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Home >> Toyota >> 2025 >> RAV4 Plug-In Hybrid XSE >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Main Body Ecu - Service Information (PHEV) >> Main Body Ecu >> Removal [06/2020 - 12/2021] >> Procedure

Removal [06/2020 - 12/2021]: Procedure

  1. PRECAUTION 
    WARNING:

    Be sure to read precaution thoroughly before servicing.

    GTY824211Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Refer to PRECAUTION [06/2020 - 10/2022]

    NOTE:
    • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.

      Refer to BEFORE DISCONNECTING BATTERY [06/2020 - 10/2022]

    • 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.
  2. REMOVE LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY 

    Refer to REMOVAL [06/2020 - 12/2021]

  3. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY 
    1. Detach the guide and wire harness clamp.
      GTY986519Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Wire Harness Clamp
      *b Guide
    2. Remove the nut, bolt and No. 3 instrument panel to cowl brace sub-assembly.
      GTY987185Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut
  4. REMOVE POWER DISTRIBUTION BOX ASSEMBLY WITH MAIN BODY ECU 
    1. w/ Outer Rear View Mirror Foot light:
      1. w/ TOYOTA Parking Assist-sensor System:

        Disconnect the 5 connectors.

        GTY986745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *A w/ TOYOTA Parking Assist-sensor System
      2. w/o TOYOTA Parking Assist-sensor System:

        Disconnect the 4 connectors.

      3. Detach the wire harness clamp.
    2. w/o Outer Rear View Mirror Foot light:
      1. w/ TOYOTA Parking Assist-sensor System:
        GTY986060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *A w/ TOYOTA Parking Assist-sensor System

        Disconnect the 4 connectors.

      2. w/o TOYOTA Parking Assist-sensor System:

        Disconnect the 3 connectors.

      3. Detach the wire harness clamp.
    3. Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw and disconnect the 2 lever connectors.
      GTY986824Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lever Connector
      Rotate in this Direction
      Protective Tape
    4. Detach the wire harness clamp.
    5. Disconnect the 3 connectors.
    6. Disconnect the 5 connectors.
      GTY986677Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Remove the 2 nuts.
      GTY986678Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Detach the claw and disconnect the power distribution box assembly with main body ECU.
    9. Detach the claw and remove the power distribution box assembly with main body ECU from the connector holder.
      GTY986854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw and disconnect the 2 lever connectors.
      GTY986268Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lever Connector - -
      Rotate in this Direction Protective Tape
    11. Disconnect the connector.
    12. Detach the wire harness clamp and remove the power distribution box assembly with main body ECU.
  5. REMOVE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    1. Detach the claw and remove the junction block bracket from the power distribution box assembly with main body ECU.
      GTY985931Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Press the lock of the power distribution box assembly and release the lock of the main body ECU (multiplex network body ECU) as shown in the illustration.
      GTY986266Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Power Distribution Box Assembly *b Main Body ECU (Multiplex Network Body ECU)
      Movement Direction Power Distribution Box Assembly Lock
    3. 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 power distribution box assembly.
      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.).

      GTY986652Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Horizontally Insert a Thin-bladed Screwdriver Protective Tape
    4. When the thin-bladed screwdriver with its tip wrapped with protective tape is inserted, the internal connector lock is released.
      GTY986001Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Internal Connector
      Insert a Thin-bladed Screwdriver in this Direction
      Released in this Direction
      Protective Tape
      NOTE:
      • Do not twist the screwdriver to raise the main body ECU (multiplex network body ECU).
      • Do not excessively insert the screwdriver. Otherwise, the internal connector terminals may become deformed or damaged.
      • Replace the power distribution box assembly when the connector terminal, the locking section, or the case is damaged or deformed.
    5. Hold the rib of the main body ECU (multiplex network body ECU).
      GTY986252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. While rotating the main body ECU (multiplex network body ECU), completely release the lock.
      GTY987221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Rotate in this Direction
    7. Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
      GTY986495Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Remove in this Direction
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