P2009 is set when 1) short to ground in variable swirl actuator driving motor (+) or (-) output terminal. or 2) tiny open in motor (-) output terminal for a long period occurs. The polarity of (+) and (-) lines shift each other in accordance with the condition of swirl valve(opened or closed) thus, checking both (+) and (-) circuits is required.
If motor (+) or (-) is completely open, DTC P2009 (Open) and P2015 (Stuck) are retrieved together.
But, in case of intermittent open, DTC P2015 (stuck) is first. In this condition, if the circuit which is intermittent open is back to normal condition before power off, DTC P2009 (Open) is not retrieved.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Voltage monitoring | 1. Variable swirl valve motor circuit | ||
Enable Conditions |
•
IG key ON | |||
Threshold Value |
•
Short to ground in VSCA motor (+) circuit.
•
Short to ground in VSCA motor (-) circuit.
•
Tiny open in VSCA motor (-) circuit for a long period occurs. | |||
Diagnostic Time |
•
1 sec. | |||
Fail Safe | Fuel cut | NO |
•
Swirl valve opened at variable swirl control actuator failure. | |
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | OFF | |||
