i am troubleshooting a check engine code #52, which is "knock control - malfunction" according to the internet or "no knock sensor signal" according to a chilton manual.
i removed the knock sensor, which is NOT THAT HARD, and i didn't have to remove the engine, or even cut up the floorboard, or even undo any motor mounts! ˇ!MAZELˇ! i plan to document this soon.
with the sensor removed, i checked resistance between the single-wire knock sensor harness and ground, and measured a steady 3.3 kΩ. is this normal?
i will install the new sensor soon and see if the code goes away, but i also wanted to see if anybody knew about the expected resistance.
one other complication, my van was made before 8/1991, so it uses the 89615-12020 sensor, which is different from later previas, including the later 1991 ones.
thanks, and i'll post up the results too when the new sensor is in.