![]() ![]() I will provide some highlights of some common scan tools that are used in America’s service bays. My objective in writing this article is to help you get the most out of your scan tool. Another example could be a Barometric Pressure (BARO) sensor that is out of calibration causing a drivability problem but is not bad enough to set a DTC. ![]() Just because the vehicle produces heat does not mean that the thermostat is functioning correctly. You can have a thermostat, for example, that does not reach the proper temperature in the specified amount of time, preventing the vehicle from completing monitors, shifting right or running correctly. Remember that Diagnostic Trouble Codes (DTCs) are not set for everything. Knowing a good scan tool PID from a bad one makes all the difference in a proper diagnosis. It’s the ability of interpreting the Parameter Identifier (PID) data displayed on the screen that will lead you to a successful diagnosis and repair of the vehicle. In order to master a scan tool, you need to understand that there is much more to it than reading codes.
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