On 1997 Infiniti I30 the knock sensor is located under the intake manifold.
Error code P0325 is the indication f replacing or testing knock sensor and its connection.
The intake plenum and manifold has to be removed to replace the knock sensor.
Its not a easy task.Its time consuming job.
--------------
The car will not start?
Car will not crank?
Car has no spark?
How to troubleshoot car battery?
How to test starter solenoid?
http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html
--------------------
How to test cars starter?
http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html
How to replace starter in car?
http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html
Error code P0325 is the indication f replacing or testing knock sensor and its connection.
The intake plenum and manifold has to be removed to replace the knock sensor.
Its not a easy task.Its time consuming job.
--------------
For more car related problem troubleshooting:---
This are the sections, you can go through and click the link to read its troubleshooting.
---------
The car will not start?
-----------------
Car will not crank?
-----------
Car has no spark?
-------------
How to troubleshoot car battery?
-----------------