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
Replaced Part or Performed Procedure Necessary procedures Effect/Inoperative Function when Necessary Procedure not Performed Link
Replacement of main body ECU (multiplex network body ECU) Perform code registration

  • Wireless door lock control system

  • Entry and start system

  • Engine start

 See Service Bulletin for the registration method.

PROCEDURE


  1. PRECAUTION

    Note


    • 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.

    Tech Tips


    • Use the same procedure for RHD and LHD vehicles.

    • The procedure listed below is for LHD vehicles.

  2. REMOVE LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY

    Click here

  3. REMOVE NO. 1 AIR DUCT SUB-ASSEMBLY

    Click here

  4. REMOVE NO. 1 HEATER TO REGISTER DUCT

    Click here

  5. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY

    Click here

  6. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU


    1. B006F3J

      Remove the 2 nuts and disconnect the ECU.

      Note

      If the removed nut is the same shape as that shown in the illustration, replace it the supplied replacement part.

      B006G7H
    2. B0069RQ

      Remove the 2 nuts and disconnect the instrument panel junction block assembly with main body ECU.

      Note

      If the removed nut is the same shape as that shown in the illustration, replace it the supplied replacement part.

      B006G7H

    3. Disconnect the 5 connectors.

      B0069NGC01
      *a Lever Connector - -
      B006DHE Rotate in this Direction B006GBM Protective Tape

    4. Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw and disconnect the 2 lever connectors.

    5. Detach the clamp.

      B006ENFC01
      *a Lever Connector - -
      B006DHE Rotate in this Direction B006GBM Protective Tape

    6. Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw, disconnect the 2 lever connectors and remove the instrument panel junction block with main body ECU assembly.

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


    1. B006AML

      Remove the nut.

      Note

      If the removed nut is the same shape as that shown in the illustration, replace it the supplied replacement part.

      B006G7H

    2. Detach the claw and remove the wiring harness clamp bracket.

    3. 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.

      B006CRRC01
      *a Instrument Panel Junction Block Assembly *b Main Body ECU (Multiplex Network Body ECU)
      B006DHE Movement Direction B006GBM Instrument Panel Junction Block Assembly Lock
    4. B006EQEC01
      *a Internal Connector
      B006GBM Near Internal Connector

      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 (near the internal connector).

      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.).

      B006DRYC01
      B006DHE Horizontally Insert a Thin-bladed Screwdriver B006GBM Protective Tape
    5. B006DUWC01
      B006DHE Insert a Thin-bladed Screwdriver in this Direction
      B006B42 Released in this Direction
      B006GBM Protective Tape

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

      Note

      Replace the instrument panel junction block assembly when the connector terminal, the locking section, or the case is damaged or deformed.

    6. B006DLS

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

    7. B006FU0C01
      B006DHE Rotate in this Direction

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

    8. B006CSIC01
      B006DHE Remove in this Direction

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