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Yup, INPA is very useful for diagnosing IHKA issues.How could i check these sensors? Any way of INPA diagnosing the hole climate control system?
https://goo.gl/images/hHmC1J
https://goo.gl/images/B9N1QO
Read this document as well.
http://bmwcarx.com/web/DocumentosBMW/E46ControlClimatico.pdf