2022 Subaru WRX Base, Automatic CVT TransFACTORY OEM SERVICE PROCEDURE

Intake Manifold Assembly: Removal

  1. Release the fuel pressure. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL>PROCEDURE>RELEASING OF FUEL PRESSURE 
  2. Open the fuel filler lid and remove the fuel filler cap.
    NOTE:

    This operation is required to release the inner pressure of the fuel tank. 

  3. Disconnect the ground terminal from battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY
  4. Remove the intercooler. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTERCOOLER>REMOVAL
  5. Remove the intake duct No. 2. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTAKE DUCT>REMOVAL>INTAKE DUCT NO. 2
  6. When the engine coolant remains before removing the intake manifold assembly
    1. Disconnect the connector (A).
    2. Remove the bolts securing the throttle body and throttle body stay, and move the throttle body aside so that it does not interfere with the work.
      G13198166Courtesy of SUBARU OF AMERICA, INC.
  7. When the engine coolant has been drained before removing the intake manifold assembly
    1. Remove the throttle body. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>THROTTLE BODY>REMOVAL 
  8. Disconnect the connector (A) and remove the clip (B).
  9. Disconnect the connector (C) and remove the clip (D).
  10. Remove the PCV pipe from the intake manifold assembly.
    G14600896Courtesy of SUBARU OF AMERICA, INC.
  11. Disconnect the vacuum hose.
    G14600897Courtesy of SUBARU OF AMERICA, INC.
  12. Release the lock by sliding the spring, and disconnect the PCV pipe assembly from the intake duct No. 1.
    G14600898Courtesy of SUBARU OF AMERICA, INC.
  13. Remove the connector (A) and connector (B).
  14. Disconnect the fuel delivery tube (C). Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL DELIVERY AND EVAPORATION LINES>REMOVAL>QUICK CONNECTOR DISCONNECTION (TYPE A) 
  15. Remove the fuel delivery tube clamp (D).
  16. Disconnect the evaporation hose (E).
    G13198170Courtesy of SUBARU OF AMERICA, INC.
  17. Remove the V-belt covers.
    G14600900Courtesy of SUBARU OF AMERICA, INC.
  18. Disconnect the connector (A), connector (B) and terminal (C), and remove the clip (D).
    G14600901Courtesy of SUBARU OF AMERICA, INC.
  19. Remove the clip (A) securing battery cable assembly and release the claw (B).
    G14600902Courtesy of SUBARU OF AMERICA, INC.
  20. Remove the connector (A) and connector (B) in numerical order shown in figure.
  21. Disconnect the connector (C), and remove the engine wiring harness from the clip (D).
    G14600903Courtesy of SUBARU OF AMERICA, INC.
  22. Release the claw securing the engine wiring harness to the bracket, and place it aside so that it does not interfere with work.
    G14600904Courtesy of SUBARU OF AMERICA, INC.
  23. Remove the fuel pipe protector No. 1.
    G14600905Courtesy of SUBARU OF AMERICA, INC.
  24. Remove the fuel pipe protector No. 2.
    G14600906Courtesy of SUBARU OF AMERICA, INC.
  25. Disconnect the connector (A).
  26. Disconnect the fuel delivery pipe (B). Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL DELIVERY AND EVAPORATION LINES>REMOVAL>QUICK CONNECTOR DISCONNECTION (TYPE B) 
  27. Remove the clip (C) and clip (D).
    G14600907Courtesy of SUBARU OF AMERICA, INC.
  28. Disconnect the connector (A).
  29. Remove the clip (B) and clip (C).
    G14600908Courtesy of SUBARU OF AMERICA, INC.
  30. Remove the clip (A) from the harness stay.
  31. Remove the harness stay and remove the clip (B).
    G14600909Courtesy of SUBARU OF AMERICA, INC.
  32. Remove the PCV hose. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DOTC)>PCV HOSE>REMOVAL
  33. Remove the nuts securing the EGR pipe No. 2.
    G13198180Courtesy of SUBARU OF AMERICA, INC.
  34. Remove the stud bolt using TORX® E5.
    G13198181Courtesy of SUBARU OF AMERICA, INC.
  35. Remove the intake manifold assembly.
    G13619549Courtesy of SUBARU OF AMERICA, INC.
  36. Remove the fuel pipe protector stay.
    NOTE:

    Perform this procedure only when required. 

    G13198184Courtesy of SUBARU OF AMERICA, INC.
  37. Remove the cylinder head plate from cylinder head.
    NOTE:

    Perform this procedure only when required. 

    G13619551Courtesy of SUBARU OF AMERICA, INC.
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:

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

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