No Response from Module

[fabltd]

Hi

I have been trying to get a module working 6C Back-up Cam.

VCDS just reports No Response from Controller.

I have added a CAN Sniffer to the infotainment bus and I can see when VCDS trys to connect it sends:

ID=512(DEC), Data=49C00010000301

The module responds:

ID=585(DEC), Data=00D7F876FC0401

I can varify the module is reponding because if I unplug it ID 585 does not appear.

I have had the theroy that becuase this is on the bench Terminal 15 is missing. The Can GW reports T15 voltage I am unsure if its reporting T15 on the CAN Bus.

This modue is from a PQ35 car ( Audi TT 8J)

I have conflicting information though as to how to varify if this is the case.

I would appricate if any one has sniffed the infotainment bus.

Thank you

 

[Uwe]

Somehow, I don't think this is Product Support.

For one thing, your question is utterly devoid of context.

This modue is from a PQ35 car ( Audi TT 8J)

And what kind of car is it in now? Or is there no car at all and you have some kind of test bench?

-Uwe-

 

[fabltd]

My Applogies

This is on our test bench. We have the module and a Can Gatway connected to VCDS.

I am simply unable to connect to the module from VCDS and lack any further reason as to why it is not responding. When I can see a response from the module when sniffing the CAN Bus.

Is there any more Verbose logging in VCDS other than just "Not Responding"

 

[Uwe]

This is on our test bench. We have the module and a Can Gatway connected to VCDS.

What kind of CAN Gateway?

Are you sure the Infotainment bus is the correct one for this?

Some modules require a "virtual" terminal 15 via CAN messages; these usually come from some other module, not the Gateway. Exactly which module varies depending on the car.

-Uwe-

 

[fabltd]

Hi

Yes can Gateway also from TT 8J - " Some modules require a "virtual" terminal 15 via CAN messages; these usually come from some other module, not the Gateway" I think this maybe my issue. I have ordered a Steering colum module with key to see if I can find the missing virtual Terminal 15.

Is there any way to check for virtual T15 ?

 

[Uwe]

Is there any way to check for virtual T15 ?

I don't know. Traffic on the internal CAN buses is not something we normally concern ourselves with.

-Uwe-

 

[fabltd]

Hi

So I have verified T15 and I can see the can message for this 0x2C3.

I am still not getting a response from the module.

The Gateway is coded. The module appeats to respond as above but VCDS still refuses to communicate.

 

[Sebastian]

VCDS doesn't refuse things. The module in your specific setup might due to the circumstances you created. As I mentioned in your other thread (which you neglected to mention here), your setup (vehicle side) is unsupported and we will not assist with this any further. This is not a VCDS problem/topic related to our product and/or vehicle support diagnostic wide. You are retrofitting something never meant to be in your specific car/setup.

 

[fabltd]

Thank you for your not so helpfull response.

I am simply trying to understand why a CAN bus message that returns to VCDS does not appear to result in a connection.

I shall give up posting here as there appears to be a very negative approch.