Description And Operation: Description
Boost Pressure Sensor (BPS) is a speed-density type sensor and is installed on the air cleaner assembly. It senses absolute pressure of the air cleaner assembly and transfers the analog signal proportional to the pressure to the ECM. By using this signal, the ECM calculates the intake air quantity and engine speed.
The BPS consists of a piezo-electric element and a hybrid IC amplifying the element output signal. The element is a silicon diaphragm type adapting pressure sensitive variable resistor effect of semi-conductor. Because it is 100% vacuum and the turbocharger pressure applies to each side of the sensor, this sensor can output analog signal by using the silicon variation proportional to pressure change.