear
30 ut ut ot ot ut ut ut ot ot ut running gear the graphic shows a comparison of the suction volumes of both pump versions. In the single-stage abs return pump, the entire suction volume must be drawn in and flow through the suction line during one piston stroke (piston stroke from tdc to bdc). The s...
Page 31
31 ut ut ot ot ut ut ot ot the piston of the two-stage abs return pump is stepped and has a double-acting function within two working chambers. Suction is effected in two stages; brake fluid being drawn through the suction line during each piston stroke. Function: if the piston moves from bdc to tdc...
Page 32: Running Gear
32 brake assistant investigations in accident research have shown, that the majority of drivers fail to ade- quately actuate the brakes in an emergency situation. This results in insufficient brake pressure being generated to achieve maximum vehicle deceleration. This lengthens the braking distance....
Page 33
33 • phase 2 if the pressure determined by the driver falls below a certain value after triggering of the brake assistant, the system pressure is restored to the pedal pressure determined by the driver. The function of the brake assistant is sub-divided into 2 phases: • phase 1 if the pressure incre...
Page 34: Running Gear
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 pur...
Page 35: Notes
35 notes.
Page 36: Electrical System
36 front airbag crash sen- sor, driver’s side g283 vehicle electrical system electrical system control unit for coolant fan, stage 1+2 j293 control unit for esp j104 control unit for telematics j499 control unit for mobile phone control electronics j412 front airbag crash sensor, passen- ger’s side ...
Page 37
37 side airbag crash sensor, driver’s side g179 control unit for parking aid j446 airbag control unit j234 side airbag crash sensor, rear driver’s side g256 passenger’s side g257 control unit for tyre pressure monitor j502 ssp254_008 door control units, passenger side j387 rear right, optional j389 ...
Page 38: Electrical System
38 electrical system nox sensor (usa only) diagnosis system can bus networking the ignition switch signals and the control buttons for multifunction and "tiptronic" steering wheel are registered via the steering column electronics. G85 j162 j502 r99 j401 gate- way j220 j234 j387 j386 j388 j389 j393 ...
Page 39
39 can data bus the audi a4 is equipped with a widely extended can data bus system. Due to the ever increasing number of control units installed in the vehicle and the associ- ated requirement for data exchange, the importance of the can data bus system increases significantly. For communication bet...
Page 40: Electrical System
40 electrical system setting buttons for digital clock, date and instrument illumination auto-check system call-up button for service interval indicator reset button for trip recorder dash panel insert there are two dash panel insert versions: – "lowline" – "highline" the "highline" version is equip...
Page 41
41 in order to ensure good signal reception for the radio clock, the receiver is installed in the rear bumper bar. 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 ...
Page 42: Electrical System
42 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. The signals from senders g and g169 are evaluated separately. The calculated litre values are then added and displayed. A new feature of...
Page 43
43 a further innovation is the display of the max- imum and minimum engine oil levels in the measured value block after the most recent service operation. The adaptation of the mileage/kilometre read- ing after replacement of the dash panel insert, is possible (several attempts) up to a recorded dis...
Page 44: Electrical System
44 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. A self-diagnosis facility for the steering col- umn switch is now available with...
Page 45
45 steering angle sender g85 the determination of steering angle is per- formed via optical elements in the steering column electronics j527 and is supplied to the drive can bus. The current steering angle position is thus made available to the esp control unit. The steering column switch module mus...
Page 46: Electrical System
46 auxiliary signals 1 can screen drive 2 emergency vehicle distress radio 3 emergency vehicle radio 4 cruise control system on/off 5 can low convenience 6 can high convenience 7 can low drive 8 can high drive 9 ignition lock terminal 75 10 ignition lock s contact 11 ignition lock terminal 15 12 ign...
Page 47
31 j527 31 s13/ 10a e e45 y x g85 j453 r/t j234 1 2 3 4 5 6 7 8 9 10 11 12 13 z x e2 e221 y z + z36 h in out.
Page 48: Electrical System
48 the control unit for vehicle electrical system j519 is the newly developed electronic central electrics and comprises a comprehensive self-diagnosis, which can be selected directly with address word 09. The control unit for vehicle electrical system receives the input signals from the conven- ien...
Page 49
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 "lowline" version: – wash/wipe control and interval – hazard ...
Page 50: Electrical System
50 auxiliary signals 1 can high convenience 2 can low convenience 3 terminal 75 4 not fitted with trailer coupling 5 only with trailer coupling 6 automatic gearbox "multitronic" 7 manual gearbox a u x y z electrical system "lowline" version components e1 light switch e3 hazard warning light switch f...
Page 51
S37 20a s36 30a 30 j59 x e1 l22 l23 h2 h7 j4 y u 30 y 15 0 1 2 58s l47 m17 m10 m2 m8 m19 m7 m3 m32 m31 v49 3 m25 f u 7 15 in out s19 15a s20 15a z s40 25a j345 x s21 15a s27 30a s77 30a f216 m m l46 m16 m9 m4 m6 m18 m5 m1 m30 m29 v48 v5 v11 m f4 x x v e3 j519 s14 10a 4 z j446 u10 6 2 1 x a 5 5 5 5 a.
Page 52: Electrical System
52 auxiliary signals 1 can high convenience 2 can low convenience 3 terminal 75 4 terminal 31 u connection within the functional diagram v11 pump for headlight washer conditioning system v48 servo motor for headlight range control, left v49 servo motor for headlight range control, right x number pla...
Page 53
S37 20a s36 30a 30 j59 e1 l22 l23 h2 h7 j4 2 u 30 0 1 2 58s l47 m17m10 m2 m8 m19 m7 m3 m32 m31 v49 m25 f 15 15 a 15 1 m2 in out s40 25a j345 s27 30a s77 30a f216 m m l46 m16 m9m4 m6 m18 m5 m1 m30 m29 v48 v5 v11 m x x v e3 4 j519 s14 10a j446 u10 u 3 s7 10a m4.
Page 54: Electrical System
54 5 v/div.= 10 ms/div. 0 t electrical system in the "highline" version of the vehicle electri- cal system control unit, only the 21 watt filament of the two-phase bulb for the brake and rear light is used. With lights switched on and non-actuated brakes, the power rating is reduced to 5 watts by a ...
Page 55
55 the hazard warning flasher signal is control- led separately by the vehicle electrical system control unit, via the hazard warning flasher button. If, during hazard warning flashing, the turn signal flasher is actuated, e.G. During towing, the hazard warning lights lose their priority for this pe...
Page 56: Electrical System
56 electrical system the windscreen wash/wipe relays are inte- grated into the vehicle electrical system control unit j519. The washer fluid reservoir is a two-part design for easier removal and installation. An additional sensor is fitted for vehicles with headlight washer system (hws). In the "hig...
Page 57
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 wi...
Page 58: Electrical System
58 in the basic version without rear electric win- dow lifters, central locking control of the rear doors is assumed by the central convenience electronics. Convenience system the convenience system previously used in the audi a2 is also used in the audi a4. In the series version, the following addi...
Page 59
59 the following information and functions are processed in the central convenience electronics: crash signal (from airbag control unit j234) handbrake switch f9 tailgate release – button for release, tailgate lock cylinder f248 – 3. Remote control button – switch for tailgate to f206 – switch for c...
Page 60: Electrical System
60 door control units the door control units integrated in the window lifter motors process the following signals: window lifter switches enabling via the cce door lock feedback signal – door contact signal – locked signal – safe signal for driver’s door also – lock cylinder switch unlocking/ lockin...
Page 61
61 in order to account for the resistance of normal or insulating windows with regard to the excess force limitation function of the electric window lifters, the relevant type of glazing is set in adaption channel 63. Mirror functions the mirror heating is switched on together with the – rear window...
Page 62: Electrical System
62 ts electrical system the audi a4 convenience system is available with – anti-theft alarm – ultrasonic interior monitor – shattered glass sensor (avant) – towing protection as optional extras. The anti-theft alarm is only activated when the vehicle is locked via the radio remote con- trol and by c...
Page 63
63 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. The ultrasonic interior monitor and the tow- ing protection can be switched off from inside the passe...
Page 64: Electrical System
64 functional mechanism of inclination sender towing protection is achieved by means of the inclination sender installed in the central convenience electronics. The functional mechanism of the inclination sender is based on the determination of resistance changes relating to the volumetric fluctuati...
Page 65
65 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. – there are now 12 programmable stations for am a...
Page 66: Electrical System
66 in order to improve sound quality, acoustic curves related to vehicle type are stored in the concert ii and symphony ii radios. The acoustic curves are set in the control unit coding function of the radio systems. In addition, the sound settings for the fm, am and cd modes are stored separately i...
Page 67
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. For further inform...
Page 68: Electrical System
68 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, – the signal input in the steering column electronics (...
Page 69
69 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 in...
Page 70: Electrical System
70 tele return info nav menu 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 route planning. For further information, please refer to the operatin...
Page 71
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 d...
Page 72: Electrical System
72 ts ts 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. The – aerial module, – aerial for navigation system (gps),+ – and aerial for telephone (gsm) are fitted in the mcb. The – aerial diversity, – aeri...
Page 73
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. The control signals of the na...
Page 74: Electrical System
74 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 n...
Page 75
75 in the ”business journey” mode, data relating to – date – time at start of journey – position at start of journey – position at end of journey – time at end of journey – kilometres driven are stored in the chip card reader r99. The date and route driven are stored in the ”private journey” mode. T...
Page 76: Heater/ac
76 heater/ac operating and display unit e87. The redesigned system is based on the performance data for top of the medium range vehicles, taking account of low system weight and energy consumption as well as, to an increasing extent, recycling capability. The operating and display unit e87 is connec...
Page 77
77 two versions of externally controlled com- pressors are used in the audi a4: – the 6-piston compressor, which you have already studied in detail in ssp 240, – the 7-piston compressor, which differs in the number of pistons and the resulting increased displacement. Depending on the country-specifi...
Page 78: Heater/ac
78 air conditioner heater/ac defrost flaps flaps for centre vent defrost flap control motor v107 temperature flap (upper) left temperature flap control motor v158 right tempera- ture flap control motor v159 temperature flap (lower) flaps for footwell vent footwell vent tempera- ture sender (left) g2...
Page 79
79 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. – the ptc additional heater elemen...
Page 80: Heater/ac
80 heater/ac significant advantages in comparison with vehicles without solar roof are: – lowered temperature level in vehicles parked in the sun (see chart), – increased efficiency of the air conditioner as the interior temperature set is achieved more quickly, – despite the reduced output of the s...
Page 81
81 fresh air blower control technology has been integrated in the new fresh air blower. It includes the following features: – integrated control unit with diagnostic capability via the operating and display unit e87 (fault memory and measured value block diagnosis-capable control unit), – optimised ...
Page 82: Heater/ac
82 actuators/sensors heater/ac ambient temperature sensor g17 dash panel temperature sensor g56 and 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 high-pressure sender ...
Page 83
83 153.9 5244 km 9:36 28.07.2000 diagnosis connection radiator fan control unit j293 radiator fan v7 regulating valve for air con- ditioner compressor n280 central flap control motor v70 and potentiometer g112 control unit for air conditioner automatic gearbox control unit j217 motronic control unit...
Page 84: Heater/ac
84 heater/ac functional diagram for fully automatic air conditioner components c20 solar cells e87 operating and display unit for air conditioner g59 driver’s seat temperature sensor g60 front passenger’s seat temperature sensor g65 high-pressure sender g89 temperature sensor - fresh air intake- cha...
Page 85
31 e87 z1 v113 v107 v71 v70 g112 g113 m m g135 g143 31 n280 g238 g65 v2/j126 v159 v158 g220 g221 g263 g262 g261 g89 t ° t ° t ° t ° 4 3 j9 z6 z8 c20 in out 15 30 g107 g59 g150 g60 g151 t ° t ° t ° t ° s1 5a s26 30a s44 30a s25 30a m s6 5a m m m m 2 1.
Page 86: Heater/ac
86 + - k additional heater heater/ac 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 circ...
Page 87
87.
Page 88
Service. For internal use only. 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 audi a4´01 - technical features design and function self-study programme 254 254 254.