2020 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

Engine Wiring Harness: Installation

  1. Install the harness stay.

    Tightening torque:Β 

    7.5 N.m (0.8 kgf-m, 5.5 ft-lb)

  2. Set the engine wiring harness to the engine, and connect the connector.
    NOTE:
    • If the clip is damaged, replace it with a new part.
    • Before replacing the clip, put an alignment mark (a) on both engine wiring harness and clip to remove the clip, and then align to the alignment mark (a) to attach a new clip to the engine wiring harness.
    G10266195Courtesy of SUBARU OF AMERICA, INC.
    • Structural diagram 1
      G13641141Courtesy of SUBARU OF AMERICA, INC.
      G13641142Courtesy of SUBARU OF AMERICA, INC.
    • Structural diagram 2
      G13641143Courtesy of SUBARU OF AMERICA, INC.
  3. Install the engine wiring harness.

    Tightening torque:Β 

    19 N.m (1.9 kgf-m, 14.0 ft-lb)

    G10266194Courtesy of SUBARU OF AMERICA, INC.
  4. Install the engine control module (ECM). Refer to FUEL INJECTION (FUEL SYSTEMS) (W/O STI)>ENGINE CONTROL MODULE (ECM)>INSTALLATIONΒ .
  5. Install the fuel insulator. Refer to FUEL INJECTION (FUEL SYSTEMS) (W/O STI)>FUEL INSULATOR>INSTALLATIONΒ .
  6. Install the intake manifold. Refer to FUEL INJECTION (FUEL SYSTEMS) (W/O STI)>INTAKE MANIFOLD>INSTALLATIONΒ .
  7. Connect the ground terminal to battery sensor. Refer to NOTE>NOTE>BATTERY .
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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