Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001I1GC
Model Year Start: 2020 Model: Corolla Hatchback Prod Date Range: [03/2019 - 09/2022]
Title: M20A-FKS (INTAKE / EXHAUST): EXHAUST MANIFOLD (for Double Wishbone Type Suspension): REMOVAL; 2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during exhaust manifold (TWC: Front Catalyst) removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link
  • Replacement of air fuel ratio sensor (sensor 1)
  • Gas leaks from exhaust system is repaired

Inspection after repair
  • Poor idle, etc.
  • Engine start function, etc.

2019 - 2020 MY Corolla Corolla Hatchback [06/2018 - 09/2019]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION 2020 MY Corolla Corolla Hatchback [09/2019 - 04/2020]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION 2021 - 2023 MY Corolla Corolla Hatchback [04/2020 - 11/2022]; M20A-FKS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

CAUTION:

  • To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
  • To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

PROCEDURE

1. REMOVE FRONT FLOOR COVER LH

(a) for Hatchback:

*A

Type A

*B

Type B

Bolt

Clip

(1) Remove the 2 bolts and 3 clips and disengage the 6 clamps to remove the front floor cover LH from the vehicle body.

Bolt

Clip

(b) except Hatchback:

(1) w/ Cover:

Remove the 2 bolts and 3 clips and disengage the 6 clamps to remove the front floor cover LH from the vehicle body.

2. REMOVE FRONT FLOOR COVER RH

HINT:

Perform the same procedure as for the front floor cover LH.

3. REMOVE FRONT FLOOR CENTER BRACE

(a) for Hatchback:

(1) Remove the 12 bolts and 3 front floor center braces from the vehicle body.

(b) except Hatchback:

(1) Remove the 8 bolts and 2 front floor center braces from the vehicle body.

4. REMOVE FRONT EXHAUST PIPE ASSEMBLY (TWC: Rear Catalyst)

CAUTION:

  • To prevent burns, do not touch the engine, exhaust manifold (TWC: Front Catalyst) or other high temperature components while the engine is hot.
  • To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

(a) Disconnect the air fuel ratio sensor connector.

(b) Disengage the wire harness clamp.

(c) Remove the 4 bolts and 4 compression springs and disconnect the front exhaust pipe assembly (TWC: Rear Catalyst) from the exhaust manifold (TWC: Front Catalyst) and tail exhaust pipe assembly.

*A

for Hatchback

*B

except Hatchback

(d) Remove the front exhaust pipe assembly (TWC: Rear Catalyst) from the 2 exhaust pipe supports.

(e) Remove the 2 gaskets from the exhaust manifold (TWC: Front Catalyst) and front exhaust pipe assembly (TWC: Rear Catalyst).

5. REMOVE FRONT NO. 1 FLOOR HEAT INSULATOR

  • for Manual Transaxle:
    • for TMC Made: Click here 2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022]; EG60 (MANUAL TRANSMISSION / TRANSAXLE): TRANSMISSION CONTROL CABLE (for TMC Made): REMOVAL+

      except TMC Made: Click here 2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022]; EG60 (MANUAL TRANSMISSION / TRANSAXLE): TRANSMISSION CONTROL CABLE (except TMC Made): REMOVAL+

  • for CVT:
    • for TMC Made: Click here 2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022]; K120 / K121 (CVT): TRANSMISSION CONTROL CABLE (for TMC Made): REMOVAL+

      for TMMMS Made: Click here 2020 - 2022 MY Corolla Corolla Hatchback [03/2019 - 09/2022]; K120 / K121 (CVT): TRANSMISSION CONTROL CABLE (for TMMMS Made): REMOVAL+

6. REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY

Click here 2020 MY Corolla Corolla Hatchback [03/2019 - 09/2019]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2020 - 2021 MY Corolla Corolla Hatchback [09/2019 - 06/2021]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2022 MY Corolla Corolla Hatchback [06/2021 - 09/2022]; M20A-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

7. REMOVE AIR FUEL RATIO SENSOR

Click here 2019 - 2025 MY Corolla Corolla Hatchback [06/2018 -        ]; M20A-FKS (ENGINE CONTROL): AIR FUEL RATIO SENSOR (for Sensor 1): REMOVAL

8. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR

CAUTION:

To prevent burns, do not touch the engine, exhaust manifold (TWC: Front Catalyst) or other high temperature components while the engine is hot.

(a) Remove the 3 bolts and No. 1 exhaust manifold heat insulator from the exhaust manifold (TWC: Front Catalyst).

9. REMOVE MANIFOLD STAY

CAUTION:

To prevent burns, do not touch the engine, exhaust manifold (TWC: Front Catalyst) or other high temperature components while the engine is hot.

(a) Remove the bolt, nut and manifold stay from the exhaust manifold (TWC: Front Catalyst) and cylinder block sub-assembly.

10. REMOVE EXHAUST MANIFOLD (TWC: Front Catalyst)

CAUTION:

To prevent burns, do not touch the engine, exhaust manifold (TWC: Front Catalyst) or other high temperature components while the engine is hot.

(a) Using a 12 mm deep socket wrench, remove the 7 nuts and exhaust manifold (TWC: Front Catalyst) from the cylinder head sub-assembly.

(b) Remove the exhaust manifold to head gasket from the cylinder head sub-assembly.

11. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR

(a) Remove the 3 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold (TWC: Front Catalyst).