ized title for that location that is always used for monitor status called Mode $06. This section of the standardized Global OBD II data is reserved for non-continuous monitors. At the beginning or end of this section you'll find OBD monitor status if you don't find it in the enhanced OBD II section. When a monitor status says "YES" or "RAN" or "Successful" on your scan tool it may have passed or failed but it did go through the test sequence. The pass or fail status would be listed in the scan tool under "Pending DTCs. angle greater than X % and ECT over 120 deg. F". Those are called continuous monitors or sometimes referred to as comprehensive component monitors. They run whenever the test criteria are met regardless of how often (or how infrequent) the driver operates the vehicle in that particular manner. Other monitors are referred to as non-continuous monitors. They are typically run once in a set of criteria referred to as an OBD II trip. Some DTCs require 2 trips with a failure to set a MIL while others require only 1. (Fig. 5) The definition of a trip to the driver of the vehicle may mean a drive to work in the morning or a run over to the school to drop off the kids. The definition of an OBD II trip is quite different and varies from one non-continuous monitor to the next. For example, the criteria for an OBD II trip for running the thermostat monitor for a typi Continuous and Non-Continuous Illustration courtesy Delphi Some of the OBD II monitors are run whenever the engine and or vehicle meet certain criteria. The criteria may be as simple as "ignition is on" or more complicated like "VSS over X MPH with throttle Figure 5: Thermostat monitor runs once per trip and requires two failures to turn on the MIL. The first failure will, however record a freeze frame in pending DTCs allowing you to determine what conditions the problem occurred in order to help you recreate those conditions with a road test if the problem is intermittent. When all monitors shown in this chart are run, the term OBD II Drive Cycle applies. July 2016 3 MACS Service Reports