Enable/Disable Conditions

All of the following conditions must be met before the PCM will allow EGR operation to begin:
^ Engine running.
^ PCM in ignition control mode.
^ Transaxle in drive range.
^ Intake air temperature between -10°C and 128°C.
^ If engine coolant temperature (ECT) was between 18°C and 36°C at engine start-up, ECT must be between 18°C and 115°C.
If Engine Coolant Temperature (ECT) was less than 18°C or greater than 36°C at engine start-up, ECT must be between 80°C and 115°C.
^ Manifold air pressure must be greater than a low limit, between 25 and 34 kPa depending on barometric pressure, and less than 90 kPa.
^ Engine speed between 800 and 3200 RPM.
^ Throttle position must be less than a high limit, between 19 degrees and 35 degrees depending on barometric pressure.
^ Any one of the following conditions met:
- Vehicle speed less than 36 mph and throttle position switch open.
- Vehicle speed less than 36 mph, throttle switch closed.
- Vehicle speed 2 MPH or less and throttle position at least 1.4 degrees.
^ Fuel is not being disabled to any cylinder due to traction control or acceleration reduction.
^ No engine overtemperature condition is present.
^ If all of the EGR enable conditions have been met but the PCM determines that A/C clutch engagement is impending, EGR enable will be delayed until 0.15 second after the A/C clutch engages.