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INTAKE VALVE TIMING CONTROL EC-633 < FUNCTION DIAGNOSIS > [QR25DE EXCEPT FOR CALIFORNIA] C D E F G H I J K L M A EC N P O INTAKE VALVE TIMING CONTROL System Diagram INFOID:0000000004349629 System Description INFOID:0000000004349630 INPUT/OUTPUT SIGNAL CHART *: This signal is sent to the ECM through CAN communication line SYSTEM DESCRIPTION This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve. The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control sole- noid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range. JMBIA0060GB Sensor Input signal to ECM ECM function Actuator Crankshaft position sensor (POS) Engine speed and piston position Intake valve Intake valve timing control Camshaft position sensor (PHASE) Engine coolant temperature sensor Engine coolant temperature Combination meter Vehicle speed* |