An illuminated or blinking ETC warning light in a modern car indicates a malfunction in the electronic throttle control. Older cars have physical linkages between the throttle pedal and the throttle body. However, newer vehicles use an array of sensors and actuators, virtually eliminating the old cables and connections to control the throttle. The throttle body utilizes a flat butterfly valve to control the amount of air entering the combustion chamber. Meanwhile, the ECU reads data from the airflow
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