Possible Causes
Faulty Intake Air Control Valve Actuator (For Tumble Control Valve)
Intake Air Control Valve Actuator harness is open or shorted
Intake Air Control Valve Actuator circuit poor electrical connection
Faulty Intake manifold
Faulty Engine Control Module (ECM)
الأسباب المحتملة
Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
الأعراض المحتملة
Description
The Tumble Control Valve (TCV) is built into the intake manifold. The Intake Air Control Valve Actuator (For Tumble Control Valve) is composed of a position sensor and a DC motor. The DC motor opens and closes the tumble control valve in response to signals from the Engine Control Module (ECM). The position sensor detects the opening angle of the tumble control valve.
When the tumble control valve is closed, the intake air tumble flow intensifies, and negative pressure is generated between the tumble control valve and intake valve which atomizes the fuel. Combustion is enhanced and exhaust gas emissions are reduced at low temperatures.
When the ECM has requested a tumble control valve open operation but the actual tumble control valve opening angle is less than 35 deg. for 10 seconds, DTC P2006 is stored.
