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Knock Sensor Inspection

  1. With ignition mode of keyless push start system in "OFF", disconnect connector (2) from knock sensor.
  2. Connect oscilloscope (1) as shown in figure.
    Fig 1: Identifying Knock Sensor Connector Terminals
    G06528146Courtesy of SUZUKI OF AMERICA CORP.
  3. Check that knock sensor signal (1) shows the following waveform when plastic hammer inflicts a strong impact on the cylinder block.

    If faulty condition is found, replace knock sensor, see KNOCK SENSOR REMOVAL AND INSTALLATION .

    Fig 2: Knock Sensor Signal Waveform Graph
    G06528147Courtesy of SUZUKI OF AMERICA CORP.
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