Inspection/Maintenance System Check: Description
WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Several states require that a vehicle pass On-Board Diagnostic (OBD) system tests and I/M emission inspection to renew license plates. This is accomplished by viewing I/M SYSTEM STATUS display on scan tool. Using a scan tool, the technician can observe the I/M System Status to verify that vehicle meets the criteria that complies with the local area requirements.