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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old March 1st, 2018, 09:52   #1
Dsmart
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Join Date: Dec 2008
Location: Sudbury
Default Can the TDI fry its own ecu? 2004 BEW scan attached

I was out running errands and the car failed to start (usually fires right up) it started second attempt but cranked much longer before doing so. Engine light came on and car is way down on power. Did a scan when i got home and its not looking good. The ecu is has a rocketchip 1.5 and has been flawless for the last 7 years. Everything else is stock. Car still runs but im not driving it as the likelihood of getting stranded seems high. Any insight??

Wednesday,28,February,2018,19:42:02:32264
VCDS Version: Release 11.11.3
Data version: 20120401



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


Chassis Type: 9M - VW Jetta IV
Scan: 01 02 03 08 09 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57
75 76

VIN: WVWSR21J74W165211 Mileage: 352370km/218952miles
-------------------------------------------------------------------------------
Address 01: Engine Labels: 038-906-016-BEW.lbl
Part No SW: 038 997 016 R HW: 028 101 114 6
Component: RC s01G EDC G000AG 0282
Revision: 12345678 Serial number: XXXXXXXXXXXXXX
Coding: 0150034
Shop #: WSC 00000 028 00001
VCID: 2D5B176DB70A1F1

7 Faults Found:
16725 - Camshaft Position Sensor (G40)
P0341 - 000 - Implausible Signal
Freeze Frame:
RPM: 882 /min
Torque: 40.0 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 13.98 V
Bin. Bits: 00001100
Idle Stabilization: 0.0KW
(no units): 48.0

19829 - Intake Manifold Change-Over Valve
P3373 - 000 - Open or Short to Ground
Freeze Frame:
RPM: 882 /min
Torque: 40.0 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 13.98 V
Bin. Bits: 00001100
Mass Air / Rev.: 450.0 mg/str
Absolute Pres.: 948.6 mbar

16629 - Solenoid Valve for Boost Pressure Control (N75)
P0245 - 000 - Short to Ground
Freeze Frame:
RPM: 882 /min
Torque: 40.0 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 13.98 V
Bin. Bits: 00001100
Absolute Pres.: 1030.2 mbar
Absolute Pres.: 948.6 mbar

19794 - Control Circuit for Glow Plug Controller 1
P3338 - 000 - Electrical Malfunction
Freeze Frame:
RPM: 882 /min
Torque: 40.0 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 13.98 V
Bin. Bits: 00001100
Temperature: 41.4C
Bin. Bits: 11111111

19557 - Motor for Intake Manifold Flap (V157)
P3101 - 000 - Open or Short to Ground
Freeze Frame:
RPM: 882 /min
Torque: 40.0 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 13.98 V
Bin. Bits: 00001100
Torque: 166.0 Nm
Torque: 0.0 Nm

19559 - Motor for Intake Manifold Flap (V157)
P3103 - 000 - Malfunction
Freeze Frame:
RPM: 882 /min
Torque: 38.0 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 13.98 V
Bin. Bits: 00001100
Torque: 148.0 Nm
Torque: 0.0 Nm

16705 - Engine Speed Sensor (G28)
P0321 - 000 - Implausible Signal
Freeze Frame:
RPM: 0 /min
Torque: 24.0 Nm
Speed: 0.0 km/h
Load: 0.0 %
Voltage: 11.63 V
Bin. Bits: 00001100
Idle Stabilization: 0.0KW
RPM: 504 /min

Readiness: 1 5 1 1 1

-------------------------------------------------------------------------------
Address 02: Auto Trans Labels: 09A-927-750.lbl
Part No: 09A 927 750 AM
Component: AG5 Getriebe 09A 0251
VCID: 76E9F80152DC1C9

2 Faults Found:
00529 - Engine Speed Signal Missing
03-00 - No Signal
01166 - Engine Torque Signal
03-00 - No Signal

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 1C0-907-37x-ABS.lbl
Part No: 1C0 907 379 L
Component: ABS FRONT MK60 0101
Coding: 0001025
Shop #: WSC 01266 785 00200
VCID: 336F0115512E491

1 Fault Found:
01314 - Engine Control Module
013 - Check DTC Memory

-------------------------------------------------------------------------------
Address 15: Airbags Labels: 6Q0-909-605-VW5.lbl
Part No: 1C0 909 605 A
Component: 0G AIRBAG VW51 02 0008
Coding: 12359
Shop #: WSC 01266
VCID: 2241F451AED4D09

1 Fault Found:
00532 - Supply Voltage B+
07-10 - Signal too Low - Intermittent

-------------------------------------------------------------------------------
Address 16: Steering wheel Labels: 1J0-907-487-A.lbl
Part No: 1J0 907 487 A
Component: Lenkradelektronik 0005
Coding: 00118
Shop #: WSC 01266
VCID: 2F670D65ED066D1

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments Labels: 1J0-920-xx5-17.lbl
Part No: 1J5 920 806 R
Component: KOMBI+WEGFAHRSP VDO V03
Coding: 15334
Shop #: WSC 00000
VCID: 3B7F2935297E811
WVWSR21J74W165211 VWZ7Z0C8827542

1 Fault Found:
01177 - Engine Control Unit
64-10 - Not Currently Testable - Intermittent

-------------------------------------------------------------------------------
Address 19: CAN Gateway Labels: 6N0-909-901-19.lbl
Part No: 6N0 909 901
Component: Gateway K<->CAN 0001
Coding: 00006
Shop #: WSC 01266
VCID: F0E54E19B0B8B29

No fault code found.
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Old March 1st, 2018, 09:55   #2
oilhammer
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Well certainly anything is possible, but since you can still communicate with it I would suggest checking all the fuses and all the grounds first, as well as checking the connection to the ECU itself, as a lot of times if the cowl cover is damaged water can get in there and cause all sorts of problems. So can critters.

You may also take a look over the engine management wiring diagram and see if there are any common power or ground feeds to the various things listed.

And as always, check the power and grounds from the battery.
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Old March 1st, 2018, 10:00   #3
mjydrafter
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Besides oilhammer's suggestions, how old is the battery?

With that number of codes I would check for a bad battery 1st, just because it's easy to check/get checked.

If that isn't it, I would suggest digging into the wire harness down by the battery. This could also be one of the wire chaffing problems.
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Old March 1st, 2018, 10:23   #4
Dsmart
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Location: Sudbury
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The battery is a fairly new AGM and seems pretty good but the car has been put on light duty as we have 2 others vehicles that fit the car seats better so it does sit for a week at a time with no use. It has been pretty slushy here so its possible that there is moisture in the ecu connector. Also possible that a ground had rusted off but how would it still run with either blown fuses related to those circuits or no ground? Its almost like the parameters that were adjusted for the tune are scrambled based on the faults. Anyways thanks for the insight. ill report my findings as I dig deeper
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Old March 1st, 2018, 10:58   #5
BobnOH
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Location: central Ohio
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Start with the assumption that the ECU is fine, they rarely "fry". Seems the battery is good. Weak batteries can cause odd issues.
Go with this- #2
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Old March 1st, 2018, 11:12   #6
Dsmart
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Location: Sudbury
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I have another untuned ecu that I can plug in to see if the faults remain or go away. The only thing is that it doesnt have an immo delete. For the purpose of testing though the immo might not matter.
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Old March 1st, 2018, 11:26   #7
arniewallace
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Fuse blown, too many faults to do with solenoids, check fuse 34. All those items are fed from that fuse, and the reason it turning over so much to start is that its getting no signal from the camshaft sensor. Probably a cable worn through at the rear of the intake for anti shudder valve.
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Old March 1st, 2018, 12:06   #8
Dsmart
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Quote:
Originally Posted by arniewallace View Post
Fuse blown, too many faults to do with solenoids, check fuse 34. All those items are fed from that fuse, and the reason it turning over so much to start is that its getting no signal from the camshaft sensor. Probably a cable worn through at the rear of the intake for anti shudder valve.

Bingo! fuse 34 was blown. Just came inside to report that and saw your post...replaced and all is well. Ill have to check the harness you indicated to see if its rubbed through. Thanks to everyone for the help.
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Old March 1st, 2018, 19:37   #9
wonneber
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Glad you found the problem.
It might be worth the time to clean the ground wire from the battery to under the battery tray, to the trans.
The one under the battery tray has been mentioned numerous times.
All the devices in the car that ground to the body rely on that one to complete the circuit back to the battery.
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Old March 7th, 2018, 19:37   #10
jsrmonster
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RC still running strong after 7 years!

Recently had RC (s01G) 7v gp fix / upgrade.

Happy motoring.
;-))
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