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DTC P0325 - KNOCK SENSOR (KS) CIRCUIT MALFUNCTION Honda Prelude V

Testing & Diagnostics ~230 words
  1. Perform PCM reset procedure. See «TESTS W/CODES - INTRODUCTION»(ref-16345) article. Start engine and run at 3000 RPM with no loads and transmission in Park or Neutral until radiator fan comes on. Allow engine to idle. Increase and hold engine speed at 3000-4000 RPM for at least 60 seconds. If DTC P0325 is indicated, go to next step. If DTC P0325 is not indicated, problem is intermittent. System is okay at this time (test drive may be necessary). Check for poor connections or loose wires between KS and PCM connectors. See «WIRING DIAGRAMS»(ref-16355) article. Repair as necessary.
  2. Turn ignition off. Disconnect KS connector. Using backprobe set, check for continuity between ground and PCM 16-pin connector "D" terminal D6 (Red/Blue wire). (Схема №4) If continuity does not exist, go to next step. If continuity exists, repair short in Red/Blue wire between PCM connector terminal D6 and KS. See «WIRING DIAGRAMS»(ref-16355) article.
  3. Check for continuity in Red/Blue wire between PCM 16-pin connector "D" terminal D6 and KS connector terminal. If continuity does not exist, repair open in Red/Blue wire between PCM and KS. See «WIRING DIAGRAMS»(ref-16355) article. If continuity exists, substitute a known-good KS and recheck. If DTC P0325 is not indicated, replace original KS. If DTC P0325 is indicated, substitute a known-good PCM and recheck. If symptom or indication goes away, replace original PCM.

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