MAIN BODY ECU 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 Effects/Inoperative when not performed Link
Disconnect cable from negative battery terminal Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes) Stop and Start System (for 2AR-FE)

Click here

Stop and Start System (for 2GR-FKS)

Click here

Memorize steering angle neutral point Panoramic view monitor system

Click here

Initialize back door lock Power door lock control system

Click here

Initialize servo motor Air Conditioning System

Click here

Reset slide door close position Power slide door system

Click here

Reset back door close position Power back door system

Click here

Replacement of main body ECU (multiplex network body ECU) Perform code registration (Immobiliser system)

  • Wireless door lock control system

  • Smart entry and start system

  • Engine start function

  • Steering lock system

 See Service Bulletin for the registration method.
Turning the engine switch on (IG) Automatic light control system

Click here

PROCEDURE


  1. PRECAUTION (for RHD)

    Note

    After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

    Click here

  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL (for RHD)

    Note

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

    Click here

  3. REMOVE LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY (for LHD)

    Click here

  4. REMOVE COWL SIDE TRIM BOARD LH (for LHD)

    Click here

  5. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL ASSEMBLY (for LHD)

    Click here

  6. REMOVE CONSOLE BOX ASSEMBLY (for RHD)

    for Integrated Console Box Type: Click here

  7. REMOVE CENTER NO. 2 INSTRUMENT CLUSTER FINISH PANEL (for RHD)

    for Separate Console Box Type: Click here

  8. REMOVE CENTER NO. 1 INSTRUMENT CLUSTER FINISH PANEL (for RHD)

    for Separate Console Box Type: Click here

  9. REMOVE UPPER INSTRUMENT PANEL FINISH PANEL (for RHD)

    Click here

  10. REMOVE INSTRUMENT PANEL BOX ASSEMBLY (for RHD)

    for Separate Console Box Type: Click here

  11. REMOVE INSTRUMENT CLUSTER FINISH PANEL ASSEMBLY (for RHD)

    for Separate Console Box Type: Click here

  12. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY (for RHD)

    Click here

  13. REMOVE NO. 3 INSTRUMENT CLUSTER FINISH PANEL GARNISH (for RHD)

    Click here

  14. REMOVE COWL SIDE TRIM BOARD LH (for RHD)

    Click here

  15. REMOVE NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY (for RHD)

    Click here

  16. REMOVE LOWER NO. 2 INSTRUMENT PANEL FINISH PANEL (for RHD)

    Click here

  17. REMOVE LOWER INSTRUMENT PANEL (for RHD)

    Click here

  18. REMOVE JUNCTION BLOCK ASSEMBLY LH WITH MAIN BODY ECU (for LHD)


    1. B006QTG

      Disconnect each connector.

    2. B006M30C02
      B006N8A Remove in this Direction

      Disengage the claw and pull down the lock lever to disconnect the connector as shown in the illustration.

    3. B006N0VC02
      B006N8A Remove in this Direction

      Disengage the claw and pull down the lock lever to disconnect the connector as shown in the illustration.

    4. B006Q6PC01
      B006QOD Bolt
      B006LKF Nut

      Remove the bolt and nut.

    5. Disengage the clamp.

    6. B006ORZ

      Disengage the 2 claws to disconnect the junction block assembly LH with main body ECU.

    7. Pull out the junction block assembly LH with main body ECU.

    8. B006LK5C02
      B006N8A Remove in this Direction

      Disengage the claw and raise the lock lever to disconnect the connector as shown in the illustration.

    9. w/ Connector Lock:


      1. B006RC2C02
        B006N8A Remove in this Direction

        Disengage the claw and slide the connector lock as shown in the illustration.

    10. B006RLGC02
      B006N8A Remove in this Direction

      Disengage the claw and raise the lock lever to disconnect the connector as shown in the illustration and remove the junction block assembly LH with main body ECU.

  19. REMOVE JUNCTION BLOCK ASSEMBLY LH WITH MAIN BODY ECU (for RHD)


    1. B006PIE

      Disconnect each connector.

    2. Disengage the clamp.

    3. B006OUW

      Disconnect each connector.

    4. B006Q2AC05
      B006N8A Remove in this Direction

      Disengage the claw and pull down the lock lever to disconnect the connector as shown in the illustration.

    5. B006O6SC05
      B006N8A Remove in this Direction

      Disengage the claw and pull down the lock lever to disconnect the connector as shown in the illustration.

    6. B006Q0KC01
      B006QOD Bolt
      B006LKF Nut

      Remove the bolt and nut.

    7. B006NLG

      Disengage the 2 claws to disconnect the junction block assembly LH with main body ECU.

    8. Pull out the junction block assembly LH with main body ECU.

    9. B006OOIC04
      B006N8A Remove in this Direction

      Disengage the claw and raise the lock lever to disconnect the connector as shown in the illustration.

    10. w/ Connector Lock:


      1. B006MR5C06
        B006N8A Remove in this Direction

        Disengage the claw and slide the connector lock as shown in the illustration.

    11. B006LAIC05
      B006N8A Remove in this Direction

      Disengage the claw and raise the lock lever to disconnect the connector as shown in the illustration and remove the junction block assembly LH with main body ECU.

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


    1. B006N7HC01
      *1 Junction block assembly LH
      *2 Main Body ECU (Multiplex Network Body ECU)
      B006QOD Push in this Direction

      Press the claw of the junction block assembly LH as shown in the illustration to release the lock.

    2. B006R79C01
      *a Protective Tape
      B006QOD Insert in this Direction
      B006NJK Remove in this Direction

      With the junction block assembly LH 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 LH.

      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.).

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

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

      Note

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

    4. B006OBIC02
      B006N8A Remove in this Direction (1)
      B006NJK Remove in this Direction (2)

      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.

      Note

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