Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001YV95
Model Year Start: 2022 Model: Avalon HV Prod Date Range: [08/2021 -           ]
Title: A25A-FXS (EMISSION CONTROL): EGR VALVE: REMOVAL; 2022 MY Avalon HV [08/2021 -        ]

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 EGR valve assembly removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedures

Effect/Inoperative Function when Necessary Procedure not Performed

Link
*: When performing learning using the Techstream.

Auxiliary battery terminal is disconnected/reconnected

Perform steering sensor zero point calibration

Lane Tracing Assist System

2022 MY Avalon Avalon HV [08/2021 -        ]; PRE-COLLISION: PRE-COLLISION SYSTEM: INITIALIZATION

Pre-collision system

Intelligent clearance sonar system*

Lighting System (for HV Model with Cornering Light)

Memorize steering angle neutral point

Parking assist monitor system

2019 - 2022 MY Avalon HV [04/2018 -        ]; PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM(for HV Model): INITIALIZATION

Panoramic view monitor system

2019 - 2022 MY Avalon HV [04/2018 -        ]; PARK ASSIST / MONITORING: PANORAMIC VIEW MONITOR SYSTEM (for HV Model): INITIALIZATION

Replacement of inverter with converter assembly

Resolver learning
  • DTCs are stored
  • Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
  • Shock or vibration during acceleration

2021 - 2022 MY Avalon HV [08/2020 -        ]; HYBRID / BATTERY CONTROL: MOTOR GENERATOR CONTROL SYSTEM (for LITHIUM-ION BATTERY): UTILITY

Replacement of ECM

Perform Vehicle Identification Number (VIN) registration

MIL illuminates

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

  • Replacement of EGR valve assembly
  • Gas leak from exhaust system is repaired

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

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.

  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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

  • 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 EGR COOLER ASSEMBLY

Click here 2022 MY Avalon HV [08/2021 -        ]; A25A-FXS (EMISSION CONTROL): EGR COOLER: REMOVAL

2. DISCONNECT ENGINE WIRE

(a) Disengage the 3 hose clamps and disconnect the No. 1 fuel vapor feed hose and No. 2 fuel vapor feed hose.

*1

No. 1 Fuel Vapor Feed Hose

*2

No. 2 Fuel Vapor Feed Hose

(b) Disconnect the EGR valve assembly connector.

(c) Remove the bolt.

(d) Disengage the 2 wire harness clamps and disconnect the engine wire.

3. REMOVE NO. 1 EGR PIPE SUB-ASSEMBLY

(a) Using an 8 mm socket wrench, remove the 4 bolts and No. 1 EGR pipe sub-assembly from the intake manifold and EGR valve assembly.

(b) Remove the EGR valve adapter gasket from the No. 1 EGR pipe sub-assembly.

(c) Remove the EGR inlet gasket from the intake manifold.

4. REMOVE EGR VALVE ASSEMBLY

(a) Slide the clip and disconnect the No. 8 water by-pass hose from the EGR valve assembly.

*1

No. 8 Water By-pass Hose

*2

No. 4 Water By-pass Hose

(b) Slide the clip and remove the No. 4 water by-pass hose from the EGR valve assembly.

(c) Using an 8 mm socket wrench, remove the 2 bolts and EGR valve assembly from the camshaft housing.