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Home >> Mazda >> 2021 >> CX-9 Touring, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Knock Sensor (KS) Removal/Installation >> Notes
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Knock Sensor (KS) Removal/Installation: Notes

  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
  3. Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
  4. Remove the bolts.
    Fig 1: Knock Sensor, Intake Manifold Stay And Bolts With Torque Specification
    G11436119Courtesy of MAZDA MOTORS CORP.
  5. Remove the intake manifold stay.
  6. Disconnect the KS connector.
  7. Remove the bolt.
    Fig 2: Knock Sensor Bolts With Torque Specification
    G11436120Courtesy of MAZDA MOTORS CORP.
  8. Remove the KS. (See KS INSTALLATION NOTE .)
  9. Install in the reverse order of removal.
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