Audi A4 2001 Скачать руководство пользователя страница 33 | Manualshive

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Audi A4 2001 Скачать руководство пользователя страница 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 increase gradient exceeds a
specified value (emergency braking), the ABS
return pump and the relevant solenoid valve
are activated by the ESP control unit and the
brake pressure is thus increased into the ABS
control range, in a similar manner to that of
the control system for an electronic differen-
tial lock.

The integral inlet and outlet valves in the
hydraulic modulator are no longer sim-
ply switched on/off, but are regulated
via supplied voltage.
This enables more precise control on
extremely slippery surfaces, e.g. ice.

SSP254_084

Time [t]

Br

ake pressure [p]

Brake pressure determined by an
experienced driver

Regulated brake pressure
(brake assistant)

Determined brake pressure
insufficient inexperienced driver

Brake assistant activated

Brake pedal unloaded

Brake assistant
switches off

Phase 1

Phase 2

ABS control
range

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Содержание A4 2001

Страница 1: ...Service For internal use only AUDI A4 01 Technical Features Design and Function Self study programme 254 254...

Страница 2: ...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 column switch module...

Страница 3: ...circuit diagram 46 Control unit for vehicle electrical system 48 Function circuit diagram for lowline version 50 Function circuit diagram for highline version 52 Convenience system 58 Anti theft alarm...

Страница 4: ...design with aluminium housings The 2 0 litre 4 cylinder in line engine with 96 kW 130 PS and the 3 0 litre V6 with 162 kW 220 PS fulfil the EU 4 emissions standard A high degree of running smoothness...

Страница 5: ...in comparison to its predecessor to 0 28 A special feature is the so called aero floor which provides for optimal airflow on the underside of the vehicle Communication centre on wheels With regard to...

Страница 6: ...6 9 7 7 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...

Страница 7: ...generated by the aero floor could be compensated by dispens ing with certain panelling components as well as by dispensing with PVC protection of the underside of the vehicle The latter is of advantag...

Страница 8: ...This could only be achieved by increasing the body weight In order to reduce this additional weight to a minimum the proportion of light weight materials has been increased in comparison to its predec...

Страница 9: ...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 i...

Страница 10: ...developed sub frame is bolted to the door shell via fitted bolts In addition the doors have been fitted with a second weatherseal One weatherseal is fitted to the door and the other is fitted to the...

Страница 11: ...inside by actuating the door release handle twice Continuous locking of luggage compartment If the lock cylinder is in the horizontal posi tion with the key removed the luggage com partment lid is no...

Страница 12: ...pant 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 SSP...

Страница 13: ...hich triggers the relevant restraint system compo nents Key E224 Key switch for switching off passenger s side airbag G179 Side airbag crash sensor driver s side B pillar G180 Side airbag crash sensor...

Страница 14: ...Vehicle rebound Impact Triggering of belt tensioners Triggering of front airbags Front airbags inflated Belt force limiter response Damping function response in the steering column SSP254_063 SSP254_0...

Страница 15: ...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 from the control unit internal crash sen sors The crash...

Страница 16: ...i 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...

Страница 17: ...526 optional unlocking the vehicle Switch on interior light switch must be set to door contact switching on hazard warning lights via the central convenience electronics J393 The auxiliary heater J162...

Страница 18: ...t 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 Detailed information on these engines can be found in S...

Страница 19: ...O Particle Limit value EU 3 limit values 100 Particle 0 05 g km CO 0 64 g km HC NOx 0 56 g km NOx 0 50 g km SSP255_038 Innovations 2 5 l V6 TDI engine Capacity 2496 cm3 Bore 78 3 mm Stroke 86 4 mm Com...

Страница 20: ...ealised during the engine warm up phase The high pressure section of the injection pump has been redesigned with regard to pressure levels and quicker solenoid valve actuation The injection pressure a...

Страница 21: ...roved spray formation espe cially in the part throttle range for small injection quantities and short needle lift SSP255_042 ICU seat geometry Dual needle guide Due to the improved spray formation thr...

Страница 22: ...rge air is fed directly through the cooling fins via a separate pipe to the second charge air cooler and into the through duct Charge air cooler Engine and gearbox The existing series connection of th...

Страница 23: ...troduction of the S programme ena bles a significant extension of the useful shift range between economy and sports The S programme comprises the following special features If during driving with cons...

Страница 24: ...s that the steering wheel tiptronic function is now also available in selector lever position D The transition to the tiptronic function is effected by actuating one of the two tip switches on the mul...

Страница 25: ...25 Notes...

Страница 26: ...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 a...

Страница 27: ...al components is used in both the front wheel drive as well as in the quattro versions The wheel bearings of the quattro version consist of pressed in double row angular ball bearings with conventiona...

Страница 28: ...used for all engine gearbox combinations except those including the 01V 5 speed automatic gearbox A newly designed three point mechanical unit mounting is used in the new Audi A4 The hydraulically da...

Страница 29: ...ow ambient temperatures the required delivery rate for the return pump for ABS V39 could not be achieved without a charging pump resulting from the increased suction resistance in the system The purpo...

Страница 30: ...e suction volume must be drawn in and flow through the suction line during one piston stroke piston stroke from TDC to BDC The suction pressure is correspondingly high and increases with increasing vi...

Страница 31: ...ck into the suction line against the inlet valve As the entire suction volume is supplied almost continuously the maximum suction flow rate is significantly lower which dimin ishes the suction pressur...

Страница 32: ...reasing the brake pressure automatically to a level exceeding the locking limit The ABS Anti lockbrakingsystem is thus quickly brought into the operating range which enables a maximum vehicle decelera...

Страница 33: ...pressure is thus increased into the ABS control range in a similar manner to that of the control system for an electronic differen tial lock The integral inlet and outlet valves in the hydraulic modu...

Страница 34: ...pedal bracket via a bayonet fitting The position of the push rod is adjusted for the basic setting For this purpose the brake light switch must be released by turning it anti clockwise The push rod ca...

Страница 35: ...35 Notes...

Страница 36: ...trol unit for telematics J499 Control unit for mobile phone control electronics J412 Front airbag crash sensor passen ger s side G284 Control unit for Motronic J220 Control unit for auto matic gearbox...

Страница 37: ...Control unit for tyre pressure monitor J502 SSP254_008 Door control units passenger side J387 rear right optional J389 ESP sensor Control unit for trailer recognition J345 Central control unit for con...

Страница 38: ...wheel are registered via the steering column electronics G85 J162 J502 R99 J401 Gate way J220 J234 J387 J386 J388 J389 J393 J217 J104 J453 J446 J402 E87 J519 J136 J345 J526 J499 J507 J527 J285 R94 TRA...

Страница 39: ...J499 Control unit for telematics J502 Control unit for tyre pressure monitor J507 Control unit for speech entry J519 Control unit for vehicle electrical system J526 Control unit for telephone permanen...

Страница 40: ...h panel insert versions lowline highline The highline version is equipped with a high quality colour display for the driver infor mation system and is installed in vehicles with navigation systems as...

Страница 41: ...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 sys...

Страница 42: ...feature of the Auto Check system is the position dependent bulb monitor display The fault message is transmitted from the vehi cle electrical system control unit J519 via the convenience data bus to t...

Страница 43: ...e plausibility of both fuel gauge senders in quattro vehicles as well as the terminal 15 input signal Due to the gateway function of the dash panel insert the communication with the individual control...

Страница 44: ...tch signals Furthermore the control buttons for multi function and tiptronic steering wheel are registered via the steering wheel electronics module Steering column switch Detection of the respective...

Страница 45: ...g column electronics see graphic 254 018 on Page 57 The steering column electronics module with operating unit for tiptronic multi functions horn etc is incorporated in the self diagnosis Address word...

Страница 46: ...ck terminal P X Y Connection within the functional diagram Z Electrical system Functional diagram Steering column switch module maximum equipment Components E Windscreen wiper switch E2 Turn signal sw...

Страница 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...

Страница 48: ...The power connections for the individual con sumers are driven via semi conductor ele ments e g transistors A separate supply is not required as this is provided by the internal electronics in the eve...

Страница 49: ...function and also performs the following control functions Driving light and dipped beam left right Fog lights and rear lights Reversing lights Brake lights with separate outputs to each of the indiv...

Страница 50: ...rear light left M5 Bulb for turn signal light front left M6 Bulb for turn signal light rear left M7 Bulb for turn signal light front right M8 Bulb for turn signal light rear right M9 Bulb for brake li...

Страница 51: ...0 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...

Страница 52: ...Bulb for rear fog light right M1 Bulb for side light left M2 Bulb for rear light right M3 Bulb for side light right M4 Bulb for rear light left M5 Bulb for turn signal light front left M6 Bulb for tur...

Страница 53: ...L23 H2 H7 J4 2 U 30 0 1 2 58s L47M17M10M2 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 S1...

Страница 54: ...ighline version SSP254_080 Measuring equipment DSO Recorder operation Photo Channel A Channel B Measuring mode Cursor 1 Cursor 2 Multimeter Help Print Position Time Div Trigger mode Skip Brake not act...

Страница 55: ...her USA only are specified by the central convenience elec tronics and transmitted via the convenience data bus to the vehicle electrical system con trol unit which then executes the com mands The sig...

Страница 56: ...is to switch off the HWS pump via the vehicle electrical system control unit This prevents the pump running dry Wash wipe system The wash wipe system is equipped with the speed dependent 4 stage inte...

Страница 57: ...Central convenience electronics Communication takes place by means of the convenience data bus via the central conven ience electronics as no separate K wire leads to the vehicle electrical system co...

Страница 58: ...warning lights Radio remote control and in the optional version the following functions Anti theft alarm with interior monitor and towing protection new Electric sliding tilting glass sun roof Footwel...

Страница 59: ...ar doors Fuel filler flap Motor for tank cap locking V155 Tailgate Motor for tailgate release V139 Anti theft alarm optional Horn for anti theft alarm H8 sounder Turn signal lights via data bus to veh...

Страница 60: ...h for seat memory driver s side optional E263 Switch for interior monitor E183 optional Inclination sensor switch optional for front doors also Mirror release switch optional Sender for mirror positio...

Страница 61: ...mirror glass is kept at a temperature of around 20 C The mirror fold in function optional returns the mirrors to the normal position at a vehicle speed of 15 km h The function is disabled at the same...

Страница 62: ...emote control or opening the vehicle via the driver s door lock cylinder and switching on the ignition within 15 seconds If this time period is not observed or if the key used is not stored in the imm...

Страница 63: ...when the power supply has been interrupted The ultrasonic interior monitor and the tow ing protection can be switched off from inside the passenger compartment by means of a switch Diagnostics The an...

Страница 64: ...nclination sensor caused by one sided lifting of the vehicle alter the resistance The alarm is trig gered The angle of inclination can be displayed in the measured value blocks Sub com partment Cerami...

Страница 65: ...radio systems of the new generation The connection of the new generation of radios to the data bus information system enables the exchange of large volumes of data with other systems This makes new f...

Страница 66: ...e radio tuner search func tion Radio concert II A single speed CD player is integrated in the concert II radio The cassette player has been discontinued Radio concert II and symphony II The improved r...

Страница 67: ...via the data bus informa tion system SSP254_006 Ignition on steering column electronics Ignition key inserted steering column electronics Switch illumination dash panel insert Display illumination das...

Страница 68: ...s information system must be checked Diagnostics For diagnosis of radio systems concert II and symphony II current consumption of aerial diversity is monitored via the intermittent frequency IF wiring...

Страница 69: ...phone connection Once it is switched on the navigation system takes account of the traffic messages within a radius of approx 50 km around the vehicle If the route planning is activated any hold ups a...

Страница 70: ...orm standard throughout Europe The TMC data is not currently transmitted by all radio stations This requires the use of a second tuner in the radio or in the interface of the Navigation System Plus As...

Страница 71: ...eive the TMC data an interface connects the aerial and radio The following data is exchanged via the interface Display request instrument cluster Traffic news Telematics Fault messages card reader Con...

Страница 72: ...tart function TS of the auxiliary heating are integrated in the aerial module The aerial conductor is located in the rear window The electrical connection between the aerial amplifier and the conducto...

Страница 73: ...of the navigation system Transfer of the image and sound data takes place via the conventional wiring The TV tuner is not connected to the data bus information system Self diagnosis Address word 57 T...

Страница 74: ...tax purposes The Audi Logbook is only available in conjunction with Navigation Plus or Navigation IV The Audi Logbook System includes Chip card reader R99 PC card reader Software CD for installing th...

Страница 75: ...e stored on the chip card Once 200 individual journeys have been stored in the card reader the driver is requested by a message on the navigation system display to store the data on the chip card The...

Страница 76: ...f the same temperature is desired for the passenger s side as for the driver s side the Auto button should be pressed for at least three seconds The same applies the other way round for making the dri...

Страница 77: ...ollowing com pressor types 6 and 7 pistons for compressor fitted on right side of engine 6 and 7 pistons for compressor fitted on left side of engine 6 pistons for 6 cylinder TDI Diesel mechani cal un...

Страница 78: ...p lower Flaps for footwell vent Footwell vent tempera ture sender left G261 Footwell vent tempera ture sender right G262 Sender for outlet temperature evaporator G263 Central flap control motor V70 Te...

Страница 79: ...a rubber plug Modified fresh air blower for passenger compartment description see section Fresh air blower electronically controlled fresh air blower on page 81 Connecting hose to glove compartment c...

Страница 80: ...r the first time the A4 can optionally be equipped with the solar roof previously used in the A8 and A6 The fresh air blower is continually driven by electricity obtained from solar radiation The outp...

Страница 81: ...display unit E87 and requested by the control unit for fresh air blower J126 via a PWM signal In the case of malfunctions such as e g a stiff or blocked blower this is signalled to the operating and...

Страница 82: ...t G262 Sender for footwell vent tempera ture left G261 High pressure sender G65 Evaporator outlet temperature sender G263 Fresh air intake temperature sensor G89 Sunlight penetration photo sensor G107...

Страница 83: ...iometer G135 Motor for air flow flap V71 with potentiometer G113 Temperature flap positioning motor V158 right with potentiometer G221 Series resistor for fresh air blower N24 control unit for fresh a...

Страница 84: ...eter positioning motor for temperature flap right G238 Air quality sensor G262 Vent temperature sender footwell left G262 Vent temperature sender footwell right G263 Vent temperature sender evaporator...

Страница 85: ...07 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...

Страница 86: ...additional heater warms the heating system heat exchanger in the air conditioner unit via the cooling water circuit The cut in time is programmed via the dash panel insert Flame sensor Fan drive Diffu...

Страница 87: ...87...

Страница 88: ......

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