General Information

Component Location





General Description

The Electronic Throttle Control (ETC) system consist of the Accelerator Position Sensors (APS) and the Throttle Body which houses the Throttle Position Sensors (TPS). TPS 1 & 2 share the same source voltage and ground. The throttle valve is moved by a throttle motor which is housed in the Throttle Body and controlled by the ECM. As the throttle is opened, TPS1 output signal increase smoothly while TPS2 output signal will decrease. The APS sends signals to the ECM with the driver's request. The ECM then commands the throttle motor to move the throttle valve. The TPS provides feedback to the ECM on the throttle valve movement.

DTC Description

If the sensor input voltage is lower than the minimum threshold value during 0.14 sec under normal driving condition, ECM sets DTC P0222.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data




Fig. 1) Normal waveform of TPS1 & TPS2 with accel pedal depressed under IG ON condition