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Knock Sensor (KS) Removal/Installation: Notes

WARNING: This page is about a different car, the 2021 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
  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: Intake Manifold Stay Bolts With Torque Specification
    G13714493Courtesy 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
    G13714494Courtesy of MAZDA MOTORS CORP.
  8. Remove the KS. (See KS Installation Note .)
  9. Install in the reverse order of removal.
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