General Information

Component Location





General Description

The Electronic Throttle Control (ETC) system is made of the components throttle body, Throttle Position Sensor (TPS) 1 & 2 and Accelerator Position Sensor (APS) 1 & 2.The APS is mounted in the accelerator pedal to detect the opening angle of the accelerator pedal. It has 2 sensors to detect the accelerator position and a malfunction of the accelerator position sensor. The PCM judges the current opening angle of the accelerator pedal from APS1 & 2, and the PCM controls the throttle motor based on these signals.

DTC Description

PCM sets DTC P2138 if the PCM detects output voltage of the APS1 is not proportion to APS2.

DTC Detecting Condition





Diagnostic Circuit Diagram