Self-Study Program

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Tailgate control unit J605 and
tailgate control unit 2 J756
364_054
364_053
Changes to Audi A6 ‘05
The tailgate control units and drives J605 and J756 have been adopted from the Audi A6 Avant.
The software was adapted to the Audi Q7 tailgate, which, for example, has a different opening angle than
the Audi A6 Avant tailgate. The tailgate control operating concept is identical to that described in SSP 344.
The tailgate control system
The tailgate control unit J605 communicates with tailgate control unit 2 J756 via a single-wire bus
manufactured by systems supplier Valeo.
The tailgate control unit J605 is a convenience CAN bus user and can be addressed under the address word
6D with the diagnostic tester. The tailgate control unit 2 J756 cannot be addressed separately with the
diagnostic tester; it transmits its diagnostic information to the tailgate control unit J605.
The tailgate drives and the tailgate control unit form a unit. They have a single part number. The tailgate
control unit J605 is always installed on the left-hand side and is the master control unit, while tailgate control
unit 2 J756 is located on the right-hand side and acts as the slave control unit.
Installation locations of the tailgate drives
Reference
For further information, please refer to
Self-Study Programme SSP 344.