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.
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:
Inspection
1.
Check the signal waveform of the CMPS and CKPS using the GDS.
Specification: Refer to “Wave Form”
Removal
[Bank 1]
•
DON'T remove the camshaft position sensor while the engine is
running or right after engine is turned off. In this ca ...
Filter inspection
The climate control air filter should
be replaced according to the
Maintenance Schedule. If the vehicle
is operated in severely air-polluted
cities or on dusty rough roads for a
long period, it should be inspected
more frequently and replaced earlier.
When you replac ...