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Audi Q7 Service Training

Summary of Q7

  • Page 1

    375 all rights reserved, including the right to make technical modifications. Copyright audi ag i/vk-35 service.Training@audi.De fax +49-841/89-36367 audi ag d-85045 ingolstadt technical status 10/05 printed in germany a05.5s00.21.20 audi q7 - new driver assistance systems self-study programme 375 v...

  • Page 2

    Taking the lead: with design & performance self-study programme for the audi q7 ssp 312 audi a3 ‘04 – control units – distributed functions – infotainment – passenger protection order number: a03.5s00.03.00 375_041 ssp 326 audi a6 ´05 electrical system – networking – bus topologies – convenience ele...

  • Page 3: Contents

    Note reference audi side assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 the self-study programme provides basic information on the design and function of new vehicle models, new vehicle components or new technologies. The self-study programme is not intended as a work...

  • Page 4: Audi Side Assist

    4 audi side assist audi side assist in the audi q7 introduction the purpose of the audi side assist is to monitor the area behind and to the side the vehicle using radar sensors and assist the driver when changing lanes. The area monitored also includes the so-called "blind spot" on the driver side ...

  • Page 5

    5 the audi side assist is equipped with two control units, the side assist control unit j769 (master control unit) and the side assist control unit 2 j770 (slave control unit). The master control unit forms a single module with the right radar sensor, while the slave control unit forms a single modu...

  • Page 6: Audi Side Assist

    6 audi side assist fitting locations in the audi q7, the two control unit modules are located in the area of the rear bumper and fastened to the end plate. The end plate is clipped to the bumper cover and bolted to the body. The bumper conceals the modules, making them invisible from the outside, un...

  • Page 7

    7 radar sensor detection zone the detection zone consists of areas to the rear and to both sides of the vehicle. The rear detection area extends from the rear edge of the vehicle to approx. 50 metres rearwards. This corresponds to the grey area between lines a and b. The side area extends from the r...

  • Page 8: Audi Side Assist

    8 audi side assist warning lamps in the exterior mirrors the audi side assist warns or alerts the driver, as appropriate, of potential hazards during a lane change by means of warning lamps integrated into the two exterior mirrors. The usual service designations for these are: side assist warning la...

  • Page 9

    9 by way of an example, two typical traffic situations resulting in a warning being provided by the audi side assist are described below: scenario 1 the vehicle with the audi side assist is being driven in the centre lane of a three-lane motorway and is currently overtaking the vehicle on the right-...

  • Page 10: Audi Side Assist

    10 audi side assist operating the system the side assist button e530 is located in the driver door, to the right of the central locking switch. The button is used for switching the audi side assist on and off. A red led in the button indicates its current status. If the led is illuminated, this mean...

  • Page 11

    11 adjusting the brightness of the warning lamps using the mmi, the customer can individually adjust the brightness of the warning lamps in the exterior mirrors. For this purpose, the "audi side assist" menu item in the car menu of the mmi must be selected and activated by pressing the rotary contro...

  • Page 12: Audi Side Assist

    12 audi side assist implementation of function in hardware and software system circuit diagram the master and slave control units exchange data via a dedicated high-speed can bus. The master control unit is connected to the extended can, enabling data exchange with other bus modules via the data bus...

  • Page 13

    13 allocation of tasks between master and slave control units the two control units emit radar beams using the transmitting aerials. The emitted radar beams are reflected by objects. Depending on the nature of the object, many, few or no beams at all are reflected. The reflected beams are measured i...

  • Page 14: Audi Side Assist

    14 audi side assist communication structure of the audi side assist the audi side assist requires a large amount of information from a number of different control units which are in turn connected to the various bus systems. Below is a description of the control units that exchange data with the aud...

  • Page 15

    15 rain and light sensor g397 supplies the audi side assist with the instantaneously measured ambient brightness via its lin master, the onboard supply control unit j519. This enables the brightness of the warning lamp to be perfectly adapted to the ambient conditions. Control unit in dash panel ins...

  • Page 16: Audi Side Assist

    16 audi side assist diagnostics in the diagnostics tester, the address word 3c is assigned to the side assist control unit (master) j769. The side assist slave control unit j770 is not addressable separately using the diagnostics tester and thus does not have its own address word. The fault memory, ...

  • Page 17

    17 special tools have been developed for calibrating the radar sensors. These are a calibration board with a doppler generator vas 6350, wheel centre markers vas 6350/1 and a distance measuring device vas 6350/2 featuring laser measuring technology. The calibration board is used for calibrating the ...

  • Page 18: Audi Side Assist

    18 audi side assist applied radar technology radar sensor system the word radar is an acronym and stands for radio detection and ranging. The technology is used in stationary objects for determining positions as a function of distance and angle. In moving objects, the movement is detected as a funct...

  • Page 19

    19.

  • Page 20: Optical Parking System (Ops)

    20 introduction the optical parking system (ops) is an innovative extension of previous audi parking aid systems. The 4-channel (rear only parking aid) and the 8-channel (front and rear parking aid) systems are already familiar. In these systems, an acoustic signal provides the customer with informa...

  • Page 21

    21 the purpose of the parking aid control unit is to: ● provide the supply voltage for the parking aid sensors ● evaluate and process the signals from the parking aid sensors ● activate the two parking aid warning buzzers h15 and h22 ● transmit the information required for displaying the ops image o...

  • Page 22: Optical Parking System (Ops)

    22 fitting location the parking aid control unit j446 is fitted at the rear right, underneath the load floor. It can be addressed using the diagnostics tester under address word 76. Parking aid sensors the audi q7 is the first vehicle to use fifth generation parking aid sensors. They are much smalle...

  • Page 23

    23 operation of the parking aid system the driver is only given audible and visual information if the parking system is activated. Activation is automatic when reverse gear is engaged. During forward parking or when moving forwards towards an obstacle, the parking system must be activated manually b...

  • Page 24: Optical Parking System (Ops)

    24 information to the driver if an obstacle has been detected inside the warning zone while the parking aid system is activated, the distance warning is triggered. As the distance to the obstacle decreases, the time between the sound pulses also diminishes until it becomes a continuous tone when a c...

  • Page 25

    25 communication structure of the optical parking system in order to operate correctly, the parking aid control unit also requires information from other control units. The control unit receives this information via the convenience can. Information required from the modules of other bus systems is m...

  • Page 26: Optical Parking System (Ops)

    26 the following information is supplied to the parking aid control unit j446 by the control units listed below: onboard supply control unit j519 the reversing lights are on. It can be deduced from this that reverse gear is engaged and that the parking aid system needs to be activated. (can-message ...

  • Page 27

    27 diagnostics in the diagnostics tester, the address word 76 is assigned to the parking aid control unit. The following variables can be found in the measured value blocks: ● distance of the individual rear sensors from an obstacle ● distance of the individual front sensors from an obstacle ● minim...

  • Page 28

    28 reversing camera (rear-view) reversing camera (rear-view) in the audi q7 introduction the audi reversing camera provides the customer with an improved view to the rear by capturing the area behind the vehicle and depicting this on the mmi screen. This makes it much easier for customers to reverse...

  • Page 29

    29 reversing camera the audi reversing camera is a panasonic camera. It weighs 40 g and measures 27 mm x 24.5 mm x 35 mm. Due to its compact design, it was possible to integrate the camera into the tailgate handle. The camera lens has a dirt-repellent coating. Dirt on the camera lens is not detected...

  • Page 30

    30 reversing camera (rear-view) reversing camera system control unit j772 tasks of the control unit the reversing camera system control unit j772 is connected to the convenience can. The purpose of the reversing camera system control unit is to: ● supply the reversing camera with voltage ● remove di...

  • Page 31

    31 system circuit diagram the reversing camera and the corresponding control unit are connected together by 4 wires. These are the wire for the camera’s power supply and the corresponding earth wire, a screened wire for the video signal and the screening of the video signal connected to earth. The c...

  • Page 32

    32 reversing camera (rear-view) parking modes with the audi reversing camera, there are two different parking modes - the “transverse parking” mode and the “parallel parking” mode. Depending on the parking situation, the customer can opt for one of the two modes. The “transverse parking” mode is def...

  • Page 33

    33 parking mode 2: parallel parking parking mode 2, “parallel parking”, makes it easier for the driver to reverse park alongside the kerb. Two blue fields are depicted - a light-blue field for reverse parking on the right-hand side and a dark-blue field for reverse parking on the left. The static bl...

  • Page 34

    34 activating the reversing camera the display of the reversing camera image on the mmi screen is activated automatically as soon as terminal 15 is active and reverse gear has been engaged. On vehicles with the optical parking system (ops), the reversing camera display may also be activated using th...

  • Page 35

    35 communication structure of the reversing camera system the reversing camera system control unit exchanges information with various control units. This information is required for the correct operation of the overall function and is described below: 375_039 onboard supply control unit j519 drive c...

  • Page 36

    36 steering angle sender g85 supplies the current steering angle, which is needed for calculating the dynamic reference lines in the camera image. Parking aid control unit j446 supplies information as to whether the parking aid system is currently active based on the button or based on the reverse g...

  • Page 37

    37 diagnostics in the diagnostics tester, the address word 6c is assigned to the reversing camera control unit. The following variables can be read out in the measured value blocks: ● s-contact status and terminal 15 status ● reverse gear engaged yes / no ● voltage supply for control unit ● voltage ...

  • Page 38

    38 reversing camera (rear-view) special tool for system calibration the same calibration board is used for calibrating the reversing camera as is also used for calibrating the audi side assist. The doppler generator is however not required. The way in which the calibration board must be aligned to t...

  • Page 39

    Taking the lead: with design & performance self-study programme for the audi q7 ssp 312 audi a3 ‘04 – control units – distributed functions – infotainment – passenger protection order number: a03.5s00.03.20 375_041 ssp 326 audi a6 ´05 electrical system – networking – bus topologies – convenience ele...

  • Page 40: 375

    375 all rights reserved, including the right to make technical modifications. Copyright audi ag i/vk-35 service.Training@audi.De fax +49-841/89-36367 audi ag d-85045 ingolstadt technical status 10/05 printed in germany a05.5s00.21.20 audi q7 - new driver assistance systems self-study programme 375 v...