There seems to be an embedded microprocessor in the ECU (as they should be!). I guess what it is actually doing is taking a reading from resistance created by the spring and then feeding into its built in computer. I am guessing the airbag ECU will also have other values from the main ECU such as vehicle speed so it knows if it needs to trigger the airbag or not.
It actually looks very very simple.
Is there any chance of a higher res picture or could you tell me exactly what those chips say? It would mean something to me.
Edited by Rattle on 18/12/2009 at 23:28
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