•  The intake throttle valve actuator uses a DC continuous motor for throttle plate control. The intake throttle valve position sensor varies linearly and is directly proportional to the intake throttle valve angle. The PCM applies reference voltage and ground to the sensor and monitors the sensors ratiometric output voltage to determine precise intake throttle valve position.

•  In order to restrict the inlet air flow, the intake throttle valve is closed by a set percentage value depending on requirements. This produces a specific vacuum behind the intake throttle valve. This vacuum results in the recirculated exhaust gases being drawn in more efficiently by the engine via the EGR valve and therefore a higher EGR rate to be delivered to the cylinders.