Circuit Description

The engine control module (ECM) contains data, which is essential for proper throttle actuator control (TAC) system operation. The ECM continuously checks the integrity of this data. If the ECM detects a fault in the TAC system, the ECM disables the TAC motor. The accelerator pedal position (APP) sensor will have no affect on the throttle position (TP) and the throttle will remain in the default position. If the ECM detects an internal fault or any fault that causes the throttle to be at the default position and the engine does not respond within the predetermined limits, DTC P2108 sets.