Reduced Engine Power Mode

WARNING: This page is about a different car, the 2004 Saturn Ion Red Line. However, it is still accessible from the selected car via links, so may be relevant.

When the PCM detects a condition with the TAC system, the PCM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:

Acceleration limiting-The PCM will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.
Limited throttle mode-The PCM will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
Throttle default mode-The PCM will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
Forced idle mode-The PCM will perform the following actions:
- Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned OFF.
- Ignore the accelerator pedal input.
Engine shutdown mode-The PCM will disable fuel and de-energize the throttle actuator.