System Status and Drive Cycle For Satisfying Federal Inspection
System Status and Drive Cycle For Satisfying Federal Inspection/Maintenance (I/M 240) RegulationsI/M Ready Status means a signal or flag for each emission system test that had been set in the PCM. I/M Ready Status indicates that the vehicle on-board emissions diagnostics have been run. I/M Ready Status is not concerned whether the emission system passed or failed the test, only that on-board diagnosis is complete. Not all vehicles use all possible I/M flags.