DTC P0661 Intake Manifold Tuning Valve Control Circuit Low; DTC P0662 Intake Manifold Tuning Valve Control Circuit High: Description

Based on the engine speed and throttle opening angle information from the ECM, the acoustic control induction system controls the intake air control valve actuator. In order to change the effective length of the intake manifold, the air control valve actuator opens and closes the intake manifold's ACIS valve via the link. As a result, the low-to-medium speed range torque and high rpm range performance are improved.

Fig 1: Throttle Valve Opening Angle - System Diagram

DTC DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
P0661	Open in intake air control valve actuator circuit (2 trip detection logic)	Intake manifold Intake air control valve actuator Intake air control valve actuator circuit ECM
P0662	Motor operation circuit (ECM interior) detects overcurrent or overheat (2 trip detection logic)	Intake manifold Intake air control valve actuator Intake air control valve actuator circuit ECM