Translate values of VAG COM ?

[vertigone]

1- Anyone has translate to "human language" the block 00 for 3b motor ?
2 - how do you reset adaptation tables ?

[AndyP]

I didn't think you could access that information with a 3B ECU, only the ABY one?

[mcandmar]

If you hold the mouse cursor over the vaules it should give you the info. For example heres an extract from an ABY label file Paul put together... you will need a 3B workshop manual to confirm if the channels are the same.

; ************************************************** *************
; * *
; * Audi S2 5-cyl Turbo 4WD with ABY Engine (Oct 92 - Jul 95) *
; * Component 2.2l R5 MOTR.RHV HS D02 with ECU #895-907-551-A *
; * *
; *::::::::::::::::::::::::::::::::::::::::::::::::: ::::::::::::*
; * *
; * Visit http://www.S2central.com for more info on the Audi S2 *
; * Label file created by Paul Nugent on 31st January 2002, v01 *
; * *
; ************************************************** *************
;
; Group 000 included here for reference purposes...
; Labels for Group 000 are not yet supported in VAG-COM.
;
; 000,00,ABY Engine Group 0 : General Status
; 000,01,Coolant Temperature,Idle 184-215
; 000,02,Engine Load,Idle 20-26
; 000,03,Engine Speed (RPM),Idle 77-83
; 000,04,Operating range of IAC valve,Idle 121-135
; 000,05,IAC curve zero point,Idle 70-125
; 000,06,IAC load adjustment,Idle 123-137
; 000,07,IAC curve control,Idle 41-61
; 000,08,Lambda control,Idle 123-133
; 000,09,Lambda adaptation,Idle 100-141
; 000,10,Ignition Timing,Idle 35-37


Reset adaptation is a button on the main Engine ECU screen, i dont know if that actually does anything on these cars so just pull the ECU fuses to be sure.

[M_GORDON]

Wow! Thanks!
I don´t know too.

Thanks.

PS: have we any manual of vgacom for our cars? Are a lot of parameters that I don´t know if they are correct or not.

[vertigone]

mcandmar thanks for that but in fact I wanted to know what values mean in real :

for exemple : 000,01,Coolant Temperature,Idle 184-215

184 - 215 values = 84° - 105° or i'm wrong ?

any idea how to translate other values ?

[jontawn]

As he said, hold your curser over the displayed value and you should see a balloon appear with the suggested value's.

As I understand it, something like the bentley manual will be what you require for a proper 'translation' of these values. VCDS/Vagcom will tell you what is there and what the suggested parameters are, anything else and you'd require tech documentation from either Audi or from the bentley manual.

What version of VCDS/Vagcom are you using?

jt

[vertigone]

Ok I'll try that thx

VCDS 908.2

[mcandmar]

mcandmar thanks for that but in fact I wanted to know what values mean in real :

for exemple : 000,01,Coolant Temperature,Idle 184-215

184 - 215 values = 84° - 105° or i'm wrong ?

any idea how to translate other values ?

I think the actual sensor range is more like -10 to 100c. For the purpose of block 000 all the service manual info will refer to the reported value, i.e. 184-215.

If you want to see the engine temp in plain degrees C use measuring block 1.

[ranz]

I think the actual sensor range is more like -10 to 100c. For the purpose of block 000 all the service manual info will refer to the reported value, i.e. 184-215.

If you want to see the engine temp in plain degrees C use measuring block 1.

The actual range yes is wider, but vertigone was right: 184 - 215 values = 84° - 105°
Thes values are ment to check with warm engine and air con off and stuff, 3B engine workshop manual has list of these values, what they must be, and if they are not, what to check etc.
But the workshop manual "translates" only three values.
1. 184 - 215 = 84° - 105°
3. 77 - 83 = 770 - 830/rpm
10. 35 - 37 = 8 - 12 degrees BTDC
The other values are not "translated"
Also is the mcandmar given list is correct for 3B also.

And for the other measuring blocks... i thought also that with 3B they do not work I have tested it with many cars and all with them I got error message.

[vertigone]

Ranz sorry for late answer !
Thanks for that !

Anybody knows how to translate these in voltage form ?

08 Lambda Control 123 - 133
09 Lambda Adaptation 100 - 150

Could be very useful to do a quick check of your mixture adaptation

[prj]

Ranz sorry for late answer !
Thanks for that !

Anybody knows how to translate these in voltage form ?

08 Lambda Control 123 - 133
09 Lambda Adaptation 100 - 150

Could be very useful to do a quick check of your mixture adaptation

These are not voltage.
These are multipliers (seems to be like the rest of motronic).

8 = Short term fuel trim.
9 = Long term fuel trim.

To calculate the multiplier, use X/128.
This multiplier is not very useful for you though. As far as I understand the multiplier is applied to the final injector time open. So if normally your injectors would be open for 100ms, and the value is 106, that means you are running too rich and due to lambda fuel trim your injector time open gets shortened to 100ms*(106/128) = 82.8125ms

But this is useless if you don't know the injector time open.
Basically the short term fuel trim will vary a lot. The important part is the long term fuel trim. If it is higher than 128, then you are running rich, if it is lower than 128, you are running lean. Please note that this only applies during cruise (closed loop operation), as that is when the lambda is used.

This is just the tip of the iceberg, but I think I have explained enough to get a basic understanding.

P.S. The numbers could also be vice-versa, but this is how I remember it. It's easy to check with an adjustable FPR.

[vertigone]

Yes this is clear ! thanks a lot !

[M_GORDON]

T
But the workshop manual "translates" only three values.
1. 184 - 215 = 84° - 105°
3. 77 - 83 = 770 - 830/rpm
10. 35 - 37 = 8 - 12 degrees BTDC

Excuse me, who is that? BTDC??

[ranz]

Excuse me, who is that? BTDC??

Ignition degrees Before Top Dead Center.