Hyundai Genesis: Engine Control System / Accelerator Position Sensor (APS) Description and Operation
Accelerator Position Sensor (APS) is installed on the
accelerator pedal module and detects the rotation angle of the
accelerator pedal. The APS is one of the most important sensors in
engine control system, so it consists of the two sensors which adapt
individual sensor power and ground line. The second sensor monitors the
first sensor and its output voltage is half of the first one. If the
ratio of the sensor 1 to 2 is out of the range (approximately 1/2), the
diagnostic system judges that it is abnormal.

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the OPS connector.
3.
Remove the OPS (Refer to "Removal").
4.
After immersing the thermistor of the sensor into engine coolant ...
Specification
AcceleratorPositionOutput Voltage (V)APS1APS2C.T0.7 ~ 0.80.33 ~ 0.43W.O.T3.85 ~ 4.351.93 ~ 2.18
...
Other information:
The power outlet is designed to provide
power for mobile telephones or
other devices designed to operate
with vehicle electrical systems. The
devices should draw less than 180
W(Watt) with the engine running.
To open the cover, press the cover
and it will slowly open. To close the
c ...
Removal
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the Engine room fuse & relay box (B) after removing the cover (A).
3.
Disconnect the brake tubes (A) from the HECU by unlocking the nuts counterclockwise with a wrench.
Tightening torque : ...