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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Hybrid Transaxle System (L310F) - Service Information (3 Of 3) >> Shift Control Ecu >> Removal [10/2023 - ] >> Procedure

Removal [10/2023 - ]: Procedure

  1. REMOVE LUGGAGE COMPARTMENT MAT SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 25

  2. REMOVE TOOL BOX 

    Refer to PROCEDURE - Step 3

  3. PRECAUTION 
    WARNING:

    Be sure to read precaution thoroughly before servicing.

    GTY824211Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Refer to PRECAUTION [10/2023 - ]

    NOTE:

    After turning the power switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

    Refer to BEFORE DISCONNECTING BATTERY [10/2023 - ]

  4. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 
    NOTE:
    • w/ Front LiDAR Sensor:

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

    • w/o Front LiDAR Sensor:

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

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

      HINT: 

      • w/ Front LiDAR Sensor:

        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 to end.

      • w/o Front LiDAR Sensor:

        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 integration control supply to end.

    3. Disconnect the cable from the negative (-) auxiliary battery terminal.
  5. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY 

    Refer to PROCEDURE - Step 32

  6. REMOVE NO. 2 AIR DUCT SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 56

  7. REMOVE SHIFT CONTROL ECU 
    NOTE:

    w/o Front LiDAR Sensor:

    When disconnecting a wire harness of any component connected to the supply power of the integrated capacitor (integration control supply) or when removing the integrated capacitor (integration control supply), make sure to wait 5 minutes or more after turning the ignition switch off for self-diagnosis to complete and the voltage of the integrated capacitor (integration control supply) to discharge.

    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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