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Electronic Ignition Timing Retard

Knock sensor is located under No. 3 intake runner of intake manifold. Knock sensor sends a variable AC voltage signal to PCM depending on engine detonation. PCM uses this signal to determine if ignition timing should be retarded. If a fault occurs in knock sensor circuit or knock sensor fails, DTC P0325 can set in PCM memory. For test procedure with DTC set, see appropriate SELF-DIAGNOSTICS article.