POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL; 2024 MY RAV4 RAV4 HV [10/2023

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000002EKHP
Model Year Start: 2024	Model: RAV4	Prod Date Range: [10/2023 - ]
Title: POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL; 2024 MY RAV4 RAV4 HV [10/2023 - ]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the main body ECU (multiplex network body ECU) removal/installation are shown below.

Necessary Procedure 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
	Back door lock initialization	Power door lock control system
w/ Smart Key System: Main body ECU (multiplex network body ECU)	Code registration	Wireless door lock control system (for HV model, with smart key system) Smart key system (for Entry function, HV model) Smart key system (for start function, HV model) Hybrid control system cannot be started

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 Procedure 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
w/ Smart Key System: Main body ECU (multiplex network body ECU)	Code registration	Wireless door lock control system (for Gasoline model, with smart key system) Smart key system (for Entry function, Gasoline model) Smart key system (for Start function, Gasoline model) Engine start function

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:

Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system 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
Do not remove the main body ECU (multiplex network body ECU) except when replacing it.
When removing the main body ECU (multiplex network body ECU), always replace it with a new one.

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

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 LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY

Click here

7. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY (for TMC Made)

(a) Detach the 2 wire harness clamps.

(b) Remove the nut, bolt and No. 3 instrument panel to cowl brace sub-assembly.

	Nut
	Bolt

8. REMOVE CENTER INSTRUMENT PANEL BRACKET SUB-ASSEMBLY (for TMMC Made)

HINT:

Use the same procedure described as for the No. 3 instrument panel to cowl brace sub-assembly (for TMC Made).

9. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU

(a) Detach the 2 wire harness clamps.

*a	w/ Clearance Warning System

(b) w/ Clearance Warning System:

(1) Disconnect the 5 connectors.

(1) Disconnect the 4 connectors.

(d) Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw and disconnect the 2 lever connectors.

*a	Lever Connector
	Rotate in this Direction
	Protective Tape

(e) Detach the wire harness clamp.

(f) Disconnect the 2 connectors.

(g) Disconnect the 5 connectors.

(h) Remove the 2 nuts.

(i) Detach the claw and disconnect the instrument panel junction block assembly with main body ECU.

(j) Detach the claw and remove the instrument panel junction block assembly with main body ECU from the connector holder.

(k) Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw and disconnect the 2 lever connectors.

*a	Lever Connector	-	-
	Rotate in this Direction		Protective Tape

(l) Detach the wire harness clamp and remove the instrument panel junction block assembly with main body ECU.

10. REMOVE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Detach the claw and remove the junction block bracket from the instrument panel junction block assembly with main body ECU.

(b) Press the lock of the instrument panel junction block assembly and release the lock of the main body ECU (multiplex network body ECU) as shown in the illustration.

*a	Instrument Panel Junction Block Assembly	*b	Main Body ECU (Multiplex Network Body ECU)
	Movement Direction		Instrument Panel Junction Block Assembly Lock

(c) While pressing the lock, horizontally insert a thin-bladed screwdriver with its tip wrapped with protective tape between the main body ECU (multiplex network body ECU) and instrument panel junction block assembly.

NOTICE:

Use a screwdriver with a diameter between 5.0 mm (0.197 in.) and 6.3 mm (0.248 in.) and a length of approximately 90 mm (3.54 in.).

Horizontally Insert a Thin-bladed Screwdriver

Protective Tape

(d) When the thin-bladed screwdriver with its tip wrapped with protective tape is inserted, the internal connector lock is released.

*a	Internal Connector
	Insert a Thin-bladed Screwdriver in this Direction
	Released in this Direction
	Protective Tape

NOTICE:

Do not twist the screwdriver to raise the main body ECU (multiplex network body ECU).
Do not excessively insert the screwdriver. Otherwise, the internal connector terminals may become deformed or damaged.
Replace the instrument panel junction block assembly when the connector terminal, the locking section, or the case is damaged or deformed.

(e) Hold the rib of the main body ECU (multiplex network body ECU).

(f) While rotating the main body ECU (multiplex network body ECU), completely release the lock.

Rotate in this Direction

(g) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

Remove in this Direction

REMOVAL

CAUTION / NOTICE / HINT

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

w/ Smart Key System:

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

w/ Smart Key System:

PROCEDURE