Hyundai Genesis (DH): Engine Control System / Barometric Pressure Sensor (BPS) Description and Operation

Hyundai Genesis (DH) 2013-2016 Service Manual / Engine Control / Fuel System / Engine Control System / Barometric Pressure Sensor (BPS) Description and Operation

Description
Barometric 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 silicon diaphragm type and adapts pressure sensitive variable resistor effect of semi-conductor. Because one side of the silicon diaphragm is 100% vacuum and the other is affected by the manifold pressure, this sensor can output analog signal by using the silicon variation proportional to pressure change.

    Inspection If idle rpm is unstable or engine stops, check the ETC module operation with GDS diagnostic tool. And if necessary, clean carbon in the throttle body.

    Specification Pressure (kPa)Output Voltage (V)10.00.5055.02.21100.03.93115.04.50

    Other information:

    Hyundai Genesis (DH) 2013-2016 Service Manual: General Safety Information and Caution

    Instructions When Handling Refrigerant 1. R-134a liquid refrigerant is highly volatile. A drop on the skin of your hand could result in localized frostbite. When handling the refrigerant, be sure to wear gloves. 2. It is standard practice to wear goggles or glasses to protect your eyes, and gloves to protect your hands.

    Hyundai Genesis (DH) 2013-2016 Service Manual: Compressor oil Repair procedures

    Oil Specification 1. The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed. 2. Compressor (PAG) oil varies according to compressor model. Be sure to use oil specified for the compressor model.

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