Can you test knock sensor?

[Pace 1989]

I'm tuning my car, and the O2's are getting down to the 760's on pump gas (way too lean). I get no knock, no ESC, and I'm suspicious. Is there a way to test the knock sensor without blowing the car up? I'm tuning with Turbolink and about 16lbs boost, 44psi static fuel pressure with 009 injectors. I also noticed one time that one ESC count came up, and just stayed there, (even at idle) isn't it supposed to go away in a couple frames? Thanks in advance for the help.

Ken TTA#1426

 

[BoostKillsStres]

Try key on, engine off, activate TL and take a socket extension and go tap on the block right near the sensor.

I imagine knock counts stay and reset once they reach 255. At least in directscan they stay.