POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL; 2021 - 2024 MY Camry HV [10/2020

Last Modified: 11-20-2023	6.11:8.1.0	Doc ID: RM100000001T5JG
Model Year Start: 2021	Model: Camry HV	Prod Date Range: [10/2020 - ]
Title: POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL; 2021 - 2024 MY Camry HV [10/2020 - ]

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 main body ECU (multiplex network body ECU) removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed
Disconnect cable from negative auxiliary battery terminal	Perform steering sensor zero point calibration	Lane Tracing Assist System
		Pre-collision system
		Lighting system (w/ AFS)(EXT)
	Memorize steering angle neutral point	Parking assist monitor system
	Memorize steering angle neutral point	Panoramic view monitor system
Main body ECU (multiplex network body ECU)	Code registration (Smart key System (for Start Function)	Wireless door lock control system Smart key system (for Entry Function) Smart key system (for Start Function) Steering lock function

CAUTION:

Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system before servicing.

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PROCEDURE

1. REMOVE LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY

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2. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY

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

(a) Disconnect each connector.

(b) Disengage the clamp.

Remove in this Direction

(d) Disconnect each connector.

(e) Remove the bolt and 2 nuts.

	Nut
	Bolt

(f) Disengage the claw and guide and pull out the instrument panel junction block assembly with main body ECU.

Remove in this Direction

(g) Disengage the clamp.

(h) Disengage the clamp.

(i) Disengage the 2 claws and pull down the 2 lock levers to disconnect the 2 connectors as shown in the illustration and remove the instrument panel junction block assembly with main body ECU.

Remove in this Direction

4. REMOVE WIRING HARNESS CLAMP BRACKET

(a) Remove the nut.

(b) Disengage the guide to remove the wiring harness clamp bracket.

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

(a) Press the claw of the instrument panel junction block assembly as shown in the illustration to release the lock.

*1	Instrument Panel Junction Block Assembly
*2	Main Body ECU (Multiplex Network Body ECU)
	Push in this Direction

(b) With the instrument panel junction block assembly lock released, insert a screwdriver with its tip wrapped with protective tape horizontally between the main body ECU (multiplex network body ECU) and junction block assembly.

*a	Protective Tape
	Insert in this Direction
	Remove in this Direction

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.).
Do not insert the screwdriver under the connector socket of the main body ECU (multiplex network body ECU).

(c) Using the screwdriver, carefully raise the main body ECU (multiplex network body ECU) to the position where the connector becomes disconnected.

NOTICE:

Do not twist the screwdriver to raise the main body ECU (multiplex network body ECU).

(d) Raise the main body ECU (multiplex network body ECU) as shown by the arrow (1), and then pull it out as shown by the arrow (2) in the illustration.

	Remove in this Direction (1)
	Remove in this Direction (2)

NOTICE:

Do not touch the main body ECU (multiplex network body ECU) connector.