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Re: Knock Sensor Issues 02 Camry P0330
Posted to Technical Discussion Forum on 3/30/2019 4 Replies

Back probe the scope leads into the knock sensor inputs at the ECM. Run the engine up to 4,000rpm. Signal output from the sensors should be 7.1kHz. This is what the ECM is looking for, and if the frequency is different (many aftermarket sensors), it'll code. I... Login to read more.

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