Celica ST Liftback L4-2164cc 2.2L DOHC (5S-FE) MFI (1998)
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Throttle Position Sensor: Description and Operation
DESCRIPTION
The throttle position sensor is mounted in the throttle body and detects the throttle valve opening angle.
When the throttle valve is fully closed, voltage is applied to terminal VTA of the ECM.
The voltage applied to the terminals VTA of the ECM increases in proportion to the opening angle of the throttle valve stops a set voltage, when the
throttle valve is fully opened.
The ECM judges the vehicle driving conditions from this signal input from terminal VTA, and uses it as one of the conditions for deciding the air-fuel
ratio correction, power increases, corrections, and fuel out control etc.
