Automatic Test Sequence

Automatic test sequence
The automatic test sequence checks all the DTC memories of the control modules.
^ Before selecting the transmission control module perform the automatic test sequence. Malfunctions of other control modules can influence the transmission control module. This is especially valid on vehicles with data bus.
^ Switch on ignition.





Indicated on display:
1) Is displayed alternately
^ Press key -1- for "Rapid data transfer" operating mode.
^ Switch on printer with the PRINT key (indicator lamp in key lights up).





Indicated on display:
^ Press key 4- twice; 00 enters the "Automatic test sequence" function.
^ Confirm entry with Q key.

Then all control module identifications, together with entries which may be in DTC memory, are displayed.
^ After test sequence, the V.A.G 1551 returns to the following start position:





Indicated on display:
1) appears alternately

Select automatic transmission control module
^ Switch on ignition.
^ Switch on printer with the PRINT key (indicator lamp in key lights up).
^ Press key 1 for "Rapid data transfer" mode.





Indicated on display:
^ Press keys 0 and 2. (Enter the address word "transmission electronics" with 02.)





Indicated on display:
^ Confirm entry with key Q.





Indicated on display:
The control module identification, the coding and the dealership number of the V.A.G 1551 are displayed:

Example for control module identification
Depending upon build level (program level) the control module can indicate a deferent control module identification, to that shown in the example. Allocation of control module => Parts catalog.
^ 01 P 927 733 Q: Part No.
^ AG4 Transmission 01 P: 4-speed automatic transmission 01P
^ 2937:EPROM (program level)
^ Coding 00000: is not required at present.
^ WSC 00000: V.A.G 1551 dealership number with which the last coding was performed.





Indicated on display:
^ By pressing the HELP key, a list of possible malfunction causes is printed out.
^ After eliminating the possible causes of malfunctions, again enter the address word 02 for "transmission electronics" and confirm.

If "Control module does not answer!" again appears:





Indicated on display:
Check control module voltage supply.
^ Perform test step 1, Electrical check.
Test Step 1

^ Check wiring connections to diagnostic sockets
=> Electrical Wiring Diagrams & Component Locations
=> DTC table, - under DTC 65535 control module malfunctioning!
DTC 65535

^ Press -> key.





Indicated on display:
^ After the HELP key is pressed, a list of the possible functions is printed out.





List of selectable functions
Further functions, which can be printed out by pressing the HELP key, need not be considered.
^ After checking a function the V.A.G 1551 returns to the following start position:





Indicated on display: