74
Self-diagnosis of the
additional shift stage
As already mentioned on Page 64,
communication takes place between the
control unit and the diagnostic tester using
the new data protocol KWP 2000.
The diagnostic testers must have been
updated accordingly in order to be able to
communicate with the control unit.
V.A.G 1551
Program version 9.0
V.A.G 1552
Program version 6.0
Service
Basic set-up
In order to ensure problem-free function of
the shifting system, the controller J554 is
adapted to recognise the limit positions of
the selector fork.
Adaption is performed using the diagnostic
testers with the aid of function 04 Basic set-
up (see Workshop manual).
Basic set-up must be performed:
• At every 60,000 km service
• When replacing the J554 control unit (no
system function without basic set-up)
• When replacing the hydraulic regulator.
• When replacing the G302 travel sensor.
• When replacing the J556 control unit.
• When carrying out repairs to the
additional shift stage.
Follow the instructions given in the
Workshop manual.
The VAS 5051 cannot yet be used for the new
data protocol (anticipated from Oct./2000 with
new CD 2.0 basis and corresponding
CD brand ).
Address word 22
The basic set-up also serves as a final control
test.
For this reason you should access the fault
memory after basic set-up.
Note instructions on Page 46 and 57
when replacing the hydraulic regulator
or the travel sensor.
