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Fabia Mk1

Connecting vehicle system testerV.A.G 1552 and selecting the control unit for air conditioning system
Connecting vehicle system tester -V.A.G 1552- and selecting the control unit for air conditioning system
Special tools and workshop equipment required
t  Vehicle system tester -V.A.G 1552 -
t  Diagnostic cable -V.A.G 1551/3 - or -V.A.G 1551/3 A-
Work procedure
The diagnostic connection is located on the left next to the storage compartment on the driver's side.
–  Fold down the cover.
   
–  Connect the vehicle system tester -V.A.G 1552- with the diagnostic cable -V.A.G 1551/3- or -V.A.G 1551/3 A -.
–  Switch on ignition.
–  Operate the vehicle system tester by referring to the read-out on the display.
  S01-0087
Readout on display:
  Note
t  If because of an input error “data transfer fault” is displayed, remove the cable from the vehicle system tester, re-connect and repeat the steps.
  
Vehicle system test               HELP
Enter address word XX
t  If one of the following messages appears in the display, carry out fault finding as specified in the fault finding program diagnostic cable: → Current flow diagrams and Fitting locations or → Operating Instructions of vehicle system tester.
  
Vehicle system test               HELP
The control unit does not respond
  
Vehicle system test               HELP
Fault in communication set-up
  
Vehicle system test               HELP
K cable does not connect to earth
–  Select address word 08 for “heating/air conditioning electronics”.
  
Vehicle system test               HELP
K cable does not connect to pos. term.
The vehicle system tester -V.A.G 1552- displays the control unit identifications, e. g.:
t  6Y0820045 = Part No. of the control unit (for current control unit version see spare parts catalogue)
t  Air conditioning = system denomination
t  X0731 = Data status (Software version of the control unit)
–  Press →.
  
6Y0820045    Air conditioning   X0731 ->

      

      

    
      

      

    
Readout on display:
– 
          Further procedure, see repair sequences.

      		 
      
    
Vehicle system test               HELP
The control unit does not respond
Vehicle system test               HELP
Select function XX

      

      

    


Self-diagnosis functions >
< Initiating self-diagnosis