Installation [12/2019 - 10/2022]: Procedure

INSTALL HEATED OXYGEN SENSOR (for Bank 2)
Refer to INSTALLATION [12/2019 - 10/2022]
INSTALL HEATED OXYGEN SENSOR (for Bank 1)
Refer to INSTALLATION [12/2019 - 10/2022]
INSTALL FRONT EXHAUST PIPE ASSEMBLY
1. Install 2 new gaskets to the front exhaust pipe assembly.
2. Temporarily install the front exhaust pipe assembly with 4 new nuts.
3. Tighten the 4 nuts.
  Torque: 43 N.m (438 kgf/cm, 32 ft.lbf)

INSTALL CENTER EXHAUST PIPE ASSEMBLY (TWC: Rear Catalyst)

Using a vernier caliper, measure the free length of the 2 compression springs.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Length	40 mm (1.57 in.)
Minimum Free Length	38.5 mm (1.52 in.)

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

Temporarily install a new gasket to the front exhaust pipe assembly.

Using a plastic hammer and wooden block, tap in the gasket until its surface is flush with the front exhaust pipe assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Front Exhaust Pipe Assembly
*2	Gasket
*a	Wooden Block

NOTE:

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

Connect the center exhaust pipe assembly (TWC: Rear Catalyst) to the 2 exhaust pipe supports.

Install the center exhaust pipe assembly (TWC: Rear Catalyst) to the front exhaust pipe assembly 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 center exhaust pipe assembly (TWC: Rear Catalyst) and front exhaust pipe assembly is consistent front-to-rear and left-to-right.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Center Exhaust Pipe Assembly (TWC: Rear Catalyst)
*2	Front Exhaust Pipe Assembly
*3	Gasket
*a	Space between Flanges: 6.5 mm (0.256 in.)

Connect the heated oxygen sensor (for Bank 2) connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Tube
*b	Wire Harness Clamp

Engage the 2 wire harness clamps so that the tube is positioned as shown in the illustration.

Connect the heated oxygen sensor (for Bank 1) connector.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Tube
*b	Wire Harness Clamp

Engage the 2 wire harness clamps so that the tube is positioned as shown in the illustration.

INSTALL TAIL EXHAUST PIPE ASSEMBLY

Using a vernier caliper, measure the free length of the 2 compression springs.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Length	40 mm (1.57 in.)
Minimum Free Length	38.5 mm (1.52 in.)

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

Temporarily install a new gasket to the center exhaust pipe assembly (TWC: Rear Catalyst).

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

*1	Center Exhaust Pipe Assembly (TWC: Rear Catalyst)
*2	Gasket
*a	Wooden Block

NOTE:

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

Connect the tail exhaust pipe assembly to the 4 exhaust pipe supports.

Install the tail exhaust pipe assembly to the center exhaust pipe assembly (TWC: 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 center exhaust pipe assembly (TWC: Rear Catalyst) is consistent front-to-rear and left-to-right.

*1	Tail Exhaust Pipe Assembly
*2	Center Exhaust Pipe Assembly (TWC: Rear Catalyst)
*3	Gasket
*a	Space between Flanges: 6.5 mm (0.256 in.)

INSPECT FOR EXHAUST GAS LEAK
If gas is leaking, tighten the areas necessary to stop the leak. Replace damaged parts as necessary.
1. Perform Inspection After Repair after repairing an exhaust gas leak.
  Refer to INITIALIZATION [12/2019 - 10/2022]