An litup or blinking ETC caution light in a modern-day automobile suggests a breakdown in the electronic throttle control. Older vehicles have physical linkages inbetween the throttle pedal and the throttle body. However, morerecent cars usage an variety of sensingunits and actuators, practically removing the old cabletelevisions and connections to control the throttle.
The throttle body uses a flat butterfly valve to control the quantity of air gettingin the combustion chamber. Meanwhile, the ECU checksout information from the airflow sensingunit and throttle position sensingunit (TPS) to supply the matching quantity of fuel to make the vehicle run. A modern-day ETC system consistsof a customized gas pedal with sensingunits, a throttle body, and a circuitry harness.
The ETC caution light might be activated by any of the 3, and it’s why seeing a red or yellow “lightning” indication (or an ETC caution light) implies to stop driving and have the concern identified by a scan tool or expert mechanic.
What triggers the ETC caution light to come on?
If you see an litup or flashing lightning sign (red or yellow) in your carsandtruck, the ETC