Low and Middle Load
High Load
Engine speed
Below 3000rpm
Above 3000rpm
Valve operation
CLOSE
OPEN
Description
illustration
Fail-safe
Fully opened
Variable Swirl Control Actuator consists of DC motor and position sensor which detects the position of the swirl valve.
At idle or below 3000rpm, the swirl valve is closed. This swirl effect increases air flow rate.
Low and Middle Load | High Load | |
Engine speed | Below 3000rpm | Above 3000rpm |
Valve operation | CLOSE | OPEN |
Description illustration | | |
Fail-safe | Fully opened | |
To prevent the swirl valve and the shaft from being stuck by foreign material and to learn max opening and closing position of the valve, the ECM fully opens and closes the valve twice when engine is being stopped.
Turn ignition switch OFF.
Disconnect the electric EGR control valve connector.
Check that swirl valve is stuck by foreign material.
Measure resistance between motor (+) and (-) control terminals.
Specification: Refer to "SPECIFICATION".
Measure resistance between voltage supply terminal and ground terminal of position sensor.
Specification: Refer to "SPECIFICATION".
After replacing a Variable Swirl Actuator, MUST proceed below procedure.
Turn ignition switch OFF.
Connect a scan tool to Data Link Connector (DLC).
Turn ignition switch ON.
Select "ENGINE CONTROL".
Select "MANUAL SELECTION MODE".
Select "D 2.0L VGT DIESEL".
Select "COMPONET CHANGE ROUTNE"
Select "SWIRL CONTROL VALVE CHANGE".
Press "ENTER" key.
Wait 10 seconds with IG ON.
Turn ignition switch off.
Disconnect the battery (-) terminal.
Mark painting on the top (A) of the variable swirl actuator coupling of the intake manifold side.
Disconnect the variable swirl actuator connector (A).
Remove the variable swirl actuator (C) after removing the installation bolt (B).
Installation is the reverse order of removal.
Variable swirl actuator installation bolt:
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
If the coupling of the intake manifold side is rotated a 180-degree turn, a real gap between the port and the flap in the intake manifold may be different from measuring it.
Install the actuator after confirming the mark on the top of the coupling.
Confirm normal operation of the actuator more than 3 times when the ignition switch OFF after full warm up (Engine Coolant Temperature > 70 °C).
