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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 330 (Engine Controls - Self-Diagnostics - 3.0L) >> Diagnostic Tests >> DTC P2105: Throttle Actuator Control System - Forced Engine Shutdown >> Circuit Description

Circuit Description

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

If Engine Control Module (ECM) detects a condition in the Throttle Actuator Control (TAC) system, the ECM disables the TAC motor. The Accelerator Pedal Position (APP) sensor will have no affect on the throttle position and the throttle will remain in the rest position. The RPM will vary due to limited fuel and spark changes based on APP input. If the engine speed is greater than 1300 RPM, the ECM will turn the fuel off for short intervals until the engine RPM is less than 1300 RPM. If ECM detects a fault in the TAC system that is beyond its controllable limits, DTC P2105 sets.

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