Passat B6 CBAB engine cut off while driving

   #1  

mirceaciuciuc

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Hello guys,

I have in my workshop one passat B6 with CBAB engine. The client came in the workshop because the engine while driving starts shuddering on half or full load intermittent and in some momments even cuts off.

Repair taking cared before he got to me: tank feed pump changed, high pressure, and high pressure feed pump also changed. Fuel rail regulator changed, also fuel filter changed, pipes and fuel tank drained and cleaned.

When he got to me I made him a quick drive test and suposed that injectors are failling so I have sent them to a proffesional workshop for further investigation on the test bench. They turned out all 4 to be out of specs specialy on the full load fuel debit side, realy out of range. I give it a go, ordered new ones from Bosch, replaced them, coded them and surprise, car behaves the same! No signifiant change. Also to mention the car has 615k km so it was clear that injectors could not have gone so many miles without breaking.

I also have noticed that when the engine cuts off after shuddering strong, the batt sign and check engine does not litt but just after pushing the clutch and the rpm drops to 0. It starts right away without no problem and keeps going till it shudders again and stals.

No fault codes stored before, during and after.
I can post an autoscan but there are no related faults stored in regards to this issue. Not even lost comunication erros for the engine ecu that can take you to a power interruption.

Could be a failing ecu or voltage regulators from the ecu that controls the injectors? This version has piezo injectors, a realy pain in the ass. Could be a loose conection somewhere that only makes intermittent interruption when on half/full load throtle?

Any input is highly apreciated as i have run out of options.
 
   #2  

Uwe

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If you have an Auto-Scan from this car (look in your Scans sub-folder) please post it. Context is always good.

-Uwe-
 
   #4  

mirceaciuciuc

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I don’t realy understand what you are saying. If you realy want to help somebody it is a good start not to condamn him first if he is doing something wrong.
 
   #5  

Jack@European_Parts

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I don’t realy understand what you are saying. If you realy want to help somebody it is a good start not to condamn him first if he is doing something wrong.


I asked a question sir, you are mistaken........and I pointed you toward a process tree for JPPSG .

Maybe it is you who should check their own process in thy head....no? <<<<<<< See that is a question?

???????????
 
   #6  

Jack@European_Parts

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Have you checked the terminal relays and ignition switch too........?

What about a wonky G28?

How is the harness where the idiots but a chafe point by the cylinder head and oil filter?
 
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   #7  

mirceaciuciuc

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I have checked electrical conections on the engine bay fuse panel because were with rust signs. Ignition switch was not checked. What issues can cause the ignition switch? I believe if the switch is faulty it shoul trow a fault...

My thoughts were also ar the G28 engine speed sensor but when the engine stalls the rpm gauge is still working

Now, good point about the stupid route of the harnes between the oil filter and engine block. Today left the shop with in mind that tomorrow I should check it out because: there is oil on the harness insulation. It is bended 90 degrees and it is verry close to the engine. May oil an extreme heat cause insulation problems/cracks that causing grounding short issues that is freezing the ECU? I know that piezo injector are working with high voltage up to 200V and also high frequency PWM
 
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Jack@European_Parts

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See now you are thinking correctly......Pictures! :popcorn:

Don't forget to report back and even though no scan has a DTC it helps others identify the configuration....I happen to know that an CBAB is like a 03L CBEA here in USA.

See now you made me think of Romania street racing and those very pretty girls there.

 
   #9  

mirceaciuciuc

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Below the Autoscan

Code:
Thursday,15,February,2018,17:30:30:28047
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 18.1.0.2 (x64)
Data version: 20180122 DS285.1
www.Ross-Tech.com


VIN: WVWZZZ3CZAE063720   License Plate: 
Mileage: 614880km-382068mi   Repair Order: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 3C-VW46 (3C0)
Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 53 56 77

VIN: WVWZZZ3CZAE063720   Mileage: 614880km-382068miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
56-Radio -- Status: Malfunction 0010
77-Telephone -- Status: Malfunction 0010
 
-------------------------------------------------------------------------------
Address 01: Engine (CBD)       Labels: 03L-906-022-CBA.clb
   Part No SW: 03L 906 022 BT    HW: 03L 907 309 
   Component: R4 2,0L EDC G000SG  5579  
   Revision: 13H02---    Serial number: VWZCZ000000000
   Coding: 0000071
   Shop #: WSC 84307 420 460358
   VCID: 78FF21EC0BBEC4858D-802C

1 Fault Found:
001649 - Cylinder 1 Glow Plug Circuit (Q10) 
               P0671 - 000 - Electrical Fault
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 614880 km
                    Time Indication: 0
                    Date: 2012.07.08
                    Time: 17:21:33

             Freeze Frame:
                    RPM: 943 /min
                    Speed: 0.0 km/h
                    Voltage: 14.14 V
                    Temperature: 9.9°C
                    Bin. Bits: 10110000
                    Time: 2.52 s
                    Temperature: 12.6°C

Readiness: 0 0 0 0 1 

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 3C0-614-109-C4.clb
   Part No SW: 3C0 614 109 AE    HW: 3C0 614 109 AE
   Component: J104    C4 440 V1   0015  
   Revision: --025---    Serial number: 00000795655996
   Coding: 0000260
   Shop #: WSC 05311 000 00000
   VCID: 61C96C88B824254DDA-8034

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 1K0-820-047.lbl
   Part No SW: 1K0 820 047 JP    HW: 1K0 820 047 JP
   Component: Climatic PQ35   143 1515  
   Revision: 00143034    Serial number: 00000000000000
   Shop #: WSC 00000 000 00000
   VCID: 7BF53EE03A88EF9DE0-802E

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels:. 3C0-937-049-30-H.lbl
   Part No SW: 3C8 937 049 E    HW: 3C8 937 049 E
   Component: Bordnetz-SG     H54 2602  
   Revision: 00H54000    Serial number: 00000003375806
   Coding: E1888F0700041A00470A00000F00000000095D435C000120000000000000
   Shop #: WSC 05124 000 00000
   VCID: 3365D6C05258E7DD78-8066

   Subsystem 1 - Part No: 3C1 955 419 B  Labels: 1KX-955-119.CLB
   Component: Wischer 100909 006  0208  
   Coding: 00046997
   Shop #: WSC 05124  

   Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
   Component: RLS     201009 054  0402  
   Coding: 00208936
   Shop #: WSC 05124  

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 5N0-959-655.lbl
   Part No SW: 5N0 959 655 J    HW: 5N0 959 655 J
   Component: J234__00H VW10 HI   1916  
   Revision: 20013000    Serial number: 003E2PMFZQDQ  
   Coding: 0012360
   Shop #: WSC 05311 000 00000
   VCID: 4487851C07F65065D1-8010

   Subsystem 1 - Serial number: 6332MTS687002729 

   Subsystem 2 - Serial number: 6342MTS614282719 

   Subsystem 3 - Serial number: 6351HTS64U4366KR 

   Subsystem 4 - Serial number: 6361HTS6FFM266KR 

   Subsystem 5 - Serial number: 00000000000000000

   Subsystem 6 - Serial number: 00000000000000000

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 3C0-953-549-SW25.lbl
   Part No SW: 3C0 953 549 BA    HW: 3C0 953 549 BA
   Component: J0527               0030  
   Revision: 00034000    Serial number: 3C9953507CL   
   Coding: 0000014
   Shop #: WSC 05314 000 00000
   VCID: 6CD70DBC4FE6782579-8038

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 3C8-920-xxx-17.clb-SRI1
   Part No SW: 3C0 920 872 B    HW: 3C0 920 872 B
   Component: KOMBI         H02 0206  
   Serial number: 00000000000000
   Coding: 161F00
   Shop #: WSC 05314 115 00000
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04040
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
   VCID: 2447259C2FB67065F1-8070

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 3C0-907-530-V3.clb
   Part No SW: 3C0 907 530 Q    HW: 3C0 907 951 
   Component: J533  Gateway   H13 0170  
   Revision:   H13       Serial number: 3420P09914006D
   Coding: F9801F06000602002002
   Shop #: WSC 05311 000 08193
   VCID: 2F6DDAB0BE70C33D1C-807A

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 3C0-959-433-25.clb
   Part No SW: 3C0 959 433 AQ    HW: 3C0 959 433 AQ
   Component:    IMMO         044 0383  
   Revision: 00044000    Serial number: VWZCZ000000000
   Shop #: WSC 131071 1023 2097151
   VCID: 79F924E830B4DD8DF2-802C

   Subsystem 1 - Part No: 3C0 905 861 H
   Component:    ELV          028 0380
   3C0905861H     ELV          028 0380   

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MIN3.clb
   Part No SW: 1K0 959 701 AR    HW: 1K0 959 793 N
   Component: J386  TUER-SG FT    1501  
   Revision: 72009005    Serial number: 00000791899010
   Coding: 0000053
   Shop #: WSC 05311 000 00000
   VCID: 7EF337F4299AFAB5C7-802A

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 5N1-909-144.clb
   Part No SW: 5N1 909 144 R    HW: 5N1 909 148 J
   Component: J500__APA-BS KL.0   1401  
   Revision: 1BH04739    Serial number: 00142730183601
   Coding: 0000258
   Shop #: WSC 00000 000 00000
   VCID: 41898C0818E4454DFA-8014

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. 3C0-959-433-46.clb
   Part No SW: 3C0 959 433 AQ    HW: 3C0 959 433 AQ
   Component:    KSG PQ46 ELV 044 0612  
   Revision: 00044000    Serial number: VWZCZ000000000
   Coding: 0091020851030E763004941570084B0E703C01
   Shop #: WSC 05311 000 00000
   VCID: 79F924E830B4DD8DF2-802C

   Subsystem 1 - Part No: 1K8 951 605 
   Component: LIN BACKUP HORN H10 9003

   Subsystem 2 - Component:       NGS n.mounted     

   Subsystem 3 - Component:      IRUE n.mounted     

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MIN3.clb
   Part No SW: 1K0 959 702 AR    HW: 1K0 959 792 N
   Component: J387  TUER-SG BT    1501  
   Revision: 72009005    Serial number: 00000893099012
   Coding: 0000052
   Shop #: WSC 05311 000 00000
   VCID: 7F0DCAF02E90F3BDCC-802A

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake        Labels: 5N0-907-801.clb
   Part No SW: 3C8 907 801 E    HW: 3C8 907 801 E
   Component: J540 EPB3  VW-15417 0007  
   Revision:   010       Serial number: 00000000053892
   Coding: 0000056
   Shop #: WSC 05311 000 00000
   VCID: 2C57CDBC8F66B82539-8078

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 5M0-035-1xx-56.clb
   Part No SW: 1K0 035 186 AA    HW: 1K0 035 186 AA
   Component: Radio RCD310  016 0049  
   Revision: 00000000    Serial number: VWZ1Z2K8081499
   Coding: 0500040004
   Shop #: WSC 01324 020 00200
   VCID: 65C178986C0C496D26-8030

1 Fault Found:
00871 - Bass Speaker Front Right (R23) 
            011 - Open Circuit
             Freeze Frame:
                    Fault Status: 01101011
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 158
                    Mileage: 614880 km
                    Time Indication: 0
                    Date: 2012.07.08
                    Time: 17:18:45


-------------------------------------------------------------------------------
Address 77: Telephone (J738)       Labels:. 1K8-035-730.clb
   Part No SW: 1K8 035 730 C    HW: 000 000 000 00
   Component: Telefon       H00 6600  
   Revision: 00000000    Serial number: 000000AA000000
   Coding: 003420
   Shop #: WSC 00000 000 00000
   VCID: 295934A84094AD0DC2-807C

1 Fault Found:
01524 - Antenna for Telephone 
            011 - Open Circuit
             Freeze Frame:
                    Fault Status: 01101011
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 158
                    Mileage: 614880 km
                    Time Indication: 0
                    Date: 2012.07.08
                    Time: 17:18:38


End-------------------------(Elapsed Time: 01:35)------------------------
 
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   #10  

Jack@European_Parts

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Well I'll tell you........... I'd be concerned with that glow fault & since it is a load device.
 
   #11  

mirceaciuciuc

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I checked the Glow plug. It has very high rezistance. Over 50 ohm’s , I don’t think it raises any problems that freezes the ECU.
 
   #12  

Jack@European_Parts

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Probably not but you never know with a possible damaged harness or fray.........


I have done repairs on that chafe point a few times and not on my own or existing customers cars, because when the car was new.......I put a buffer there with the forethought.

The engineer which designed that and or signed off on it at the line the day car was built .......should all be fired!
 
   #13  

mirceaciuciuc

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So, after inspection of the wire loom that passes by between the oil filter housing and engine block trough the injectors an fuel pressure valves, found that the main black heat protection for the wires was thered and one wire had friction signs till the bare wire and touching the cylinder head causing intermitent short to ground.

The wire, of course, belongs from the ramp regulator valve, thus causing engine shudering and after shut down for protection pourpose.

This explains why only on some cases of acceleration and vibrations, the engine stall.

Poor guy ( ECU) didn’t even had the time to trow any fault because he shuts down in a blink :))

Thank you in this case VW for such a good engineered wire path.

In conclusion, as Jack said , check the damn wire loom between the oil filter and the cylinder head/engine block, if you run on any problem like this or unexplainable issues ocurring.
 
   #14  

Jack@European_Parts

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This now makes the count "831" in my journal since I disclosed to Eric many years ago......

I imagine the number to start really increasing since numbers have ticked up more than double every year.


Now you know TDI God don't need no Starship! ;)

He needs spiral wrap.........!

sevengod_07.jpg
 
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