Audi Q7 Service Training - page 36
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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 gear being engaged and
whether the parking aid control unit is defective.
Trailer recognition control unit J345
Informs the reversing camera system whether or
not a trailer is currently attached to the vehicle. If a
trailer is attached to the vehicle, then the reference
lines and the reference field are disabled.
Convenience system central control unit J393
Transmits the information as to whether the tailgate
is open or closed. If the tailgate is open,
the reference lines and the reference field are
deactivated.
Access and start authorisation control unit J518
Transmits the current status of terminal 15 to the
reversing camera.
Remarks
The following control units are optional and
therefore not installed in every Audi Q7:
●
Parking aid control unit J446
●
Trailer recognition control unit J345
●
TV tuner R78
Front information display and operating unit control
unit J523
It depicts the reversing camera image on its display.
In addition, system settings for the reversing
camera can also be made.
Onboard supply control unit J519
This transmits the information as to whether the
reversing light is currently actuated. In vehicles
without a parking aid control unit, it can be deduced
from this that the reverse gear is currently engaged
and that the camera image must be displayed on
the MMI screen accordingly.
ABS control unit J104
The “current vehicle speed” information is required
by the J104 for detecting the conditions for
switching the reversing camera on and off.
Data bus diagnostic interface J533
This directs the required CAN messages from other
bus systems onto the convenience CAN. Transmits
freeze-frame information if an entry is made in the
fault memory of the reversing camera system
control unit.
Reversing camera (rear-view)