To state the obvious, a car’s engine is very complex. There are multiple systems that monitor a wide range of functions, and extracting data from these systems may seem like a daunting task.
Thanks to Mode 7, however, mechanics and do-it-yourselfers can request the latest test results for continuously monitored systems, giving a clear picture of what a vehicle is doing.
Mode 7: Test Information for Continuous Monitors
Mode 7 is usually available in more advanced scan tools, so buyers looking for the function may need to pony up some extra cash. Also, the mode may be too complex for less experienced users, so you’ll want to make sure you are fully prepared to use Mode 7 before spending the extra money.
Continuous monitors are systems that are active any time the engine is running. Much like the name suggests, these monitors are continuously reading and scanning the engine for errors. Continuous monitors include fuel trim, misfires, and comprehensive components, with Mode 7 being used to display test results from these systems. Information from the “noncontinuous monitors” are displayed with Mode 6; these monitors often run a check once and then go inactive.
Mode 7 is used heavily in relation to emissions checks. The function can be used to request emission-related test and is often used by service technicians after a repair has been conducted. By checking the continuous monitors, a mechanic will be able to know whether the repair was fixed properly. The mode can also be used to retrieve pending diagnostic trouble codes that were generated during the current or past drive cycles.
Check Your Continuous Monitors with Mode 6
Whether you are a high-trained mechanic of simply want an effective way to diagnose ongoing issues with your vehicle, you will likely benefit from a tool equipped with Mode 7.
Checking test results from the continuous monitors can help your garage run more effectively, just be sure you are ready to tackle the mode’s specific challenges.