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. TPS 1&2 are sharing the same source voltage and ground.The throttle valve opening is control by throttle motor which is controlled by Engine Control Module (ECM).The opposite position indicator shows inverted signal characteristics.TPS1 output voltage increases smoothly in proportion with the throttle valve opening angle after starting. TPS2 output voltage decreases in inverse proportion with the throttle valve opening angle after starting. TPS provides feedback to the ECM to control the throttle motor in order to control the throttle valve opening angle properly in response to the driving condition.

DTC Description

Checking output signals from TPS 1 and 2 under detecting condition, if output signals difference between TPS1 and TPS2 are detected more than 4.5% for the specified number of times., ECM sets P2135. And then MIL (Malfunction Indication Lamp) turns on.

DTC Detecting Condition





Specification





Diagnostic Circuit Diagram





Signal Waveform & Data

Fig.1) Normal waveform of TPS1 & TPS2 with no accel pedal depressed under IG ON condition
Fig.2) Normal waveform of TPS1 & TPS2 with accel pedal depressed under IG ON condition
Fig.3) Normal data of TPS1 & TPS2 under idle condition
Fig.4) Abnormal data of TPS1 & TPS2 under open condition