NefMoto

I'm trying to get this correct in my head.... is the VSS done by the cluster and transported via Canbus for the ME7.5.5 Ecus?

I'm in the middle of a swap, And would like to take advantage of Launch/no lift/etc but a Speed input is required.

All of the documentation that i have all show it being plugged into the Automatic Transmission Sub-ECU, And in all other cases into the Gauge cluster ( directly? ).

 This depends on the car and if the Vss is from transmission => cluster=>ECU or if the Vss is from wheel speed sensors => abs => cluster=>ECU.

so for those of us that are doin a swap and refusing to use the cluster, were screwed? =D

Kinda. unless you start making a CANBUS VSS converter!

I'm lost... what ECU are you using for the swap?  ME7?

But you're not willing to use the stock cluster?

I'm 90% sure that the ME7 ECU does not have any connections for vehicle speed or wheel speed sensors.

If you want those signals, then the simplest thing to do would be to use something like an Arduino board with a CAN bus shield. Then you would need to figure out which messages contain the speed data, and then output that on a digital or analog pin on the Arduino board.

if your 90% sure, then I'm 99.999% sure, out of the vast diagrams and etc that I have it shows the signal going to the automatic ecu or the cluster for any manual setups...

I'll check into that kinda stuff and see how it turns out, but it's sounding like a project for further down the line. =D

motors been waiting 3 years to get between the rails.


me 7.5.5, late 1.8t awp.

and yep, you got it correct...

I would say 100% sure, but the users on this forum always seem to prove me wrong.  ;D

Tony and how about cruise control? How the ecu can correct the desired speed if it doesn't have awreness of the vehicle speed? I think that it can read it somehow. Mayby by carculating rpm vs gear in gearbox.

The ECU determines what gear you are in based on vehicle speed and RPM.

The ECU is told the vehicle speed over the CAN bus. I can double check this later in the assembly code if anyone wants to know for sure.

Thats a good sign, we've got some smarts around here. :)

I don't think ECU really cares what gear you are in. It tries to maintain given speed with what it has...

There are maps in the ME7 ECU for gear specific boost limits, etc, and that is what it uses the current gear for.

Don't waste time to check it.  :)  You are right 1000%
ECU recieve VSS info through СAN-bus from cluster.
Just catch CAN-message with ID=320h
Also ECU return velocity info back to СAN as a part CCS data packet.

I like all of your posts gremlin. Please continue making them.  ;D

Is it possible to make ME7.5 ECU read speed via CAN?

I'm trying to do this...

You need some motivation or what?

Some time and knowledge rsrs

Hi dal, how are you getting the message? i'm trying to do the same, the abs system sends the velo to the cluster but the ecu doesnt read the message

Got it working.
I replaced ori ECU with 2006 A4 1.8T  ECU. 2 DTC removed and tune.

I got it working on MK4 GTI's, because they have an can gateway. Now the cluster sources VSS from CAN (that is fed by the ABS module).
On 8L A3's, that dont have an CAN gateway, you have to link an wire from ABS to cluster.

CWGGVFZG = 1

Awesome, i have an Ibiza 6L with can gateway my cluster is fully working but i cant read vss on the me7.5 ecu :/, i swaped an AWP from jetta 2002, the ecu is 032HS

Thanks fukenbroken, i dont have this codeword on my xdf, do you know the address for an 032HS file? i attached my XDF file

i found this var but im not sure if this is correct

And .bin file?

hi, this is my .bin

0x10A6D is CWGGVFZG
If am right

thanks, this works pefrect!

What will this result in?

I am running other gearbox and using arduino to read abs can and generate vss for dash.

Die Konfiguration erfolgt ¨uber das Codewort CWGGVFZG. Ist Bit 0 in CWGGVFZG gesetzt, wird die Geschwindigkeit aus der CAN-Botschaft
Kombi 1 (vfzgkb_w) verwendet. Das gleiche gilt, wenn Bit 2 in CWGGVFZG gesetzt ist und B_cankbi = 1 den Empfang der CAN-Botschaft
vom Kombi anzeigt. Wird vfzgkb_w nicht verwendet und ist Bit 1 in CWGGVFZG gesetzt, wird statt dessen die Geschwindigkeit aus CANBotschaft
Bremse 1 (vamsr_w) verwendet. Andernfalls wird das Hardwaresignal ausgewertet.


My poor german translation will be:
When CWGGVFZG is 0  ECU use CAN signal form instrument cluster
Same is when CWGGVFZG is bit 2 and B_cankbi is 1

When CWGGVFZG is set 1, it uses CAN signal from ABS

In any other chase, ECU use signal from hardware( I think that means digital signal from cluster +-12V that is generated before 2002 year)

Edit:
Old ECU have CVGGVFZG have 0, so they use digital signal from cluster
My BEX ecu have 1 so I asume is using signal from ABS

Some dash eeprom can also be tweaked for taking vss from abs canbus
https://drive.google.com/file/d/0B_yK-JKOX_nSWmZvMlBRTlZhZzQ/view?usp=sharing

Yes but not with non vdo clusters. S3 8L does not use abs speed signal.

there are alot of s3 8l dsg cars on youtube with working clusters. some drill the gearbox to add the 02m sensor.

my approach was to supply the dash with speed. the codeword is to provide speed for the ecu.
thx blackt

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Has anyone been successful at getting VSS to the ecu yet? Im working with a 1.8t swapped corrado that I cannot get a VSS reading. I have the VSS output from the corrado cluster going direct to the vss pin on the ecu (pin 54 on the 121pin connector) and the only thing I am getting is an implausible signal. The ecu is an AWP ecu. I am waiting to get the ecu box number from a buddy of mine.

Thanks