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Removal [09/2017 - ]: Procedure

  1. PRECAUTION 
    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.

    Refer to PRECAUTION [10/2015 - ]

  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 

    Refer to PROCEDURE - Step 2

    NOTE:

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

    Refer to INITIALIZATION [09/2017 - ]

  3. REMOVE COOL AIR INTAKE DUCT SEAL 

    Refer to PROCEDURE - Step 1

  4. REMOVE ENGINE ROOM ECU COVER 
    NOTE:
    • Remove all water on and around the engine room ECU cover.
    • With the engine room ECU cover open, be careful to avoid contamination by foreign matter or by water from rain, etc.
    1. Remove the 3 bolts and engine room ECU cover.
      GTY615836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. DISENGAGE WIRE HARNESS 
    1. Push the lock and move the lock lever of connector (with lock) as shown in the illustration and disconnect the connector (A) (with lock) from the engine room ECU box.
      GTY514631Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 2 engine wire harness connectors (B).
    3. Using a screwdriver, disengage the claw.
      GTY515707Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disengage the guide and disconnect the connector holder from the engine room ECU box.
    5. Disconnect the 6 ECM connectors and separate the wire harness from the engine room ECU box.
      GTY515747Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      After disconnecting the ECM connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the ECM connectors.

    6. Disconnect the transmission control ECU assembly connector.
      GTY515708Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Disengage the wire harness clamp.
      GTY515709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Separate the wire harness from the engine room ECU box.
  6. REMOVE ECM 
    1. Remove the 2 nuts and ECM from the engine room ECU box.
      GTY515706Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • If the ECM has been struck or dropped, replace it.
      • Pull the engine control ECU straight out to remove it.
  7. REMOVE NO. 1 ECM BRACKET 
    1. Remove the 2 screws and No. 1 ECM bracket from the ECM.
      GTY417832Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE NO. 2 ECM BRACKET 
    1. Remove the 2 screws and No. 2 ECM bracket from the ECM.
      GTY404553Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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