Discuss Understaning 'Active at ground' (D+) in the Auto Electrician Forum area at ElectriciansForums.net

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In another thread I asked for advice on identifying +KEY in a Fiat Tyco connector socket.
I notice that the circuit diagram for the connector also shows a pin for "Active at ground D+"
Does that mean at that pin there is 12v present when the engine is running 0v when not running.
OR does does it mean 0v when engine running and 12v when the engine is off.
The circuit diagram I have for the vehicle is at best useless as the pinouts and wire colour scheme do not correspond.
Again thanks in anticipation...
If I knew the answer I wouldn't ask.
Regards
Nick
 
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