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masterj
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« on: January 28, 2015, 06:13:36 AM »
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I've read few topics here that recommend only disabling diagnostics of VVT. But for complete disable I think we also need b_nws = 0, no?
Currently I have fixed ESKONF and CDNWS = 0.
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littco
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« Reply #1 on: January 29, 2015, 02:17:59 AM »
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I've read few topics here that recommend only disabling diagnostics of VVT. But for complete disable I think we also need b_nws = 0, no?
Currently I have fixed ESKONF and CDNWS = 0.
if you resistor out or leave just the vvt solenoid plugged in ( not the whole vvt, just actual solenoid) then you only need to set CDNWS 0..but I also set all the wse maps to 18 as well.. |
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masterj
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« Reply #2 on: January 29, 2015, 09:54:19 AM »
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I'll try to analize fr cause I think that there has to be easier and more "correct" way than setting all *WSE maps to 18 or -4  |
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masterj
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« Reply #3 on: January 29, 2015, 10:24:11 AM »
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After some digging into FR I propose this:
disable b_nws by TMNW = FF
properly set camshaft reference value in WNWREO
Additionally disable diagnostics by ESKONF and CDNWS. Whatcha think?
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ddillenger
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« Reply #4 on: January 29, 2015, 10:54:42 AM »
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After some digging into FR I propose this:
disable b_nws by TMNW = FF
properly set camshaft reference value in WNWREO
Additionally disable diagnostics by ESKONF and CDNWS. Whatcha think?
I think you should just use CDNWS/ESKONF and unplug the solenoid. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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masterj
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« Reply #5 on: January 29, 2015, 12:10:41 PM »
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I think you should just use CDNWS/ESKONF and unplug the solenoid.
And CDNWS will set b_nws = 0? Because if not then I think it will still switch between ignition maps or am I wrong? |
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prj
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« Reply #6 on: January 29, 2015, 11:46:52 PM »
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Switching between ignition maps is done by actual camshaft position.
If the cams are not moving, fnwue is 0 and there is no switching.
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masterj
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« Reply #7 on: January 30, 2015, 01:33:09 AM »
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Switching between ignition maps is done by actual camshaft position.
If the cams are not moving, fnwue is 0 and there is no switching.
oh, ok. So basically ecu will think it is not switching from -4 to 18 advancement. Got it Thanks |
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masterj
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« Reply #8 on: January 31, 2015, 07:02:47 AM »
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One more question:
When VVT is not present camshaft is in advanced (18) or in retarded (-4) position? For example for AGU or AEB should I set up whole changeover map to -4 or 18? (to use only one variation of ignition map KFZW)
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« Last Edit: January 31, 2015, 07:04:27 AM by masterj »
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MadCow
Full Member
Karma: +3/-1
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Posts: 108
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« Reply #9 on: January 31, 2015, 09:53:48 AM »
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I forget which position is the default, but when I tried setting all the values the same the ECU never went through the OBD2 readiness tests and there were some fuel trim issues (forget exactly what). I changed ESKONF and CDNWS and copied the KFZW* maps over to KFZW*2 and it everything seemed fine after that.
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masterj
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« Reply #10 on: January 31, 2015, 11:44:34 AM »
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I forget which position is the default, but when I tried setting all the values the same the ECU never went through the OBD2 readiness tests and there were some fuel trim issues (forget exactly what). I changed ESKONF and CDNWS and copied the KFZW* maps over to KFZW*2 and it everything seemed fine after that.
If you copied from kfzw to kfzw then i think default is advanced... |
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ddillenger
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« Reply #11 on: January 31, 2015, 11:54:09 AM »
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One more question:
When VVT is not present camshaft is in advanced (18) or in retarded (-4) position? For example for AGU or AEB should I set up whole changeover map to -4 or 18? (to use only one variation of ignition map KFZW)
VVT advances the camshaft by 22 degrees. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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masterj
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« Reply #12 on: January 31, 2015, 03:54:17 PM »
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VVT advances the camshaft by 22 degrees.
Yes, between -4 and 18 degrees (shown in various maps). So basically in "default" position it is -4, right? Just need confirmation to close this topic |
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ddillenger
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« Reply #13 on: January 31, 2015, 04:03:00 PM »
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Yes, between -4 and 18 degrees (shown in various maps). So basically in "default" position it is -4, right? Just need confirmation to close this topic 18 represents at rest in the 1.8t files from what I recall. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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DDillenger84(at)gmail(dot)com
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masterj
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« Reply #14 on: January 31, 2015, 04:08:55 PM »
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18 represents at rest in the 1.8t files from what I recall.
So advancement is done backwards... OK, so if "default" (retarded) position is 18 then advanced will be -4. Weird compared to ignition where advancement is done by increasing number and retard by decreasing. |
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