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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Hybrid Transaxle System (L310) - Service Information (2 Of 2)) >> Shift Control Ecu >> Removal [09/2018 - 10/2020] >> Procedure

Removal [09/2018 - 10/2020]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. REMOVE LUGGAGE COMPARTMENT MAT SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 24

  2. REMOVE TOOL BOX 

    Refer to PROCEDURE - Step 2

  3. PRECAUTION 
    WARNING:

    Be sure to read precaution thoroughly before servicing.

    GTY824211Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Refer to PRECAUTION [10/2017 - 10/2020]

    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.

    Refer to PRECAUTION [10/2017 - 09/2019] , or refer to PRECAUTION [09/2019 - 10/2020]

  4. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 
    NOTE:

    It is necessary to remove the shift control ECU while no power is being supplied from the sub-battery. Therefore, perform the following procedures.

    1. Turn the power switch off.
    2. Check that the ODO meter display has turned off.

      HINT: 

      The ODO meter continues to display for 30 seconds after turning off. Therefore, allow sufficient time for the shift control ECU to enter sleep mode and for the sub-battery power supply to end. In addition to monitoring the sub-battery voltage directly, the only other method for checking on the vehicle is to use the ODO meter display.

    3. Check that the voltage between the terminals of the sub-battery assembly with control is 0 V.

      Refer to REMOVAL [09/2018 - 10/2020]

      GTY816277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disconnect the cable from the negative (-) auxiliary battery terminal.
      NOTE:

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

      Refer to INITIALIZATION [09/2018 - 10/2020]

  5. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY 

    Refer to PROCEDURE - Step 30

  6. REMOVE NO. 2 AIR DUCT SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 57

  7. REMOVE SHIFT CONTROL ECU 
    1. Disconnect the 3 shift control ECU connectors.
      GTY799322Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 bolts and shift control ECU.
      GTY799320Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE NO. 1 SHIFT CONTROL ECU BRACKET 
    1. Remove the bolt and No. 1 shift control ECU bracket from the shift control ECU.
      GTY832557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE NO. 2 SHIFT CONTROL ECU BRACKET 
    1. Remove the bolt and No. 2 shift control ECU bracket from the shift control ECU.
      GTY799321Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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