Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001BMP0
Model Year Start: 2019 Model: Avalon Prod Date Range: [04/2018 -           ]
Title: 2GR-FKS (INTAKE / EXHAUST): EXHAUST MANIFOLD: REMOVAL; 2019 - 2022 MY Avalon [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 exhaust manifold assembly RH (TWC: Front Catalyst) and exhaust manifold assembly LH (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
  • Gas leak from exhaust system is repaired

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

2019 MY Avalon [04/2018 - 08/2019]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION 2020 - 2022 MY Avalon [08/2019 -        ]; 2GR-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

Click here 2019 - 2022 MY Avalon [04/2018 -        ]; 2GR-FKS (INTAKE / EXHAUST): EXHAUST PIPE: REMOVAL+

2. REMOVE FRONT FLOOR COVER RH

Click here 2019 - 2022 MY Avalon [04/2018 -        ]; 2GR-FKS (INTAKE / EXHAUST): EXHAUST PIPE: REMOVAL+

3. REMOVE BODY MOUNTING PLATE

Click here 2019 - 2022 MY Avalon [04/2018 -        ]; 2GR-FKS (INTAKE / EXHAUST): EXHAUST PIPE: REMOVAL+

4. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET (for Lower Side)

Click here 2019 - 2022 MY Avalon [04/2018 -        ]; 2GR-FKS (INTAKE / EXHAUST): EXHAUST PIPE: REMOVAL+

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

(a) Disconnect the 2 heated oxygen sensor connectors.

(b) Disengage the 2 wire harness clamps.

(c) Remove the 4 bolts, 4 nuts and disconnect the front exhaust pipe assembly (TWC: Rear Catalyst).

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

(e) Remove the 3 gaskets from the front exhaust pipe assembly (TWC: Rear Catalyst).

6. REMOVE AIR FUEL RATIO SENSOR (for Bank 1)

Click here 2019 - 2022 MY Avalon [04/2018 -        ]; 2GR-FKS (ENGINE CONTROL): AIR FUEL RATIO SENSOR: REMOVAL+

7. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR

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

8. REMOVE EXHAUST MANIFOLD ASSEMBLY RH (TWC: Front Catalyst)

(a) Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly RH (TWC: Front Catalyst) from the cylinder head sub-assembly RH.

9. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 1)

(a) Remove the exhaust manifold to head gasket (for Bank 1) from the cylinder head sub-assembly RH.

10. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2022 MY Avalon [08/2021 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

11. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2022 MY Avalon [08/2021 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

12. REMOVE NO. 1 ENGINE UNDER COVER

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2022 MY Avalon [08/2021 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

13. REMOVE REAR ENGINE UNDER COVER RH

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2022 MY Avalon [08/2021 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

14. REMOVE V-BANK COVER SUB-ASSEMBLY

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2022 MY Avalon [08/2021 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

15. REMOVE COOL AIR INTAKE DUCT SEAL

Click here 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021]; EXTERIOR PANELS / TRIM: FRONT BUMPER: REMOVAL+ 2022 MY Avalon Avalon HV [08/2021 -        ]; EXTERIOR PANELS / TRIM: FRONT BUMPER: REMOVAL+

16. REMOVE AIR FUEL RATIO SENSOR (for Bank 2)

Click here 2019 - 2022 MY Avalon [04/2018 -        ]; 2GR-FKS (ENGINE CONTROL): AIR FUEL RATIO SENSOR: REMOVAL+

17. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE

Click here 2019 - 2021 MY Avalon [04/2018 - 08/2021]; 2GR-FKS (ENGINE MECHANICAL): ENGINE UNIT: REMOVAL+ 2022 MY Avalon [08/2021 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE UNIT: REMOVAL+

18. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR

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

19. REMOVE NO. 2 MANIFOLD STAY

(a) Remove the bolt, nut and No. 2 manifold stay from the exhaust manifold assembly LH (TWC: Front Catalyst) and cylinder block sub-assembly.

Bolt

Nut

20. DISCONNECT NO. 5 WATER BY-PASS HOSE

(a) Disengage the 2 clamps to disconnect the No. 5 water by-pass hose and No. 6 water by-pass hose from the hose clamp.

21. REMOVE EXHAUST MANIFOLD ASSEMBLY LH (TWC: Front Catalyst)

(a) Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly LH (TWC: Front Catalyst).

22. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 2)

(a) Remove the exhaust manifold to head gasket (for Bank 2) from the cylinder head sub-assembly.

23. REMOVE STUD BOLT

HINT:

If a stud bolt is deformed or its threads are damaged, replace it.

(a) Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the exhaust manifold assembly LH (TWC: Front Catalyst).