Automotive scan tools are extremely useful for any garage, helping you diagnose and repair issues related to the engine, air bags, anti-lock brake system, emissions, and more.
Scan tool use 10 distinct “modes” to perform various functions, but not all tools can perform in all the modes. Generally, the more you pay, the more modes you get.
One of the most discussed and often misunderstood modes is Mode 6, which displays information for “noncontinuous” monitors.
Mode 6: Noncontinuous Monitors
Essentially, a noncontinuous monitor is a system that is not always running. Noncontinuous monitors include the evaporation system, O2 sensors, and A/C systems. For example, some noncontinuous monitors run one check when the vehicle is started, then go dormant. These systems differ from “continuous” monitors, which are always running. Continuous monitors include the misfire and fuel system monitors, and are covered in Mode 7.
Mode 6 is especially useful when attempting to read information for no-code diagnostics or trying to detect pending problems. The Mode 6 system can also come in handy for a mechanic who is working to verify repairs.
Mode 6 can be very complex, however, so it is usually found only in advanced scan tools, and if you want a tool that uses Mode 6, you may be required to pay a little extra. Also, because of the complexities and specifics of Mode 6, it may require extra training or experience to fully understand. Many weekend mechanics will be able to use Mode 6, but some may find the complexities to be overwhelming.
Read Your Noncontinuous Monitors with Mode 6
Mode 6 is an essential system for any professional mechanic’s shop. By reading information from noncontinuous monitors, an experienced technician can accurately and effectively diagnose and repair many issues.
While it may take a higher level of knowledge to fully implement Mode 6, a professional mechanic or experienced tinkerer with the right scan tool can make excellent use of Mode 6.