B9 , Exhaust camshaft Vanos position control - Page 6 - BMW M5 Forum and M6 Forums
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post #51 of 107 Old 21st December 2016, 03:04 PM Thread Starter
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post #52 of 107 Old 22nd December 2016, 06:39 PM Thread Starter
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Could it be the dme? The dme triggers the signal to the vanos solenoids right?
Seems to me that signal is missing to the exhaust solenoids
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post #53 of 107 Old 23rd December 2016, 01:16 AM
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I think your only choice is to probe signals right at the DME at this point. That said your last test might have confirmed that signal is there. I have not had a chance to look at the WDS to see what you actually did, I am assuming that the reason for the strange result is because the wrong solenoids were open, just as they switch jobs when moved to the other side I would assume that the plugs don't operate the same either.
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post #54 of 107 Old 23rd December 2016, 03:23 PM Thread Starter
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I talked to 68FB , he said the exact same thing as you Sailor , to probe the signals from the DME.
He also said that the exhaust outlet solenoids is the one not getting a signal

But i'm not quite sure how i probe the signals , could you explain in more detail?

And Merry Christmas
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post #55 of 107 Old 23rd December 2016, 09:32 PM
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Do you have GT1/DIS? If so I would check you can activate the exh outlet solenoid on your troublesome bank.
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post #56 of 107 Old 24th December 2016, 02:41 AM
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Back probing is not easy and you will likely need a a magnifying glass and extra light. In theory it is as simple as sticking you digital volt meter probe in the harness that plugs into the DME. The problem is lack of room and multiple rows of connectors. For me the hardest part is finding the correct pin, bad eyes. Most people have a problem actually making and keeping contact on the pin. One thing you need is an alligator clip that slides on to the probe. If you are testing grnds you can clip it to positive if testing positive you clip it to a grnd. That frees up at least one hand but cuts frustration by 3/4s.

Not everyone would do it this way because it has issues. I made up another tool with the other alligator clip as they come in packs of two for your meter. I soldered a straight pin on it so instead of struggling to hold the probe in a confined area I simply pull the DME look at which pins I need to probe and find which wire that is and put a big piece of masking tape on it with notes. I then put every thing back and start up the car and push the pin right through the wire and it holds by itself so I can do other things including hold the meter so my old eyes can read it easier.

Maybe you are asking which pins to probe? they can be found in the WDS but if you are having issues I can look those up and post the diagrams and pin outs.

Last edited by Sailor24; 24th December 2016 at 02:51 AM.
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post #57 of 107 Old 24th December 2016, 06:44 PM
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It might be easier to do the back probing at the connector in the front. Much fewer wires to sort out. Here's the WD.

B9 , Exhaust camshaft Vanos position control-vanoswiring.png
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post #58 of 107 Old 28th December 2016, 01:53 AM Thread Starter
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This is kinda getting out of my electrical capability haha

How hard is it to swap the Dme? does it need to be reprogrammed or is it just a plug and play?

A friend of mine has a spare Dme that i can try out
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post #59 of 107 Old 28th December 2016, 02:30 AM
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Pretty sure the DME swap is more work. Think you would have a lot of programming to get everything talking. Likely more than just the DME.
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post #60 of 107 Old 29th December 2016, 06:00 AM
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