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Until I owned an E46 M3 I did not realize you could not order a complete, well-written, and comprehensive service manual like you can for most any other car. Luckily with the internet, the terrible and incomplete Bentley manual, copies of BMW's own TIS system, and the ever helpful Chinese would have reverse engineered and copied a number of BMW's interfaces, it is possible to hobble together a workable knowledge base.
Even with all of the above, finding a standardized step by step multimeter based test procedure for something as (should be) simple as the three TPS sensors is next to impossible.
The E92 is even worse in this regard. I would not attempt to DIY anything on my E92.
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