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Home >> Subaru >> 2012 >> Impreza WRX, 4D Sedan >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (W/O STI) (WRX-STI) >> Knock Sensor >> Installation

Knock Sensor: Installation

  1. Install the knock sensor to the cylinder block.
    NOTE: The portion of the knock sensor cord that is pulled out must be positioned at a 60° angle relative to the engine rear.

    Tightening torque: 24 N.m (2.4 kgf-m, 17.7 ft-lb) 

    Fig 1: Identifying Knock Sensor Cord Angle
    G07681689Courtesy of SUBARU OF AMERICA, INC.
  2. Connect the knock sensor connector.
    Fig 2: Locating Knock Sensor Connector
    G07681690Courtesy of SUBARU OF AMERICA, INC.
  3. Install the intercooler. < Ref. to INSTALLATION , Intercooler. >
  4. Connect the battery ground terminal.
    Fig 3: Connecting Battery Ground Terminal
    G07681691Courtesy of SUBARU OF AMERICA, INC.