LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Scion >> 2012 >> tC Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Service Information) >> Throttle Body >> Installation >> Installation
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Throttle Body: Installation: Installation

  1. INSTALL THROTTLE WITH MOTOR BODY ASSEMBLY 
    1. Install a new gasket to the intake manifold.
    2. Install the throttle with motor body assembly with the 4 bolts.

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

    3. Connect the throttle position sensor and control motor connector.
    4. Fig 1: View Of Fuel Hose Bracket And Bolt
      GTY312748Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the fuel hose is detached from the clamp shown in the illustration, the clamp cannot be reused.

    5. Connect the fuel hose bracket with the bolt.

      Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf) 

      TEXT IN ILLUSTRATION

      *1 Clamp
    6. Connect the No. 2 water by-pass hose to the throttle body.
    7. Connect the No. 1 water by-pass hose to the throttle body.
  2. INSTALL AIR CLEANER CAP SUB-ASSEMBLY  See step  4
  3. ADD ENGINE COOLANT  . Refer to REPLACEMENT - Step 4
  4. INSPECT FOR COOLANT LEAK  . Refer to ON-VEHICLE INSPECTION - Step 1
  5. INSTALL ENGINE UNDER COVER 
    1. Install the under cover with the 6 bolts and 7 clips.
  6. PERFORM INITIALIZATION 
    NOTE:
    • Be sure to perform this procedure after reassembling the throttle body assembly or removing and reinstalling any throttle body component.
    • Perform the following procedure after replacing the ECM, throttle body assembly or any throttle body components. The following procedure should also be performed if the throttle body is cleaned.
    • Be sure to perform this procedure after reconnecting the battery cable or replacing the ECM.
    1. Disconnect the EFI NO. 1 and ETCS fuses at the same time. Wait at least 60 seconds and reconnect the fuses.
    2. Turn the ignition switch to ON without operating the accelerator pedal.
      NOTE:

      If the accelerator pedal is operated, perform the above steps again.

    3. Connect the Techstream to the DLC3 and clear the DTCs. Refer to DTC CHECK / CLEAR .
    4. 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 when the A/C is switched off.

      Standard

      Condition Engine Idle Speed
      A/C switched off 600 to 700 rpm
      NOTE:
      • Be sure to perform this step with all accessories off.
      • Make sure that the shift lever is in N or P.
    5. Enter the following menus: Powertrain / Engine and ETC / Data List / All Data / Throttle Sensor Position. Fully depress the accelerator pedal and check that the value is 60% or more.
    6. Perform a road test and confirm that there are no abnormalities.