Position Sensor Dlc3 - Toyota RAV4 2009 Features Manual

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Dual VVT-i (Variable Valve Timing-intelligent) System
1) General
D The Dual VVT-i system is designed to control the intake and exhaust camshafts within a range of 50_
and 40_ respectively (of Crankshaft Angle) to provide valve timing optimally suited to the engine
condition. This improves torque in all the speed ranges as well as increasing fuel economy, and
reducing exhaust emissions.
Intake Camshaft Timing Oil Control Valve
Crankshaft
Position
Sensor
D Using the engine speed, intake air mass, throttle position and engine coolant temperature, the ECM
can calculate optimal valve timing for each driving condition and controls the camshaft timing oil
control valve. In addition, the ECM uses signals from the camshaft position sensor and the crankshaft
position sensor to detect the actual valve timing, thus providing feedback control to achieve the target
valve timing.
Crankshaft Position
Sensor
Mass Air Flow Meter
Throttle Position Sensor
Engine Coolant Temp. Sensor
Camshaft Position Sensors
Vehicle Speed Signal
RAV4 – NEW FEATURES
Exhaust Camshaft Timing Oil Control Valve
Intake Camshaft
Position Sensor
Target Valve Timing
Correction
Actual Valve Timing
Exhaust Camshaft
Position Sensor
Engine Coolant
Temperature
Sensor
ECM
Duty Cycle
Control
Feedback
ECM
D Mass Air Flow Meter
D Throttle Position
Sensor
10SEG67Y
Camshaft Timing
Oil Control Valves
221EG16