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S50B30 single vanos trouble

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I notice that you only have one aux out assigned to the cam control I would have expected 2 on the BMW.
If you unplug the control solenoid do you get a stable set of figures?

 

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I have connected signal from inlet camshaft sensor(which shows  real cam angle) to trigger 1 and run oscilloscope

It have wrong polarity?

bmw vanos falling edge.jpg

I have changed polarity on sensor 

but i have no luck

i still have not stable values on cam angle test

as we can see we have 8 teeth on camshaft

 

bmw vanos changed polarity.jpg

bmw vanos testing_with changed polarity.llg

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problem sovedI have assigned VVT inlet Lh function to Trigger 2 and di2(which actually shows camshaft position)

When i turned off trgger2 vvt function - everything stabilized and started to work

except vanos) i think it in bad condition

because it can not hold target

instead of 10 degree it instantly open to it's maximum and closing very long

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Well done on identifying the problem with the VVT input. Of your images above the upper image has the correct polarity on trigger one. 

If you want to upload an updated base-map and log file I'm happy to have a look and see if I can see any problems in the VVT control setup.

Scott

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Well done on identifying the problem with the VVT input. Of your images above the upper image has the correct polarity on trigger one. 

If you want to upload an updated base-map and log file I'm happy to have a look and see if I can see any problems in the VVT control setup.

Scott

please take a look to attachments

vanos testing.pclr

vanos test.llg

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I think the control of the cam is not good because the ECU is reporting 'Error: extra pulses'. We need to determine why this is occurring. Have you re-done the cam angle test since you turned the Trig2:VVT to OFF?

Scott

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of course i have done it

you can see that error is shows up during opening or closing of cam

when camshaft sitting stable in closed\open case - there is no errors at all

i think that problem in vanos system it have low\no pressure in retard camera

so thats why we see errors

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Thanks for the log, I see you had the cam angle test enabled. This could also stop any errors occurring. If you run the system with the CAM Angle Test off and the solenoid disconnected doe the error counter stay at zero?

Scott

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yes

Erors stay at zero

But anyway with enabled cam angle test if something goes wrong i will receive different cam angles when i play with throttle

So today we age going to rebuild vanos system and will take a look

this particular car havearoun 150 000 km mileage and problems with vanos have been guaranteed)

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