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Home >> Lexus >> 2021 >> LC 500 2D Convertible >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - Service Information (Convertible) >> Throttle Body >> Installation [07/2020 - ] >> Procedure
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Installation [07/2020 - ]: Procedure

  1. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY 
    1. Connect the No. 4 water by-pass hose and No. 5 water by-pass hose to the throttle body with motor assembly and slide the 2 clips to secure the hoses.
      GTY499664Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 4 Water By-pass Hose
      *2 No. 5 Water By-pass Hose
      *a Paint Mark
      *b Down
      *c Front

      HINT: 

      Make sure the direction of the clip is as shown in the illustration.

    2. Temporarily install a new gasket and the throttle body with motor assembly to the intake air surge tank assembly with the 2 stud bolts.
      GTY797269Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the throttle body with motor assembly has been struck or dropped, replace it.

    3. Using an E6 "TORX" socket wrench, tighten the 2 stud bolts.

      Torque: 5.0 N.m (51 kgf/cm, 44 in.lbf) 

    4. Install the gasket and throttle body with motor assembly with the 2 bolts and 2 nuts.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

    5. Connect the No. 5 water by-pass hose to the water inlet housing and slide the clip to secure the hose.
    6. Connect the No. 4 water by-pass hose to the front water by-pass joint and slide the clip to secure the hose.
    7. Connect the throttle body with motor assembly connector.
  2. INSTALL AIR CLEANER HOSE ASSEMBLY 
    1. Connect the air cleaner hose assembly to the throttle body with motor assembly.
    2. Tighten the 4 hose clamps.

      Torque: 4.0 N.m (41 kgf/cm, 35 in.lbf) 

  3. CONNECT NO. 2 PCV HOSE 
    1. Connect the No. 2 PCV hose the air cleaner hose assembly and slide the clip to secure the hose.
  4. CONNECT NO. 3 PCV HOSE 
    1. Connect the No. 3 PCV hose to the air cleaner hose assembly and slide the clip to secure the hose.
  5. ADD ENGINE COOLANT 

    Refer to PROCEDURE - Step 11

  6. INSPECT FOR COOLANT LEAK 

    Refer to PROCEDURE - Step 3

  7. INSTALL LOWER RADIATOR AIR DEFLECTOR 

    Refer to PROCEDURE - Step 3 [07/2020 - 05/2023] , or refer to PROCEDURE - Step 8 [05/2023 - ]

  8. INSTALL RADIATOR SUPPORT TO FRAME SEAL LH 

    Refer to PROCEDURE - Step 9 [07/2020 - 05/2023] , or refer to PROCEDURE - Step 9 [05/2023 - ]

  9. INSTALL RADIATOR SUPPORT TO FRAME SEAL RH 

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

  10. INSTALL V-BANK COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 147 [07/2020 - 05/2023] , or refer to PROCEDURE - Step 150 [05/2023 - ]