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 throttle body contains the actuator, the throttle plate and the throttle position sensor (potentiometer), which are integrated in one housing. The actuator consists of a DC motor with a two-stage gear. The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttle body. And it provides feedback to the PCM to control the throttle motor in order to control the throttle valve opening angle properly in response to the driving condition.

DTC Description

If power management mode is recognized under detecting condition, PCM sets P1295. And MIL (Malfunction Indication Lamp) turns on.

DTC Detecting Condition





[Tip 1]
- If Main relay has a fault (ex. Open) under engine running, the DTCs, P0638/P0685/P1295/P2106, can happen at the same time.
[Tip 2]
- If P1295 and P2104 occur at the same time, first check APS and ETC items (TPS or ETC motor etc).
[Tip 3]
- If P1295 and P2106 occur at the same time, first check ETC items (TPS or ETC motor etc).
** DTC Name
- P0638 Throttle Actuator Control Range/Performance (Bank 1)
- P0685 PCM/PCM Power Relay Control Circuit /Open
- P2104 Throttle Actuator Control System - Forced Idle
- P2106 Throttle Actuator Control System - Forced Limited Power