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Home >> Hyundai >> 2015 >> Azera Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P2128: Accelerator Position Sensor 2 Signal Circuit-High Input >> General Information >> General Description
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General Information: General Description

The Electronic Throttle Control (ETC) system consists of the throttle body, Throttle Position Sensor (TPS) 1 & 2 and Accelerator Position Sensor (APS) 1 & 2. The PCM controls the throttle motor to open and close the throttle valve. The TPS provides feedback to the PCM to control the throttle motor in order to control the throttle valve opening angle properly in response to the driver's demands. The APS is mounted on the accelerator pedal assembly to send the driver's demand to the PCM. It has 2 sensors to detect the accelerator position. The PCM uses the signals from APS 1 & 2, and controls the throttle motor based on these signals.