Description & Operation: Description

• 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.

Courtesy of KIA MOTORS AMERICA, INC.