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:
Replacement
•
Put on gloves to prevent hand injuries.
•
When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components.
•
When removing the interior trim pieces, use a ...
Inspection
[Measuring Resistance]
1.
Disconnect the cruise control switch connector from the control switch.
2.
Measure resistance between terminals on the control switch when each function switch is ON (switch is depressed).
Function switchTerminalResistance (k?)SET -5 - 60.31 ~ 0.35 ...