On-Board System Readiness (OSR) Test Mode

All OBD-II scan testers must display OSR test. The OSR will display monitors on the vehicle and status of all monitors; complete or not complete. If not complete, the scan tester will display which monitor has not completed.

To enter OSR, turn ignition switch to OFF position. Ensure test equipment is properly attached. Program scan tester using the following steps:

• Select vehicle and engine selection menu (optional). See Figure.
• Select year, engine, model and any additional information requested by scan tester.
• Follow operating instructions from scan tester menu.
• Select GENERIC OBD-II FUNCTIONS. Press TEST button if monitors are not complete.
• Start engine and allow to idle.
• Select ON-BOARD SYSTEM READINESS.