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Thread: VW Passat and ABS problem

  1. #1
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    VW Passat and ABS problem

    Hey!

    I'm looking at a VW Passat MY02 and its abs malfunction.

    The owner had driven with cool and damp weather their car until the distance between the instrument cluster to become the abs and traction control lights.

    Parts have been replaced / tested:
    - 2 pcs units of ABS (Brain and Hydraulics block)
    - 3 pcs brake pressure sensors
    - 1 pcs new brake pedal sensor
    - The current stationary abs unit has the following non-resettable fault code: 01435 - Brake Pressure Sensor 1 (G201) 57-00 - Electric Circuit Failure.
    - The other ABS unit had not received the coding by the car electrical repair.

    I run out of ideas for this problem. Anyone have any repercussions on how to stop the malfunctioning lights?

    Auto-Scan log
    Code:
    Tuesday,22,October,2019,19:02:01:00464
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 19.6.2.0 (x64)  HEX-V2 CB: 0.4508.4
    Data version: 20190930 DS308.0
    www.Ross-Tech.com
    
    Dealer/Shop Name: J.P
    
    VIN: WVWZZZ3BZ3P096336   License Plate: ABS PASSAT
    Mileage: 235650km-146426mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 3B (3B - VW Passat B5 (1997 > 2005))
    Scan: 01 02 03 08 15 16 17 19 35 36 37 46 47 55 56 57 58 75 76 77
             
     
    VIN: WVWZZZ3BZ3P096336   Mileage: 235650km-146426miles
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 06B-907-557-ALT.lbl
       Part No SW: 3B0 907 557 R    HW:             
       Component: 2.0L R4/5VS         0001  
       Coding: 0011501
       Shop #: WSC 00028 000 00000
       VCID: 382928F7BE4396C7317-5160
    
    No fault code found.
    Readiness: 0000 0000
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 4B0-614-517.lbl
       Part No: 4B0 614 517 G
       Component: ABS/ESP front       1728  
       Coding: 04275
       Shop #: WSC 00000  
       VCID: 2517F1831CF11B2F9A1-51F2
    
    2 Faults Found:
    01486 - System Function Test Activated 
                35-00 - -
    01435 - Brake Pressure Sensor 1 (G201) 
                57-00 - Electric Circuit Failure
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl
       Part No: 1C0 909 605 B
       Component: 0A AIRBAG VW51 04   0004  
       Coding: 12353
       Shop #: WSC 00028  
       VCID: 2313EF9B12C5E51FF45-513C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 3B0-920-xx5-17.lbl
       Part No: 3B0 920 827 
       Component: KOMBI+WEGFAHRSP VDO V08  
       Coding: 05115
       Shop #: WSC 00000  
       VCID: 619FA5934859B70FA69-513C
       WVWZZZ3BZ3P096336     VWZ7Z0B5569029
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
       Part No: 6N0 909 901 
       Component: Gateway K<->CAN    0001  
       Coding: 00006
       Shop #: WSC 00028  
       VCID: 70B9D0D793B30E87397-513C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels: 1C0-959-799.lbl
       Part No: 1C0 959 799 A
       Component: 6Z Komfortgerát HLO 0001  
       Coding: 00067
       Shop #: WSC 00094  
       VCID: 353721C3AC516BAF2A1-4B1E
    
       Subsystem 1 - Part No: 1C1959801
       Component: 6Z Tőrsteuer.FS KLO 0004  
    
       Subsystem 2 - Part No: 1C1959802
       Component: 6Z Tőrsteuer.BF KLO 0004  
    
    1 Fault Found:
    00929 - Locking Module for Central Locking; Front Passenger Side (F221) 
                27-00 - Implausible Signal
    
    End----------(Elapsed Time: 04:42, VBatt start/end: 13.6V/13.6V)-----------

  2. #2
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    Have You checked wiring from G201 to ABS module?
    What does MVB 005-3 shows?

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  4. #3
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    Quote Originally Posted by MartinsX View Post
    Have You checked wiring from G201 to ABS module?
    We have not yet checked the electrical connections.
    Does anyone know any websites, which could be studied electrical diagram of the VAG-Group's cars?

    What does MVB 005-3 shows?
    Code:
    Wednesday,23,October,2019,18:55:25:00464
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 19.6.2.0 (x64)  HEX-V2 CB: 0.4508.4
    Data version: 20190930 DS308.0
    www.Ross-Tech.com
    
    Dealer/Shop Name: J.P
    
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
                    Address 03: ABS Brakes  (4B0 614 517 G)
    
    18:55:19 Group 005
      -2.5°  Steering Angle Sensor (G85)
      0.00°/s  Rotation Rate 
      291.97 bar  Brake Pressure 
      0.00 m/s*2  Transverse Acceleration

  5. #4
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    Quote Originally Posted by V3lmu View Post
    Does anyone know any websites, which could be studied electrical diagram of the VAG-Group's cars?
    See:
    https://forums.ross-tech.com/showthread.php?5999

    -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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    Code:
                    Address 03: ABS Brakes  (4B0 614 517 G)
    
    18:55:19 Group 005
      -2.5°  Steering Angle Sensor (G85)
      0.00°/s  Rotation Rate 
      291.97 bar  Brake Pressure 
      0.00 m/s*2  Transverse Acceleration
    This looks like open/short to plus condition.

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  8. #6
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    Okay. So does this mean that the owner needs to start investigating the electrical connections more closely?

  9. #7
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    3 wires, approx 15cm long

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  11. #8
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    Sounds easy job

  12. #9
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    Problem solved!

    Original "repaired" abs unit, replaced by a workshop to another used abs unit. This is followed by coding to the original abs unit and calibration of the G85 sensor.

    There is strong suspicion that the original "repaired" abs unit was not correctly repaired.

    Prior to this operation, the power cords had been checked and there were power cords in good condition and voltages OK.

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