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Swirl Control Valve (Pickup 2.4L & 240SX): Actuator

Disconnect vacuum hose from actuator, located near flywheel end of intake manifold. Apply and release vacuum at actuator diaphragm. Replace actuator if rod does not move.

NOTE: On some swirl control valve solenoids, port "C" may be a vent that is capped with a filter. Also, if solenoid does not respond as specified, perform test again, considering port "A" as port "B" and vice versa.
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