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Hyundai Azera: Barometric Pressure Sensor (BPS) Description and Operation - Engine Control System - Engine Control/Fuel System - Hyundai Azera 2011-2025 Service ManualHyundai Azera: 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 assemby. It senses absolute pressure of the air cleaner assemby 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 100% vacuum and the manifold pressure apply to both sides of the sensor respectively, this sensor can output analog signal by using the silicon variation proportional to pressure change.

ETC (Electronic Throttle Control) System Repair procedures
Inspection Throttle Position Sensor (TPS) 1. Connect the GDS on the Data Link Connector (DLC). 2. Start the engine and measure the output voltage of TPS 1 and 2 at C.T. and W.O.T. Throttle ...

Barometric Pressure Sensor (BPS) Specifications
Specification Pressure [kPa (kgf/cm?, psi)]Output Voltage (V)10.0 (0.01, 0.15)0.5055.0 (0.56, 7.98)2.21100.0 (1.01, 14.5)3.93115.0 (1.17, 16.9)4.50 ...

See also:

Steering gear box, linkage & boots/lower arm ball joint
With the vehicle stopped and engine off, check for excessive free-play in the steering wheel. Check the linkage for bends or damage. Check the dust boots and ball joints for deterioration, cracks, ...

Rail Pressure Sensor (RPS) Description and Operation
Description Rail Pressure Sensor (RPS) is installed on the delivery pipe and measures the instantaneous fuel pressure in the delivery pipe. The sensing element (Semiconductor element) built in ...

Checking the brake fluid level
Check the fluid level in the reservoir periodically. The fluid level should be between MAX (Maximum) and MIN (Minimum) marks on the side of the reservoir. Before removing the reservoir cap and addin ...

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