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Bruevich
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Joined: 12 Feb 2006
Posts: 235
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 Posted: Thu Apr 13, 2006 8:47 am Post subject: TDI VAG-COM FAQ |
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Q: What is VAG-COM?
A: VAG-COM is Windows-based software that allows a PC to act as a diagnostic tool for VW/Audi/SEAT/Skoda vehicles.
Q: That's great, so what can I do with it?
A: Well, here is a partial list:
01 Control Unit Info (means you can read your ECU's part number without pulling it out)
02 Read Fault Codes (aka DTC's, you can find out why your MIL - aka CEL - is on)
03 Output Tests (as part of troubleshooting procedures, you can turn on various actuators)
04 Basic Settings (lets you set readiness, perform various functions)
05 Clear Fault Codes (lets you get rid of the DTC's)
07 Code Module (lets you to set up the "BIOS" of a control module)
08 Measuring Blocks (lets you measure various running parameters)
10 Adaptation (lets you adapt or introduce components to one another)
11 Login (needed to access certain functions)
15 View Readiness (checks to make sure self-tests have been done, only applies to gassers)
Data Logging (you can save measuring blocks to a file - up to 3 groups of 4 at a time)
7-Digit PINs (used for new keys, instrument clusters, or new ECU's)
Q: So, specifically, as relates to my TDI, what can I do with it?
A: Note: The following advanced operations are intended for a stock 90-hp A4 TDI (ALH engine). Expect some variations if you have an A3/B4 car (A3 Jetta, Passat).
Air system part I: MAF
* Go into Engine measuring block 003
* Start Logging data
* In a high gear (4th/5th), give full throttle from 2500 rpm up to 3500rpm.
* Find and Open the Log file in Windows Explorer
* Graph MAF actual -vs- rpm in Excel
* The MAF is OK if the actual value is at least 850-900 mg/h at 3000 rpm.
Air system part I: Turbo
* Go to Engine Measuring Block 011
* Start Logging the data
* In a high gear (4th/5th) give full throttle from 1500-2000 rpm to 3500-4000 rpm
* Find and Open the Log file in Windows Explorer
* In Excel graph actual/requested boost -vs- rpm
* On a stock vehicle, one should see a spike at 2.1 bar quickly regulated at 1.9 through the whole rpm range
Setting Injection Timing:
The current Release of VAG-COM contains the TDI Timing Checker.
This procedure does NOT apply to the PD engines, which use a completely different type of EGR system and for which there is no known modification. !
* Engine has to be warm (coolant above 85ºC)
* Go to Engine Measuring Block 000
* Switch to Basic Settings
* Take note of the values in fields 2 (timing) and 9 (fuel temp)
* Report in the following graph
* Specification is within the shaded area between the blue and red lines
* To slightly advance timing, you need to be in the upper portion of the shaded area.
* Setting is done mechanically, slightly rotating the pump shaft once its three screws have been loosened.
* It is strongly discouraged to set your timing outside of the specification!
Special adaptations: Login code 12233:
These procedures do NOT apply to the PD engines!
* To perform the following adaptations (except idle) you need to use the Login function.
* Enter 12233 as a Login code.
* Misuse of some of the adaptations can lead to engine failure.
* This is done at your own risk!
* Note that the EGR setting is for off-road use only...
[Select]
[01 - Engine]
[Login - 11]
Enter 12233 to activate special adaptations,
[Do It!]
[Adaptation - 10]
Enter the "channel number" below to select each channel.
Put in the suggested value(s) in "new value".
[Test]
Observe the "test value" field to make sure the adaptation setting is acceptable.
[Save]
Channel 1: injected quantity
* Check the injected quantity at idle, engine warm and all power consuming devices turned off.
* Specification is 2.5 to 9 mg/h.
* To change the amount of injected fuel perceived by the ECU, go to adaptation channel 1.
* If you have driveability problems, you may want to increase it to 3-4 mg/h.
* For slightly improved throttle response, you may try to decrease the value.
Channel 2: idle speed
* No login required
* The stock adaptation value should be 32768 (corresponds to 903 rpm).
* Increase or decrease this to change idle speed.
Channel 3: EGR
* To decrease the EGR rate, increase the number to the highest possible value (typically 33768).
* This will prevent/slow down the intake manifold clogging problem and reduce smoke.
* Though the MAF at idle is still within specifications (370 mg/h) do not use this adaptation on the road 
* Again, this EGR setting is for off-road use only !!!
Channel 4:
* Don’t mess with it!
Channel 5: starting conditions
* Though undocumented, this channel effects the injected quantity the ECU allows when starting.
* You may want to experiment with it as a temporary fix for bad-start problems
Channel 18:
* On some EDC-15 ECUs, this channel has a non-zero value in it like 190.
* Yes, that's the "speed limiter". Don't mess with it!
* It can only be adjusted downward, and it's one-way! You cannot increase the value, and if you decrease it, you're stuck with it.
* So unless you want to permanently decrease your car's top speed, Don't mess with it!
* If you do mess with it and your car ends up with a lower top speed than it had before, don't call us, don't e-mail us, and don't complain that we didn't warn you!
Activating Cruise Control on a new ECU (DBW):
Factory fresh ECU's often come with cruise control de-activated.
[Select]
[01 - Engine]
[Login - 11]
Enter 11463 to activate cruise control
[Do It!]
Installing a new ECU:
Immobilizer II:
The immobilizer will prevent the car from running without a matching key microchip. There is a symbol in the instrument cluster showing a key inside a car. If a new (or different ECU) is installed in the vehicle, the immobilizer will prevent the car from running and will cause the symbol to flash. Here is the procedure to introduce a new ECU to the instrument cluster. This must be performed each time ECU's are exchanged. This does not apply to installing a "chip" in the same ECU that is already aligned with the car.
Immo-3 knows your car's VIN. Access 17-Instruments (or separate 25-Immobilizer on vehicles that are set up that way) and look at the first "Extra" field.
If you see something like: "Immo-ID VWZ7Z0W0648696" You've got Immo-2 (or maybe even Immo-1 in earlier non-US models).
If you see something like "WVZKB58001H231169 VWZ7Z0W0648696" You've got
Immo-3. The first 17-digit string is the VIN. The second 14-digit string in the Immo-ID.
1.Install the new ECU in the car
[Select]
[17 - Instruments]
[Adaptation - 10]
Leave channel at "00"
[Read]
[Save]
2.[Done, Go Back]
[Close Controller, Go Back - 06]
[Exit]
3.Turn ignition OFF for 15 seconds. Start vehicle.
Note: For cars with a separate Immobilizer (Includes 2000+ EuroVan, Cabrio, and many older non-US models), use [25 Immobilizer] instead of [17 - Instruments]. The rest of the procedure is the same.
Immobilizer III:
Some 2001+ Volkswagen/Audi vehicles have Immobilizer III. This works similarly to Immobilizer II, except a secret key code (SKC) is required in order to perform the adaptation routine. The routine changes depending on whether you are using a BRAND NEW ECU that has never been in any other car, or if you are using a USED ECU that has been previously matched to another car.
Immo-3 knows your car's VIN. Access 17-Instruments (or separate 25-Immobilizer on vehicles that are set up that way) and look at the first "Extra" field.
If you see something like: "Immo-ID VWZ7Z0W0648696" You've got Immo-2 (or maybe even Immo-1 in earlier non-US models).
If you see something like "WVZKB58001H231169 VWZ7Z0W0648696" You've got
Immo-3. The first 17-digit string is the VIN. The second 14-digit string in the Immo-ID.
Note: See this page for important SKC information.
There are different procedures for installing a NEW ECU or a USED ECU.
NEW:
1.Before Installing a BRAND NEW ECU in vehicle, get the ECM coding from the old ECU in the vehicle
[Select]
[01 - Engine]
Write down the 5-digit Soft. Coding
[Close Controller, Go Back - 06]
2.[17 - Instruments]
Write down the 14 digit Immobilizer ID number from the "Extra" field
[Close Controller, Go Back - 06]
3.Take that 14-digit Immobilizer ID number (along with your VIN number) to your dealer and request your seven-digit SKC, along with the workshop code and importer number (all this information can be found in the upper-right corner of the Administration screen of the dealer's VAS 5051). Additional information about how to find the WSC and Importer Number can be found here.
4.Install new ECU in the vehicle.
5.Measure the car's battery voltage, it must be 12.5 V or higher.
6.[Select]
[01 - Engine]
[Adaptation - 10]
Enter "50" in Channel Number
[Read]
[Use 7-digit PIN/SKC]
Enter the 7-digit PIN, Date on which the PIN was GENERATED BY THE DEALER, along with the dealer's Workshop Code (WSC) and the Importer number
[OK]
7.VAG-COM will validate the data you have entered and return you to the Adaptation screen, where the New Value will show as "XXXXX".
[Test]
[Save]
[Done, Go Back]
8.Verify that the VIN now displayed in the "Extra" field matches the VIN on the vehicle code from dealer
[Close Controller, Go Back - 06]
[Go Back]
[Exit]
9.Turn ignition OFF and then back on within one minute, but do not start vehicle for two minutes
After 2 minutes, start the vehicle
10.[Select]
[01 - Engine]
Verify that the 5-digit Soft. Coding matches the coding from the old ECU
11.[Fault Codes - 02]
Clear all DTC's.
USED:
1.Before Installing a USED ECU (we'll call it ECU #2) in vehicle, get the ECM coding from the current ECU (we'll call it ECU #1) in the vehicle
[Select]
[01 - Engine]
Write down the 5-digit Soft. Coding
[Close Controller, Go Back - 06]
2.Install the USED ECU (ECU #2) in vehicle, (the Immobilizer light will be flashing, that's okay for now)
[Select]
[01 - Engine]
Write down the 14 digit Immobilizer ID number from the "Extra" field. This the 14 digit Immobilizer ID number for ECU#2.
[Close Controller, Go Back - 06]
3.[17 - Instruments]
Write down the 14 digit Immobilizer ID number from the "Extra" field. This the 14 digit Immobilizer ID number for ECU#1.
[Close Controller, Go Back - 06]
4.Bring both 14-digit ID numbers to your dealer and request both your seven-digit SKC's
Keep track of the SKC for ECU#1 and the SKC for the ECU#2, as well as the Date on which each SKC was GENERATED BY THE DEALER, along with the dealer's Workshop Code (WSC) and the Importer number. Additional information about how to find the WSC and Importer Number can be found here.
5.Measure the car's battery voltage, it must be 12.5 V or higher.
6.With the USED ECU (ECU #2) in vehicle, (the Immobilizer light will be flashing, that's okay for now)
[Select]
[01 - Engine]
[Login - 11]
[Use 7-digit PIN/SKC]
Enter the 7-digit PIN from ECU #2, Date on which the PIN was GENERATED BY THE DEALER, along with the dealer's Workshop Code (WSC) and the Importer number
[OK]
[Do-It!]
(You just "introduced" yourself to ECU#2 and the ECU should listen to you since you knew how to login. The ECU is now ready to learn its new home.)
7.[Adaptation - 10]
Enter 50 in Channel Number
[Read]
[Use 7-digit PIN/SKC]
Enter the 7-digit PIN from ECU#1, Date on which the PIN was GENERATED BY THE DEALER, along with the dealer's Workshop Code (WSC) and the Importer number
[OK]
[Test]
[Save]
[Done, Go Back]
(You just told ECU#2 that it has a new home, and that it should make friends with the Instrument Cluster.)
8.Verify that the VIN now displayed in the "Extra" field in the Engine matches matches the VIN now displayed in the "Extra" field in the Instrument Cluster controller.
9.Turn ignition OFF and then back on within one minute, but do not start vehicle for two minutes
After 2 minutes, start the vehicle
10.[Select]
[01 - Engine]
Verify that the 5-digit Soft. Coding matches the coding from the old ECU
11.[Fault Codes - 02]
Clear all DTC's.
_________________
Don't argue with an idiot, he will bring you down to his level and beat you up with his own experience... |
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| Posted: Sun Apr 16, 2006 9:33 am Post subject: is CAN bus supported? |
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| what about can bus? |
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Bruevich
Moderator
Joined: 12 Feb 2006
Posts: 235
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| Posted: Sun Apr 16, 2006 9:33 am Post subject: |
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Q: What is CAN and why is it important?
A:
CAN stands for Controller Area Network. CAN is a new means of communicating with the car for diagnostics used by the latest generations of VW, Audi, SEAT, and Skoda vehicles. Unlike the older ISO9141 system which used a single K-line for diagnostic communications, the new CAN-Bus system uses a twisted pair of wires with differential signaling. CAN is considerably faster than ISO-9141 (500 kpbs vs. 10.4 kbps). Both new hardware and new software are required in order to communicate with cars using CAN for diagnostics.
Q: What Cars Use CAN for Diagnostics?
A: All Golf-5 platform cars (A5 platform) including:
2003+ VW Touran (1T chassis)
2004+ VW Golf (1K chassis)
2004+ VW Caddy (2K chassis)
2004+ Audi A3 (8P chassis)
2004+ Seat Altea (5P chassis)
2004+ Skoda Octavia (1Z chassis)
2005+ Seat Toledo (5P chassis)
2005+ Golf Plus (5M chassis)
2005+ Seat Leon (1P chassis)
2005.5+ Jetta (1K chassis)
2006+ Eos (1F chassis)
2003+ Audi A8 and A8L (D3 platform, 4E chassis)
2005+ Audi A6 (C6 platform, 4F chassis)
2005+ Audi A4 ("B7" platform) (some control modules)
2005.5+ VW Passat (B6 Platform, 3C chassis)
2006+ Audi Q7 (4L chassis)
_________________
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california car insurance
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| Posted: Mon Nov 20, 2006 6:29 am Post subject: california car insurance |
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| Nice site! |
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Harry
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| Posted: Tue Nov 21, 2006 4:23 pm Post subject: Harry |
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| It's very interesting site! |
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