Back to the 1997 E320 camshaft position sensor issue!

I went to check for the 1 kilo-Ohm impedance, and 1 V AC in idle of the camshaft position sensor. I found that the sensor had three terminals, not two as I expected
The resistance was very high across each terminal pair - like 100 KOhm or more (open circuit)

and when the car was started, I could detect no AC voltage at all between any pair of terminals.

Arthur?? I don't understand how the sensor works, and I'd like to see if it functions.

I tested the CamPS on our family car (2 terminal) and it measured 2 kOhm just like Arthur said.

Is anybody familiar with tests for the three terminal sensors - or does this one sound like it's dead?

Also, could the magnet have come off the camshaft gear sprocket?

TIA,

Paul

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1983 500 SL (Gone )
1972 350 SL 4.5