Toyota Yaris: Main Body Ecu / Installation

Toyota Yaris XP210 (2020-2022) Reapir and Service Manual / Power Source & Network / Power Distribution / Main Body Ecu / Installation

INSTALLATION

PROCEDURE

1. INSTALL MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NOTICE:

  • Make sure that the connecting surfaces are free of foreign matter.
  • Do not touch the main body ECU (multiplex network body ECU) connector.

(a) Set the main body ECU (multiplex network body ECU) to the position where the guide of the main body ECU (multiplex network body ECU) contacts the housing sidewall of the power distribution box assembly as shown in the illustration.

*a

20° or more

*b

Housing Sidewall

Set in this Direction

HINT:

Make sure to keep the angle at 20° or more as shown in the illustration.

(b) Slide the main body ECU (multiplex network body ECU) along the housing sidewall as shown in the illustration and engage the guides.

*a

Housing Sidewall

Slide in this Direction

(c) While keeping the main body ECU (multiplex network body ECU) in contact with side A of the power distribution box assembly (axis of rotation), lower it as shown in the illustration.

*a

Side A

Lower in this Direction

NOTICE:

Do not strike or apply excessive force to the side surface of the main body ECU (multiplex network body ECU).

(d) Press the push area until the claw engages to install the main body ECU (multiplex network body ECU).

*1

Power Distribution Box Assembly

*2

Main Body ECU (Multiplex Network Body ECU)

Push Area

NOTICE:

  • Make sure to press only the push area.
  • Confirm the engagement of the main body ECU (multiplex network body ECU) and power distribution box assembly by listening for the click sound of the lock engaging.

HINT:

If a click sound cannot be heard, visually check the engagement of the lock. The engagement can also be confirmed if the main body ECU (multiplex network body ECU) and power distribution box assembly are flush.

2. INSTALL WIRING HARNESS CLAMP BRACKET

(a) Engage the guides to install the wiring harness clamp bracket to the power distribution box assembly with multiplex network body ECU.

(b) Temporarily install the bolt.

3. INSTALL POWER DISTRIBUTION BOX ASSEMBLY WITH MULTIPLEX NETWORK BODY ECU

(a) Connect the connector.

*a

Lock Lever

(b) Connect the 2 connectors and pull down the lock levers to engage the claws and lock the 2 connectors as shown in the illustration.

(c) Engage the claws.

(d) Engage the claws.

(e) Install the power distribution box assembly with multiplex network body ECU with the bolt and 2 nuts.

Torque:

Nut :

8.0 N·m {82 kgf·cm, 71 in·lbf}

Bolt :

8.0 N·m {82 kgf·cm, 71 in·lbf}

(f) Connect the 5 connectors.

(g) Connect the 2 connectors and pull down the lock levers to engage the claws and lock the 2 connectors as shown in the illustration.

*a

Lock Lever

(h) Engage the clamp.

(i) Engage the clamp.

(j) Connect the 5 connectors.

4. INSTALL NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY

(a) Install the No. 3 instrument panel to cowl brace sub-assembly with the 2 bolts and nut.

Torque:

Nut :

6.0 N·m {61 kgf·cm, 53 in·lbf}

Bolt (A) :

8.0 N·m {82 kgf·cm, 71 in·lbf}

Bolt (B) :

10 N·m {102 kgf·cm, 7 ft·lbf}

*a

Bolt (A)

*b

Bolt (B)

5. INSTALL LOWER INSTRUMENT PANEL FINISH PANEL ASSEMBLY

Click here

6. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

Click here

7. ECU CONFIGURATION

Click here

8. INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

    Removal

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

    Power Integration System

    ..

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