RM35X0E _57 Power Source / Network _079061 POWER DISTRIBUTION _0383490 MAIN BODY ECU(for RHD) A

POWER DISTRIBUTION MAIN BODY ECU(for RHD) 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
Replacement part or procedure	Necessary procedures	Effect/Inoperative Function When Necessary Procedures are not Performed	Link
Disconnect cable from negative (-) battery terminal	Memorize steering angle neutral point	Parking assist monitor system	(201902,999999,_56,_079315,_0385736,RM100000001GNRA,)
Disconnect cable from negative (-) battery terminal	Memorize steering angle neutral point	Panoramic view monitor system	(201902,999999,_56,_079315,_0385736,RM100000001GNRA,)
w/ Entry and Start System: Replacement of main body ECU (multiplex network body ECU)	Code registration	· Wireless door lock control system (w/ Entry and Start System) · Entry and start system (for Entry function) · Entry and start system (for Start function) · Engine start function	See Service Bulletin for the registration method.

HINT:

When the cable is disconnected / reconnected to the battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when vehicle is driven

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
*: w/ Stop and start system
Stop and start system*	Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes).	(201902,999999,_51,_078825,_0382334,RM100000001GBQ1,)
Lane control system	Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more.	(201902,999999,_58,_078886,_0382740,RM100000001G6XB,)
Pre-collision system		(201902,999999,_58,_078886,_0382740,RM100000001G6XB,)

Learning completes when vehicle is operated normally

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
Power slide door system	Fully close the slide door by hand. HINT: Initialization is not necessary if the above procedures are performed while the slide door is closed.	(201902,999999,_59,_078503,_0381017,RM100000001FWXM,)
Air conditioning system	After the ignition switch is turned to ON, the servo motor standard position is recognized.	-

PROCEDURE

Hide Display 1. PRECAUTION

CAUTION:: Be sure to read Precaution thoroughly before servicing.; ·

for Type A:

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type A)>PRECAUTION201906,999999,_58,_079257,_0387732,RM100000001IMN3,

·

for Type B:

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>PRECAUTION201902,999999,_58,_079257,_0385034,RM100000001GJPR,

·

for Type C:

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type C)>PRECAUTION201906,999999,_58,_079257,_0396679,RM100000001IJ80,

NOTICE:: ·

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY201902,999999,_V1,_081196,_0393338,RM100000001HX6Q,

·

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.

Hide Display 2.DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

for 7GR-FKS:

Click hereGeneral>MAINTENANCE>7GR-FKS BATTERY>REMOVAL201906,999999,_V1,_078672,_0387105,RM100000001IWL9,

for 1GD-FTV:

Click hereGeneral>MAINTENANCE>1GD-FTV BATTERY>REMOVAL201906,999999,_V1,_078672,_0387106,RM100000001IWLA,

CAUTION:: ·

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

·

If the airbag deploys for any reason, it may cause a serious accident.

Hide Display 89661 3.REMOVE ECM

for 7GR-FKS:

Click hereEngine / Hybrid System>7GR-FKS (ENGINE CONTROL)>ECM>REMOVAL201906,999999,_51,_078720,_0381918,RM100000001IOND,

for 1GD-FTV:

Click hereEngine / Hybrid System>1GD-FTV (ENGINE CONTROL)>ECM>REMOVAL201906,202005,_51,_078856,_0387390,RM100000001IRG8,202005,202107,_51,_078856,_0387390,RM100000001O3OH,202107,202208,_51,_078856,_0387390,RM100000001WVNP,202208,999999,_51,_078856,_0387390,RM1000000025S9G,

Hide Display 4.REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU

for Automatic Air Conditioning System:

Disconnect the connector.

ii.

Detach the wire harness clamp.

for Manual Air Conditioning System:

Disconnect the connector.

ii.

Detach the wire harness clamp.

iii.

Disconnect the connector.

iv.

Detach the wire harness clamp.

w/ PTC heater:

Disconnect the 3 connectors.

Disconnect the 5 connectors.

1.156,0.833 1.771,0.833 true 1.771,1.24 1.417,1.24 1.417,1.24 1.417,0.833 true 0.927,0.76 1.146,0.927 0.219,0.167 10 true *a

*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.

Disconnect the 2 connectors.

Disconnect the 3 connectors.

Remove the nut and disconnect the instrument panel junction block assembly with main body ECU together with the connector holder.

Detach the claw and disconnect the instrument panel junction block assembly with main body ECU from the connector holder.

0,0 0,0 false

	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 and remove the instrument panel junction block assembly with main body ECU.

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

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.

4.271,4.479 4.698,4.479 false 4.906,5.146 4.906,4.708 false 4.854,5.188 5.167,5.344 0.313,0.156 10 false *a 4.083,4.396 4.396,4.552 0.313,0.156 10 false *b

*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.

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.).

0,0 0,0 false

Horizontally Insert a Thin-bladed Screwdriver

Protective Tape

0.635,1.594 1.25,1.594 true 0.448,1.5 0.76,1.656 0.313,0.156 10 false *a

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

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

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.

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

0,0 0,0 false

Rotate in this Direction

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

0,0 0,0 false

Remove in this Direction

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