Audi-Resource - ECU Module 3C

ECU Module 3C - Lane Change

Lane change assistant control unit -J769, calibration

Audi A8 2003>

The lane change assistant (audi side assist) must always be calibrated when

the lane change assistant control unit -J769 or the lane change assistant control unit 2 -J770 has been replaced.
the rear bumper has been damaged, e.g. by a parking bump.
the rear bumper is removed from and refitted to the vehicle.
the fault entry 2849 - Lane change assistant control unit -J769, no or incorrect basic setting/adaption - is stored in the fault memory.

Ithe fault entry 2850 - Lane change assistant control unit 2 -J770, no or incorrect basic setting/adaption - is stored in the fault memory.

The calibration is performed in the following sequence:

1. The calibrator must be set up according to the Workshop Manual, Audi A8 2003 > Electrical System.

2. When the calibrator has been set up and aligned, run test program J769 - Calibration, (Rep.Gr. 96).

3. First the lane change assistant control unit -J769 located in the bumper on the left as seen in the direction of travel is calibrated.

4. When the lane change assistant control unit -J769 has been successfully calibrated the calibrator must be converted according to the Workshop Manual.

5. When the calibrator has been converted, the lane change assistant control unit 2 -J770 located in the bumper on the right as seen in the direction of travel is calibrated.

6. When the lane change assistant control unit 2 -J770 has been successfully calibrated, the angle variation in the two control units is checked.

7. If the angle variations are within the limits of -4.99 ° to 4.99 °, the calibration was completed successfully.

If the test program is aborted due to a fault during calibration, check the points:

J Is the lane change assistant calibrator VAS 6350/4 connected and switched on?

J Is the calibrator set up according to the Workshop Manual?

J Are the lane change assistant control units correctly mounted in the rear bumper?

J Is the rear bumper dirty in the area of the lane change assistant control units?

Lane change assistant control unit -J769, coding

Audi A8 2003>

Structure of the coding value (7 positions): 7654321

Position 1 and 2 (xxxxxXX):

I xxxxx07 = Audi A8 (standard body)

I xxxxx08 = Audi A8 (stretched body)

I xxxxx09 = Audi S8

Position 3 (xxxxXxx):

Country version

I xxxx0xx = Country variant 1:

B26 A Taiwan

B34 A USA

B35 A Canada

B39 A Mexico

B40 A Special requirements South America, not Argentina, Brazil and Chile

B41 A Brazil

B63 A Special requirements Caribbean independent states (Jamaica, Haiti, Cuba,Trinidad, Dominican Rep.)

B65 A N1xx = Country variant 2:

B00 A No type test country

B01 A Germany

B02 A Belgium

B03 A Czech Republic

B04 A Denmark

B05 A Finland

B06 A Norway

B07 A Sweden

B08 A France

B09 A GB/Northern Ireland

B10 A Republic of Ireland

B11 A Iceland

B12 A Austria

B13 A Switzerland

B14 A Italy (San Marino, Vatican City)

B15 A Spain (Andorra, Balearics, Canary Islands)

B16 A Portugal

B17 A Poland

B18 A Hungary

B19 A Greece

B20 A Turkey

B21 A Special requirement, Cyprus

B22 A Israel

B23 A AGCC states (Bahrain, Qatar, Kuwait, Oman, Saudi Arabia, United Arab Emirates)

B24 A New Zealand

B29 A Japan

B30 A Australia

B31 A Netherlands

B32 A Luxembourg

B33 A French overseas territories (Dominions,French Guyana,Guadeloupe, Martinique,Reunion)

B36 A China

B42 A Special requirements, Bulgaria

B44 A Croatia

B45 A Slovenia

B46 A Chile

B49 A Special requirements, Middle East (Iraq, Afghanistan)

B51 A Special requirements, Malta

B53 A South Africa

B59 A Slovakia

B60 A Special requirements, Brunei

B62 A Special requirements, rest of Asia

B67 A Type test country Indonesia

B68 A Type test country Argentina

B70 A Type test country Estonia

B71 A Type test country Latvia

B72 A Type test country Lithuania

B74 A Special requirements, Philippines

B75 A Type test country Ukraine

B76 A Type test country Belarus

B79 A Type test country India

B83 A Type test country Bahrain

B84 A Type test country Kuwait

B85 A Type test country Oman

B86 A Type test country Qatar

B87 A Type test country Saudi Arabia

I xxxx2xx = Country variant 3:

B29 A Japan

Position 4 (xxxXxxx):

Steering wheel position

I xxx0xxx = Left-hand drive (PR number: L0L)

I xxx1xxx = Right-hand drive (PR number: L0R)

Position 5 (xxXxxxx):

Trailer function

I xx0xxxx = No trailer function (no trailer control unit) (PR number: 1D0, 1D8)

I xx1xxxx = With trailer function (trailer control unit fitted) (PR numbers: 1D2, 1D4, 1D6, 1D9)

Position 6 and 7 (XXxxxxx):

I For the Audi A8 positions 6 and 7 are always coded 00 (00xxxxx).

Lane change assistant control unit -J769, reading measured value block

Audi A8 2003>

The following measured value blocks can be displayed:

Display group 1: Data, lane change assistant control unit -J769

Display zone 1: Term.15 supply voltage, lane change assistant control unit -J769

Specification: 9 Volts ...16 Volts

Display zone 2: Status lane change assistant

Specification:

I off

(lane change assistant not activated)

I on

(lane change assistant activated)

I deactivated

(e.g. in case of a fault entry)

Display zone 3: Communication local data bus (between lane change assistant control unit -J769 and lane change assistant control unit 2 -J770)

Specification:

I OK

(Communication local data bus OK)

I n.OK

(Communication local data bus not OK)

Display zone 4:Temperature in lane change assistant control unit -J769

Display range: -40 °C ... 90 °C

Display group 2: Data, lane change assistant control unit 2 -J770

Display zone 1: Term.15 supply voltage, lane keeping assistant control unit 2 -J770

Specification: 9 Volts ... 16 Volts

Display zone 2:Temperature in lane change assistant control unit 2 -J770

Display range: -40 °C ... 90 °C

Display zone 3: Status lane change assistant

Specification:

I off

(The lane change assistant is not switched on)

I deactivated

(The lane change assistant is on and the vehicle speed is below 60 km/h)

(The lane change assistant is on, the vehicle speed is above 60 km/h and the value of the cornering radius (display group 8/display zone 1) is below 170 m)

I activated

(The lane change assistant is on, the vehicle speed is above 60 km/h and the value of the cornering radius (display group 8/display zone 1) is above 170 m)

I disabled

(warning suppressed: owing to special circumstances no warning is to be signalled to the driver)

Display zone 4: Vacant

Display group 3: Vehicle data

Display zone 1: Reversing lights

Specification:

I off

I on

Display zone 2: Vehicle speed

Display range: 0 km/h ... xxx km/h

Display zone 3: Left turn signal

Specification:

I off

I on

Display zone 4: Right turn signal

Specification:

I off

I on

Display group 4: Vehicle data

Display zone 1: Trailer

Specification:

I n. defined

(trailer function fitted in vehicle but not coded in lane change assistant control unit -J769)

I Trailer yes

(trailer connected to vehicle)

I Trailer no

(trailer not connected to vehicle)

Display zone 2: Yaw rate

Display range: -128 °/s ... 127 °/s

Display zone 3: Travel pulses from brake electronics

Display range: 0 ... 2047

Display zone 4: Dimming signal term.58d from dash panel insert with which lane change assistant warning lamp -K232 is activated

Display range: 0 % ... 100 %

Display group 5: Information from sensors and Actuators 1

Display zone 1: Status lane change assistant button -E530

Specification:

I unpressed

I pressed

Display zone 2: Status lane change assistant warning lamp -K232

Specification:

I off

(lane change assistant warning lamp -K232 unlit)

I active

(lane change assistant warning lamp -K232 lit)

I n.OK

(with static fault entry 2852 - Lane change assistant warning lamp -K232, short to earth or open circuit/short to positive)

Display zone 3: Data from rain and light sensor

Display range: 0 ... 1023

Display zone 4: Data from rain and light sensor

Display range: 0 ... 255

YZNote on display zones 3 and 4

If the vehicle is positioned in conditions approximating to daylight, display zones 3 and 4 in display group 5 show a value greater than 0.

Display group 6: Information from sensors and Actuators 2

Display zone 1: Dimming signal lane change assistant warning lamp, driver side -K233

Display range: 0 % ... 100 %

Specification:

I 5 %

(This value is outputted if communication is taking place with the lane change assistant control unit -J769, for example reading measured value block)

I 60 %

(This value is outputted if a control element test is being performed on the lane change assistant control unit -J769)

I 0 % ... 100 %

(During driving, values between 0 and 100 % are displayed, depending on the brightness setting on the MMI CAR/Systems/Audi side assist/Display brightness menu. On vehicles without 34 - Adaptive suspension on the MMI CAR/Audi side assist/Display brightness.) and the received signals of the rain and light sensor)

Display zone 2: Status lane change assistant warning lamp, driver side -K233

Specification:

I off

(lane change assistant warning lamp, driver side -K233 unlit)

I on

(lane change assistant warning lamp, driver side -K233 lit)

I n.OK

(with static fault entry 2853 - Lane change assistant warning lamp, driver side -K233, short to earth or open circuit/short to positive)

Display zone 3: Dimming signal lane change assistant warning lamp, passenger side -K234

Display range: 0 % ... 100 %

Specification:

I 5 %

(This value is outputted if communication is taking place with the lane change assistant control unit -J769, for example reading measured value block)

I 60 %

(This value is outputted if a control element test is being performed on the lane change assistant control unit -J769)

I 0 % ... 100 %

Display zone 4: Status lane change assistant warning lamp, passenger side -K234

Specification:

I off

(lane change assistant warning lamp, passenger side -K234 unlit)

I on

(lane change assistant warning lamp, passenger side -K234 lit)

I n.OK

(with static fault entry 2854 - Lane change assistant warning lamp, passenger side -K234, short to earth or open circuit/short to positive)

Display group 7: User profiles

Display zone 1: Assignment of display brightnesses to vehicle keys

Specification:

I *X X X X

(The X stands for the vehicle keys. The asterisk (*) before the X indicates the vehicle key currently detected by the entry and start authorisation system. Up to 4 vehicle keys can be displayed A value from 1 to 5 is displayed in place of the X. The values from 1 to 5 indicate the preset brightness assigned to the vehicle key concerned and at which the warning lamps in the exterior mirrors light. The brightness is adjusted on the MMI (on vehicles with 34 - Adaptive suspension on the MMI CAR/Systems/Audi side assist/Display brightness menu. On vehicles without 34 - Adaptive suspension on the MMI CAR/Audi side assist/Display brightness menu.))

Display zone 2: Vacant

Display zone 3: Vacant

Display zone 4: Vacant

Display group 8: Driving dynamics

Display zone 1: Amount of cornering radius

Display range: 0 m ... 32767,5 m

Display zone 2: Vacant

Display zone 3: Vacant

Display zone 4: Vacant

Display group 10: Object data 1

Display zone 1: Detected object a, left-hand lane, distance X

(This measured value indicates the distance between the vehicle with the lane change assistant and the detected vehicle on the left-hand side.)

Display range:-63 m ... 0 m

Display zone 2: Detected object b, same lane behind vehicle with lane change assistant, distance X

(This measured value indicates the distance between the vehicle with the lane change assistant and the vehicle travelling behind it in the same lane.)

Display range:-63 m ... 0 m

Display zone 3: Detected object c, right-hand lane, distance X

(This measured value indicates the distance between the vehicle with the lane change assistant and the detected vehicle on the right-hand side.)

Display range:-63 m ... 0 m

Display zone 4: Vacant

YZNote

The block diagram in test program J769 - Read measured value block (Rep.Gr. 96) provides a graphical representation of the object data.

Display group 11: Object data 2

Display zone 1: Detected object a, left-hand lane, distance Y

(This measured value indicates the lateral distance between the vehicle with the lane change assistant and the detected vehicle on the left-hand side.)

Display range: 4,5 m ... 1,6 m

Display zone 2: Detected object b, same lane behind vehicle with lane change assistant, distance Y

(This measured value indicates the lateral offset between the vehicle with the lane change assistant and the vehicle travelling behind it in the same lane.)

Display range:1,5 m ... -1,5 m

Display zone 3: Detected object c, right-hand lane, distance Y

(This measured value indicates the lateral distance between the vehicle with the lane change assistant and the detected vehicle on the right-hand side.)

Display range: -1,6 m ... -4,5 m

Display zone 4: Vacant

Note

The block diagram in test program J769 - Read measured value block (Rep.Gr. 96) provides a graphical representation of the object data.

Display group 12: Object data 3

Display zone 1: Detected object a, left-hand lane, speed difference

(This measured value indicates the difference in speed between the vehicle with the lane change assistant and the detected vehicle on the left-hand side.)

Display range: -128 km/h ... 127 km/h

Display zone 2: Detected object b, same lane behind vehicle with lane change assistant, speed difference

(This measured value indicates the difference in speed between the vehicle with the lane change assistant and the vehicle travelling behind it in the same lane.)

Display range: -128 km/h ... 127 km/h

Display zone 3: Detected object c, right-hand lane, speed difference

(This measured value indicates the difference in speed between the vehicle with the lane change assistant and the detected vehicle on the right-hand side.)

Display range: -128 km/h ... 127 km/h

Display zone 4: Vacant

Note

The block diagram in test program J769 - Read measured value block (Rep.Gr. 96) provides a graphical representation of the object data.

Display group 20: Measured angles, output of Doppler generators

Note

Display zones 1 to 4 of display group 20 are only needed for calibration.

Display zone 1: Measured horizontal angle deviation in lane change assistant control unit -J769

Display range: -12,8 ° ... 12,8 °

Display zone 2: Output of Doppler generator 1

Specification: Above 80 %

Display range: 0 % ... 200 %

(The measured value is necessary when calibrating the lane change assistant. The radar beam of the lane change assistant control unit -J769 is reflected by the lane change assistant calibrator VAS 6350/4 during calibration and measured by the control unit -J769)

Display zone 3: Measured horizontal angle deviation in lane change assistant control unit 2 -J770

Display range: -12,8 ° ... 12,8 °

Display zone 4: Output of Doppler generator 2

Specification: Above 80 %

Display range: 0 % ... 200 %

(The measured value is necessary when calibrating the lane change assistant. The radar beam of the lane change assistant control unit 2 -J770 is reflected by the lane change assistant calibrator VAS 6350/4 during calibration and measured by the control unit -J770)

Display group 21: Angle deviation

Note

Display zones 1 and 2 of display group 21 are only needed for calibration.

Display zone 1: Static angle deviation in lane change assistant control unit -J769

Specification: -4.99 ° to 4.99 °

Display range: -6,35 ° ... 6,35 °

Display zone 2: Static angle deviation in lane change assistant control unit 2 -J770

Specification: -4.99 ° to 4.99 °

Display range: -6,35 ° ... 6,35 °

Display zone 3: Vacant

Display zone 4: Vacant

Display group 22: Autocalibration

Display zone 1: Autocalibration

Specification:

I n.OK

(In the event of a fault entry in the lane change assistant control unit -J769)

I running

(If the lane change assistant is active, it is calibrated automatically while driving, provided crash barriers are detected alongside the road for a certain period of time. If crash barriers are detected and calibration is in progress, the -running- readout appears.)

I off

(If no crash barriers are detected alongside the road, or if the lane change assistant is not active, the 'off' readout appears.)

Display zone 2: Dynamic angle deviation in control unit 1

Display range: -6,35 ° ... 6,35 °

Display zone 3: Dynamic angle deviation in control unit 2

Display range: -6,35 ° ... 6,35 °

Display zone 4: Distance covered

Display range: 0 km ... 65353 km

(The measured value indicates how many kilometres the autocalibration was active for in total.)

Display group 125: Communication data bus 1

Display zone 1: Communication brake electronics

Specification:

I ABS 0

(No communication with brake electronics)

I ABS 1

(Communication with brake electronics OK)

Display zone 2: Communication dash panel insert

Specification:

I Combi 0

(No communication with dash panel insert)

I Combi 1

(Communication with dash panel insert OK)

Display zone 3: Communication data bus diagnostic interface

Specification:

I Gateway 0

(No communication with data bus diagnostic interface)

I Gateway 1

(Communication with data bus diagnostic interface OK)

Display zone 4: Communication electronic central electrics

Specification:

I Elec. CE 0

(No communication with electronic central electrics)

I Elec. CE 1

(Communication with electronic central electrics OK)

Display group 126: Communication data bus 2

Display zone 1: Convenience system central module communication

Specification:

I Central 0

(No communication with convenience system central module)

I Central 1

(Communication with convenience system central module OK)

Display zone 2: Communication entry and start authorisation

Specification:

I El.ign.lock 0

(No communication with entry and start authorisation system)

I El.ign.lock 1

(Communication with entry and start authorisation system OK)

Display zone 3: Communication trailer function

Specification:

I Trailer 0

(No communication with trailer function)

I Trailer 1

(Communication with trailer function OK)

I no readout

(If the trailer function is not coded in the lane change assistant control unit -J769, no readout appears.)

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