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 driver may choose to only use
the Cruise Control Mode (speed control
function) by doing as follows:
1.Turn the Smart Cruise Control
System on (the cruise indicator
light will be on but the system will
not be activated).
2.Push and hold the Vehicle-to-
Vehicle Distance button fo ...
Troubleshooting
1.
Part diagnosis
Items Cause Symptom RemedySwitch fuse Faulty fuse connection, Damaged fuse
-
DTC Code : P0504
-
Symptom : Shifting gear trouble, Starting failure, Cruise
control function cancelation trouble, EPB function cancelation trouble,
Stop lam ...