Well, all I can say that this is a major pain in the A$$.
My ECU gave me a knock sensor code, so I decided to check it.

I checked the harness, and it read between 500 - 600K Ohms, as specified. (I think I did it right)

Now, I want to check if it is the sensor, how do I do that?
Is there a way to check the sensor itself? I followed the instructions posted on the site, but they are not cleat about checking the sensor itself.

I tried using a digital OHM meter on the sensor, so I placed both connectors of the monitor to the 2 pins (technically it should read 0, but in my case it was 1.22 - I think this is the way, but I am not sure, that is why I am asking).

So, to wrap it up, How do I check if the problem is the sensor itself?

PS
There is only 1 wire going into the sensor, is that how it is suppose to be?


Thank you very much for any help!

 

With the car running and idle speed. Check the voltage between the sensor wire and ECU ground. It should be between 2.0V - 3.0V. If it's not, it's busted.

 

How do I do that?
I am sure I know the basic of how to do that, but can you just tell me. I don't want to spend another day under the hood of my car

Thank you again

 

From your first post. I assume you know how to use a multi-meter. That's how you measured the ohm reading so you should know how to measure volts? Anyway, switch the meter to measure "Volts". Stick the red probe to the sensor wire and ground the black probe to something. If the reading doesn't fall into range, change the knock sensor.

 

That's what I am confused about. I know how to use the reader, but you said into the sensor wire. So I have to pull the wire out of the sensor (exposing the 2 pins) and stick the red probe into the harness?

This is the only part I am confused about.