Posted to the Waveform Library on 10/15/2013

Toyota 1MZ 3.0 liter V6. This waveform shows one of the old knock sensors on top, and a new one on the bottom. Taken at steady throttle with the engine at 4,000 rpm. Toyota ECM looks for the 7.1 KHz signal. With dropouts like the top wave, it will set P0325 or...