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Home >> Lexus >> 2017 >> RX 350 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Control System - Service Information >> ECM >> Removal [08/2016 - 08/2019] >> Procedure

Removal [08/2016 - 08/2019]: Procedure

  1. PRECAUTION 
    NOTE:
    • Perform Vehicle Identification Number (VIN) registration when replacing the ECM.

      Refer to REGISTRATION [09/2015 - ]

    • Before replacing the ECM, refer to Registration.

      Refer to REGISTRATION [09/2015 - 08/2019]

    • If the ECM has been struck or dropped, replace it.
    • 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 [09/2015 - 12/2017] , or refer to PRECAUTION [12/2017 - 08/2019]

  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE:

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

    Refer to INITIALIZATION [08/2016 - 12/2017] , or refer to INITIALIZATION [12/2017 - 08/2019]

  3. REMOVE COOL AIR INTAKE DUCT SEAL 

    Refer to PROCEDURE - Step 1

  4. REMOVE ECM 
    1. Raise the 2 levers while pushing the locks on the levers, and disconnect the 2 ECM connectors.
      GTY662714Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Push
      *b Lock
      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.

    2. Disengage the wire harness clamp.
    3. Remove the 2 bolts and nut to remove the ECM.
      NOTE:

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

      GTY614233Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut
  5. REMOVE NO. 1 ECM BRACKET 
    1. Remove the 2 bolts and No. 1 ECM bracket from the ECM.
      GTY659072Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE NO. 2 ECM BRACKET 
    1. Remove the 2 bolts and No. 2 ECM bracket from the ECM.
      GTY659080Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002