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Thread: Unable to read block 50

  1. #1
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    Unable to read block 50

    hi, new user
    had unregistered lite for a while, works well, reads codes and blocks up to about block 20

    i'm chasing a hot start issue, which may be due to a flakey cam sensor. (after standing for 10 minutes after being fully up to temperature, it has a long crank, when cold it fires up almost instantly, its quite repeatable)

    I bought a registered version to look at the crank and cam signals when its doing the long crank thing, these are held in block 50 of full VCDS, there are a few threads on tdiclub showing VCDS screen shots

    but I cannot display block 50, I get a message saying unable to display,
    any idea how I can look at the crank and cam speeds?
    vehicle is 2002 Audi A3, 1.9TDI, with PD engine, AZS I believe, 130 hp

    thanks in advance

  2. #2
    Benevolent Dictator Uwe's Avatar
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    Please post an Auto-Scan so we can see exactly what ECU you have.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  3. #3
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    indeed, i thought you might ask, two known faults, loudspeaker open circuit and alarm horn no comms

    Code:
    VCDS-Lite Version: Release 1.2
    Thursday, 18 October 2018, 17:24:57:14371
    
    
    Chassis Type: 8L - Audi A3/S3
    Scan: 01,02,03,08,15,16,17,22,35,37,45,55,56,57,75,76
     
    -------------------------------------------------------------------------------
    Address 01: Engine       Labels: 038-906-019-ASZ.LBL
       Controller: 038 906 019 FT
       Component: 1,9l R4 EDC 0000SG  1527
       Coding: 00002
       Shop #: WSC 06435
       VCID: 6EAF7598398F
       WAUZZZ8LX2A074665     AUZ5Z0B2237042
    No fault code found.
    Readiness: N/A
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes       Labels: None
       Controller: 1C0 907 379 G
       Component: ESP FRONT MK60      0101
       Coding: 0019970
       Shop #: WSC 06435
       VCID: 2E2FB598F90F
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC       Labels: Redir Fail!
       Controller: 8L0 820 043 H
       Component: A3  KLIMAAUTOMAT   0105
       Coding: 00041
       Shop #: WSC 06435
       VCID: 2D2DB294F409
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags       Labels: 8L0-959-655-AI8.LBL
       Controller: 8L0 959 655 L
       Component: Airbag Front+Seite 7008
       Coding: 01104
       Shop #: WSC 06435
       VCID: 47E1E03C76B5
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments       Labels: 8L0-920-xxx-17.LBL
       Controller: 8L0 920 950 D
       Component: KOMBI+WEGFAHRS. M73 D03
       Coding: 04440
       Shop #: WSC 00000
       VCID: 3115AEE4E831
       WAUZZZ8LX2A074665     AUZ5Z0B2237042
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 35: Centr. Locks       Labels: 8D0-862-257.LBL
       Controller: 8D0 862 257 E
       Component: CV-Pump, Alarm, RC  D17
       Coding: 15178
       Shop #: WSC 06435
       VCID: 2F11A89CFE05
    1 Fault Found:
    01134 -  Alarm Horn (H12)
                49-00 -  No Communications
    
    -------------------------------------------------------------------------------
    Address 45: Inter. Monitor       Labels: 4B0-951-173.LBL
       Controller: 4B0 951 173 
       Component: Innenraumueberw.    D03
       Coding: 00001
       Shop #: WSC 00000
       VCID: E0B39BA0735B
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio       Labels: 8E0-035-1xx-56.LBL
       Controller: 8L0 035 186 G
       Component: concert II  GRO    0008
       Coding: 00001
       Shop #: WSC 06435
       VCID: 3217A1E8ED37
    1 Fault Found:
    00852 -  Loudspeaker(s); Front
                36-00 -  Open Circuit
    
    End   --------------------------------------------------------------------------------------------------
    Last edited by Uwe; 10-18-2018 at 03:50 PM. Reason: CODE tags

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  5. #4
    Benevolent Dictator Uwe's Avatar
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    So what makes you think that this ECU should have an MVB Group 050?

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  6. #5
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    i have seen threads in other forums where users with vcds have been looking at block 50 to see the crank and cam speeds, on similar engines
    /m

  7. #6
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by newbs View Post
    i have seen threads in other forums where users with vcds have been looking at block 50 to see the crank and cam speeds, on similar engines
    /m
    "Similar Engines" doesn't mean much.

    Got a link to such a thread?

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  8. #7
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    sorry for the late response

    the thread I was looking at was referencing a BEW engine, but from 2003. although this is "similar" in that its a PD engine and this wicki puts them as the same general type (https://en.wikipedia.org/wiki/List_o...diesel_engines), it is unlikely that thy will have the same MVB's, as the BEW seems to be a good few years later than the AZS.

    is there a list of available MVB's for each engine?

    I think I may have found the issue as I managed to catch one of the long crank events whilst logging, showed up no engine speed in MVB 01, but there was an engine speed registering when it was cold.

  9. #8
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by newbs View Post
    the BEW seems to be a good few years later than the AZS.
    Right, and built to a totally different regulatory standard.

    Quote Originally Posted by newbs View Post
    is there a list of available MVB's for each engine?
    What's in a label file such as the one VCDS is using for your engine (038-906-019-ASZ.LBL) is generally everything that VW had documented for that engine, plus possibly some additional info that users have documented.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

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  11. #9
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    thanks Uwe
    I think I may have been misdirected on the diagnosis

    when cranking, the engine speed was zero because the comms to the ecu stopped during the crank time amd started again when the cranking stopped.

    I just just ran a ttest where I unplugged the trigger wire to the starter, put the key in crank position and coms are ok i.e. the ecu was receiving power when key was in crank

    this suggests a voltage drop during the crank is doing something to the ecu, have you seen this before?

    just off to check power and grounds to the ecu

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