Hyundai Genesis: Engine Control System / Barometric Pressure Sensor (BPS) Description and Operation
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.
![](images/barometric_pressure_sensor_bps_description_and_operation-208/1/scmf20002l.gif)
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.
1.
Connect the GDS to the Data ...
Specification
Pressure (kPa)Output Voltage (V)10.00.5055.02.21100.03.93115.04.50
...
Other information:
CAUTION
Do not use the interior lights for
extended periods when the
engine is turned off or the battery
will discharge.
WARNING
Do not use the interior lights
when driving in the dark.The interior
lights may obscure your view
and cause an accident.
Interior lamp AUTO cut
The interi ...
In the OFF position, pull the lever
gently toward you to spray washer
fluid on the windshield and to run the
wipers 1-3 cycles. The spray and
wiper operation will continue until you
release the lever. If the washer does
not work, you may need to add washer
fluid to the washer fluid r ...