Low and Middle Load
High Load
Engine speed
Below 2,500rpm
Above 2,500rpm
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 2,500rpm, the swirl valve is closed. This swirl effect increases air flow rate.
Low and Middle Load | High Load | |
Engine speed | Below 2,500rpm | Above 2,500rpm |
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 variable swirl control actuator 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".
Disconnect the battery (-) terminal.
Disconnect the variable swirl actuator connector (A).
Remove the installation bolt (C) after removing the engine wiring harness part (B).
Remove the shaft link assembly (C) after removing the E-ring (A) and the washer (B).
Remove the variable swirl actuator.
Installation is the reverse order of removal.
Variable swirl actuator installation bolt:
9.8 ~ 11.8 Nm (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
Confirm normal operation of the actuator more than 3 times when the ignition switch OFF after full warm up (Engine Coolant Temperature > 70°C).
