Removal and Installation - Catalytic Converter

Special Service Tools / General Equipment

Wood block

Removal

1. 1
   Position the vehicle in NEUTRAL on the lift.
   Refer to: Jacking and Lifting - Overview (100-02 Jacking and Lifting, Description and Operation).
2. 2
   Remove the HO2S.
   Refer to: Heated Oxygen Sensor (HO2S) (303-14C Electronic Engine Controls, Removal and Installation).
3. 3
   Remove the catalyst monitor sensor.
   Refer to: Catalyst Monitor Sensor (303-14C Electronic Engine Controls, Removal and Installation).
4. 4
   Remove the EGR cooler inlet pipe.
   Refer to: Exhaust Gas Recirculation (EGR) Cooler Inlet Pipe (303-08C Engine Emission Control, Removal and Installation).
5. 5
   Remove the bolts and heat shield.
   Torque: 97 lb-in (11 N·m)

   

6. 6
   Remove and discard the exhaust manifold nuts.

   

7. 7
   Remove the muffler and exhaust pipe.
   Refer to: Muffler and Exhaust Pipe - Plug-In Hybrid Electric Vehicle (PHEV) (309-00C Exhaust System, Removal and Installation).
   Refer to: Muffler and Exhaust Pipe - Full Hybrid Electric Vehicle (FHEV) (309-00C Exhaust System, Removal and Installation).
8. 8
   Remove the front lower engine shield.
   Refer to: Front Lower Engine Shield (501-02 Front End Body Panels, Removal and Installation).
9. 9
   Remove the catalytic converter support bracket bolts.
   Torque: 18 lb-ft (25 N·m)

   

10. 10
    Using a holding device, hold the steering wheel in the straight-ahead position.

    

11. 11
    • Remove the bolt and discard it.

    • Move the steering column shaft aside.
      Torque: 46 lb-ft (63 N·m)

    

12. 12
    If equipped.
    Remove the bolts and shield.

    

13. 13
    1. Remove the screws.

    2. Remove the push pins and underbody deflector shield.

    

14. 14
    Remove the front bumper cover.
    Refer to: Front Bumper Cover (501-19 Bumpers, Removal and Installation).
15. 15
    Remove and discard the roll restrictor bracket bolt.

    

16. 16
    Remove the subframe support bracket bolts.

    

17. 17
    1. Remove and discard the rear subframe bolts.

    2. Remove the subframe bolts and brackets.

    

18. 18
    Mark the subframe position relative to the body on both sides.

    

19. 19
    Remove the front subframe bolts on both sides.

    

20. 20
    Support the subframe with a floor jack.
    Use the general equipment: Wood block

    

21. 21
    Loosen the subframe mounting bolts on both sides.

    

22. 22

    NOTICE: Use care when lowering the front subframe to make sure the front subframe mounting structure is not damaged.

    Using a screw jack, lower the subframe.

    

23. 23
    Remove the lower bracket nut and the catalytic converter.

    

24. 24
    Remove and discard the gasket.

    

25. 25
    Remove the insulator bracket assembly.

    

Installation

1. 1
   Clean all exhaust outlet pipes before reassembly.
2. 2
   Install the insulator bracket assembly.

   

3. 3
   Install a new gasket.

   

4. 4
   Position the catalytic converter in the vehicle and install the lower bracket nut.

   

5. 5
   Raise the front subframe.

   

6. 6
   Hand-tighten the front subframe bolts on both sides.

   

7. 7
   1. Install the brackets and the new rear subframe bolts, hand-tightening them.

   2. Hand-tighten the subframe bracket bolts.

   

8. 8
   Align the marks made during removal on both sides.

   

9. 9
   Tighten the subframe bolts on both sides.
   Torque: 85 lb-ft (115 N·m)

   

10. 10
    Tighten the front subframe bolts on both sides.
    Torque: 22 lb-ft (30 N·m)

    

11. 11
    1. Tighten the bolts.
       Torque:
       Stage 1: 159 lb-ft (215 N·m)
       Stage 2: 60 degrees

    2. Tighten the bolts.
       Torque: 46 lb-ft (63 N·m)

    

12. 12
    Install the subframe support bracket bolts.
    Torque: 22 lb-ft (30 N·m)

    

13. 13
    Install a new roll restrictor bolt.
    Torque: 129 lb-ft (175 N·m)

    

14. 14
    Install the exhaust manifold nuts.
    Torque: 41 lb-ft (55 N·m)

    

15. 15
    Tighten the lower bracket nut.
    Torque: 35 lb-ft (48 N·m)

    

16. 16
    To install, reverse the removal procedure.
17. 17
    Check the exhaust system for leaks.