Hyundai Azera: 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 and 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 OTS connector.
3.
Remove the OTS. (Refer to "Removal")
4.
After immersing the thermistor of the sensor into engine coolant ...
Specification
AcceleratorPositionOutput Voltage (V)APS1APS2C.T0.7 ~ 0.80.29 ~ 0.46W.O.T3.85 ~ 4.351.93 ~ 2.18
...
See also:
IMS Power Seat Control Repair procedures
Inspection
1.
It will be able to diagnose defects of IMS with GDS quickly.
GDS can operates actuator forcefully, input/output value monitoring and
self diagnosis.
2.
Select model and "IPM ...
Engine Control Module (ECM) Schematic Diagrams
ECM Terminal And Input/Output signal
ECM Terminal Function
Connector [ELG-A]
Pin No.DescriptionConnected to1-?2-?3-?4Immobilizer Lamp control outputImmobilizer Lamp [Without Button Engine Sta ...
Schematic Diagrams
Circuit Diagram (1)
Circuit Diagram (2)
...