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Home >> Toyota >> 2004 >> Matrix Base, FWD, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 111 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P2111: Throttle Actuator Control System Stuck Open Or DTC P2112: Throttle Actuator Control System Stuck Closed >> Circuit Description
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Circuit Description

WARNING: This page is about a different car, the 2003 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

The throttle motor is operated by the ECM and it opens and closes the throttle valve. The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttle body. It provides feedback to the ECM to control the throttle motor in order to make the throttle valve opening angle properly in response to the driving condition. If this DTC is stored, the ECM shuts down the power for the throttle motor, and the throttle valve is fully closed by the return spring. Throttle valve is locked at a certain opening angle. Electronically controlled throttle operation is cancelled until system returns to normal and ignition switch is turned OFF.

Possible causes are:

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