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Final control diagnosis > < Read measured value block

Leon Mk1

Work sequence
Work sequence
   
–  Remove the front cover from the fusebox.
–  Connect the fault reader -V.A.G. 1551- (-V.A.G. 1552-) with the lead -V.A.G. 1551/3B-.
With the fault reader connected:
–  According to the desired function: switch on the ignition or start the engine → Chapter, table “Selectable functions”.
  Note!
t  If no message appears on the display, test the voltage supply of the diagnosis connector → Current flow diagrams, Electrical fault finding and Fitting locations.
t  If the display does not show the messages indicated in the work sequence: → Instructions for use of the fault reader
t  If, due to keyboard error, the message “Data transmission error” appears, disconnect the fault reader lead, reconnect it and repeat the work sequence.
  N29-0029
Reading on display:
  
V.A.G. - SELF-DIAGNOSIS             HELP
1 - Rapid data transmission*
* appear alternately.
–  Operate the fault reader watching the reading on the display:
–  Press 1 for “Rapid data transmission”.
  
V.A.G. - SELF-DIAGNOSIS             HELP
                  2 - Flash code output*
Reading on display:
–  Press 0 and 1 for the address code “Engine electronics” and confirm the entry with the Q key.
  
Rapid data transmission             HELP
Enter address code XX
The display of the fault reader -V.A.G. 1551- shows the control unit identification, e.g.:
t  -036 906 034 L- = control unit reference no (see Spare parts catalogue for current version)
t  MARELLI 4LV = system and version designation
t  3038 = control unit software version
t  Encoding 00001 = control unit encoding
t  WSCxxxxx = repair shop identification the -V.A.G. 1551- with which last encoding was done. (As long as the factory encoding is not changed, display = WSC 00000.)
  Note!
If the control unit version corresponding to the vehicle is not displayed, replace the control unit → Anchor
–  Press →.
  
036 906 034 L  MARELLI   4LV   3038   → 
Encoding 00001                WSC XXXXX
Reading on display:
–  Continue according to the repair descriptions.
  
Rapid data transmission             HELP
Select function XX

Final control diagnosis > < Read measured value block