Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001GMR7
Model Year Start: 2020 Model: Corolla Prod Date Range: [01/2019 - 11/2022]
Title: 2ZR-FAE (INTAKE / EXHAUST): EXHAUST PIPE: INSTALLATION; 2020 - 2023 MY Corolla [01/2019 - 11/2022]

INSTALLATION

PROCEDURE

1. INSTALL FRONT EXHAUST PIPE ASSEMBLY (TWC: Front and Rear Catalyst)

(a) Using a vernier caliper, measure the free length of the compression springs.

Standard Length

43.0 mm (1.69 in.)

Minimum Free Length

41.5 mm (1.63 in.)

If the free length is less than the minimum, replace the compression spring.

(b) Temporarily install a new exhaust pipe gasket to the exhaust manifold.

(c) Using a plastic hammer and wooden block, tap in the exhaust pipe gasket until its surface is flush with the exhaust manifold.

NOTICE:

  • Be careful with the installation direction of the exhaust pipe gasket.
  • Do not reuse the exhaust pipe gasket.
  • Do not damage the exhaust pipe gasket.
  • Do not push in the exhaust pipe gasket by using the exhaust pipes when connecting them.

*1

Exhaust Manifold

*2

Exhaust Pipe Gasket

*a

Wooden Block

(d) Connect the front exhaust pipe assembly (TWC: Front and Rear Catalyst) to the 2 exhaust pipe supports.

(e) Install the front exhaust pipe assembly (TWC: Front and Rear Catalyst) to the exhaust manifold with the 2 compression springs and 2 bolts.

Torque:

43 N·m {438 kgf·cm, 32 ft·lbf}

HINT:

After installation, check that the space between the flanges of the exhaust manifold and front exhaust pipe assembly (TWC: Front and Rear Catalyst) is consistent front-to-rear and left-to-right.

*1

Exhaust Manifold

*2

Front Exhaust Pipe Assembly (TWC: Front and Rear Catalyst)

*3

Exhaust Pipe Gasket

*a

Space between Flanges: 8.5 mm (0.335 in.)

2. INSTALL TAIL EXHAUST PIPE ASSEMBLY

(a) Using a vernier caliper, measure the free length of the compression springs.

Standard Length

40 mm (1.57 in.)

Minimum Free Length

38.5 mm (1.52 in.)

If the free length is less than the minimum, replace the compression spring.

(b) Temporarily install a new exhaust pipe gasket to the front exhaust pipe assembly (TWC: Front and Rear Catalyst).

(c) Using a plastic hammer and wooden block, tap in the exhaust pipe gasket until its surface is flush with the front exhaust pipe assembly (TWC: Front and Rear Catalyst).

NOTICE:

  • Be careful with the installation direction of the exhaust pipe gasket.
  • Do not reuse the exhaust pipe gasket.
  • Do not damage the exhaust pipe gasket.
  • Do not push in the exhaust pipe gasket by using the exhaust pipes when connecting them.

*1

Front Exhaust Pipe Assembly (TWC: Front and Rear Catalyst)

*2

Exhaust Pipe Gasket

*a

Wooden Block

(d) Connect the tail exhaust pipe assembly to the 4 exhaust pipe supports.

(e) Install the tail exhaust pipe assembly to the front exhaust pipe assembly (TWC: Front and Rear Catalyst) with the 2 bolts and 2 compression springs.

Torque:

43 N·m {438 kgf·cm, 32 ft·lbf}

HINT:

After installation, check that the space between the flanges of the tail exhaust pipe assembly and front exhaust pipe assembly (TWC: Front and Rear Catalyst) is consistent front-to-rear and left-to-right.

*1

Front Exhaust Pipe Assembly (TWC: Front and Rear Catalyst)

*2

Tail Exhaust Pipe Assembly

*3

Exhaust Pipe Gasket

*a

Space between Flanges: 6.5 mm (0.256 in.)

3. INSTALL HEATED OXYGEN SENSOR

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): HEATED OXYGEN SENSOR: INSTALLATION+

4. INSTALL FRONT FLOOR CENTER BRACE

(a) Install the 2 front floor center braces to the vehicle body with the 8 bolts.

Torque:

29 N·m {296 kgf·cm, 21 ft·lbf}

5. INSTALL FRONT FLOOR COVER LH (w/ Cover)

(a) Engage the 6 clamps to install the front floor cover LH to the vehicle body with the 2 bolts and 3 clips.

Torque:

7.5 N·m {76 kgf·cm, 66 in·lbf}

6. INSTALL FRONT FLOOR COVER RH (w/ Cover)

HINT:

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

7. INSPECT FOR EXHAUST GAS LEAK

If gas is leaking, tighten the areas necessary to stop the leak. Replace damaged parts as necessary.

(a) Perform "Inspection After Repair" after repairing an exhaust gas leak.

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION