THROTTLE BODY CONSTRUCTION/OPERATION [MZR 2.0 DISI i-stop]


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Construction

•  The throttle body mainly consists of the throttle valve, TP sensor, and throttle valve actuator.
•  A low-energy consuming DC motor has been adopted for the throttle valve actuator to improve response performance.
•  To keep moisture from freezing inside the throttle body, and thus prevent the throttle valve from getting stuck, engine coolant is circulated through the throttle body.
•  To prevent the possible loss of PCM data and throttle body settings, the throttle body cannot be disassembled.

Operation

•  When the throttle valve actuator is not energized, the throttle valve is maintained slightly open due to force of the return spring.
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