THROTTLE BODY CONSTRUCTION/OPERATION[LF, L3]
id0113b3101600
Construction
• The throttle body mainly consists of the throttle valve, TP sensor, and throttle actuator.
• A low-energy consuming DC motor has been adopted for the throttle 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 actuator is not energized, the throttle valve is maintained slightly open due to force of the return spring.
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1
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Throttle body
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2
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TP sensor
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3
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Throttle actuator
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4
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Throttle valve
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