Wide-Open-Throttle Mode

This is an OPEN LOOP mode. During wide-open throttle operation, the following inputs are used by PCM:

• Inlet/Intake Air Temperature
• Engine Coolant Temperature
• Engine Speed
• Knock Sensor
• Manifold Absolute Pressure
• Throttle Position

When PCM senses a wide-open-throttle condition through Throttle Position Sensor (TPS) it de-energizes A/C compressor clutch relay. This disables air conditioning system and disables EGR (if equipped). The PCM adjusts injector pulse width to supply a predetermined amount of additional fuel, based on MAP and RPM.