MAIN BODY ECU INSTALLATION

CAUTION / NOTICE / HINT

Note


  • Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

  • After the main body ECU (multiplex network body ECU) has been replaced, the automatic light control system will not operate until the engine is started.

PROCEDURE


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

    Note


    • Make sure that the connecting surfaces are free of foreign matter.

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


    1. A01VBH3C01
      *a 20° or more
      *b Housing Sidewall
      B004PI4 Set in this Direction

      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 instrument panel junction block assembly as shown in the illustration.

      Tech Tips

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

    2. A01VBG7C01
      *a Housing Sidewall
      B004PI4 Slide in this Direction

      Slide the main body ECU (multiplex network body ECU) along the housing sidewall as shown in the illustration and engage the 2 guides.

    3. A01VD5IC01
      *a Side A
      B004PI4 Install in this Direction

      While keeping the main body ECU (multiplex network body ECU) in contact with side A of the instrument panel junction block assembly (axis of rotation), lower it as shown in the illustration.

    4. A01VCL5C01
      *1 Instrument Panel Junction Block Assembly
      *2 Main Body ECU (Multiplex Network Body ECU)
      B004PFI Push Area

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

      Note


      • Make sure to press only the push area.

      • Confirm the engagement of the main body ECU (multiplex network body ECU) and instrument panel junction block assembly by listening for the click sound of the lock engaging.

      Tech Tips

      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 instrument panel junction block assembly are flush.

  2. TEMPORARILY INSTALL WIRING HARNESS CLAMP BRACKET (for LHD)


    1. A01VD13C01
      B004PI4 Install in this Direction

      Engage the claw and install the wiring harness clamp bracket as shown in the illustration.

    2. Temporarily install the bolt.

      Tech Tips

      Do not fully tighten the bolt.

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


    1. for LHD:


      1. A01VBZKC01
        B004PI4 Install in this Direction

        Connect the 2 connectors and raise the 2 lock levers to engage the 2 claws and lock the connector as shown in the illustration.

        Note

        Be sure to connect the connector securely.

      2. Engage the clamp.

      3. Engage the clamp.

      4. Install the instrument panel junction block assembly with main body ECU with the bolt and nut.

        Torque:
        8.0 N*m  { 82 kgf*cm, 71 in.*lbf }
      5. A01VBI8

        Tighten the bolt to install the wiring harness clamp bracket to the instrument panel junction block assembly with main body ECU.

        Torque:
        8.0 N*m  { 82 kgf*cm, 71 in.*lbf }
      6. A01VBERC01
        B004PI4 Install in this Direction

        Connect the 2 connectors and raise the 2 lock levers to engage the 2 claws and lock the connector as shown in the illustration.

        Note

        Be sure to connect the connector securely.

      7. Engage the clamp.

      8. Connect each connector.

    2. for RHD:


      1. A01VBY6C01
        B004PI4 Install in this Direction

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

        Note

        Be sure to connect the connector securely.

      2. Engage the clamp.

      3. Engage the clamp.

      4. Install the instrument panel junction block assembly with main body ECU with the bolt and nut.

        Torque:
        8.0 N*m  { 82 kgf*cm, 71 in.*lbf }
      5. A01VCN7C01
        B004PI4 Install in this Direction

        Connect the 2 connectors and raise the 2 lock levers to engage the 2 claws and lock the connector as shown in the illustration.

        Note

        Be sure to connect the connector securely.

      6. Engage the clamp.

      7. Connect each connector.

  4. INSTALL NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY (for LHD)

    Click here

  5. INSTALL LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY (for LHD)

    Click here

  6. INSTALL ECU INTEGRATION BOX LH (for RHD)

    Click here

  7. INSTALL GLOVE COMPARTMENT DOOR ASSEMBLY (for RHD)

    Tech Tips

    Use the same procedure for RHD and LHD.

    Click here

  8. INSTALL NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY (for RHD)

    Tech Tips

    Use the same procedure for RHD and LHD.

    Click here

  9. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL (for RHD)

    Note

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

    Click here