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Fault memory: interrogating > < Technical data of self-diagnosis

Leon Mk2

Connecting fault reader V.A.G 1551 and selecting engine control unit
Connecting fault reader -V.A.G 1551- and selecting engine control unit
Special tools and workshop equipment required
   
t  Fault reader -V.A.G 1551-
  W00-0459
t  Cable -V.A.G 1551/3B-
  Note!
The vehicle system tester -V.A.G 1552- can be used instead of the fault reader -V.A.G 1551-, although a printout will not be possible in such cases.
Checking conditions
l  Battery voltage, OK
l  Fuse 21 OK
l  Earth connection between engine and gearbox, OK
Test sequence
–  Remove driver side shelf.
  W00-1038
–  Connect fault reader -V.A.G 1551- (or -V.A.G 1552-) with cable -V.A.G 1551/3B-.
After the fault reader has been connected, depending upon desired function:
–  Switch ignition on or start the engine → Anchor, table “Selectable functions”.
  Note!
t  If the display does not indicate the messages described in the work sequence: → Fault reader operating instructions.
t  If the message “Fault in the data transfer!” is displayed due to an input fault, remove wire from fault reader, reconnect it and repeat work sequence.
  N29-0030
Indicated on display:
  
V.A.G - SELF-DIAGNOSIS              HELP
1 - Rapid data transfer*
or
* appear alternately
–  Operate the fault reader taking into account the information on the display:
–  Press key 1 for “Rapid data transfer”.
–  Press keys 0 and 1 for address code “Engine electronics” and confirm entry with the Q key.
  
V.A.G - SELF-DIAGNOSIS              HELP
2 - Flash code output*
The control unit identification is shown in the fault reader -V.A.G 1551- display, for example:
t  028906021HA=control unit part number (for latest control unit version see Parts Catalogue)
t  1.9l = Engine displacement
t  R4 = engine architecture (4-cyl. in line engine)
t  EDC = injection system (Electronic Diesel Control)
t  SG = gear type: manual gearbox
t  1434 = version of control unit software
t  Coding 00005, coding variant
t  WSC xxxxx = Workshop code from -V.A.G 1551-, of the workshop who carried out the last coding. (If the factory coding has not been changed, WSC 00000 appears)
–  Press the → key.
  
028906021HA 1,9l R4 EDC SG       1434 ->
Coding 00005                     WSC0000
Indicated on display:
–  Continue in accordance with repair procedures.
  
Rapid data transfer                 HELP
Select function XX

Fault memory: interrogating > < Technical data of self-diagnosis