LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2012 >> Legacy Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection Fuel Systems (H4SO) >> Knock Sensor >> Installation
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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
    G07909681Courtesy of SUBARU OF AMERICA, INC.
  2. Connect the knock sensor connector.
    Fig 2: Locating Knock Sensor Connector
    G06648302Courtesy of SUBARU OF AMERICA, INC.
  3. Install the air intake boot assembly. Refer to AIR INTAKE BOOT .
  4. Connect the ground cable to battery.
Fig 3: Connecting Ground Cable To Battery
G07909683Courtesy of SUBARU OF AMERICA, INC.