Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001YLHU
Model Year Start: 2022 Model: Avalon HV Prod Date Range: [08/2021 -           ]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: CENTER AIRBAG SENSOR ASSEMBLY: REMOVAL; 2022 MY Avalon 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 airbag ECU assembly removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced (for Gasoline Model)

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*: When performing learning using the Techstream.

Click here 2019 - 2022 MY Avalon [04/2018 -        ]; PARK ASSIST / MONITORING: INTELLIGENT CLEARANCE SONAR SYSTEM (for Gasoline Model): CALIBRATION

Replacement of the airbag ECU assembly

Reset memory

Dynamic Torque Control AWD System

2021 - 2022 MY Avalon [08/2020 -        ]; GF1A (TRANSFER / 4WD / AWD): DYNAMIC TORQUE CONTROL AWD SYSTEM: CALIBRATION

  • Perform "Reset Memory"
  • Perform acceleration sensor zero point calibration and system information memorization
  • VSC is disabled or malfunctions
  • DTCs are output
  • Slip indicator light illuminates
  • ABS warning light illuminates

2022 MY Avalon [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model): CALIBRATION

Removal/installation of the front passenger seat

Zero point calibration (Occupant Classification System)

  • Occupant Classification System
  • Passenger airbag ON/OFF indicator
  • Airbag System (Front passenger side)
  • Seat Belt Warning System (Front passenger)

2019 - 2022 MY Avalon [04/2018 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM (for Gasoline Model): INITIALIZATION

Disconnect cable from negative auxiliary battery terminal

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 Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

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

Panoramic View Monitor System

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

Necessary Procedures After Parts Removed/Installed/Replaced (for HV Model)

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*: When performing learning using the Techstream.

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; PARK ASSIST / MONITORING: INTELLIGENT CLEARANCE SONAR SYSTEM (for HV Model): CALIBRATION

Replacement of the airbag ECU assembly

  1. Clear zero point calibration data
  2. Perform yaw rate and acceleration sensor zero point calibration
  • DTCs are stored
  • ABS warning light illuminates
  • Brake warning light / yellow (minor malfunction) illuminates
  • Slip indicator light illuminates
  • VSC disabled or malfunctions

2022 MY Avalon HV [08/2021 -        ]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): CALIBRATION

Removal/installation of the front passenger seat

Zero point calibration (Occupant classification system)

  • Occupant classification system
  • Passenger airbag ON/OFF indicator
  • Airbag system (Front passenger side)
  • Seat belt warning system (Front passenger)

2019 - 2022 MY Avalon HV [04/2018 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM (for HV Model): INITIALIZATION

Disconnect cable from negative auxiliary battery terminal

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

PROCEDURE

1. PRECAUTION

CAUTION:

Be sure to read Precaution thoroughly before servicing.

for Gasoline Model: Click here 2021 - 2022 MY Avalon [08/2020 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for Gasoline Model): PRECAUTION

for HV Model: Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for HV Model): PRECAUTION

NOTICE:

After turning the engine switch (for Gasoline Model) or power switch (for HV Model) 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

2. REMOVE FRONT SEAT ASSEMBLY

(a) Remove the front seat assembly LH and front seat assembly RH.

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; SEAT: FRONT SEAT ASSEMBLY: REMOVAL

3. REMOVE CONSOLE ASSEMBLY

Click here 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]; INTERIOR PANELS / TRIM: FRONT CONSOLE BOX: REMOVAL

4. REMOVE SPARE WHEEL COVER ASSEMBLY (for Gasoline Model with Seat Heater System)

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; DOOR / HATCH: LUGGAGE COMPARTMENT DOOR SUPPORT: REMOVAL+

5. REMOVE LUGGAGE COMPARTMENT INNER TRIM PAD (for Gasoline Model with Seat Heater System)

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; DOOR / HATCH: LUGGAGE COMPARTMENT DOOR SUPPORT: REMOVAL+

6. DISCONNECT REAR CENTER SEAT OUTER BELT ASSEMBLY (for Gasoline Model)

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; SEAT: REAR SEAT ASSEMBLY: REMOVAL+

7. REMOVE REAR SEAT CUSHION ASSEMBLY (for Gasoline Model)

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; SEAT: REAR SEAT ASSEMBLY: REMOVAL+

8. REMOVE REAR SEAT CUSHION LOCK HOOK (for Gasoline Model)

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; SEAT: REAR SEAT ASSEMBLY: REMOVAL+

9. REMOVE FRONT DOOR SCUFF PLATE LH

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: REMOVAL+

10. REMOVE COWL SIDE TRIM SUB-ASSEMBLY LH

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: REMOVAL+

11. DISCONNECT FRONT DOOR OPENING TRIM WEATHERSTRIP LH

HINT:

Disconnect the front door opening trim weatherstrip LH to the extent that allows the removal of the center pillar lower garnish LH.

12. REMOVE REAR DOOR SCUFF PLATE LH (for Gasoline Model)

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: REMOVAL+

13. REMOVE REAR DOOR SCUFF PLATE LH (for HV Model)

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: REMOVAL+

14. DISCONNECT REAR DOOR OPENING TRIM WEATHERSTRIP LH

HINT:

Disconnect the rear door opening trim weatherstrip LH to the extent that allows the removal of the center pillar lower garnish LH.

15. REMOVE CENTER PILLAR LOWER GARNISH LH

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: REMOVAL+

16. REMOVE NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: INSTRUMENT PANEL SAFETY PAD: REMOVAL+

17. REMOVE FRONT DOOR SCUFF PLATE RH

HINT:

Use the same procedure as for the LH side.

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: REMOVAL+

18. REMOVE COWL SIDE TRIM SUB-ASSEMBLY RH

HINT:

Use the same procedure as for the LH side.

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: REMOVAL+

19. DISCONNECT FRONT DOOR OPENING TRIM WEATHERSTRIP RH

HINT:

Disconnect the front door opening trim weatherstrip RH to the extent that allows the removal of the center pillar lower garnish RH.

20. REMOVE REAR DOOR SCUFF PLATE RH (for Gasoline Model)

HINT:

Use the same procedure as for the LH side.

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: REMOVAL+

21. REMOVE REAR DOOR SCUFF PLATE RH (for HV Model)

HINT:

Use the same procedure as for the LH side.

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: REMOVAL+

22. DISCONNECT REAR DOOR OPENING TRIM WEATHERSTRIP RH

HINT:

Disconnect the rear door opening trim weatherstrip RH to the extent that allows the removal of the center pillar lower garnish RH.

23. REMOVE CENTER PILLAR LOWER GARNISH RH

HINT:

Use the same procedure as for the LH side.

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: ROOF HEADLINING: REMOVAL+

24. REMOVE NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY

Click here 2022 MY Avalon Avalon HV [08/2021 -        ]; INTERIOR PANELS / TRIM: INSTRUMENT PANEL SAFETY PAD: REMOVAL+

25. REMOVE ACCELERATOR PEDAL PAD

for 2GR-FKS: Click here 2019 - 2022 MY Avalon [04/2018 -        ]; 2GR-FKS (ENGINE CONTROL): ACCELERATOR PEDAL: REMOVAL+

for A25A-FXS: Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; HYBRID / BATTERY CONTROL: ACCELERATOR PEDAL SENSOR: REMOVAL+

for A25A-FKS: Click here 2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): ACCELERATOR PEDAL: REMOVAL+

26. REMOVE ACCELERATOR PEDAL

for 2GR-FKS: Click here 2019 - 2022 MY Avalon [04/2018 -        ]; 2GR-FKS (ENGINE CONTROL): ACCELERATOR PEDAL: REMOVAL+

for A25A-FXS: Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; HYBRID / BATTERY CONTROL: ACCELERATOR PEDAL SENSOR: REMOVAL+

for A25A-FKS: Click here 2021 - 2022 MY Avalon [08/2020 -        ]; A25A-FKS (ENGINE CONTROL): ACCELERATOR PEDAL: REMOVAL+

27. DISCONNECT FRONT FLOOR CARPET ASSEMBLY

(a) Remove the front floor carpet clip.

(b) Remove the 2 front floor carpet clips.

(c) Disengage the 2 guides and turn back the front floor carpet assembly as shown in the illustration.

(d) Remove the front floor carpet clip.

(e) Remove the 2 front floor carpet clips.

(f) Disengage the 2 guides and turn back the front floor carpet assembly as shown in the illustration.

28. REMOVE NO. 1 CONSOLE BOX DUCT

(a) Remove the clip.

Remove in this Direction

(b) Remove the No. 1 console box duct as shown in the illustration.

29. REMOVE AIRBAG ECU ASSEMBLY

(a) Check that the engine switch (for Gasoline Model) or power switch (for HV Model) is off.

(b) Check that the cable is disconnected from the negative (-) auxiliary battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

(c) Push down the part (A) in the direction indicated by the arrow (1) to release the lock, and then move the lock lever in the direction indicated by the arrow (2) shown in the illustration to disconnect the connectors.

NOTICE:

When disconnecting any airbag connector, take care not to damage the airbag wire harness.

*a

Lock Lever

Release the lock (1)

Disconnect the connector (2)

(d) Remove the 3 bolts and airbag ECU assembly.