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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
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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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