MAIN BODY ECU REMOVAL

PROCEDURE


  1. PRECAUTION

    Note


    • After turning the ignition 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.

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      for LHD

    • To prevent damage to the main body ECU (multiplex network body ECU), disconnect the cable from the negative (-) battery terminal and discharge the door control battery before replacing or removing/installing the main body ECU (multiplex network body ECU).

  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

    Note

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

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    1. Discharge the door control battery. (for LHD)

      Tech Tips

      The door control battery will discharge completely within approximately 30 minutes after the ignition switch is turned off.

      The time required to discharge the door control battery is reduced when it is not fully charged.


      1. Connect the GTS to the DLC3.

      2. Turn the GTS on.

      3. Enter the following menus: Body Electrical / Main Body / Active Test.

      4. Disconnect the cable from the negative (-) battery terminal.

      5. Perform the Active Test according to the display on the GTS.


        Body Electrical > Main Body > Active Test
        Tester Display Measurement Item Control Range Diagnostic Note
        Shock Detection Unlock Operate door lock motor UNLOCK/LOCK -

        Body Electrical > Main Body > Active Test
        Tester Display
        Shock Detection Unlock

        Tech Tips

        Perform the Active Test until the door lock/unlock operation can no longer be performed and "Lost communication with vehicle" is displayed on the GTS.

  3. REMOVE FRONT DOOR SCUFF PLATE LH

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  4. REMOVE COWL SIDE TRIM SUB-ASSEMBLY LH

    Click here

  5. DISCONNECT FRONT DOOR OPENING TRIM WEATHERSTRIP LH

    Click here

  6. REMOVE INSTRUMENT PANEL FINISH PANEL END LH

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  7. REMOVE NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY (for LHD)

    Click here

  8. DISCONNECT HOOD LOCK CONTROL LEVER SUB-ASSEMBLY (for LHD)

    Click here

  9. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY (for LHD)

    Click here

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

    Click here

  11. REMOVE LOWER INSTRUMENT PANEL SUB-ASSEMBLY (for RHD)

    Click here

  12. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU (for LHD)


    1. A0027PH

      Disconnect each connector.

    2. A0028LV

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

    3. A002AD4

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

    4. A0029GM

      Disengage the clamp.

    5. A002AO4

      Remove the 2 nuts.

    6. A00282K

      Disengage the clamp as shown in the illustration.

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

    8. A00287M

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

    9. A0028JY

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

    10. A002BR0

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

  13. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU (for RHD)


    1. A002AU2

      Disconnect each connector.

    2. A002C68

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

    3. A002CE0

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

    4. A0027MA

      Disengage the clamp.

    5. A00287QC01
      B003ZIE Bolt
      B003Z8F Nut

      Remove the 2 bolts and nut.

    6. A002B2V

      Disengage the clamp as shown in the illustration.

    7. A002CDA

      Disengage the claw and guide to disconnect the connector holder as shown in the illustration.

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

    9. A002A8P

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

    10. A0029I6

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

    11. A00282H

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

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


    1. Press the claw of the instrument panel junction block assembly as shown in the illustration to release the lock.

      A0029G1C01
      *A for LHD *B for RHD
      *1 Instrument Panel Junction Block Assembly *2 Main Body ECU (Multiplex Network Body ECU)

    2. With the instrument panel junction block assembly lock released, insert a screwdriver with its tip wrapped with protective tape horizontally between the main body ECU (multiplex network body ECU) and instrument panel junction block assembly.

      A0028NCC01
      *A for LHD *B for RHD
      *a Protective Tape - -

      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. 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.

      A002BBTC01
      *A for LHD *B for RHD

      Note

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