What do the green, yellow, and red LED indicators on the Innova 5610 mean?

The green LED indicates all engine systems are operating normally with no trouble codes present. The yellow LED indicates either a pending code is present or some monitors have not yet completed their diagnostic testing. The red LED indicates there is a problem in one or more vehicle systems and DTCs are present, corresponding to the Malfunction Indicator ('Check Engine') lamp lighting on the vehicle's dashboard.