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".
