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Home >> Lexus >> 2021 >> NX 300 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Control System - Service Information >> ECM >> Removal [10/2014 - 05/2019] >> Procedure

Removal [10/2014 - 05/2019]: Procedure

  1. PRECAUTION 
    NOTE:

    After turning the engine 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.

    Refer to PRECAUTION [10/2014 - 09/2017] , or refer to PRECAUTION [09/2017 - 05/2019]

  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 [10/2014 - 09/2017] , or refer to INITIALIZATION [09/2017 - 05/2019]

  3. DISCONNECT CABLE FROM POSITIVE BATTERY TERMINAL 
  4. REMOVE BATTERY CLAMP SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 4

  5. REMOVE BATTERY INSULATOR 

    Refer to PROCEDURE - Step 5

  6. REMOVE BATTERY 

    Refer to PROCEDURE - Step 6

  7. REMOVE AIR CLEANER CAP SUB-ASSEMBLY 
    1. Disconnect the intake mass air flow meter sub-assembly connector.
      GTY519531Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Detach the wire harness clamp to disconnect the wire harness from the air cleaner cap sub-assembly.
    3. Detach the 2 clips, loosen the hose clamp and remove the air cleaner cap sub-assembly.
  8. REMOVE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY 
    1. Remove the air cleaner filter element sub-assembly.
  9. REMOVE AIR CLEANER CASE SUB-ASSEMBLY 
    1. Detach the 3 wire harness clamps to disconnect the wire harness from the air cleaner case sub-assembly.
      GTY506753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 bolts and air cleaner case sub-assembly.
      GTY506758Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. REMOVE ECM 
    1. Disengage the lock, pull down the lever and disconnect the 2 connectors from the ECM.
      GTY516648Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Push
      *b Lock
      NOTE:

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

    2. Remove the 3 bolts and ECM.
      GTY506757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Replace with a new part if it is dropped or if it receives a strong impact.

  11. REMOVE NO. 1 ECM BRACKET 
    1. Remove the 2 screws and No. 1 ECM bracket from the ECM.
      GTY506762Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE NO. 2 ECM BRACKET 
    1. Remove the 2 screws and No. 2 ECM bracket from the ECM.
      GTY506761Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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