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Durametric and Alarm system: Follow up question

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Follow up question. Is it possible, in the absence of the official Porsche tool, to diagnose which circuit is not showing as closed using a multimeter? Time consuming, I know, but if its not too time consuming its probably less time than a dealer visit just for this. Are there any circuits which have shown themselves as more likely to be problematic


Thanks again

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The Porsche testers will tell you precisely where the fault is down to zone level.

So it is up to the technician to investigate whether it is a switch or sensor issue or a wiring issue.

In my experience -- unless some after market equipment was added the causes are most often the switch or sensor in the faulting zone. Usually a relatively easy fix.

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I agree, the fault is likely in the switch or sensor (I assume that when you say "sensor" you're referring to the motion sensor at the top of the windshield?). When I have a moment I'll start checking the different possibilities. Are these typically separate switches/sensors or are they incorporated into a larger mechanism.


Can you point me to a wiring diagram for the different switches?



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Thanks, I understand your reluctance to publish a wiring diagram for the alarm system. 


Without violating that, can you educate me on how the (for example) the front hood lock works. I assume there is a (pair ?) of wire sending the lock/unlock function (presumably from the central locking system/alarm. Is there a second set of wires telling the alarm module that the trunk is open(ed)?


In other words is it a simple circuit for lock and status? Or a complex circuit like a LAN?



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