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Home >> Lexus >> 2021 >> ES 300h Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (A25A-FXS) - Service Information >> ECM >> Removal [06/2018 - 08/2020] >> Procedure
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Removal [06/2018 - 08/2020]: Procedure

  1. PRECAUTION 
    NOTE:

    After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

  2. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 

    Refer to PROCEDURE - Step 1

  3. REMOVE ECM 
    1. Rotate the 2 levers while pushing the locks, and disconnect the 2 ECM connectors.
      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.

      GTY762840Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt and separate the engine wire from the No. 2 ECM bracket.
    3. Disengage the clamp.
    4. Remove the 2 nuts and ECM.
      GTY762835Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the ECM has been struck or dropped, replace it.

  4. REMOVE NO. 1 ECM BRACKET 
    1. Remove the 2 screws and No. 1 ECM bracket from the ECM.
      GTY762834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE NO. 2 ECM BRACKET 
    1. Remove the 2 screws and No. 2 ECM bracket from the ECM.
      GTY762833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002