VAG-COM help! please!!

[kr88]

hello all

im new to this forum! i drive a 2003 vw polo 1.4 when i go to the garage they always use vag-com on my car via a serial interface to diagnose my problem and they also charge a whopping £30 so i decided to buy the cable myself and save on the £30!

i purchased a cable off ebay its the famous one with the blue see through dongle with a blue led. Its not an original one.

its called VAG COM USB KKL 409.1 lead


im using vagcom 409.1 the one that came on the disk and the drivers. The problem is not with connecting the lead to the computer but its the problem of the message 'No Response from Controller'

this is the messgae i get when i test the cable in vagcom.

Port status - Ok
Interface - Found!!!
Type; Serial Pass-through
Opto/Iso - No
Ross Tech Design - No



When I try to connect to anything it says in the top left corner;
Int. Addr. 01, Baud 01, ITE 2
wait 2.0 seconds etc etc

It does that for about 4 times then it says 'No responce from...'

cant get my head around it!!! can anybody help me please? ive tried it with the ignition on, engine on, ignition off, etc etc ive even tried to change from COM 1 to COM 2/4 by applying the changes in device manager and vagcom and it says it can connect to the interface every time but when i click on 'engine module' it wont tell me nothing

im running it on a laptop with windows xp SP2, also i do have an after market head unit fitted (pioneer) but it was correctly installed by an professional dealer this should not be a problem as the garage can still use vagcom on it even after the head unit change.


happy new year btw

thanks alot

[STEWY L]

think you need to speak to eshrules. there's a thread on here i've been reading
and i think the problem may be the fact that the cable drivers won't self load or something with windows xp. have just read it somewhere on here today, but
it may have been and old thread as i've been all over on here today.
good luck.

[kr88]

hello mate

thanks for the reply, where can i find eshrules? the interface communicates with the computer but it wont connect to the ECU in the car says the controller blah blah blah, because when i do the COM port test it comes back as interface found.

thanks

[STEWY L]

hope i've done this right, have a read of this thread.
hope it helps
https://www.vwaudiforum.co.uk/forum/s...ad.php?t=21809

[kr88]

thanks for that, not sure if its the same problem though!

[Arge]

i've got exactly the same cable and exactly the same problem. did you find a solution?

[Baron_Samedi]

Is the car's ignition switched on when you attempt the check?

If not, I think only a few modules react - it's worth trying module 56 (radio) as it will talk to VAG-COM when the ignition is off.

Also, check the device manager in Windows to see which COM PORT is being used.

In my case Vista allocated COM3.

Oh and when I installed VAG-COM I right clicked the properties tab and checked "XP Service Pack 2 Compatibility"

[Arge]

Sorted - turned out to be the interface ports allocated by windows and and those set in VAG-COM didnt match. i changed them through device manager and it seems to be working. i put a guide for doing that at the link below if anyone is unsure.

https://www.vwaudiforum.co.uk/forum/s...ad.php?t=25112

[Stue]

I have had the same problems with a blue ebay lead
I think it is due to cheap serial port emulators.
I found that i could read some modules (eg radio) but not the useful ones.
Setting the initial baud rate in vag-com to 9600 gave some success.
I also tried a serial lead with a borrowed high quality (£200) usb port converter.
This worked straight away.
I think the ideal answer is a serial lead with a propper serial port, but these are rare on laptops now.

[Baron_Samedi]

Or, as others including Ross-Tech recommend, avoid using a USB to serial converter.