ACIS Control Circuit [08/2013 - ]: Description
When the Intake Air Control Valve (IACV) opens and closes, the Acoustic Control Induction System (ACIS) control circuit causes the engine load intake efficiency to increase. When the engine is running at 2200 to 4300 RPM and the throttle valve opening angle is 30° or more, current flows through the ACIS control circuit and the intake air control valve closes. For all other situations, current does not flow through the ECM and the intake air control valve is open.
TEXT IN ILLUSTRATION
| *1 | Intake Manifold | *2 | Intake Air Control Valve (IACV) |
| *3 | IACV Close | *4 | Throttle Valve Opening Angle (°) |
| *5 | Engine Speed (RPM) | - | - |