On-Board System Readiness (OSR) Test Mode

All OBD-II scan tools 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 tool will display which monitor has not completed.

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

• Select vehicle and engine selection menu (optional). See Figure.
• Select year, engine, model and any additional information requested by scan tool.
• Follow operating instructions from scan tool 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.