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ABS Output Tests

eca02apc Jan 16, 2012

  1. eca02apc

    eca02apc New Member

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    Hi All,

    Long-time viewer, new poster here!

    I've overhauled the brakes and performed a bleed of all 4 callipers, plus the clutch on my 2003 A4 1.8TQ, but the pedal still seems soft to me, with bite only starting around 1/4" from the top of the pedal. I suspect it may be due to air in the ABS module as the pedal firms up a little after doing a hard stop and making the ABS cut in.

    I would like to perform the ABS output test whilst bleeding the brakes again, but I can't get it to work :-( Using the output test just comes back with test complete immediately and without running the ABS pump or anything. I followed the Ross-tech guide but to no avail - same test complete problem.

    I've got a fully registered version of VAG-COM 409.1 but one of the cheap blue USB cables from eBay. Is this where my problem lies, or am I missing something?

    Many thanks for your help.
     
  2. NHN

    NHN Retrofitter - Audi - VW - Skoda - Seat Site Sponsor VCDS Map User

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    Check on Ross-techs site of comparison of products.
     
  3. eca02apc

    eca02apc New Member

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    Comparing interfaces or software version? Do you have a link?
     
  4. NHN

    NHN Retrofitter - Audi - VW - Skoda - Seat Site Sponsor VCDS Map User

    29,272
    1,685
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    Ross-Tech: VCDS: Function Table

    If still in doubt, contact RT to see if you require the better cable for the specific access to the tests you're doing, if so then give me a shout as I sell this interface.
     

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