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Home >> Hyundai >> 2004 >> XG350 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System >> MFI Control System >> Knock Sensor (KS) >> Sensor Inspection
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Sensor Inspection

  1. Disconnect the knock sensor connector.
  2. Measure the resistance between terminals 2 and 3.

    Standard value:  about 5 MΩ (at 20°C (68°F))

  3. If the resistance is zero, replace the knock sensor.

    Knock sensor: 

    16~25 Nm (160~250 kg.cm, 11.8~18.4 lb.ft)

  4. Measure the capacitance between the terminal 2 and 3.

    Standard value:  800~1600 pF

    Fig 1: Checking Knock Sensor Using Multi-Meter
    G00721395Courtesy of HYUNDAI MOTOR CO.