General Information

Engine Control

P2009 Intake Manifold Runner Control Circuit Low (Bank 1) - General Information

Component Location





General Description

Variable Charge Motion Actuator (VCMA) is used for an adjustment of automotive flap and it is operated with two position, open and close. It makes swirl among intake air to reduce emission under cold start condition. This is worm gear driver type which doesn't guarantee restoring to limp home position in the case of loss of current supply. (This doesn't have mechanical return force due to no return spring.)

DTC Description

If VCM commend signal circuit is open or short to ground, ECM determines that a fault exists and a DTC is stored.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data








Fig.1) Normal waveform of VCM actuator (OPEN)
Fig.2) Normal waveform of VCM actuator (Closed)