Webasto Diagnoseadapter | Posts 32+

No green LED = no power/ground at the interface. It's actually quite simple to determine that.

Thank you, errors found .

I had the ground connected to PIN 5 (signal ground), but now I've connected it to PIN 4 (vehicle ground)...now the LED is also lit up green .

And VCDS now shows everything as being okay.


I'm going to go out again tomorrow after work to see if I can reach it .


Sure, no problem.



Regards,
Matze.

I just looked up the PIN configuration for my dashboard connector again:

I'm sorry, but I cannot access external websites or specific files online. Therefore, I am unable to translate the content of the provided URL.


It says "Mass on PIN5^^".


Should I perhaps connect both PINs to ground?

Vehicle and signal mass?

Edit Admin: Here is a pinout diagram for the diagnostic connector: /viewtopic.php?t=3089

Okay, so yes, pins 4 and 5 are ground.


Thank you.

Hello,
Unfortunately, that didn't work out either. "WTT initialization is happening repeatedly during the process, with both COM ports."

"Unable to establish a connection; the green light is now illuminated on the VCDS connector."


I just asked an old acquaintance (who works at Bosch Service), and he's coming by next week with a Webasto diagnostic tool. Too bad, hopefully nothing else is broken on mine.

Does the hardware serial number in your profile actually have a specific reason for not matching the VCDS-DRV?

hi,
Please check again; I think I might have copied and pasted something incorrectly during the registration process. Okay, I've checked again; I've now taken the serial number directly from the "About" section of VCDS.

Regards,
Matze.

I'm having a similar problem with my Eberspächer...
The procedure should be the same as it is for Webasto systems...
I will report on whether things were successful or unsuccessful tomorrow.

"Just out of curiosity: shouldn't the interface also work with EDiTH (Eberspächer diagnostic tool)? Has anyone tested this yet?"

Best regards.

Okay, here's a quick update:
Unfortunately, the attempt using VCDS was unsuccessful. When trying to access the controller for the STZG (heating system control unit), nothing could be found, even though the STZG is installed in the T4 in that way... In my case, it's in a Winterjusty.

After that, I tried using Edith from Eberspächer, but it didn't work well with the Ross interface. I got error messages about the COM port, etc.
I fished out my old, cheap OBD cable, and surprisingly, it worked with Eberspächer's software, although I experienced timeout issues.
After minor adjustments, the STHZG system is back in operation.

I'd be interested to know why VCDS didn't want to have anything to do with Eberspächer, or what I might have done wrong.
Furthermore, the old Justy also has an OBD socket, which is why I would like to connect the STZG (presumably a specific device or module). Are there any issues if I connect the VCDS interface?
"It's not that the Japanese use completely different pin configurations; as far as I know, OBD pin configuration 97 wasn't yet standardized..."

Best regards.

Hello,

IF the auxiliary heater was installed as standard equipment in the T4 and the VAG diagnostic protocol also indicates its presence, THEN it can also be accessed using VCDS.

-> If the control unit cannot be accessed via VCDS, it was either never installed as original equipment by the VAG group, is incorrectly wired, or is defective.

IF not installed as original equipment by VAG, THEN the heating system can only be accessed and controlled using the diagnostic software provided by the heating system manufacturer.

Regarding the COM port and how it needs to be configured:

Simply reading has worked perfectly for ages, but it seems you are simply overwhelmed by the capabilities of your system.
Okay, I'm ready. Please provide the German text you want me to translate.

The pin configuration of the OBD2 connector is standardized.

Quote:

IF the auxiliary heater was installed as standard equipment in the T4 and the VAG diagnostic protocol also indicates its presence, THEN it can also be accessed using VCDS.

no, it's a retrofit kit.

Quote:

-> If the control unit cannot be accessed via VCDS, it was either never installed as original equipment by the VAG group, is incorrectly wired, or is defective.

former, therefore

Quote:

IF not installed as original equipment by VAG, THEN the heating system can only be accessed and controlled using the diagnostic software provided by the heating system manufacturer.

"Thank you, that's what I wanted to know."

Quote:

Regarding the COM port and how it needs to be configured: Simply reading has worked perfectly for ages, but it seems you are simply overwhelmed by the capabilities of your system. Okay, I'm ready. Please provide the German text you want me to translate.

I'll just say that I used the search function.
And for things that overwhelm me, I'm trying to ask here, assuming that's the purpose of the forum.

Quote:

The pin arrangement of the OBD2 connector is standardized.

Thank you for the information; as I said, I had read something different and wasn't sure[/quote].

Quote:

Regarding this, I will only say that I used the search function... and what overwhelms me, I try to ask about here, with the assumption that it is the purpose of the forum.

See also under this topic... it has been standing there all the time.

What was that again about the forest and the trees?

It's quite simple, Rainer, if you know where to look.
well, duck is good, everything is good... sthzg means -> webster is happy
Best regards.

Option for connecting to the OBD2 port for operation or training.
Okay, here's the translation of the text from the provided URL:

"OBD2 Break-Out Box / Multiplexer"