Fig. 1) Signal waveform of variable swirl control actuator motor position sensor at the point of turning engine OFF.

Swirl valve is opened and closed three-time at engine OFF.

☞ ECM controls swirl valve to wide open and wide close position in order to learn swirl valve position at IG key OFF under the condition that engine coolant is over 70℃.

Fig. 2) Swirl valve is opened and closed three-time at engine OFF.