Code p0328 toyota corolla 2008 and no found nothing

hello, friends, I have u problem with my corolla 2008, me is setting the code p0328 sensor detonation is intermittent one day lights another does not, some vece I erase and lasts a few days but returns again and when it leaves feel good heavy truck to start Here what I done:

Detonation sensor 1- (changed)
2 shot a direct line from the ecu to the sensor to see if there was some check on open circuit anything like
3 all the connections and the whole order was verified

and I still have the problem



beginning when everything had to change the evaporator of the air but they all connect in order and was revised several the problem continues and nothing any suggestions thanks

It's possible that it's your ECM, but it's most likely a bad connection on a terminal. Clean all the connections to the sensor from the ECM. Spray them with electronic cleaner. If you can get to the contacts, make sure they are not damaged so that they can make a reliable connection.

Solution: clean the pin in the ecu and change the knock sensor the terminal is surfate thanx you