Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001BMO2
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: A25A-FXS (INTAKE / EXHAUST): EXHAUST PIPE: REMOVAL; 2019 - 2022 MY Avalon HV [04/2018 -        ]

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 front exhaust pipe assembly (TWC: Rear Catalyst), center exhaust pipe assembly and tail exhaust pipe assembly 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 2)
  • Gas leak from exhaust system is repaired

Inspection After Repair
  • Poor idle, etc.
  • Engine start function, etc.

2019 MY Avalon HV [04/2018 - 08/2019]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION 2020 - 2021 MY Avalon HV [08/2019 - 08/2021]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION 2022 MY Avalon HV [08/2021 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION

CAUTION:

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

PROCEDURE

1. REMOVE TAIL EXHAUST PIPE ASSEMBLY LH

CAUTION:

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

(a) Remove the 2 bolts and disconnect the tail exhaust pipe assembly LH from the center exhaust pipe assembly.

(b) Remove the tail exhaust pipe assembly LH from the 2 exhaust pipe supports.

(c) Remove the gasket from the center exhaust pipe assembly.

2. REMOVE CENTER EXHAUST PIPE ASSEMBLY

CAUTION:

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

(a) Remove the 2 bolts and disconnect the center exhaust pipe assembly from the front exhaust pipe assembly (TWC: Rear Catalyst).

(b) Remove the center exhaust pipe assembly from the 2 exhaust pipe supports.

(c) Remove the gasket from the front exhaust pipe assembly (TWC: Rear Catalyst).

3. REMOVE FRONT FLOOR COVER LH

(a) Remove the 3 bolts and 4 clips (A).

(b) Disengage the grommet (B) and 6 clips (C) to remove the front floor cover LH.

4. REMOVE FRONT FLOOR COVER RH

(a) Remove the 3 bolts and 4 clips (A).

(b) Disengage the grommet (B) and 6 clips (C) to remove the front floor cover RH.

5. REMOVE FRONT CENTER FLOOR BRACE

(a) Remove the 4 bolts and front center floor brace from the vehicle body.

6. REMOVE CENTER FLOOR CROSSMEMBER BRACE

(a) Remove the 4 bolts and center floor crossmember brace from the vehicle body.

7. REMOVE AIR FUEL RATIO SENSOR (for Sensor 2)

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; A25A-FXS (ENGINE CONTROL): AIR FUEL RATIO SENSOR (for Sensor 2): REMOVAL

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

CAUTION:

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

(a) Remove the 2 nuts and disconnect the front exhaust pipe assembly (TWC: Rear Catalyst) from the exhaust manifold (TWC: Front Catalyst).

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

(c) Remove the gasket from the front exhaust pipe assembly (TWC: Rear Catalyst).