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Home >> Hyundai >> 2006 >> Accent Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> DTC Troubleshooting Procedures >> DTC P0327 Knock Sensor 1 Circuit Low Input >> Signal Circuit Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Signal Circuit Inspection

  1. Check voltage.
    1. Key "OFF".
    2. Disconnect Knock sensor connector.
    3. Key "ON".
    4. Measure the voltage between terminal 1 of knock sensor harness connector and chassis ground.
    5. Measure the voltage between terminal 2 of knock sensor harness connector and chassis ground.

      Specification: Approx 2.4V

    6. Is the measured voltage within specification?

      YES  : --> Go to "COMPONENT INSPECTION " procedure.

      NO  : --> Go to "Check resistance" procedure.

  2. Check resistance.
    1. Key "OFF".
    2. Disconnect Knock sensor connector and ECM/PCM connector.
    3. Measure the resistance between terminal 1 of knock sensor harness connector and 30/C01-2 (32/C01) of PCM (ECM) harness connector.
    4. Measure the resistance between terminal 2 of knock sensor harness connector and 15/C01-2 (11/C01) of PCM (ECM) harness connector.

      Specification: Below approx. 1Ω

    5. Is the measured resistance within specifications?

      YES  : --> Repair Short to ground in signal circuit and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

      NO  : --> Repair Open in signal circuit and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

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