Knock sensor

My car dosnt seem to be reading any knock, iv got continuity from the plug to the ecu connector and it going to the right pin but I also have a PFC and all the pins on that are interchangeable. So firstly does anyone have a diagram for the ep82 PFC? Iv tested my knock sensor and it's reading upto 0.3v ac when tapped which im sure is ok but can anyone confirm this is right?
 
Iv tried that buddy, the thread and surface's are clean. What I really need to know is on the standard 26pin plug the knock sensor is pin 23 and on the PFC harness it goes to the small 16pin connector and through pin 13, please can someone confirm this for me? Or look on there's if they have one fitted
 
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