Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001AYR5
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: MAINTENANCE: A25A-FXS SPARK PLUG: 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 spark plug 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 ignition coil assembly
  • Replacement of spark plug

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

NOTICE:

This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION

PROCEDURE

1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY

Click here 2019 - 2021 MY Avalon HV [04/2018 - 08/2021]; A25A-FXS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+ 2022 MY Avalon HV [08/2021 -        ]; A25A-FXS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+

2. REMOVE IGNITION COIL ASSEMBLY

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; A25A-FXS (ENGINE CONTROL): IGNITION COIL AND SPARK PLUG: REMOVAL+

3. REMOVE SPARK PLUG

(a) Remove the 4 spark plugs from the cylinder head sub-assembly.

NOTICE:

If a spark plug has been struck or dropped, replace it.

HINT:

Arrange the removed parts in the correct order.