Reduced Engine Power Mode

When the PCM detects a problem with the throttle actuator control (TAC) system the PCM enters one of the following Reduced Engine Power Modes:

• Acceleration Limiting-The control module will continue to use the accelerator pedal for throttle control, however the vehicle acceleration is limited.
• Limited Throttle Mode-The control module will continue to use the accelerator pedal for throttle control, however the maximum throttle opening is limited.
• Throttle Default Mode-The control module will turn off the throttle actuator.
• Forced Idle Mode-The control module will perform the following actions:
  • Limit engine speed to idle by positioning throttle position or by controlling fuel and spark if throttle is turned off.
  • Ignore accelerator pedal input.
• Engine Shutdown Mode-The control module will disable fuel and de-energize the throttle actuator.