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DTC P0325: Knock Sensor Circuit Malfunction Honda Element I

Testing & Diagnostics 3 illustrations ~503 words

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 128

Scheme 128: DTC P0325: Knock Sensor Circuit Malfunction
Scheme 128: DTC P0325: Knock Sensor Circuit Malfunction

Scheme 129

Scheme 129
Scheme 129

Scheme 130

Scheme 130
Scheme 130
  1. Turn the ignition switch ON (II).
  2. Clear the DTC with the HDS.
  3. Start the engine. Hold the engine speed at 3,000 RPM without load (in Park or neutral) until the radiator fan comes on, then let it idle.
  4. Hold the engine speed at 3,000-4,000 RPM for at least 10 seconds.
  5. Check for Temporary DTCs or DTCs with the HDS. Is DTC P0325 indicated? YES- Go to step 6 . NO- Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the knock sensor and the ECM/PCM.
  6. Turn the ignition switch OFF.
  7. Jump the SCS line with the HDS.
  8. Disconnect the knock sensor 1P connector.
  9. Disconnect ECM/PCM connector A (31P).
  10. Check for continuity between ECM/PCM connector terminal A1 and body ground. Is there continuity? YES- Repair short in the wire between the ECM/PCM (A1) and the knock sensor, then go to step 14 . NO- Go to step 11 .
  11. Connect the knock sensor 1P connector terminal to body ground with a jumper wire.
  12. Check for continuity between ECM/PCM connector terminal A1 and body ground. Is there continuity? YES- Go to step 13 . NO- Repair open in the wire between the ECM/PCM (A1) and the knock sensor, then go to step 14 .
  13. Replace the knock sensor (see «KNOCK SENSOR REPLACEMENT»(ref-220570-S23197195322006022000000) ).
  14. Reconnect all connectors.
  15. Turn the ignition switch ON (II).
  16. Reset the ECM/PCM with the HDS.
  17. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(ref-220572-S08440202922006022000000) ).
  18. Hold the engine speed at 3,000-4,000 RPM for at least 10 seconds.
  19. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES- If DTC P0325 is indicated, go to step 21 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO- Go to step 20 .
  20. Monitor the OBD STATUS for DTC P0325 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES- Troubleshooting is complete. NO- If the screen indicates FAILED, go to step 1 and recheck. If the screen indicates NOT COMPLETED, go to step 17 and recheck.
  21. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM (see «ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING»(ref-220569-S23624043112006022000000) ).
  22. Hold the engine speed at 3,000-4,000 RPM for at least 10 seconds.
  23. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES- If DTC P0325 is indicated, check for poor connections or loose terminals at the knock sensor and the ECM/PCM, then go to step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO- If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see «MAP SENSOR REPLACEMENT»(ref-220570-S17955277902006022000000) ).

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