Kia Cadenza VG Owner's Manual Quiz
Engine Control System/Fuel System

Barometric Pressure Sensor (BPS) Description and Operation

In this manual: Engine Control System/Fuel System
General Information — 15Engine Mechanical System — 95Engine Electrical System — 54Emission Control System — 24Engine Control System/Fuel System — 115Automatic Transmission — 91Drive Shaft and Axle — 13Suspension System — 35Steering — 19Restraints — 46Brake System — 43Body (Interior and Exterior) — 51Body Electrical System — 245Heating, Ventilation, and Air Conditioning — 56
~1min read

Description

The Barometric Pressure Sensor (BPS) is a speed-density type sensor and is installed on the air cleaner assembly. It senses the absolute pressure of the air cleaner assembly and sends an analog signal proportional to the pressure to the ECM. Using this signal, the ECM calculates the intake air volume and engine speed. The BPS consists of a piezoelectric element and a hybrid IC that amplifies the element's output signal. The element is a silicon diaphragm type and uses the pressure-sensitive effect of a semiconductor variable resistor. Since 100% vacuum and intake manifold pressure are applied to both sides of the sensor respectively, the sensor can output an analog signal using the silicon change proportional to the pressure change.

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A quick Kia Cadenza VG Owner's Manual quiz: every answer comes with an explanation and a link to the manual page.