Method and system for servicing a vehicle using a functional test

A method comprising determining a functional test and one or more parameter identifiers (PIDs) corresponding to the functional test. The method also includes transmitting first and second sets of vehicle data messages to a vehicle. The first set of vehicle data messages includes a first vehicle data message to request performance of the functional test and the second set of vehicle data messages includes vehicle data messages including the one or more PIDs. Additionally, the method includes receiving, from the vehicle, a third set of vehicle data message including parameter values corresponding to the one or more PIDs. Furthermore, the method includes outputting, by the processor on a display, a first graphical user interface including a user-selectable control corresponding to performance of the functional test, a textual description corresponding to each of the one or more PIDs and parameter values corresponding to the one or more PIDs.