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                        | Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001B4FX |  
                        | Model Year Start: 2019 | Model: Avalon HV | Prod Date Range: [04/2018 -                    
                                       ] |  
                        | Title: A25A-FXS (ENGINE CONTROL): IGNITION COIL AND SPARK PLUG: REMOVAL; 2019 - 2022 MY Avalon HV [04/2018 -        ] |  REMOVALCAUTION / NOTICE / HINTThe necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during ignition coil assembly or 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.
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                                          ![2019 MY Avalon HV [04/2018 - 08/2019]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION](/t3Portal/stylegraphics/info.gif)  ![2020 - 2021 MY Avalon HV [08/2019 - 08/2021]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION](/t3Portal/stylegraphics/info.gif)  ![2022 MY Avalon HV [08/2021 -        ]; A25A-FXS (ENGINE CONTROL): SFI SYSTEM: INITIALIZATION](/t3Portal/stylegraphics/info.gif)  |  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](/t3Portal/stylegraphics/info.gif)  PROCEDURE1. 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+](/t3Portal/stylegraphics/info.gif)  ![2022 MY Avalon HV [08/2021 -        ]; A25A-FXS (ENGINE MECHANICAL): ENGINE ASSEMBLY: REMOVAL+](/t3Portal/stylegraphics/info.gif)  2. REMOVE IGNITION COIL ASSEMBLY 
                     
                        
                           | (a) Disconnect the 4 ignition coil assembly connectors. |  |  (b) Using an 8 mm socket wrench, remove the 4 bolts and 4 ignition coil assemblies from the cylinder head cover sub-assembly. NOTICE: If an ignition coil assembly has been struck or dropped, replace it. HINT: Arrange the removed parts in the correct order. 3. REMOVE SPARK PLUG Click here
                        
                           
                              ![2019 - 2022 MY Avalon HV [04/2018 -        ]; MAINTENANCE: A25A-FXS SPARK PLUG: REMOVAL+](/t3Portal/stylegraphics/info.gif)  |