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On-Board System Readiness Test

All On Board Diagnostics (OBD II) scan tools should display the On-Board System Readiness (OSR) Test. The OSR will display the supported monitors on the vehicle and the status of all monitors (complete or not complete) at that time. If any monitor is not complete, the scan tool will identify which monitor has not completed. Fuel, misfire and comprehensive components are continuous type monitors and will always display continuous.