Hi,
Just did the same last weekend as I had a serious discontinuity at Idle (unable to get anywhere between 1000rpm and 2400 rpm. Checked it with my small scope and yes, it jumped around. When I opened up the AFM, the track was worn rigth to the PCB board in that area.
Retracked, and checks out fine now on my scope. Unfortunately, due to the CORONA lockdown, unable to testdrive at the moment.
You should measure between pin 6 (GND) and pin 7 (Uout), but you should not measure resistance. Put a battery or a regulated power supply between pin 6 and pin 9 (Uin). I used a regulated 5V (4.96-4.99 here) and you push the flap through its paces. You should see a smooth increment (on an analog voltmeter or a scope).
You can find my readings below. It is the % of Uout/Uin that matters.
