SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION ECU: REMOVAL; 2024 MY RAV4 RAV4 HV [10/2023

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000002EKHM
Model Year Start: 2024	Model: RAV4	Prod Date Range: [10/2023 - ]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION ECU: REMOVAL; 2024 MY RAV4 RAV4 HV [10/2023 - ]

REMOVAL

CAUTION / NOTICE / HINT

CAUTION:

Wear protective gloves. Sharp areas on the parts may injure your hands.

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during occupant detection ECU removal/installation are shown below.

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

Replaced Part or Performed Procedures	Necessary Procedures	Effect/Inoperative Function When Necessary Procedures are not Performed
1: When performing learning using the Techstream. 2: w/o Power Back Door System Click here
Disconnect cable from negative (-) auxiliary battery terminal	Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes)	Stop and start system
	Perform steering sensor zero point calibration	Lane control system
		Parking support brake system (for Gasoline model)*1
		Pre-collision system
	Reset back door close position	Power back door system (for Gasoline model)
	Back door lock initialization*2	Power door lock control system
Occupant detection ECU 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)

NOTICE:

After the ignition switch is turned off, the audio and visual system records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 2 minutes before disconnecting the cable from the negative (-) auxiliary battery terminal.
When the cable is disconnected from the negative (-) auxiliary battery terminal and the security lock setting has been enabled, multi-display operations will be disabled upon next startup unless the password is entered. Be sure to check the security lock setting before disconnecting the cable from the negative (-) auxiliary battery terminal.

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

Replaced Part or Performed Procedures	Necessary Procedures	Effect/Inoperative Function When Necessary Procedures are not Performed
*: When performing learning using the Techstream. Click here
Disconnect cable from negative (-) auxiliary battery terminal	Perform steering sensor zero point calibration	Lane control system
		Parking support brake system (for HV model)*
		Pre-collision system
	Reset back door close position	Power back door system (for HV model)
	Back door lock initialization	Power door lock control system
Occupant detection ECU 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)

NOTICE:

After the ignition switch is turned off, the audio and visual system records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 2 minutes before disconnecting the cable from the negative (-) auxiliary battery terminal.
When the cable is disconnected from the negative (-) auxiliary battery terminal and the security lock setting has been enabled, multi-display operations will be disabled upon next startup unless the password is entered. Be sure to check the security lock setting before disconnecting the cable from the negative (-) auxiliary battery terminal.

PROCEDURE

1. PRECAUTION

CAUTION:

Be sure to read precaution thoroughly before servicing.

Click here

NOTICE:

After turning the ignition 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
If the front seat airbag assembly was deployed, replace the front seat airbag assembly, front seatback frame sub-assembly, separate type front seatback pad and separate type front seatback cover with the necessary parts in accordance with the extent of the collision damage.
Replace any other damaged parts as necessary.

2. REMOVE DECK BOARD ASSEMBLY (for HV Model)

Click here

3. REMOVE REAR NO. 2 FLOOR BOARD (for HV Model)

Click here

4. REMOVE BATTERY HOLE COVER (for HV Model)

Click here

5. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

for A25A-FKS:
Click here
for A25A-FXS:
Click here

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
If the airbag deploys for any reason, it may cause a serious accident.

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

Click here

6. REMOVE FRONT SEAT ASSEMBLY RH

(a) for Manual Seat:

HINT:

Use the same procedure described for the LH side.

Click here

(b) for Power Seat:

HINT:

Use the same procedure described for the LH side.

Click here

7. REMOVE OCCUPANT DETECTION ECU

(a) for Manual Seat:

(1) Disconnect the 2 connectors.

(2) Insert a screwdriver at the position shown in the illustration and detach the claw and remove the occupant detection ECU.

NOTICE:

If the occupant detection ECU has been dropped, or there are any cracks, dents or other defects in the case or connector, replace the occupant detection ECU with a new one.

HINT:

Tape the screwdriver tip before use.

Protective Tape

(b) for Power Seat:

(1) Disconnect the 2 connectors.

Protective Tape

(2) Insert a screwdriver at the position shown in the illustration and detach the claw and remove the occupant detection ECU.

NOTICE:

If the occupant detection ECU has been dropped, or there are any cracks, dents or other defects in the case or connector, replace the occupant detection ECU with a new one.

HINT:

Tape the screwdriver tip before use.