Hi, I'm just about to read up on it.
Mmickey, you're absolutely right.
Everything I've just written has been put together by me and doesn't necessarily have to be correct.
The DME tells the alternator what the current load status is via the PWM signal.
The charge controller uses this to regulate the output voltage. If this PWM signal is not received, the alternator operates in a kind of emergency program.
This means that the battery only reaches an output voltage of approx. 13.7V, the base voltage, so to speak.
So this PWM signal is missing in my case.
Where is the DME actually located on the 997.2 Carrera? It is probably easier to measure the signal there instead of at the Lima.
LG Ralph
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