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Home >> Lexus >> 2021 >> LC 500 2D Convertible >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Automatic Transmission System - Service Information (Convertible) (1 Of 2) >> Shift Control Ecu >> Installation [07/2020 - 05/2023] >> Procedure
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Installation [07/2020 - 05/2023]: Procedure

  1. INSTALL NO. 2 SHIFT CONTROL ECU BRACKET 
    1. Install the No. 2 shift control ECU bracket to the shift control ECU with the bolt.

      Torque: 4.5 N.m (46 kgf/cm, 40 in.lbf) 

      NOTE:

      Do not deform the No. 2 shift control ECU bracket.

      GTY817050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Align the hole on the No. 2 shift control ECU bracket with the protrusion of the shift control ECU.
  2. INSTALL NO. 1 SHIFT CONTROL ECU BRACKET 
    1. Install the No. 1 shift control ECU bracket to the shift control ECU with the bolt.

      Torque: 4.5 N.m (46 kgf/cm, 40 in.lbf) 

      NOTE:

      Do not deform the No. 1 shift control ECU bracket.

      GTY823998Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Align the hole on the No. 1 shift control ECU bracket with the protrusion of the shift control ECU.
  3. INSTALL SHIFT CONTROL ECU 
    1. Install the shift control ECU with the 2 bolts.

      Torque: 7.5 N.m (76 kgf/cm, 66 in.lbf) 

      NOTE:

      Do not deform the No. 1 shift control ECU bracket and No. 2 shift control ECU bracket when installing the shift control ECU.

      GTY835690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Align the hole on the No. 2 shift control ECU bracket with the protrusion of the air conditioning unit.
    2. Connect the 3 shift control ECU connectors.
      GTY834728Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL NO. 2 AIR DUCT 

    Refer to PROCEDURE - Step 23

  5. INSTALL GLOVE COMPARTMENT DOOR ASSEMBLY 

    Refer to INSTALLATION [07/2020 - 10/2022] , or refer to INSTALLATION [10/2022 - 05/2023]

  6. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
    NOTE:

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

    Refer to INITIALIZATION [07/2020 - 05/2023]

  7. CHECK AND CLEAR DTC 

    Refer to DTC CHECK / CLEAR [07/2020 - ]

  8. INSTALL NO. 2 DECK BOARD 

    Refer to PROCEDURE - Step 13 [07/2020 - 10/2022] , or refer to PROCEDURE - Step 13 [10/2022 - 05/2023]

  9. CHECK SRS WARNING LIGHT 

    Refer to OPERATION CHECK [07/2020 - ]

  10. CONFIRMATION WORK AFTER REPLACING SHIFT CONTROL ECU 
    1. After replacing the shift control ECU, check for the following symptoms. If any of these symptoms exists, be sure to perform the following procedure starting from step b.
      • The P position switch blinks when the engine switch is turned on (IG) or the engine is started and the shift position is not in P.
      • The power source off automatic P function does not operate.
      • The shift position is not displayed on the meter until a shift change operation is performed.
    2. Turn the engine switch on (IG).
    3. Press the P position switch and change the shift position to P.
    4. Start the engine.
    5. Depress the brake pedal and operate the shift lever to change the shift position to D.
    6. Check that the P position switch does not blink when the engine switch is turned on (IG) or the engine is started, and the shift position is not in P.
      NOTE:

      If the P position switch is blinking, be sure to perform steps b. through e. again.

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