MAIN BODY ECU(for LHD) REMOVAL

CAUTION / NOTICE / HINT

PROCEDURE


  1. REMOVE UPPER RADIATOR SUPPORT SEAL

    Click here

  2. PRECAUTION

    Note

    After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Click here.

  3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL (w/o Door Control Battery)

    CAUTION:

    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    Note

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

  4. DISCHARGE DOOR CONTROL BATTERY AND DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL (w/ Door Control Battery)

    CAUTION:

    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    Note


    • Make sure to perform this procedure with the power supply of the battery and door control battery cut to prevent damage during removal and installation of the instrument panel junction block assembly.

    • Make sure to perform the following procedures, and then perform removal and installation of the instrument panel junction block assembly with the power supply from the battery and door control battery cut.

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

    Tech Tips


    • When the ignition switch is turned off after the door control battery is fully charged, the door control battery becomes completely discharged due to self-discharge within approximately 30 minutes.

    • Approximately 90 seconds after the ignition switch is turned on (IG), the door control battery becomes fully charged.

    • When approximately 30 minutes or more elapse after the ignition switch is turned off, the Active Test may not be able to be performed.


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the GTS on.

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

      Note

      Do not perform the Active Test at this time.

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

    6. Repeat the "Shock Detection Unlock" Active Test until the multiplex network body ECU (main body ECU) communication lost error "Lost communication with vehicle" appears on the GTS display.

      Note


      • When the door control battery becomes completely discharged and the power supply is cut, the multiplex network body ECU (main body ECU) communication lost error "Lost communication with vehicle" appears on the GTS display.

      • The number of times the Active Test can be performed depends on the charge condition of the door control battery.

  5. REMOVE INSTRUMENT SIDE PANEL LH

    Click here

  6. REMOVE NO. 1 SWITCH HOLE BASE

    Click here

  7. REMOVE LOWER INSTRUMENT PANEL PAD SUB-ASSEMBLY LH

    Click here

  8. REMOVE NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY

    Click here

  9. REMOVE INNER NO. 1 INSTRUMENT PANEL BRACKET COVER LH

    Click here

  10. REMOVE LOWER NO. 1 INSTRUMENT PANEL FINISH PANEL

    Click here

  11. REMOVE DRIVER SIDE KNEE AIRBAG ASSEMBLY

    Click here

  12. REMOVE COWL SIDE JUNCTION BLOCK LH


    1. B00189F

      Disconnect each connector.

      Text in Illustration
      B0018FC Connector
      B001A0Q Connector with Lock Lever
      B0019VB Protective Tape

    2. Disconnect the connector with lock lever.

      Tech Tips

      Use the same procedure to disconnect the connector with lock lever on the other side.


      1. Using a screwdriver, insert the lock lever to detach the claw.

        Tech Tips

        Tape the screwdriver tip before use.

      2. Tilt the lock lever and disconnect the connector.

    3. B0019JK

      Remove the bolt and 2 nuts and cowl side junction block LH.

    4. B0019IT

      Disconnect the connector with lock lever.


      1. Using a screwdriver, insert the lock lever to detach the claw.

        Tech Tips

        Tape the screwdriver tip before use.

        Text in Illustration
        B0019VB Protective Tape

      2. Tilt the lock lever and disconnect the connector.

    5. B0019RI

      Detach the claw and slide the connector lock.

    6. B00193W

      Disconnect the connector with lock lever.


      1. Using a screwdriver, insert the lock lever to detach the claw.

        Tech Tips

        Tape the screwdriver tip before use.

        Text in Illustration
        B0019VB Protective Tape

      2. Tilt the lock lever and disconnect the connector.

  13. REMOVE STEERING CONTROL ECU

    Click here

  14. REMOVE JUNCTION BLOCK BRACKET


    1. B00189S

      Remove the bolt.

    2. Detach the guide and remove the junction block bracket.

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

    Note


    • If the main body ECU (multiplex network body ECU) is replaced, replace it with a new one.

    • If the main body ECU (multiplex network body ECU) is replaced, refer to service bulletin.


    1. B0018HLE04
      Text in Illustration
      *a Claw of Cowl Side Junction Block LH
      *b Main Body ECU (Multiplex Network Body ECU)

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

    2. B0018RU

      With the cowl side junction block LH lock released, insert a screwdriver with its tip wrapped with protective tape horizontally between the main body ECU (multiplex network body ECU) and cowl side junction block LH.

      Text in Illustration
      B0019VB Protective Tape

      Note

      Use a screwdriver with a diameter of between 5.0 mm (0.197 in.) and 6.3 mm (0.248 in.) and a length of approximately 90 mm (3.54 in.).

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

      Note

      Do not insert the screwdriver between the cowl side junction block LH and the connector of the main body ECU (multiplex network body ECU).

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

    4. B001B0S

      Raise the main body ECU (multiplex network body ECU) as shown by the black arrow, and then slide it out as shown by the white arrow in the illustration.

      Text in Illustration
      B0018FC Raise
      B00199O Slide Out

      Note

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