Specifications

18
Function
The onboard power supply control unit in the Audi
TT Coupé ´07 basically has the same main functions
as the control unit in the Audi A3 ´04.
The onboard power supply control unit controls:
–the outside light
–the charge indicator lamp
– terminal 58s
– the load management system
– terminals 15, 50 and 30G
– the electric fuel pump II relay
– the windscreen wiper
– the heated rear window
– the signal horn
–the interior light
Installation location
The onboard power supply control unit is housed
under the dash panel on the left, and can be
accessed by removing the dash panel trim in the
driver footwell.
System overview
The onboard power supply control unit is integrated
in the convenience CAN bus within the vehicle
networking system.
It also performs the function of the LIN master for
the wiper motor control unit and the rain and light
detector sensor.
Electrical system and convenience electronics
Onboard power supply control unit J519
Reference
For further information on the
outside light control, activation of the
charge indicator lamp, the dimming
function (terminals 58s and 58d),
the load management system, the
terminal management system as well
as the fuel pump relay control, refer
to Self-Study Programme 312.
382_059
382_046
Onboard power supply
control unit
J519
Wiper motor
control unit
J400
Rain and light
detector sensor
G397