Removal [10/2017 - 09/2018]: Procedure

PRECAUTION
NOTE:
- 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.
REMOVE LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY
Refer to REMOVAL [10/2017 - 09/2018]
REMOVE NO. 1 AIR DUCT SUB-ASSEMBLY
Refer to PROCEDURE - Step 11
REMOVE NO. 1 HEATER TO REGISTER DUCT
Refer to PROCEDURE - Step 12
REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY
Refer to PROCEDURE - Step 69

REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU

Remove the 2 nuts and disconnect the ECU.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Remove the 2 nuts and disconnect the instrument panel junction block assembly with main body ECU.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the 5 connectors.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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

Detach the clamp.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw, disconnect the 2 lever connectors and remove the instrument panel junction block with main body ECU assembly.

REMOVE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Remove the nut.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Detach the claw and remove the wiring harness clamp bracket.

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.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

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 (near the internal connector).

NOTE:

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.).

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*a	Internal Connector
	Near Internal Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Horizontally Insert a Thin-bladed Screwdriver

Protective Tape

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

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

NOTE:

Replace the instrument panel junction block assembly when the connector terminal, the locking section, or the case is damaged or deformed.

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

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

Rotate in this Direction

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

Remove in this Direction