Variable swirl control actuator consists of DC motor and motor position sensor(potentiometer) which detects the position of swirl valve.
As closing one intake port out of two at idle and below 3000RPM, swirl effect is taken on intake air. This swirl effect increases air flow rate.
However, because air flow rate is too high, swirl effect is neglectable thus, swirl valve is opened for efficiency of intake air.
To prevent swirl valve and shaft form being stuck by foreign metarial, and to learn max opening and closing position of swirl valve, it is fully opened and closed twice at turning engine OFF.
? Swirl
The air flow which indicates Intake air swirls with respect to the axis passing through the centre of piston with length-direction by intake port which is eccentric from the centre of combustion chamber.
P2017 is set when variable swirl valve position sensor output voltage above 4.9V is detected for more than 0.6 sec. This code is due to 1)open in signal circuit or ground circuit or 2)short to battery in power circuit or signal circuit.
Item
Detecting Condition
Possible Cause
DTC Strategy
? Voltage monitoring
? Variable swirl valve position sensor circuit
? Variable swirl valve position sensor component
Enable Conditions
? IG KEY "ON"
Threshold Value
? Output voltage above minimum value( above 4900mV )
Diagnostic Time
? 0.6 sec.
Fail Safe
Fuel Cut
NO
? Swirl valve opened at variable swirl control actuator failure
EGR Off
Fuel Limit
Check Lamp