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Home >> Lexus >> 2021 >> UX 200 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (M20A-FKS) (Service Information) >> Throttle Body >> Installation [10/2018 - 07/2022] >> Procedure
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Installation [10/2018 - 07/2022]: Procedure

  1. INSTALL THROTTLE BODY GASKET 
    1. Install a new throttle body gasket to the intake manifold with the protrusion of the throttle body gasket oriented as shown in the illustration.
      GTY783204Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protrusion
  2. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY 

    HINT: 

    Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

    Refer to INITIALIZATION [10/2018 - 08/2021] Refer to INITIALIZATION [08/2021 - 07/2022]

    1. Connect the No. 5 water by-pass hose to the throttle body with motor assembly and slide the clip to secure it.
      NOTE:
      • If the throttle body with motor assembly has been struck or dropped, replace it.
      • Make sure to position the clip as shown in the illustration.
      GTY779635Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Top of Vehicle
      *b Left of Vehicle
      *c 45°(Claw of Clip Location)
      *d Paint Mark
    2. Using an 8 mm socket wrench, install the throttle body with motor assembly to the intake manifold with the 3 bolts.
      GTY796738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Top of Vehicle
      *b Left of Vehicle
      *c 45°(Claw of Clip Location)
      *d Paint Mark

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

    3. Connect the No. 8 water by-pass hose to the throttle body with motor assembly and slide the clip to secure it.
      NOTE:

      Make sure to position the clip as shown in the illustration.

    4. Connect the throttle body with motor assembly connector.
  3. INSTALL AIR CLEANER CAP WITH AIR CLEANER HOSE 
    1. Install the air cleaner cap with air cleaner hose to the throttle body with motor assembly and tighten the hose clamp.

      Torque: 2.0 N*m (20 kgf*cm, 18 in.*lbf) 

      NOTE:

      Align the cutout of the air cleaner hose with the protrusion of the throttle body with motor assembly as shown in the illustration.

      GTY824528Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Ventilation Hose
      *2 Hose Clip
      *3 Hose Clamp
      *a Protrusion
      *b Cutout
      *c Top of Vehicle
      *d Front of Vehicle
      *e 45°(Claw of Clip Location)
    2. Connect the No. 2 ventilation hose to the cylinder head cover sub-assembly and slide the hose clip to secure it.
      NOTE:

      Make sure to position the clip as shown in the illustration.

    3. Engage the guide to connect the vacuum switching valve assembly.
    4. Engage the 2 guides and 2 clamps.
    5. Engage the wire harness clamp and connect the mass air flow meter connector.
  4. ADD ENGINE COOLANT 

    Refer to PROCEDURE - Step 3 Refer to PROCEDURE - Step 3

  5. INSPECT FOR COOLANT LEAK 

    Refer to PROCEDURE - Step 1 Refer to PROCEDURE - Step 1

  6. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 41 Refer to PROCEDURE - Step 41

  7. INSTALL REAR ENGINE UNDER COVER LH 

    Refer to PROCEDURE - Step 5 Refer to PROCEDURE - Step 5

  8. PERFORM INITIALIZATION 
    NOTE:
    • Be sure to perform this procedure after removing and reinstalling the throttle body with motor assembly or any throttle body with motor assembly components.
    • Perform the following procedure after replacing the throttle body with motor assembly or any throttle body with motor assembly components. The following procedure should also be performed if the throttle body with motor assembly is cleaned.
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    5. Perform "Inspection After Repair".

      Refer to INITIALIZATION [10/2018 - 08/2021] Refer to INITIALIZATION [08/2021 - 07/2022]

    6. Start the engine and check that the MIL is not illuminated. After the engine is warmed up, check that the idle speed is within the specified range with the A/C switch off.

      Standard Idle Speed 

      750 to 850 rpm

      NOTE:
      • Be sure to perform this step with all accessories off.
      • Make sure that the shift lever is in P or N.
    7. Enter the following menus: Powertrain / Engine / Data List / Throttle Position Sensor No. 1 Voltage %.

      Powertrain > Engine > Data List 

      Tester Display
      Throttle Position Sensor No. 1 Voltage %
    8. According to the display on the Techstream, read the Data List while fully depressing the accelerator pedal and check that the value is 60% or higher.
    9. Perform a road test and confirm that there are no abnormalities.