BMW M52b28 Cam Sensor Information

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preludelinux
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BMW M52b28 Cam Sensor Information

Post by preludelinux »

This sensor is not supported by any after market ECU that i know of. Attached is a schematic displaying information oh how the sensor is connected to the BMW ECU. I have heard it called a proximity detector in repair manuals

It has 3-wires connected and a shield
  • pin 64 GROUND
  • pin 43 ecu cam no other information
  • pin 65 ecu cam no other information
Once i get the car idling i will try messing with it!
Attachments
cam electrical info
cam electrical info
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Dan
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Re: BMW M52b28 Cam Sensor Information

Post by Dan »

I would assume it is similar to a prox type sensor. 64 is GND, 65 is a supply voltage and 43 is where you would get voltage variations based on whether a target is passing the sensor or not. The voltage would be elevated above 0V when there is no target movement past the sensor which is handy for determining broken wires, elevating the signal above noise, etc.
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Fred
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Re: BMW M52b28 Cam Sensor Information

Post by Fred »

Agreed. The real question is what the signal looks like :-)
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Dan
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Re: BMW M52b28 Cam Sensor Information

Post by Dan »

yep! I would love to see a scope of it!

I would even be keen on determining hardware to utilise it! :-)
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Fred
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Re: BMW M52b28 Cam Sensor Information

Post by Fred »

Get more sleep, or give me the name of your dealer. You've already got the hardware to utilise it, it's nothing special. Software wise, we'll see, but I doubt it's that tricky.
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preludelinux
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Re: BMW M52b28 Cam Sensor Information

Post by preludelinux »

Well thats good news. I have a scope and once i progress further i can take a look. Would be awesome to support somethings no one else wants to support. I'm sure i can do something to datalog the signal. The only problem with this input is its on the vanos cam.
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DeuceEFI
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Re: BMW M52b28 Cam Sensor Information

Post by DeuceEFI »

Here is a link to a picture of the vanos cam sensor cap that I found tonight:

http://www.101projects.com/BMW/Projects ... C09707.JPG
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