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Thread: VCDS Fails To Communicate With Any Controllers

  1. #1
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    VCDS Fails To Communicate With Any Controllers

    Hello

    This is all on my 2004 mk4 R32

    I'm fairly new to VCDS/Hex-V2 so I'm not sure if I'm doing something wrong here. I have used VCDS a few times and didn't have any problems over the last few weekends but today, I attempted to use it with the intent to bleed my ABS pump but keep getting KLine Init Failed with a "No Response From Controller" error no matter what controller I try to access. When I run an auto scan, it doesn't communicate with any controllers. The results screen only displays the controllers it attempted to reach and the amount of time it took to run the scan, VBat voltage etc. and nothing else.

    I have tried quite a few different things to get it to work but my result is the same every time. So far I have tested voltage at the OBDII port between pin 4 and 7. Initial testing gave me a voltage reading of 12.6, I then tried it with a 1k Ohm resistor in parallel with my probes and got a voltage reading of 8.9 VDC or so. I don't know what the 8.9 VDC reading means given this isn't one of the listed results from the Aftermarket Radio Problem page of the FAQ. Oh, I initially had an aftermarket radio installed but after running this test, I decided to reinstall the OEM radio just to eliminate that possibility.

    The last controller I successfully accessed (last weekend) was the ABS Pump. I was going to bleed it at that time but didn't have enough fluid to complete the task so I shut everything down and left it for the week. Given I last accessed the ABS Pump I thought I might of some how messed that up so I disconnected it and reattempted to run auto scan, with the same result as before.

    I have tried a few other things such as disconnecting and reconnecting the battery, power cycling the computer, adjusting my power plan as per the FAQ, updating to the latest firmware, changing USB ports, etc, etc... all with the same result.

    Here is a copy of my last SUCCESSFUL auto scan (from last weekend when everything was working):

    Code:
    Monday,27,May,2019,16:04:23:22235
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 18.9.1.0 (x64)  HEX-V2 CB: 0.4437.4
    Data version: 20190114 DS296.0
    www.Ross-Tech.com
    
    
    VIN: WVWKG61J14D131015   License Plate: 
    Mileage: 79530km-49417mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 1J (1J - VW Golf/Bora IV (1998 > 2006))
    Scan: 01 02 03 08 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57 75
              76
     
    VIN: WVWKG61J14D131015   Mileage: 79530km-49417miles
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 022-906-032-BJS.lbl
       Part No SW: 022 906 032 EG    HW: 144 03
       Component: MOTRONIC ME7.1.1G   5626  
       Coding: 0000132
       Shop #: WSC 31414 000 00000
       VCID: 54F17EE652EE22176A5-5160
    
    1 Fault Found:
    16518 - Oxygen (Lambda) Sensor B1 S1 
                P0134 - 008 - No Activity - Intermittent
    Readiness: 0000 1000
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 1C0-907-37x-ESP-A.lbl
       Part No: 1C0 907 379 P
       Component: ESP ALLRAD MK60     0101  
       Coding: 0023049
       Shop #: WSC 31414 000 00000
       VCID: 372B296AE358E90F6F7-5160
    
    1 Fault Found:
    01324 - Control Module for All Wheel Drive (J492) 
                004 - No Signal/Communication
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 3Bx-907-044.lbl
       Part No: 3B1 907 044 C
       Component: CLIMATRONIC     C 2.0.0  
       Coding: 11200
       Shop #: WSC 31414  
       VCID: 211FE73258DC87BFB13-51A8
    
    3 Faults Found:
    00792 - A/C Pressure Switch (F129) 
                35-00 -  - 
    00281 - Vehicle Speed Sensor (G68) 
                37-10 - Faulty - Intermittent
    01274 - Air Flow Flap Positioning Motor (V71) 
                37-10 - Faulty - Intermittent
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl
       Part No: 1C0 909 605 F
       Component: 17 AIRBAG VW61 0108 0003  
       Coding: 12599
       Shop #: WSC 31414  
       VCID: 270BF92A36F8798FFF7-513C
    
    1 Fault Found:
    00532 - Supply Voltage B+ 
                07-10 - Signal too Low - Intermittent
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 1J0-920-xx5-17.lbl
       Part No: 1J0 920 927 A
       Component: KOMBI+WEGFAHRSP VDO V03  
       Coding: 15230
       Shop #: WSC 00000  
       VCID: 290FFF1220EC4FFFE93-513C
       WVWKG61J14D131015     VWZ7Z0C8829809
    
    2 Faults Found:
    01336 - Company Data Bus for Comfort System 
                49-10 - No Communications - Intermittent
    01304 - Radio 
                49-00 - No Communications
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
       Part No: 6N0 909 901 
       Component: Gateway K<->CAN    0001  
       Coding: 00006
       Shop #: WSC 31414  
       VCID: 70B9D276C3B67E376ED-513C
    
    3 Faults Found:
    01336 - Company Data Bus for Comfort System 
                49-10 - No Communications - Intermittent
    01304 - Radio 
                49-00 - No Communications
    01324 - Control Module for All Wheel Drive (J492) 
                49-00 - No Communications
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels: 1C0-959-799.lbl
       Part No: 1C0 959 799 C
       Component: C7 Komfortgerát HLO 0003  
       Coding: 00064
       Shop #: WSC 31414  
       VCID: 372B296AE658E90F6F7-4B1E
    
       Subsystem 1 - Part No: 1C1959801A
       Component: C7 Tőrsteuer.FS KLO 0202  
    
       Subsystem 2 - Part No: 1C1959802A
       Component: C7 Tőrsteuer.BF KLO 0202  
    
    5 Faults Found:
    01330 - Central Control Module for Central Convenience (J393) 
                53-10 - Supply Voltage Too Low - Intermittent
    01299 - Diagnostic Interface for Data Bus (J533) 
                49-10 - No Communications - Intermittent
    01331 - Door Control Module; Driver Side (J386) 
                53-10 - Supply Voltage Too Low - Intermittent
    01332 - Door Control Module; Passenger Side (J387) 
                53-10 - Supply Voltage Too Low - Intermittent
    01359 - Internal Central Locking Switch; Passenger Side (E198) 
                27-10 - Implausible Signal - Intermittent
    
    End----------(Elapsed Time: 04:56, VBatt start/end: 12.1V/12.3V)-----------
    And here is a screen cap of the Test popup (looks normal to me):


    LED Behavior:
    Plugged into laptop but not into car: on blue for about a second and then off for about 1/2 a second
    Plugged into car, ignition on, plugged into computer: on green for about a second and then off for about 1/2 a second
    While attempting to access controllers/run a scan: solid green
    At one point, I plugged the Hex-v2 into the port with ignition already on and got an alternating red/green LED with a momentary beep coming from the dongle.

    If any other information is needed, please let me know.

    Thanks for the help,
    Andy
    Last edited by Boki Ar; 05-31-2019 at 04:02 PM. Reason: Add screen shot

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  3. #2
    VCDS Distributor Boki Ar's Avatar
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    Lightbulb

    Hi Andy,

    please try to remove radio, i suspect on K line stuck caused by him.

  4. #3
    Ross-Tech Employee Dana's Avatar
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    Hi Andy,

    Although the Port test appears to be normal to me as well, the momentary beep might have been a shorted K-line. I see 2 issues that may explain the lack of communication with the car.

    1) The Haldex (Address 22-AWD) was offline in the good scan. That's a Powertrain module so it could take down the 01-Engine, 03-ABS, etc. I would unplug the Haldex and see if the communication is restored.
    2) The Central Control Module for Central Convenience (J393) voltage code combined with 01336 - Company Data Bus for Comfort System - No Communications - Intermittent may be a sign that the comfort bus has a problem. I wouldn't get excited about that until you see if unplugging 22 improves the situation.

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  6. #4
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by Boki Ar View Post
    Hi Andy,
    please try to remove radio, i suspect on K line stuck caused by him.
    I do not think the K-Line goes to the radio harness anymore in 2004.

    -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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  8. #5
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    Quote Originally Posted by Uwe View Post
    I do not think the K-Line goes to the radio harness anymore in 2004.

    -Uwe-
    It does. Gray/white line on T8/3

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  10. #6
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    Quote Originally Posted by Dana View Post
    Hi Andy,

    Although the Port test appears to be normal to me as well, the momentary beep might have been a shorted K-line. I see 2 issues that may explain the lack of communication with the car.

    1) The Haldex (Address 22-AWD) was offline in the good scan. That's a Powertrain module so it could take down the 01-Engine, 03-ABS, etc. I would unplug the Haldex and see if the communication is restored.
    2) The Central Control Module for Central Convenience (J393) voltage code combined with 01336 - Company Data Bus for Comfort System - No Communications - Intermittent may be a sign that the comfort bus has a problem. I wouldn't get excited about that until you see if unplugging 22 improves the situation.
    Ok, I got under the car and disconnected the Haldex module. While I was there I noticed the ground strap going from the body to the Haldex was corroded all the way through and broken. Also, the pins of the connector were very corroded. After it was disconnected, I was able to get the Hex-V2 to communicate and was able to bleed my ABS pump. Going to repair the ground strap and clean the connectors for the Haldex module and reconnect it, hopefully this will fix the issue.

    Thanks for the help!

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