Calibration of the widebandsonde with 1.1.44

[Denmark]

Hi All.

I were today going to put in 1.1.44 into a vems, and would then calibrate the wideband sonde, but i cant turn on the heater from the terminal program like i use to do with 1.0.73
I have turned of the aimstream,and that did make a diffrence, so ican now see the right page, but the heater can not be turned on,
Is there anything else ican do to calibrate the sonde, as i cant figure out to downgrade to 1.0.73, as i could then have used that to do the calibration.

Also ona sidenote, how much difference would there be on the wideband, if i use one of the preveius settings for the wideband, how big a error could there be?
As im also thinking if the sonde needs to be changed, do you then calibrate it again?


Thanks,
Skassa

[Denmark]

I have now found out how to ga back to 1.0.73, so i will do that, so i can calibrate the wideband, but can it be that its not the same command ( Manmde02)that i need to turn on the heater, as in 1.0.73,
Or could there be somthing else wrong?

Thanks,
Skassa

[PeepPaadam]

I've used WB calibration settings from 1.0.73 and they worked without any problems on 1.1.43.

Easiest way to downgrade from 1.1.4x to say 1.0.73 is to use PSI Tuner.

[rob@vems.co.uk]

When using terminal you need to remember that 1.1.4x uses 19200 not 9600baud.

[Denmark]

Thanks,
I have changed the baud to 19200, and it is talkingtothe ecu, i just cant use the same command to turn on the heater,.

the problem here is that its a new ecu, and a new wideband sonde,and i would like to calibrate it,
But i have before changed a wideband sonde on a car, were the sonde was broken, and i could not tell the difference between the old working and the new one,
and i did not calibrate it again.


/Skassa

[GintsK]

If you talking about OE system then calibration is automatic. ECU measures calibration resistor in LSU connector.
But it is not related to VEMS.

Currently I have problem with unit where something goes wrong: when i type mde02 LCD immediately shows P (Pid I suppose), normally there must be W (warmup). And no heating - no signal to FET. I tried 1.1.27, 1.1.44 and 1.0.7x. Have I hardware problem?
I can adjust pump zero and I have 4.0V on pin 5. But last step fails

[Denmark]

Hmm,

That could be the same problem i got, as it seems that it works, but i also cant turn on the heater.

at first i thourght it was becourse of the aim stream, but that was not the case,
I will tommorow try to downgrade to  1.0.73, and see if i can get the heater turned on.
Mine is board number :1996.

can there maybe be some parts missing?


/Skassa

[GintsK]

Some time ago I had board with shortcut under  wbo2 heater fet pulldown resistor.  But IIRC then P and W was like normal. Only no heating.
Now I have AFR=?? and O2=??, but P is ON from beginning when type mde02.

[Denmark]

I did the following to getting it working,
I started the car, with the wideband in freeair, then it heated up,
and i just keept the car running, and then turned on the terminal program , and calibrated it to 20.9 in freeair.

/Skassa

[rob@vems.co.uk]

Well thats a way of doing it I guess... Not ideal though

[Denmark]

No, i know, but the only way i could turn on the heater

[GintsK]

Some time ago I had board with shortcut under  wbo2 heater fet pulldown resistor.  But IIRC then P and W was like normal. Only no heating.
Now I have AFR=?? and O2=??, but P is ON from beginning when type mde02.

Here is answer on my problem! Look at this dirty corner:

http://lh4.ggpht.com/_GIH14imuQNg/SbvuKm72ulI/AAAAAAAAABo/mRXJuOU0bX0/s1024/DSCF2761.JPG
No presence of 3 resistors. Two of them definitely is part of WBO2 system.

I hate this: even more often than 1 of 10 PCBs from Hungary comes with built-in defects. OK may be someone stole these three in way to me

I soldier all 3. And now all works as usually.

Gints

[rob@vems.co.uk]

That's shocking - but as we know the manufacturers of VEMS do not read this forum .  Can you tell me which serial numbered boards have had problems, and I will let them know that they need to get their arses in gear.