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Throttle Body: Installation

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  1. To install, reverse removal procedure using NEW gasket. Ensure gasket for throttle body is installed with protrusion facing proper direction. See Fig 1 and Fig 2 .
  2. Tighten throttle body bolts/nuts to specification. See TORQUE SPECIFICATIONS . On Celica, fill and bleed cooling system. See COOLING SYSTEM BLEEDING  under COOLING SYSTEM. On Corolla, fill cooling system.
    Fig 1: Installing Gasket For Throttle Body (Celica)
    G00014886Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Installing Gasket For Throttle Body (Corolla)
    G98C10282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002


  1. To install, reverse removal procedure using NEW gasket. If installing TP sensor, ensure throttle valve on throttle body is fully closed. Position TP sensor at 45 degrees to so it aligns with shaft on throttle valve and install on throttle body. See Figure. Rotate TP sensor to the right 45 degress and install and tighten retaining screws.
  2. Ensure gasket for throttle body is installed so protrusion aligns with groove on intake manifold. See Figure. Tighten throttle body bolts to specification. See TORQUE SPECIFICATIONS . Fill cooling system.


  1. To install, reverse removal procedure using NEW gaskets. Ensure gaskets for throttle body are installed in proper sequence, as 2 gaskets are used and that protrusion on the one gasket is properly positioned. See Figure.
  2. Tighten throttle body bolts/nuts, throttle body support bracket bolts and suspension upper brace bolts/nuts to specification. See TORQUE SPECIFICATIONS . Fill and bleed cooling system. See COOLING SYSTEM BLEEDING  under COOLING SYSTEM.


To install, reverse removal procedure using NEW gasket. Tighten throttle body bolts/nuts to specification. See TORQUE SPECIFICATIONS . Fill and bleed cooling system. See COOLING SYSTEM BLEEDING  under COOLING SYSTEM.

Fig 1: Locating Throttle Position Sensor & Throttle Control Motor (Prius)
G00015544Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Installing Throttle Position Sensor (Prius)
G00015548Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Locating Data Link Connector No. 3 (Prius)
G00016681Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002