Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Removal

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Supplemental Restraint Systems / Center Airbag Sensor Assembly / Removal

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

Replacement of the airbag ECU assembly

Perform system variant learning and acceleration sensor zero point calibration
  • VSC is disabled or malfunctions
  • DTCs are output
  • Slip indicator light illuminates
  • ABS warning light illuminates

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)

Disconnect cable from negative auxiliary battery terminal

Perform steering sensor zero point calibration

Lane Departure Alert System (w/ Steering Control)

Pre-collision System

Intelligent Clearance Sonar System*

Lighting System (for Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

Panoramic View Monitor System

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

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

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)

Disconnect cable from negative auxiliary battery terminal

Perform steering sensor zero point calibration

Lane Departure Alert System (w/ Steering Control)

Pre-collision System

Intelligent Clearance Sonar System*

Lighting System (for HV Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

Panoramic View Monitor System

PROCEDURE

1. PRECAUTION

CAUTION:

Be sure to read Precaution thoroughly before servicing.

for Gasoline Model: Click here

for HV Model: Click here

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

2. REMOVE FRONT SEAT ASSEMBLY

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

Click here

3. REMOVE CONSOLE ASSEMBLY

Click here

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

Click here

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

Click here

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

Click here

7. REMOVE FRONT DOOR SCUFF PLATE LH

Click here

8. REMOVE COWL SIDE TRIM SUB-ASSEMBLY LH

Click here

9. 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.

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

Click here

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

Click here

12. 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.

13. REMOVE CENTER PILLAR LOWER GARNISH LH

Click here

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

Click here

15. REMOVE FRONT DOOR SCUFF PLATE RH

HINT:

Use the same procedure as for the LH side.

Click here

16. REMOVE COWL SIDE TRIM SUB-ASSEMBLY RH

HINT:

Use the same procedure as for the LH side.

Click here

17. 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.

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

HINT:

Use the same procedure as for the LH side.

Click here

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

HINT:

Use the same procedure as for the LH side.

Click here

20. 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.

21. REMOVE CENTER PILLAR LOWER GARNISH RH

HINT:

Use the same procedure as for the LH side.

Click here

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

Click here

23. REMOVE ACCELERATOR PEDAL PAD

for 2GR-FKS: Click here

for A25A-FXS: Click here

24. REMOVE ACCELERATOR PEDAL

for 2GR-FKS: Click here

for A25A-FXS: Click here

25. 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.

26. 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.

27. 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.
    On-vehicle Inspection

    Curtain Shield Airbag Assembly

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